diff options
Diffstat (limited to 'src')
68 files changed, 3719 insertions, 3804 deletions
diff --git a/src/core/ext/client_config/client_channel.c b/src/core/ext/client_config/client_channel.c index 58ef629be0..6b779efe57 100644 --- a/src/core/ext/client_config/client_channel.c +++ b/src/core/ext/client_config/client_channel.c @@ -387,7 +387,7 @@ typedef struct client_channel_call_data { grpc_connected_subchannel *connected_subchannel; grpc_polling_entity *pollent; - grpc_transport_stream_op *waiting_ops; + grpc_transport_stream_op **waiting_ops; size_t waiting_ops_count; size_t waiting_ops_capacity; @@ -406,7 +406,7 @@ static void add_waiting_locked(call_data *calld, grpc_transport_stream_op *op) { gpr_realloc(calld->waiting_ops, calld->waiting_ops_capacity * sizeof(*calld->waiting_ops)); } - calld->waiting_ops[calld->waiting_ops_count++] = *op; + calld->waiting_ops[calld->waiting_ops_count++] = op; GPR_TIMER_END("add_waiting_locked", 0); } @@ -415,14 +415,14 @@ static void fail_locked(grpc_exec_ctx *exec_ctx, call_data *calld, size_t i; for (i = 0; i < calld->waiting_ops_count; i++) { grpc_transport_stream_op_finish_with_failure( - exec_ctx, &calld->waiting_ops[i], GRPC_ERROR_REF(error)); + exec_ctx, calld->waiting_ops[i], GRPC_ERROR_REF(error)); } calld->waiting_ops_count = 0; GRPC_ERROR_UNREF(error); } typedef struct { - grpc_transport_stream_op *ops; + grpc_transport_stream_op **ops; size_t nops; grpc_subchannel_call *call; } retry_ops_args; @@ -431,7 +431,7 @@ static void retry_ops(grpc_exec_ctx *exec_ctx, void *args, grpc_error *error) { retry_ops_args *a = args; size_t i; for (i = 0; i < a->nops; i++) { - grpc_subchannel_call_process_op(exec_ctx, a->call, &a->ops[i]); + grpc_subchannel_call_process_op(exec_ctx, a->call, a->ops[i]); } GRPC_SUBCHANNEL_CALL_UNREF(exec_ctx, a->call, "retry_ops"); gpr_free(a->ops); @@ -439,6 +439,10 @@ static void retry_ops(grpc_exec_ctx *exec_ctx, void *args, grpc_error *error) { } static void retry_waiting_locked(grpc_exec_ctx *exec_ctx, call_data *calld) { + if (calld->waiting_ops_count == 0) { + return; + } + retry_ops_args *a = gpr_malloc(sizeof(*a)); a->ops = calld->waiting_ops; a->nops = calld->waiting_ops_count; diff --git a/src/core/ext/client_config/subchannel.c b/src/core/ext/client_config/subchannel.c index df35904b85..e622862fc9 100644 --- a/src/core/ext/client_config/subchannel.c +++ b/src/core/ext/client_config/subchannel.c @@ -219,8 +219,8 @@ static gpr_atm ref_mutate(grpc_subchannel *c, gpr_atm delta, : gpr_atm_no_barrier_fetch_add(&c->ref_pair, delta); #ifdef GRPC_STREAM_REFCOUNT_DEBUG gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG, - "SUBCHANNEL: %p % 12s 0x%08x -> 0x%08x [%s]", c, purpose, old_val, - old_val + delta, reason); + "SUBCHANNEL: %p %s 0x%08" PRIxPTR " -> 0x%08" PRIxPTR " [%s]", c, + purpose, old_val, old_val + delta, reason); #endif return old_val; } @@ -504,14 +504,13 @@ static void connected_subchannel_state_op(grpc_exec_ctx *exec_ctx, grpc_pollset_set *interested_parties, grpc_connectivity_state *state, grpc_closure *closure) { - grpc_transport_op op; + grpc_transport_op *op = grpc_make_transport_op(NULL); grpc_channel_element *elem; - memset(&op, 0, sizeof(op)); - op.connectivity_state = state; - op.on_connectivity_state_change = closure; - op.bind_pollset_set = interested_parties; + op->connectivity_state = state; + op->on_connectivity_state_change = closure; + op->bind_pollset_set = interested_parties; elem = grpc_channel_stack_element(CHANNEL_STACK_FROM_CONNECTION(con), 0); - elem->filter->start_transport_op(exec_ctx, elem, &op); + elem->filter->start_transport_op(exec_ctx, elem, op); } void grpc_connected_subchannel_notify_on_state_change( @@ -525,12 +524,11 @@ void grpc_connected_subchannel_notify_on_state_change( void grpc_connected_subchannel_ping(grpc_exec_ctx *exec_ctx, grpc_connected_subchannel *con, grpc_closure *closure) { - grpc_transport_op op; + grpc_transport_op *op = grpc_make_transport_op(NULL); grpc_channel_element *elem; - memset(&op, 0, sizeof(op)); - op.send_ping = closure; + op->send_ping = closure; elem = grpc_channel_stack_element(CHANNEL_STACK_FROM_CONNECTION(con), 0); - elem->filter->start_transport_op(exec_ctx, elem, &op); + elem->filter->start_transport_op(exec_ctx, elem, op); } static void publish_transport_locked(grpc_exec_ctx *exec_ctx, diff --git a/src/core/ext/transport/chttp2/transport/chttp2_plugin.c b/src/core/ext/transport/chttp2/transport/chttp2_plugin.c index 7d5279b9da..bd87253ed3 100644 --- a/src/core/ext/transport/chttp2/transport/chttp2_plugin.c +++ b/src/core/ext/transport/chttp2/transport/chttp2_plugin.c @@ -36,14 +36,11 @@ #include "src/core/lib/debug/trace.h" #include "src/core/lib/transport/metadata.h" -extern int grpc_http_write_state_trace; - void grpc_chttp2_plugin_init(void) { grpc_chttp2_base64_encode_and_huffman_compress = grpc_chttp2_base64_encode_and_huffman_compress_impl; grpc_register_tracer("http", &grpc_http_trace); grpc_register_tracer("flowctl", &grpc_flowctl_trace); - grpc_register_tracer("http_write_state", &grpc_http_write_state_trace); } void grpc_chttp2_plugin_shutdown(void) {} diff --git a/src/core/ext/transport/chttp2/transport/chttp2_transport.c b/src/core/ext/transport/chttp2/transport/chttp2_transport.c index 00999e3b94..88ae81a35d 100644 --- a/src/core/ext/transport/chttp2/transport/chttp2_transport.c +++ b/src/core/ext/transport/chttp2/transport/chttp2_transport.c @@ -63,40 +63,27 @@ #define MAX_CLIENT_STREAM_ID 0x7fffffffu int grpc_http_trace = 0; int grpc_flowctl_trace = 0; -int grpc_http_write_state_trace = 0; - -#define TRANSPORT_FROM_WRITING(tw) \ - ((grpc_chttp2_transport *)((char *)(tw)-offsetof(grpc_chttp2_transport, \ - writing))) - -#define TRANSPORT_FROM_PARSING(tp) \ - ((grpc_chttp2_transport *)((char *)(tp)-offsetof(grpc_chttp2_transport, \ - parsing))) - -#define TRANSPORT_FROM_GLOBAL(tg) \ - ((grpc_chttp2_transport *)((char *)(tg)-offsetof(grpc_chttp2_transport, \ - global))) - -#define STREAM_FROM_GLOBAL(sg) \ - ((grpc_chttp2_stream *)((char *)(sg)-offsetof(grpc_chttp2_stream, global))) - -#define STREAM_FROM_PARSING(sg) \ - ((grpc_chttp2_stream *)((char *)(sg)-offsetof(grpc_chttp2_stream, parsing))) static const grpc_transport_vtable vtable; /* forward declarations of various callbacks that we'll build closures around */ -static void writing_action(grpc_exec_ctx *exec_ctx, void *t, grpc_error *error); -static void reading_action(grpc_exec_ctx *exec_ctx, void *t, grpc_error *error); -static void parsing_action(grpc_exec_ctx *exec_ctx, void *t, grpc_error *error); -static void initiate_writing(grpc_exec_ctx *exec_ctx, void *t, +static void write_action_begin_locked(grpc_exec_ctx *exec_ctx, void *t, + grpc_error *error); +static void write_action(grpc_exec_ctx *exec_ctx, void *t, grpc_error *error); +static void write_action_end(grpc_exec_ctx *exec_ctx, void *t, grpc_error *error); +static void write_action_end_locked(grpc_exec_ctx *exec_ctx, void *t, + grpc_error *error); -static void start_writing(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t); -static void end_waiting_for_write(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t, grpc_error *error, - const char *reason); +static void read_action_begin(grpc_exec_ctx *exec_ctx, void *t, + grpc_error *error); +static void read_action_locked(grpc_exec_ctx *exec_ctx, void *t, + grpc_error *error); +static void complete_fetch_locked(grpc_exec_ctx *exec_ctx, void *gs, + grpc_error *error); +static void complete_fetch(grpc_exec_ctx *exec_ctx, void *gs, + grpc_error *error); /** Set a transport level setting, and push it to our peer */ static void push_setting(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, grpc_chttp2_setting_id id, uint32_t value); @@ -105,56 +92,28 @@ static void push_setting(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, static void drop_connection(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, grpc_error *error); -/** Perform a transport_op */ -static void perform_stream_op_locked(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t, - grpc_chttp2_stream *s, void *transport_op); - -/** Cancel a stream: coming from the transport API */ -static void cancel_from_api(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global, - grpc_error *error); - -static void close_from_api(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global, - grpc_error *error); - -/** Add endpoint from this transport to pollset */ -static void add_to_pollset_locked(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t, - grpc_chttp2_stream *s_ignored, void *pollset); -static void add_to_pollset_set_locked(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t, - grpc_chttp2_stream *s_ignored, - void *pollset_set); +static void close_from_api(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, + grpc_chttp2_stream *s, grpc_error *error); /** Start new streams that have been created if we can */ -static void maybe_start_some_streams( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_global *transport_global); - -static void finish_global_actions(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t); - -static void connectivity_state_set( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_global *transport_global, - grpc_connectivity_state state, grpc_error *error, const char *reason); +static void maybe_start_some_streams(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t); -static void check_read_ops(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_global *transport_global); - -static void incoming_byte_stream_update_flow_control( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global, size_t max_size_hint, - size_t have_already); +static void connectivity_state_set(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + grpc_connectivity_state state, + grpc_error *error, const char *reason); + +static void incoming_byte_stream_update_flow_control(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s, + size_t max_size_hint, + size_t have_already); static void incoming_byte_stream_destroy_locked(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t, - grpc_chttp2_stream *s, - void *byte_stream); + void *byte_stream, + grpc_error *error_ignored); static void fail_pending_writes(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global, + grpc_chttp2_transport *t, grpc_chttp2_stream *s, grpc_error *error); /******************************************************************************* @@ -165,39 +124,33 @@ static void destruct_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t) { size_t i; - gpr_mu_lock(&t->executor.mu); - - GPR_ASSERT(t->ep == NULL); + grpc_endpoint_destroy(exec_ctx, t->ep); - gpr_slice_buffer_destroy(&t->global.qbuf); + gpr_slice_buffer_destroy(&t->qbuf); - gpr_slice_buffer_destroy(&t->writing.outbuf); - grpc_chttp2_hpack_compressor_destroy(&t->writing.hpack_compressor); + gpr_slice_buffer_destroy(&t->outbuf); + grpc_chttp2_hpack_compressor_destroy(&t->hpack_compressor); - gpr_slice_buffer_destroy(&t->parsing.qbuf); gpr_slice_buffer_destroy(&t->read_buffer); - grpc_chttp2_hpack_parser_destroy(&t->parsing.hpack_parser); - grpc_chttp2_goaway_parser_destroy(&t->parsing.goaway_parser); + grpc_chttp2_hpack_parser_destroy(&t->hpack_parser); + grpc_chttp2_goaway_parser_destroy(&t->goaway_parser); for (i = 0; i < STREAM_LIST_COUNT; i++) { GPR_ASSERT(t->lists[i].head == NULL); GPR_ASSERT(t->lists[i].tail == NULL); } - GPR_ASSERT(grpc_chttp2_stream_map_size(&t->parsing_stream_map) == 0); - GPR_ASSERT(grpc_chttp2_stream_map_size(&t->new_stream_map) == 0); + GPR_ASSERT(grpc_chttp2_stream_map_size(&t->stream_map) == 0); - grpc_chttp2_stream_map_destroy(&t->parsing_stream_map); - grpc_chttp2_stream_map_destroy(&t->new_stream_map); + grpc_chttp2_stream_map_destroy(&t->stream_map); grpc_connectivity_state_destroy(exec_ctx, &t->channel_callback.state_tracker); - gpr_mu_unlock(&t->executor.mu); - gpr_mu_destroy(&t->executor.mu); + grpc_combiner_destroy(exec_ctx, t->combiner); /* callback remaining pings: they're not allowed to call into the transpot, and maybe they hold resources that need to be freed */ - while (t->global.pings.next != &t->global.pings) { - grpc_chttp2_outstanding_ping *ping = t->global.pings.next; + while (t->pings.next != &t->pings) { + grpc_chttp2_outstanding_ping *ping = t->pings.next; grpc_exec_ctx_sched(exec_ctx, ping->on_recv, GRPC_ERROR_CREATE("Transport closed"), NULL); ping->next->prev = ping->prev; @@ -205,37 +158,40 @@ static void destruct_transport(grpc_exec_ctx *exec_ctx, gpr_free(ping); } + while (t->write_cb_pool) { + grpc_chttp2_write_cb *next = t->write_cb_pool->next; + gpr_free(t->write_cb_pool); + t->write_cb_pool = next; + } + gpr_free(t->peer_string); gpr_free(t); } -/*#define REFCOUNTING_DEBUG 1*/ -#ifdef REFCOUNTING_DEBUG -#define REF_TRANSPORT(t, r) ref_transport(t, r, __FILE__, __LINE__) -#define UNREF_TRANSPORT(cl, t, r) unref_transport(cl, t, r, __FILE__, __LINE__) -static void unref_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, - const char *reason, const char *file, int line) { - gpr_log(GPR_DEBUG, "chttp2:unref:%p %d->%d %s [%s:%d]", t, t->refs.count, - t->refs.count - 1, reason, file, line); +#ifdef GRPC_CHTTP2_REFCOUNTING_DEBUG +void grpc_chttp2_unref_transport(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, const char *reason, + const char *file, int line) { + gpr_log(GPR_DEBUG, "chttp2:unref:%p %" PRIdPTR "->%" PRIdPTR " %s [%s:%d]", t, + t->refs.count, t->refs.count - 1, reason, file, line); if (!gpr_unref(&t->refs)) return; destruct_transport(exec_ctx, t); } -static void ref_transport(grpc_chttp2_transport *t, const char *reason, - const char *file, int line) { - gpr_log(GPR_DEBUG, "chttp2: ref:%p %d->%d %s [%s:%d]", t, t->refs.count, - t->refs.count + 1, reason, file, line); +void grpc_chttp2_ref_transport(grpc_chttp2_transport *t, const char *reason, + const char *file, int line) { + gpr_log(GPR_DEBUG, "chttp2: ref:%p %" PRIdPTR "->%" PRIdPTR " %s [%s:%d]", t, + t->refs.count, t->refs.count + 1, reason, file, line); gpr_ref(&t->refs); } #else -#define REF_TRANSPORT(t, r) ref_transport(t) -#define UNREF_TRANSPORT(cl, t, r) unref_transport(cl, t) -static void unref_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t) { +void grpc_chttp2_unref_transport(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t) { if (!gpr_unref(&t->refs)) return; destruct_transport(exec_ctx, t); } -static void ref_transport(grpc_chttp2_transport *t) { gpr_ref(&t->refs); } +void grpc_chttp2_ref_transport(grpc_chttp2_transport *t) { gpr_ref(&t->refs); } #endif static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, @@ -251,74 +207,67 @@ static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, t->base.vtable = &vtable; t->ep = ep; - /* one ref is for destroy, the other for when ep becomes NULL */ - gpr_ref_init(&t->refs, 2); - /* ref is dropped at transport close() */ - gpr_ref_init(&t->shutdown_ep_refs, 1); - gpr_mu_init(&t->executor.mu); + /* one ref is for destroy */ + gpr_ref_init(&t->refs, 1); + t->combiner = grpc_combiner_create(grpc_endpoint_get_workqueue(ep)); t->peer_string = grpc_endpoint_get_peer(ep); t->endpoint_reading = 1; - t->global.next_stream_id = is_client ? 1 : 2; - t->global.is_client = is_client; - t->writing.outgoing_window = DEFAULT_WINDOW; - t->parsing.incoming_window = DEFAULT_WINDOW; - t->global.stream_lookahead = DEFAULT_WINDOW; - t->global.connection_window_target = DEFAULT_CONNECTION_WINDOW_TARGET; - t->global.ping_counter = 1; - t->global.pings.next = t->global.pings.prev = &t->global.pings; - t->parsing.is_client = is_client; - t->parsing.deframe_state = - is_client ? GRPC_DTS_FH_0 : GRPC_DTS_CLIENT_PREFIX_0; - t->parsing.is_first_frame = true; - t->writing.is_client = is_client; + t->next_stream_id = is_client ? 1 : 2; + t->is_client = is_client; + t->outgoing_window = DEFAULT_WINDOW; + t->incoming_window = DEFAULT_WINDOW; + t->stream_lookahead = DEFAULT_WINDOW; + t->connection_window_target = DEFAULT_CONNECTION_WINDOW_TARGET; + t->ping_counter = 1; + t->pings.next = t->pings.prev = &t->pings; + t->deframe_state = is_client ? GRPC_DTS_FH_0 : GRPC_DTS_CLIENT_PREFIX_0; + t->is_first_frame = true; grpc_connectivity_state_init( &t->channel_callback.state_tracker, GRPC_CHANNEL_READY, is_client ? "client_transport" : "server_transport"); - gpr_slice_buffer_init(&t->global.qbuf); + gpr_slice_buffer_init(&t->qbuf); + + gpr_slice_buffer_init(&t->outbuf); + grpc_chttp2_hpack_compressor_init(&t->hpack_compressor); - gpr_slice_buffer_init(&t->writing.outbuf); - grpc_chttp2_hpack_compressor_init(&t->writing.hpack_compressor); - grpc_closure_init(&t->writing_action, writing_action, t); - grpc_closure_init(&t->reading_action, reading_action, t); - grpc_closure_init(&t->parsing_action, parsing_action, t); - grpc_closure_init(&t->initiate_writing, initiate_writing, t); + grpc_closure_init(&t->write_action_begin_locked, write_action_begin_locked, + t); + grpc_closure_init(&t->write_action, write_action, t); + grpc_closure_init(&t->write_action_end, write_action_end, t); + grpc_closure_init(&t->write_action_end_locked, write_action_end_locked, t); + grpc_closure_init(&t->read_action_begin, read_action_begin, t); + grpc_closure_init(&t->read_action_locked, read_action_locked, t); - gpr_slice_buffer_init(&t->parsing.qbuf); - grpc_chttp2_goaway_parser_init(&t->parsing.goaway_parser); - grpc_chttp2_hpack_parser_init(&t->parsing.hpack_parser); + grpc_chttp2_goaway_parser_init(&t->goaway_parser); + grpc_chttp2_hpack_parser_init(&t->hpack_parser); - grpc_closure_init(&t->writing.done_cb, grpc_chttp2_terminate_writing, - &t->writing); gpr_slice_buffer_init(&t->read_buffer); - if (is_client) { - gpr_slice_buffer_add( - &t->global.qbuf, - gpr_slice_from_copied_string(GRPC_CHTTP2_CLIENT_CONNECT_STRING)); - grpc_chttp2_initiate_write(exec_ctx, &t->global, false, "initial_write"); - } /* 8 is a random stab in the dark as to a good initial size: it's small enough that it shouldn't waste memory for infrequently used connections, yet large enough that the exponential growth should happen nicely when it's needed. TODO(ctiller): tune this */ - grpc_chttp2_stream_map_init(&t->parsing_stream_map, 8); - grpc_chttp2_stream_map_init(&t->new_stream_map, 8); + grpc_chttp2_stream_map_init(&t->stream_map, 8); /* copy in initial settings to all setting sets */ for (i = 0; i < GRPC_CHTTP2_NUM_SETTINGS; i++) { - t->parsing.settings[i] = grpc_chttp2_settings_parameters[i].default_value; for (j = 0; j < GRPC_NUM_SETTING_SETS; j++) { - t->global.settings[j][i] = - grpc_chttp2_settings_parameters[i].default_value; + t->settings[j][i] = grpc_chttp2_settings_parameters[i].default_value; } } - t->global.dirtied_local_settings = 1; + t->dirtied_local_settings = 1; /* Hack: it's common for implementations to assume 65536 bytes initial send window -- this should by rights be 0 */ - t->global.force_send_settings = 1 << GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE; - t->global.sent_local_settings = 0; + t->force_send_settings = 1 << GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE; + t->sent_local_settings = 0; + + if (is_client) { + gpr_slice_buffer_add(&t->outbuf, gpr_slice_from_copied_string( + GRPC_CHTTP2_CLIENT_CONNECT_STRING)); + grpc_chttp2_initiate_write(exec_ctx, t, false, "initial_write"); + } /* configure http2 the way we like it */ if (is_client) { @@ -349,15 +298,13 @@ static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, if (channel_args->args[i].type != GRPC_ARG_INTEGER) { gpr_log(GPR_ERROR, "%s: must be an integer", GRPC_ARG_HTTP2_INITIAL_SEQUENCE_NUMBER); - } else if ((t->global.next_stream_id & 1) != + } else if ((t->next_stream_id & 1) != (channel_args->args[i].value.integer & 1)) { gpr_log(GPR_ERROR, "%s: low bit must be %d on %s", - GRPC_ARG_HTTP2_INITIAL_SEQUENCE_NUMBER, - t->global.next_stream_id & 1, + GRPC_ARG_HTTP2_INITIAL_SEQUENCE_NUMBER, t->next_stream_id & 1, is_client ? "client" : "server"); } else { - t->global.next_stream_id = - (uint32_t)channel_args->args[i].value.integer; + t->next_stream_id = (uint32_t)channel_args->args[i].value.integer; } } else if (0 == strcmp(channel_args->args[i].key, GRPC_ARG_HTTP2_STREAM_LOOKAHEAD_BYTES)) { @@ -368,8 +315,7 @@ static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, gpr_log(GPR_ERROR, "%s: must be at least 5", GRPC_ARG_HTTP2_STREAM_LOOKAHEAD_BYTES); } else { - t->global.stream_lookahead = - (uint32_t)channel_args->args[i].value.integer; + t->stream_lookahead = (uint32_t)channel_args->args[i].value.integer; } } else if (0 == strcmp(channel_args->args[i].key, GRPC_ARG_HTTP2_HPACK_TABLE_SIZE_DECODER)) { @@ -393,7 +339,7 @@ static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, GRPC_ARG_HTTP2_HPACK_TABLE_SIZE_ENCODER); } else { grpc_chttp2_hpack_compressor_set_max_usable_size( - &t->writing.hpack_compressor, + &t->hpack_compressor, (uint32_t)channel_args->args[i].value.integer); } } else if (0 == strcmp(channel_args->args[i].key, @@ -424,609 +370,354 @@ static void init_transport(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, } } } + + grpc_chttp2_initiate_write(exec_ctx, t, false, "init"); } -static void destroy_transport_locked(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t, - grpc_chttp2_stream *s_ignored, - void *arg_ignored) { +static void destroy_transport_locked(grpc_exec_ctx *exec_ctx, void *tp, + grpc_error *error) { + grpc_chttp2_transport *t = tp; t->destroying = 1; drop_connection(exec_ctx, t, GRPC_ERROR_CREATE("Transport destroyed")); + GRPC_CHTTP2_UNREF_TRANSPORT(exec_ctx, t, "destroy"); } static void destroy_transport(grpc_exec_ctx *exec_ctx, grpc_transport *gt) { grpc_chttp2_transport *t = (grpc_chttp2_transport *)gt; - grpc_chttp2_run_with_global_lock(exec_ctx, t, NULL, destroy_transport_locked, - NULL, 0); - UNREF_TRANSPORT(exec_ctx, t, "destroy"); -} - -/** block grpc_endpoint_shutdown being called until a paired - allow_endpoint_shutdown is made */ -static void prevent_endpoint_shutdown(grpc_chttp2_transport *t) { - GPR_ASSERT(t->ep); - gpr_ref(&t->shutdown_ep_refs); -} - -static void allow_endpoint_shutdown_locked(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t) { - if (gpr_unref(&t->shutdown_ep_refs)) { - if (t->ep) { - grpc_endpoint_shutdown(exec_ctx, t->ep); - } - } -} - -static void destroy_endpoint(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t) { - grpc_endpoint_destroy(exec_ctx, t->ep); - t->ep = NULL; - /* safe because we'll still have the ref for write */ - UNREF_TRANSPORT(exec_ctx, t, "disconnect"); + grpc_combiner_execute(exec_ctx, t->combiner, + grpc_closure_create(destroy_transport_locked, t), + GRPC_ERROR_NONE, false); } static void close_transport_locked(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, grpc_error *error) { if (!t->closed) { - if (grpc_http_write_state_trace) { - gpr_log(GPR_DEBUG, "W:%p close transport", t); - } t->closed = 1; - connectivity_state_set(exec_ctx, &t->global, GRPC_CHANNEL_SHUTDOWN, + connectivity_state_set(exec_ctx, t, GRPC_CHANNEL_SHUTDOWN, GRPC_ERROR_REF(error), "close_transport"); - if (t->ep) { - allow_endpoint_shutdown_locked(exec_ctx, t); - } + grpc_endpoint_shutdown(exec_ctx, t->ep); /* flush writable stream list to avoid dangling references */ - grpc_chttp2_stream_global *stream_global; - grpc_chttp2_stream_writing *stream_writing; - while (grpc_chttp2_list_pop_writable_stream( - &t->global, &t->writing, &stream_global, &stream_writing)) { - GRPC_CHTTP2_STREAM_UNREF(exec_ctx, stream_global, "chttp2_writing"); + grpc_chttp2_stream *s; + while (grpc_chttp2_list_pop_writable_stream(t, &s)) { + GRPC_CHTTP2_STREAM_UNREF(exec_ctx, s, "chttp2_writing:close"); } } GRPC_ERROR_UNREF(error); } #ifdef GRPC_STREAM_REFCOUNT_DEBUG -void grpc_chttp2_stream_ref(grpc_chttp2_stream_global *stream_global, - const char *reason) { - grpc_stream_ref(STREAM_FROM_GLOBAL(stream_global)->refcount, reason); +void grpc_chttp2_stream_ref(grpc_chttp2_stream *s, const char *reason) { + grpc_stream_ref(s->refcount, reason); } -void grpc_chttp2_stream_unref(grpc_exec_ctx *exec_ctx, - grpc_chttp2_stream_global *stream_global, +void grpc_chttp2_stream_unref(grpc_exec_ctx *exec_ctx, grpc_chttp2_stream *s, const char *reason) { - grpc_stream_unref(exec_ctx, STREAM_FROM_GLOBAL(stream_global)->refcount, - reason); + grpc_stream_unref(exec_ctx, s->refcount, reason); } #else -void grpc_chttp2_stream_ref(grpc_chttp2_stream_global *stream_global) { - grpc_stream_ref(STREAM_FROM_GLOBAL(stream_global)->refcount); +void grpc_chttp2_stream_ref(grpc_chttp2_stream *s) { + grpc_stream_ref(s->refcount); } -void grpc_chttp2_stream_unref(grpc_exec_ctx *exec_ctx, - grpc_chttp2_stream_global *stream_global) { - grpc_stream_unref(exec_ctx, STREAM_FROM_GLOBAL(stream_global)->refcount); +void grpc_chttp2_stream_unref(grpc_exec_ctx *exec_ctx, grpc_chttp2_stream *s) { + grpc_stream_unref(exec_ctx, s->refcount); } #endif -static void finish_init_stream_locked(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t, - grpc_chttp2_stream *s, - void *arg_ignored) { - grpc_chttp2_register_stream(t, s); -} - static int init_stream(grpc_exec_ctx *exec_ctx, grpc_transport *gt, grpc_stream *gs, grpc_stream_refcount *refcount, const void *server_data) { + GPR_TIMER_BEGIN("init_stream", 0); grpc_chttp2_transport *t = (grpc_chttp2_transport *)gt; grpc_chttp2_stream *s = (grpc_chttp2_stream *)gs; memset(s, 0, sizeof(*s)); + s->t = t; s->refcount = refcount; /* We reserve one 'active stream' that's dropped when the stream is read-closed. The others are for incoming_byte_streams that are actively reading */ - gpr_ref_init(&s->global.active_streams, 1); - GRPC_CHTTP2_STREAM_REF(&s->global, "chttp2"); + gpr_ref_init(&s->active_streams, 1); + GRPC_CHTTP2_STREAM_REF(s, "chttp2"); - grpc_chttp2_incoming_metadata_buffer_init(&s->parsing.metadata_buffer[0]); - grpc_chttp2_incoming_metadata_buffer_init(&s->parsing.metadata_buffer[1]); - grpc_chttp2_incoming_metadata_buffer_init( - &s->global.received_initial_metadata); - grpc_chttp2_incoming_metadata_buffer_init( - &s->global.received_trailing_metadata); - grpc_chttp2_data_parser_init(&s->parsing.data_parser); - gpr_slice_buffer_init(&s->writing.flow_controlled_buffer); - s->global.deadline = gpr_inf_future(GPR_CLOCK_MONOTONIC); + grpc_chttp2_incoming_metadata_buffer_init(&s->metadata_buffer[0]); + grpc_chttp2_incoming_metadata_buffer_init(&s->metadata_buffer[1]); + grpc_chttp2_data_parser_init(&s->data_parser); + gpr_slice_buffer_init(&s->flow_controlled_buffer); + s->deadline = gpr_inf_future(GPR_CLOCK_MONOTONIC); + grpc_closure_init(&s->complete_fetch, complete_fetch, s); + grpc_closure_init(&s->complete_fetch_locked, complete_fetch_locked, s); - REF_TRANSPORT(t, "stream"); + GRPC_CHTTP2_REF_TRANSPORT(t, "stream"); if (server_data) { - GPR_ASSERT(t->executor.parsing_active); - s->global.id = (uint32_t)(uintptr_t)server_data; - s->parsing.id = s->global.id; - s->global.outgoing_window = - t->global.settings[GRPC_PEER_SETTINGS] - [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE]; - s->parsing.incoming_window = s->global.max_recv_bytes = - t->global.settings[GRPC_SENT_SETTINGS] - [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE]; + s->id = (uint32_t)(uintptr_t)server_data; + s->outgoing_window = t->settings[GRPC_PEER_SETTINGS] + [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE]; + s->incoming_window = s->max_recv_bytes = + t->settings[GRPC_SENT_SETTINGS] + [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE]; *t->accepting_stream = s; - grpc_chttp2_stream_map_add(&t->parsing_stream_map, s->global.id, s); - s->global.in_stream_map = true; + grpc_chttp2_stream_map_add(&t->stream_map, s->id, s); } - grpc_chttp2_run_with_global_lock(exec_ctx, t, s, finish_init_stream_locked, - NULL, 0); + GPR_TIMER_END("init_stream", 0); return 0; } -static void destroy_stream_locked(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t, - grpc_chttp2_stream *s, void *arg) { +static void destroy_stream_locked(grpc_exec_ctx *exec_ctx, void *sp, + grpc_error *error) { grpc_byte_stream *bs; + grpc_chttp2_stream *s = sp; + grpc_chttp2_transport *t = s->t; GPR_TIMER_BEGIN("destroy_stream", 0); - GPR_ASSERT((s->global.write_closed && s->global.read_closed) || - s->global.id == 0); - GPR_ASSERT(!s->global.in_stream_map); - if (grpc_chttp2_unregister_stream(t, s) && t->global.sent_goaway) { - close_transport_locked( - exec_ctx, t, - GRPC_ERROR_CREATE("Last stream closed after sending goaway")); - } - if (!t->executor.parsing_active && s->global.id) { - GPR_ASSERT(grpc_chttp2_stream_map_find(&t->parsing_stream_map, - s->global.id) == NULL); + GPR_ASSERT((s->write_closed && s->read_closed) || s->id == 0); + if (s->id != 0) { + GPR_ASSERT(grpc_chttp2_stream_map_find(&t->stream_map, s->id) == NULL); } - while ( - (bs = grpc_chttp2_incoming_frame_queue_pop(&s->global.incoming_frames))) { - incoming_byte_stream_destroy_locked(exec_ctx, NULL, NULL, bs); + while ((bs = grpc_chttp2_incoming_frame_queue_pop(&s->incoming_frames))) { + incoming_byte_stream_destroy_locked(exec_ctx, bs, GRPC_ERROR_NONE); } - grpc_chttp2_list_remove_unannounced_incoming_window_available(&t->global, - &s->global); - grpc_chttp2_list_remove_stalled_by_transport(&t->global, &s->global); - grpc_chttp2_list_remove_check_read_ops(&t->global, &s->global); + grpc_chttp2_list_remove_stalled_by_transport(t, s); for (int i = 0; i < STREAM_LIST_COUNT; i++) { if (s->included[i]) { gpr_log(GPR_ERROR, "%s stream %d still included in list %d", - t->global.is_client ? "client" : "server", s->global.id, i); + t->is_client ? "client" : "server", s->id, i); abort(); } } - GPR_ASSERT(s->global.send_initial_metadata_finished == NULL); - GPR_ASSERT(s->global.send_message_finished == NULL); - GPR_ASSERT(s->global.send_trailing_metadata_finished == NULL); - GPR_ASSERT(s->global.recv_initial_metadata_ready == NULL); - GPR_ASSERT(s->global.recv_message_ready == NULL); - GPR_ASSERT(s->global.recv_trailing_metadata_finished == NULL); - grpc_chttp2_data_parser_destroy(exec_ctx, &s->parsing.data_parser); - grpc_chttp2_incoming_metadata_buffer_destroy(&s->parsing.metadata_buffer[0]); - grpc_chttp2_incoming_metadata_buffer_destroy(&s->parsing.metadata_buffer[1]); - grpc_chttp2_incoming_metadata_buffer_destroy( - &s->global.received_initial_metadata); - grpc_chttp2_incoming_metadata_buffer_destroy( - &s->global.received_trailing_metadata); - gpr_slice_buffer_destroy(&s->writing.flow_controlled_buffer); - GRPC_ERROR_UNREF(s->global.read_closed_error); - GRPC_ERROR_UNREF(s->global.write_closed_error); - - UNREF_TRANSPORT(exec_ctx, t, "stream"); + GPR_ASSERT(s->send_initial_metadata_finished == NULL); + GPR_ASSERT(s->fetching_send_message == NULL); + GPR_ASSERT(s->send_trailing_metadata_finished == NULL); + GPR_ASSERT(s->recv_initial_metadata_ready == NULL); + GPR_ASSERT(s->recv_message_ready == NULL); + GPR_ASSERT(s->recv_trailing_metadata_finished == NULL); + grpc_chttp2_data_parser_destroy(exec_ctx, &s->data_parser); + grpc_chttp2_incoming_metadata_buffer_destroy(&s->metadata_buffer[0]); + grpc_chttp2_incoming_metadata_buffer_destroy(&s->metadata_buffer[1]); + gpr_slice_buffer_destroy(&s->flow_controlled_buffer); + GRPC_ERROR_UNREF(s->read_closed_error); + GRPC_ERROR_UNREF(s->write_closed_error); + + GRPC_CHTTP2_UNREF_TRANSPORT(exec_ctx, t, "stream"); GPR_TIMER_END("destroy_stream", 0); - gpr_free(arg); + gpr_free(s->destroy_stream_arg); } static void destroy_stream(grpc_exec_ctx *exec_ctx, grpc_transport *gt, grpc_stream *gs, void *and_free_memory) { + GPR_TIMER_BEGIN("destroy_stream", 0); grpc_chttp2_transport *t = (grpc_chttp2_transport *)gt; grpc_chttp2_stream *s = (grpc_chttp2_stream *)gs; - grpc_chttp2_run_with_global_lock(exec_ctx, t, s, destroy_stream_locked, - and_free_memory, 0); + s->destroy_stream_arg = and_free_memory; + grpc_closure_init(&s->destroy_stream, destroy_stream_locked, s); + grpc_combiner_execute(exec_ctx, t->combiner, &s->destroy_stream, + GRPC_ERROR_NONE, false); + GPR_TIMER_END("destroy_stream", 0); } -grpc_chttp2_stream_parsing *grpc_chttp2_parsing_lookup_stream( - grpc_chttp2_transport_parsing *transport_parsing, uint32_t id) { - grpc_chttp2_transport *t = TRANSPORT_FROM_PARSING(transport_parsing); - grpc_chttp2_stream *s = - grpc_chttp2_stream_map_find(&t->parsing_stream_map, id); - return s ? &s->parsing : NULL; +grpc_chttp2_stream *grpc_chttp2_parsing_lookup_stream(grpc_chttp2_transport *t, + uint32_t id) { + return grpc_chttp2_stream_map_find(&t->stream_map, id); } -grpc_chttp2_stream_parsing *grpc_chttp2_parsing_accept_stream( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing, - uint32_t id) { +grpc_chttp2_stream *grpc_chttp2_parsing_accept_stream(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + uint32_t id) { grpc_chttp2_stream *accepting; - grpc_chttp2_transport *t = TRANSPORT_FROM_PARSING(transport_parsing); GPR_ASSERT(t->accepting_stream == NULL); t->accepting_stream = &accepting; t->channel_callback.accept_stream(exec_ctx, t->channel_callback.accept_stream_user_data, &t->base, (void *)(uintptr_t)id); t->accepting_stream = NULL; - return &accepting->parsing; + return accepting; } /******************************************************************************* - * LOCK MANAGEMENT + * OUTPUT PROCESSING */ -static const char *write_state_name(grpc_chttp2_write_state state) { - switch (state) { - case GRPC_CHTTP2_WRITING_INACTIVE: - return "INACTIVE"; - case GRPC_CHTTP2_WRITE_REQUESTED_NO_POLLER: - return "REQUESTED[p=0]"; - case GRPC_CHTTP2_WRITE_REQUESTED_WITH_POLLER: - return "REQUESTED[p=1]"; - case GRPC_CHTTP2_WRITE_SCHEDULED: - return "SCHEDULED"; - case GRPC_CHTTP2_WRITING: +static const char *write_state_name(grpc_chttp2_write_state st) { + switch (st) { + case GRPC_CHTTP2_WRITE_STATE_IDLE: + return "IDLE"; + case GRPC_CHTTP2_WRITE_STATE_WRITING: return "WRITING"; - case GRPC_CHTTP2_WRITING_STALE_WITH_POLLER: - return "WRITING[p=1]"; - case GRPC_CHTTP2_WRITING_STALE_NO_POLLER: - return "WRITING[p=0]"; + case GRPC_CHTTP2_WRITE_STATE_WRITING_WITH_MORE: + return "WRITING+MORE"; + case GRPC_CHTTP2_WRITE_STATE_WRITING_WITH_MORE_AND_COVERED_BY_POLLER: + return "WRITING+MORE+COVERED"; } GPR_UNREACHABLE_CODE(return "UNKNOWN"); } static void set_write_state(grpc_chttp2_transport *t, - grpc_chttp2_write_state state, const char *reason) { - if (grpc_http_write_state_trace) { - gpr_log(GPR_DEBUG, "W:%p %s -> %s because %s", t, - write_state_name(t->executor.write_state), write_state_name(state), - reason); - } - t->executor.write_state = state; -} - -static void finish_global_actions(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t) { - grpc_chttp2_executor_action_header *hdr; - grpc_chttp2_executor_action_header *next; - - GPR_TIMER_BEGIN("finish_global_actions", 0); - - for (;;) { - check_read_ops(exec_ctx, &t->global); - - gpr_mu_lock(&t->executor.mu); - if (t->executor.pending_actions_head != NULL) { - hdr = t->executor.pending_actions_head; - t->executor.pending_actions_head = t->executor.pending_actions_tail = - NULL; - gpr_mu_unlock(&t->executor.mu); - while (hdr != NULL) { - GPR_TIMER_BEGIN("chttp2:locked_action", 0); - hdr->action(exec_ctx, t, hdr->stream, hdr->arg); - GPR_TIMER_END("chttp2:locked_action", 0); - next = hdr->next; - gpr_free(hdr); - UNREF_TRANSPORT(exec_ctx, t, "pending_action"); - hdr = next; - } - continue; - } else { - t->executor.global_active = false; - switch (t->executor.write_state) { - case GRPC_CHTTP2_WRITE_REQUESTED_WITH_POLLER: - set_write_state(t, GRPC_CHTTP2_WRITE_SCHEDULED, "unlocking"); - REF_TRANSPORT(t, "initiate_writing"); - gpr_mu_unlock(&t->executor.mu); - grpc_exec_ctx_sched( - exec_ctx, &t->initiate_writing, GRPC_ERROR_NONE, - t->ep != NULL ? grpc_endpoint_get_workqueue(t->ep) : NULL); - break; - case GRPC_CHTTP2_WRITE_REQUESTED_NO_POLLER: - start_writing(exec_ctx, t); - gpr_mu_unlock(&t->executor.mu); - break; - case GRPC_CHTTP2_WRITING_INACTIVE: - case GRPC_CHTTP2_WRITING: - case GRPC_CHTTP2_WRITING_STALE_WITH_POLLER: - case GRPC_CHTTP2_WRITING_STALE_NO_POLLER: - case GRPC_CHTTP2_WRITE_SCHEDULED: - gpr_mu_unlock(&t->executor.mu); - break; - } - } - break; - } - - GPR_TIMER_END("finish_global_actions", 0); -} - -void grpc_chttp2_run_with_global_lock(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t, - grpc_chttp2_stream *optional_stream, - grpc_chttp2_locked_action action, - void *arg, size_t sizeof_arg) { - grpc_chttp2_executor_action_header *hdr; - - GPR_TIMER_BEGIN("grpc_chttp2_run_with_global_lock", 0); - - REF_TRANSPORT(t, "run_global"); - gpr_mu_lock(&t->executor.mu); - - for (;;) { - if (!t->executor.global_active) { - t->executor.global_active = 1; - gpr_mu_unlock(&t->executor.mu); - - GPR_TIMER_BEGIN("chttp2:locked_action", 0); - action(exec_ctx, t, optional_stream, arg); - GPR_TIMER_END("chttp2:locked_action", 0); - - finish_global_actions(exec_ctx, t); - } else { - gpr_mu_unlock(&t->executor.mu); - - hdr = gpr_malloc(sizeof(*hdr) + sizeof_arg); - hdr->stream = optional_stream; - hdr->action = action; - if (sizeof_arg == 0) { - hdr->arg = arg; - } else { - hdr->arg = hdr + 1; - memcpy(hdr->arg, arg, sizeof_arg); - } - - gpr_mu_lock(&t->executor.mu); - if (!t->executor.global_active) { - /* global lock was released while allocating memory: release & retry */ - gpr_free(hdr); - continue; - } - hdr->next = NULL; - if (t->executor.pending_actions_head != NULL) { - t->executor.pending_actions_tail = - t->executor.pending_actions_tail->next = hdr; - } else { - t->executor.pending_actions_tail = t->executor.pending_actions_head = - hdr; - } - REF_TRANSPORT(t, "pending_action"); - gpr_mu_unlock(&t->executor.mu); - } - break; - } - - UNREF_TRANSPORT(exec_ctx, t, "run_global"); - - GPR_TIMER_END("grpc_chttp2_run_with_global_lock", 0); + grpc_chttp2_write_state st, const char *reason) { + GRPC_CHTTP2_IF_TRACING(gpr_log(GPR_DEBUG, "W:%p %s state %s -> %s [%s]", t, + t->is_client ? "CLIENT" : "SERVER", + write_state_name(t->write_state), + write_state_name(st), reason)); + t->write_state = st; } -/******************************************************************************* - * OUTPUT PROCESSING - */ - void grpc_chttp2_initiate_write(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_global *transport_global, + grpc_chttp2_transport *t, bool covered_by_poller, const char *reason) { - /* Perform state checks, and transition to a scheduled state if appropriate. - Each time we finish the global lock execution, we check if we need to - write. If we do: - - (if there is a poller surrounding the write) schedule - initiate_writing, which locks and calls initiate_writing_locked to... - - call start_writing, which verifies (under the global lock) that there - are things that need to be written by calling - grpc_chttp2_unlocking_check_writes, and if so schedules writing_action - against the current exec_ctx, to be executed OUTSIDE of the global lock - - eventually writing_action results in grpc_chttp2_terminate_writing being - called, which re-takes the global lock, updates state, checks if we need - to do *another* write immediately, and if so loops back to - start_writing. - - Current problems: - - too much lock entry/exiting - - the writing thread can become stuck indefinitely (punt through the - workqueue periodically to fix) */ - - grpc_chttp2_transport *t = TRANSPORT_FROM_GLOBAL(transport_global); - switch (t->executor.write_state) { - case GRPC_CHTTP2_WRITING_INACTIVE: - set_write_state(t, covered_by_poller - ? GRPC_CHTTP2_WRITE_REQUESTED_WITH_POLLER - : GRPC_CHTTP2_WRITE_REQUESTED_NO_POLLER, - reason); + GPR_TIMER_BEGIN("grpc_chttp2_initiate_write", 0); + + switch (t->write_state) { + case GRPC_CHTTP2_WRITE_STATE_IDLE: + set_write_state(t, GRPC_CHTTP2_WRITE_STATE_WRITING, reason); + GRPC_CHTTP2_REF_TRANSPORT(t, "writing"); + grpc_combiner_execute_finally(exec_ctx, t->combiner, + &t->write_action_begin_locked, + GRPC_ERROR_NONE, covered_by_poller); break; - case GRPC_CHTTP2_WRITE_REQUESTED_WITH_POLLER: - /* nothing to do: write already requested */ + case GRPC_CHTTP2_WRITE_STATE_WRITING: + set_write_state( + t, + covered_by_poller + ? GRPC_CHTTP2_WRITE_STATE_WRITING_WITH_MORE_AND_COVERED_BY_POLLER + : GRPC_CHTTP2_WRITE_STATE_WRITING_WITH_MORE, + reason); break; - case GRPC_CHTTP2_WRITE_REQUESTED_NO_POLLER: + case GRPC_CHTTP2_WRITE_STATE_WRITING_WITH_MORE: if (covered_by_poller) { - /* upgrade to note poller is available to cover the write */ - set_write_state(t, GRPC_CHTTP2_WRITE_REQUESTED_WITH_POLLER, reason); + set_write_state( + t, GRPC_CHTTP2_WRITE_STATE_WRITING_WITH_MORE_AND_COVERED_BY_POLLER, + reason); } break; - case GRPC_CHTTP2_WRITE_SCHEDULED: - /* nothing to do: write already scheduled */ - break; - case GRPC_CHTTP2_WRITING: - set_write_state(t, - covered_by_poller ? GRPC_CHTTP2_WRITING_STALE_WITH_POLLER - : GRPC_CHTTP2_WRITING_STALE_NO_POLLER, - reason); + case GRPC_CHTTP2_WRITE_STATE_WRITING_WITH_MORE_AND_COVERED_BY_POLLER: break; - case GRPC_CHTTP2_WRITING_STALE_WITH_POLLER: - /* nothing to do: write already requested */ - break; - case GRPC_CHTTP2_WRITING_STALE_NO_POLLER: - if (covered_by_poller) { - /* upgrade to note poller is available to cover the write */ - set_write_state(t, GRPC_CHTTP2_WRITING_STALE_WITH_POLLER, reason); - } - break; - } -} - -static void start_writing(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t) { - GPR_ASSERT(t->executor.write_state == GRPC_CHTTP2_WRITE_SCHEDULED || - t->executor.write_state == GRPC_CHTTP2_WRITE_REQUESTED_NO_POLLER); - if (!t->closed && - grpc_chttp2_unlocking_check_writes(exec_ctx, &t->global, &t->writing)) { - set_write_state(t, GRPC_CHTTP2_WRITING, "start_writing"); - REF_TRANSPORT(t, "writing"); - prevent_endpoint_shutdown(t); - grpc_exec_ctx_sched(exec_ctx, &t->writing_action, GRPC_ERROR_NONE, NULL); - } else { - if (t->closed) { - set_write_state(t, GRPC_CHTTP2_WRITING_INACTIVE, - "start_writing:transport_closed"); - } else { - set_write_state(t, GRPC_CHTTP2_WRITING_INACTIVE, - "start_writing:nothing_to_write"); - } - end_waiting_for_write(exec_ctx, t, GRPC_ERROR_NONE, "Nothing to write"); - if (t->ep && !t->endpoint_reading) { - destroy_endpoint(exec_ctx, t); - } } -} - -static void initiate_writing_locked(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t, - grpc_chttp2_stream *s_unused, - void *arg_ignored) { - start_writing(exec_ctx, t); - UNREF_TRANSPORT(exec_ctx, t, "initiate_writing"); -} - -static void initiate_writing(grpc_exec_ctx *exec_ctx, void *arg, - grpc_error *error) { - grpc_chttp2_run_with_global_lock(exec_ctx, arg, NULL, initiate_writing_locked, - NULL, 0); + GPR_TIMER_END("grpc_chttp2_initiate_write", 0); } void grpc_chttp2_become_writable(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global, - bool covered_by_poller, const char *reason) { - if (!TRANSPORT_FROM_GLOBAL(transport_global)->closed && - grpc_chttp2_list_add_writable_stream(transport_global, stream_global)) { - GRPC_CHTTP2_STREAM_REF(stream_global, "chttp2_writing"); - grpc_chttp2_initiate_write(exec_ctx, transport_global, covered_by_poller, - reason); + grpc_chttp2_transport *t, + grpc_chttp2_stream *s, bool covered_by_poller, + const char *reason) { + if (!t->closed && grpc_chttp2_list_add_writable_stream(t, s)) { + GRPC_CHTTP2_STREAM_REF(s, "chttp2_writing:become"); + grpc_chttp2_initiate_write(exec_ctx, t, covered_by_poller, reason); } } -static void push_setting(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, - grpc_chttp2_setting_id id, uint32_t value) { - const grpc_chttp2_setting_parameters *sp = - &grpc_chttp2_settings_parameters[id]; - uint32_t use_value = GPR_CLAMP(value, sp->min_value, sp->max_value); - if (use_value != value) { - gpr_log(GPR_INFO, "Requested parameter %s clamped from %d to %d", sp->name, - value, use_value); - } - if (use_value != t->global.settings[GRPC_LOCAL_SETTINGS][id]) { - t->global.settings[GRPC_LOCAL_SETTINGS][id] = use_value; - t->global.dirtied_local_settings = 1; - grpc_chttp2_initiate_write(exec_ctx, &t->global, false, "push_setting"); +static void write_action_begin_locked(grpc_exec_ctx *exec_ctx, void *gt, + grpc_error *error_ignored) { + GPR_TIMER_BEGIN("write_action_begin_locked", 0); + grpc_chttp2_transport *t = gt; + GPR_ASSERT(t->write_state != GRPC_CHTTP2_WRITE_STATE_IDLE); + if (!t->closed && grpc_chttp2_begin_write(exec_ctx, t)) { + set_write_state(t, GRPC_CHTTP2_WRITE_STATE_WRITING, "begin writing"); + grpc_exec_ctx_sched(exec_ctx, &t->write_action, GRPC_ERROR_NONE, NULL); + } else { + set_write_state(t, GRPC_CHTTP2_WRITE_STATE_IDLE, "begin writing nothing"); + GRPC_CHTTP2_UNREF_TRANSPORT(exec_ctx, t, "writing"); } + GPR_TIMER_END("write_action_begin_locked", 0); } -/* error may be GRPC_ERROR_NONE if there is no error allocated yet. - In that case, use "reason" as the text for a new error. */ -static void end_waiting_for_write(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t, grpc_error *error, - const char *reason) { - grpc_chttp2_stream_global *stream_global; - while (grpc_chttp2_list_pop_closed_waiting_for_writing(&t->global, - &stream_global)) { - if (error == GRPC_ERROR_NONE && reason != NULL) { - /* create error object. */ - error = GRPC_ERROR_CREATE(reason); - } - fail_pending_writes(exec_ctx, &t->global, stream_global, - GRPC_ERROR_REF(error)); - GRPC_CHTTP2_STREAM_UNREF(exec_ctx, stream_global, "finish_writes"); - } - GRPC_ERROR_UNREF(error); +static void write_action(grpc_exec_ctx *exec_ctx, void *gt, grpc_error *error) { + grpc_chttp2_transport *t = gt; + GPR_TIMER_BEGIN("write_action", 0); + grpc_endpoint_write(exec_ctx, t->ep, &t->outbuf, &t->write_action_end); + GPR_TIMER_END("write_action", 0); } -static void terminate_writing_with_lock(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t, - grpc_chttp2_stream *s_ignored, - void *a) { - grpc_error *error = a; +static void write_action_end(grpc_exec_ctx *exec_ctx, void *gt, + grpc_error *error) { + grpc_chttp2_transport *t = gt; + GPR_TIMER_BEGIN("write_action_end", 0); + grpc_combiner_execute(exec_ctx, t->combiner, &t->write_action_end_locked, + GRPC_ERROR_REF(error), false); + GPR_TIMER_END("write_action_end", 0); +} - allow_endpoint_shutdown_locked(exec_ctx, t); +static void write_action_end_locked(grpc_exec_ctx *exec_ctx, void *tp, + grpc_error *error) { + GPR_TIMER_BEGIN("terminate_writing_with_lock", 0); + grpc_chttp2_transport *t = tp; if (error != GRPC_ERROR_NONE) { drop_connection(exec_ctx, t, GRPC_ERROR_REF(error)); } - grpc_chttp2_cleanup_writing(exec_ctx, &t->global, &t->writing); - - end_waiting_for_write(exec_ctx, t, error, NULL); + grpc_chttp2_end_write(exec_ctx, t, GRPC_ERROR_REF(error)); - switch (t->executor.write_state) { - case GRPC_CHTTP2_WRITING_INACTIVE: - case GRPC_CHTTP2_WRITE_REQUESTED_WITH_POLLER: - case GRPC_CHTTP2_WRITE_REQUESTED_NO_POLLER: - case GRPC_CHTTP2_WRITE_SCHEDULED: + switch (t->write_state) { + case GRPC_CHTTP2_WRITE_STATE_IDLE: GPR_UNREACHABLE_CODE(break); - case GRPC_CHTTP2_WRITING: - set_write_state(t, GRPC_CHTTP2_WRITING_INACTIVE, "terminate_writing"); + case GRPC_CHTTP2_WRITE_STATE_WRITING: + GPR_TIMER_MARK("state=writing", 0); + set_write_state(t, GRPC_CHTTP2_WRITE_STATE_IDLE, "finish writing"); break; - case GRPC_CHTTP2_WRITING_STALE_WITH_POLLER: - set_write_state(t, GRPC_CHTTP2_WRITE_REQUESTED_WITH_POLLER, - "terminate_writing"); + case GRPC_CHTTP2_WRITE_STATE_WRITING_WITH_MORE: + GPR_TIMER_MARK("state=writing_stale_no_poller", 0); + set_write_state(t, GRPC_CHTTP2_WRITE_STATE_WRITING, + "continue writing [!covered]"); + GRPC_CHTTP2_REF_TRANSPORT(t, "writing"); + grpc_combiner_execute_finally(exec_ctx, t->combiner, + &t->write_action_begin_locked, + GRPC_ERROR_NONE, false); break; - case GRPC_CHTTP2_WRITING_STALE_NO_POLLER: - set_write_state(t, GRPC_CHTTP2_WRITE_REQUESTED_NO_POLLER, - "terminate_writing"); + case GRPC_CHTTP2_WRITE_STATE_WRITING_WITH_MORE_AND_COVERED_BY_POLLER: + GPR_TIMER_MARK("state=writing_stale_with_poller", 0); + set_write_state(t, GRPC_CHTTP2_WRITE_STATE_WRITING, + "continue writing [covered]"); + GRPC_CHTTP2_REF_TRANSPORT(t, "writing"); + grpc_combiner_execute_finally(exec_ctx, t->combiner, + &t->write_action_begin_locked, + GRPC_ERROR_NONE, true); break; } - if (t->ep && !t->endpoint_reading) { - destroy_endpoint(exec_ctx, t); - } - - UNREF_TRANSPORT(exec_ctx, t, "writing"); + GRPC_CHTTP2_UNREF_TRANSPORT(exec_ctx, t, "writing"); + GPR_TIMER_END("terminate_writing_with_lock", 0); } -void grpc_chttp2_terminate_writing(grpc_exec_ctx *exec_ctx, - void *transport_writing, grpc_error *error) { - grpc_chttp2_transport *t = TRANSPORT_FROM_WRITING(transport_writing); - grpc_chttp2_run_with_global_lock( - exec_ctx, t, NULL, terminate_writing_with_lock, GRPC_ERROR_REF(error), 0); -} - -static void writing_action(grpc_exec_ctx *exec_ctx, void *gt, - grpc_error *error) { - grpc_chttp2_transport *t = gt; - GPR_TIMER_BEGIN("writing_action", 0); - grpc_chttp2_perform_writes(exec_ctx, &t->writing, t->ep); - GPR_TIMER_END("writing_action", 0); +static void push_setting(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, + grpc_chttp2_setting_id id, uint32_t value) { + const grpc_chttp2_setting_parameters *sp = + &grpc_chttp2_settings_parameters[id]; + uint32_t use_value = GPR_CLAMP(value, sp->min_value, sp->max_value); + if (use_value != value) { + gpr_log(GPR_INFO, "Requested parameter %s clamped from %d to %d", sp->name, + value, use_value); + } + if (use_value != t->settings[GRPC_LOCAL_SETTINGS][id]) { + t->settings[GRPC_LOCAL_SETTINGS][id] = use_value; + t->dirtied_local_settings = 1; + grpc_chttp2_initiate_write(exec_ctx, t, false, "push_setting"); + } } -void grpc_chttp2_add_incoming_goaway( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_global *transport_global, - uint32_t goaway_error, gpr_slice goaway_text) { +void grpc_chttp2_add_incoming_goaway(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + uint32_t goaway_error, + gpr_slice goaway_text) { char *msg = gpr_dump_slice(goaway_text, GPR_DUMP_HEX | GPR_DUMP_ASCII); GRPC_CHTTP2_IF_TRACING( gpr_log(GPR_DEBUG, "got goaway [%d]: %s", goaway_error, msg)); gpr_slice_unref(goaway_text); - transport_global->seen_goaway = 1; + t->seen_goaway = 1; /* lie: use transient failure from the transport to indicate goaway has been * received */ connectivity_state_set( - exec_ctx, transport_global, GRPC_CHANNEL_TRANSIENT_FAILURE, + exec_ctx, t, GRPC_CHANNEL_TRANSIENT_FAILURE, grpc_error_set_str( grpc_error_set_int(GRPC_ERROR_CREATE("GOAWAY received"), GRPC_ERROR_INT_HTTP2_ERROR, @@ -1036,61 +727,49 @@ void grpc_chttp2_add_incoming_goaway( gpr_free(msg); } -static void maybe_start_some_streams( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_global *transport_global) { - grpc_chttp2_stream_global *stream_global; +static void maybe_start_some_streams(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t) { + grpc_chttp2_stream *s; uint32_t stream_incoming_window; /* start streams where we have free grpc_chttp2_stream ids and free * concurrency */ - while (transport_global->next_stream_id <= MAX_CLIENT_STREAM_ID && - transport_global->concurrent_stream_count < - transport_global - ->settings[GRPC_PEER_SETTINGS] - [GRPC_CHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS] && - grpc_chttp2_list_pop_waiting_for_concurrency(transport_global, - &stream_global)) { + while (t->next_stream_id <= MAX_CLIENT_STREAM_ID && + grpc_chttp2_stream_map_size(&t->stream_map) < + t->settings[GRPC_PEER_SETTINGS] + [GRPC_CHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS] && + grpc_chttp2_list_pop_waiting_for_concurrency(t, &s)) { /* safe since we can't (legally) be parsing this stream yet */ - grpc_chttp2_stream_parsing *stream_parsing = - &STREAM_FROM_GLOBAL(stream_global)->parsing; GRPC_CHTTP2_IF_TRACING(gpr_log( GPR_DEBUG, "HTTP:%s: Allocating new grpc_chttp2_stream %p to id %d", - transport_global->is_client ? "CLI" : "SVR", stream_global, - transport_global->next_stream_id)); + t->is_client ? "CLI" : "SVR", s, t->next_stream_id)); - GPR_ASSERT(stream_global->id == 0); - stream_global->id = stream_parsing->id = transport_global->next_stream_id; - transport_global->next_stream_id += 2; + GPR_ASSERT(s->id == 0); + s->id = t->next_stream_id; + t->next_stream_id += 2; - if (transport_global->next_stream_id >= MAX_CLIENT_STREAM_ID) { - connectivity_state_set( - exec_ctx, transport_global, GRPC_CHANNEL_TRANSIENT_FAILURE, - GRPC_ERROR_CREATE("Stream IDs exhausted"), "no_more_stream_ids"); + if (t->next_stream_id >= MAX_CLIENT_STREAM_ID) { + connectivity_state_set(exec_ctx, t, GRPC_CHANNEL_TRANSIENT_FAILURE, + GRPC_ERROR_CREATE("Stream IDs exhausted"), + "no_more_stream_ids"); } - stream_global->outgoing_window = - transport_global->settings[GRPC_PEER_SETTINGS] - [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE]; - stream_parsing->incoming_window = stream_incoming_window = - transport_global->settings[GRPC_SENT_SETTINGS] - [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE]; - stream_global->max_recv_bytes = - GPR_MAX(stream_incoming_window, stream_global->max_recv_bytes); - grpc_chttp2_stream_map_add( - &TRANSPORT_FROM_GLOBAL(transport_global)->new_stream_map, - stream_global->id, STREAM_FROM_GLOBAL(stream_global)); - stream_global->in_stream_map = true; - transport_global->concurrent_stream_count++; - grpc_chttp2_become_writable(exec_ctx, transport_global, stream_global, true, - "new_stream"); + s->outgoing_window = t->settings[GRPC_PEER_SETTINGS] + [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE]; + s->incoming_window = stream_incoming_window = + t->settings[GRPC_SENT_SETTINGS] + [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE]; + s->max_recv_bytes = GPR_MAX(stream_incoming_window, s->max_recv_bytes); + grpc_chttp2_stream_map_add(&t->stream_map, s->id, s); + grpc_chttp2_become_writable(exec_ctx, t, s, true, "new_stream"); } /* cancel out streams that will never be started */ - while (transport_global->next_stream_id >= MAX_CLIENT_STREAM_ID && - grpc_chttp2_list_pop_waiting_for_concurrency(transport_global, - &stream_global)) { - cancel_from_api(exec_ctx, transport_global, stream_global, - grpc_error_set_int( - GRPC_ERROR_CREATE("Stream IDs exhausted"), - GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAVAILABLE)); + while (t->next_stream_id >= MAX_CLIENT_STREAM_ID && + grpc_chttp2_list_pop_waiting_for_concurrency(t, &s)) { + grpc_chttp2_cancel_stream( + exec_ctx, t, s, + grpc_error_set_int(GRPC_ERROR_CREATE("Stream IDs exhausted"), + GRPC_ERROR_INT_GRPC_STATUS, + GRPC_STATUS_UNAVAILABLE)); } } @@ -1102,104 +781,188 @@ static grpc_closure *add_closure_barrier(grpc_closure *closure) { return closure; } -void grpc_chttp2_complete_closure_step( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global, grpc_closure **pclosure, - grpc_error *error) { +static void null_then_run_closure(grpc_exec_ctx *exec_ctx, + grpc_closure **closure, grpc_error *error) { + grpc_closure *c = *closure; + *closure = NULL; + grpc_closure_run(exec_ctx, c, error); +} + +void grpc_chttp2_complete_closure_step(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s, + grpc_closure **pclosure, + grpc_error *error, const char *desc) { grpc_closure *closure = *pclosure; + *pclosure = NULL; if (closure == NULL) { GRPC_ERROR_UNREF(error); return; } closure->next_data.scratch -= CLOSURE_BARRIER_FIRST_REF_BIT; if (error != GRPC_ERROR_NONE) { - if (closure->error == GRPC_ERROR_NONE) { - closure->error = + if (closure->error_data.error == GRPC_ERROR_NONE) { + closure->error_data.error = GRPC_ERROR_CREATE("Error in HTTP transport completing operation"); - closure->error = grpc_error_set_str( - closure->error, GRPC_ERROR_STR_TARGET_ADDRESS, - TRANSPORT_FROM_GLOBAL(transport_global)->peer_string); + closure->error_data.error = + grpc_error_set_str(closure->error_data.error, + GRPC_ERROR_STR_TARGET_ADDRESS, t->peer_string); } - closure->error = grpc_error_add_child(closure->error, error); + closure->error_data.error = + grpc_error_add_child(closure->error_data.error, error); } if (closure->next_data.scratch < CLOSURE_BARRIER_FIRST_REF_BIT) { if (closure->next_data.scratch & CLOSURE_BARRIER_STATS_BIT) { - grpc_transport_move_stats(&stream_global->stats, - stream_global->collecting_stats); - stream_global->collecting_stats = NULL; + grpc_transport_move_stats(&s->stats, s->collecting_stats); + s->collecting_stats = NULL; } - grpc_exec_ctx_sched(exec_ctx, closure, closure->error, NULL); + grpc_closure_run(exec_ctx, closure, closure->error_data.error); } - *pclosure = NULL; } -static int contains_non_ok_status( - grpc_chttp2_transport_global *transport_global, - grpc_metadata_batch *batch) { +static bool contains_non_ok_status(grpc_metadata_batch *batch) { grpc_linked_mdelem *l; for (l = batch->list.head; l; l = l->next) { if (l->md->key == GRPC_MDSTR_GRPC_STATUS && l->md != GRPC_MDELEM_GRPC_STATUS_0) { - return 1; + return true; } } - return 0; + return false; } -static void do_nothing(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {} +static void add_fetched_slice_locked(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s); + +static void continue_fetching_send_locked(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s) { + if (s->fetching_send_message == NULL) { + /* Stream was cancelled before message fetch completed */ + abort(); /* TODO(ctiller): what cleanup here? */ + return; + } + if (s->fetched_send_message_length == s->fetching_send_message->length) { + ssize_t notify_offset = s->fetching_slice_end_offset; + if (notify_offset <= 0) { + grpc_chttp2_complete_closure_step( + exec_ctx, t, s, &s->fetching_send_message_finished, GRPC_ERROR_NONE, + "fetching_send_message_finished"); + } else { + grpc_chttp2_write_cb *cb = t->write_cb_pool; + if (cb == NULL) { + cb = gpr_malloc(sizeof(*cb)); + } else { + t->write_cb_pool = cb->next; + } + cb->call_at_byte = (size_t)notify_offset; + cb->closure = s->fetching_send_message_finished; + s->fetching_send_message_finished = NULL; + cb->next = s->on_write_finished_cbs; + s->on_write_finished_cbs = cb; + } + s->fetching_send_message = NULL; + } else if (grpc_byte_stream_next(exec_ctx, s->fetching_send_message, + &s->fetching_slice, UINT32_MAX, + &s->complete_fetch)) { + add_fetched_slice_locked(exec_ctx, t, s); + } +} -static void perform_stream_op_locked(grpc_exec_ctx *exec_ctx, +static void add_fetched_slice_locked(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, - grpc_chttp2_stream *s, void *stream_op) { + grpc_chttp2_stream *s) { + s->fetched_send_message_length += + (uint32_t)GPR_SLICE_LENGTH(s->fetching_slice); + gpr_slice_buffer_add(&s->flow_controlled_buffer, s->fetching_slice); + if (s->id != 0) { + grpc_chttp2_become_writable(exec_ctx, t, s, true, "op.send_message"); + } + continue_fetching_send_locked(exec_ctx, t, s); +} + +static void complete_fetch_locked(grpc_exec_ctx *exec_ctx, void *gs, + grpc_error *error) { + grpc_chttp2_stream *s = gs; + grpc_chttp2_transport *t = s->t; + if (error == GRPC_ERROR_NONE) { + add_fetched_slice_locked(exec_ctx, t, s); + } else { + /* TODO(ctiller): what to do here */ + abort(); + } +} + +static void complete_fetch(grpc_exec_ctx *exec_ctx, void *gs, + grpc_error *error) { + grpc_chttp2_stream *s = gs; + grpc_chttp2_transport *t = s->t; + grpc_combiner_execute(exec_ctx, t->combiner, &s->complete_fetch_locked, + GRPC_ERROR_REF(error), + s->complete_fetch_covered_by_poller); +} + +static void do_nothing(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) {} + +static void perform_stream_op_locked(grpc_exec_ctx *exec_ctx, void *stream_op, + grpc_error *error_ignored) { GPR_TIMER_BEGIN("perform_stream_op_locked", 0); grpc_transport_stream_op *op = stream_op; - grpc_chttp2_transport_global *transport_global = &t->global; - grpc_chttp2_stream_global *stream_global = &s->global; + grpc_chttp2_transport *t = op->transport_private.args[0]; + grpc_chttp2_stream *s = op->transport_private.args[1]; + + if (grpc_http_trace) { + char *str = grpc_transport_stream_op_string(op); + gpr_log(GPR_DEBUG, "perform_stream_op_locked: %s", str); + gpr_free(str); + } grpc_closure *on_complete = op->on_complete; if (on_complete == NULL) { on_complete = grpc_closure_create(do_nothing, NULL); } + + if (grpc_http_trace) { + gpr_log(GPR_DEBUG, " on_complete = %p", on_complete); + } + /* use final_data as a barrier until enqueue time; the inital counter is dropped at the end of this function */ on_complete->next_data.scratch = CLOSURE_BARRIER_FIRST_REF_BIT; - on_complete->error = GRPC_ERROR_NONE; + on_complete->error_data.error = GRPC_ERROR_NONE; if (op->collect_stats != NULL) { - GPR_ASSERT(stream_global->collecting_stats == NULL); - stream_global->collecting_stats = op->collect_stats; + GPR_ASSERT(s->collecting_stats == NULL); + s->collecting_stats = op->collect_stats; on_complete->next_data.scratch |= CLOSURE_BARRIER_STATS_BIT; } if (op->cancel_error != GRPC_ERROR_NONE) { - cancel_from_api(exec_ctx, transport_global, stream_global, - GRPC_ERROR_REF(op->cancel_error)); + grpc_chttp2_cancel_stream(exec_ctx, t, s, GRPC_ERROR_REF(op->cancel_error)); } if (op->close_error != GRPC_ERROR_NONE) { - close_from_api(exec_ctx, transport_global, stream_global, - GRPC_ERROR_REF(op->close_error)); + close_from_api(exec_ctx, t, s, GRPC_ERROR_REF(op->close_error)); } if (op->send_initial_metadata != NULL) { - GPR_ASSERT(stream_global->send_initial_metadata_finished == NULL); - stream_global->send_initial_metadata_finished = - add_closure_barrier(on_complete); - stream_global->send_initial_metadata = op->send_initial_metadata; + GPR_ASSERT(s->send_initial_metadata_finished == NULL); + s->send_initial_metadata_finished = add_closure_barrier(on_complete); + s->send_initial_metadata = op->send_initial_metadata; const size_t metadata_size = grpc_metadata_batch_size(op->send_initial_metadata); const size_t metadata_peer_limit = - transport_global->settings[GRPC_PEER_SETTINGS] - [GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE]; - if (transport_global->is_client) { - stream_global->deadline = - gpr_time_min(stream_global->deadline, - stream_global->send_initial_metadata->deadline); + t->settings[GRPC_PEER_SETTINGS] + [GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE]; + if (t->is_client) { + s->deadline = + gpr_time_min(s->deadline, s->send_initial_metadata->deadline); } if (metadata_size > metadata_peer_limit) { - cancel_from_api( - exec_ctx, transport_global, stream_global, + grpc_chttp2_cancel_stream( + exec_ctx, t, s, grpc_error_set_int( grpc_error_set_int( grpc_error_set_int( @@ -1209,63 +972,75 @@ static void perform_stream_op_locked(grpc_exec_ctx *exec_ctx, GRPC_ERROR_INT_LIMIT, (intptr_t)metadata_peer_limit), GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_RESOURCE_EXHAUSTED)); } else { - if (contains_non_ok_status(transport_global, op->send_initial_metadata)) { - stream_global->seen_error = true; - grpc_chttp2_list_add_check_read_ops(transport_global, stream_global); + if (contains_non_ok_status(op->send_initial_metadata)) { + s->seen_error = true; } - if (!stream_global->write_closed) { - if (transport_global->is_client) { - GPR_ASSERT(stream_global->id == 0); - grpc_chttp2_list_add_waiting_for_concurrency(transport_global, - stream_global); - maybe_start_some_streams(exec_ctx, transport_global); + if (!s->write_closed) { + if (t->is_client) { + GPR_ASSERT(s->id == 0); + grpc_chttp2_list_add_waiting_for_concurrency(t, s); + maybe_start_some_streams(exec_ctx, t); } else { - GPR_ASSERT(stream_global->id != 0); - grpc_chttp2_become_writable(exec_ctx, transport_global, stream_global, - true, "op.send_initial_metadata"); + GPR_ASSERT(s->id != 0); + grpc_chttp2_become_writable(exec_ctx, t, s, true, + "op.send_initial_metadata"); } } else { - stream_global->send_trailing_metadata = NULL; + s->send_trailing_metadata = NULL; grpc_chttp2_complete_closure_step( - exec_ctx, transport_global, stream_global, - &stream_global->send_initial_metadata_finished, + exec_ctx, t, s, &s->send_initial_metadata_finished, GRPC_ERROR_CREATE( - "Attempt to send initial metadata after stream was closed")); + "Attempt to send initial metadata after stream was closed"), + "send_initial_metadata_finished"); } } } if (op->send_message != NULL) { - GPR_ASSERT(stream_global->send_message_finished == NULL); - GPR_ASSERT(stream_global->send_message == NULL); - stream_global->send_message_finished = add_closure_barrier(on_complete); - if (stream_global->write_closed) { + s->fetching_send_message_finished = add_closure_barrier(op->on_complete); + if (s->write_closed) { grpc_chttp2_complete_closure_step( - exec_ctx, transport_global, stream_global, - &stream_global->send_message_finished, - GRPC_ERROR_CREATE("Attempt to send message after stream was closed")); + exec_ctx, t, s, &s->fetching_send_message_finished, + GRPC_ERROR_CREATE("Attempt to send message after stream was closed"), + "fetching_send_message_finished"); } else { - stream_global->send_message = op->send_message; - if (stream_global->id != 0) { - grpc_chttp2_become_writable(exec_ctx, transport_global, stream_global, - true, "op.send_message"); + GPR_ASSERT(s->fetching_send_message == NULL); + uint8_t *frame_hdr = + gpr_slice_buffer_tiny_add(&s->flow_controlled_buffer, 5); + uint32_t flags = op->send_message->flags; + frame_hdr[0] = (flags & GRPC_WRITE_INTERNAL_COMPRESS) != 0; + size_t len = op->send_message->length; + frame_hdr[1] = (uint8_t)(len >> 24); + frame_hdr[2] = (uint8_t)(len >> 16); + frame_hdr[3] = (uint8_t)(len >> 8); + frame_hdr[4] = (uint8_t)(len); + s->fetching_send_message = op->send_message; + s->fetched_send_message_length = 0; + s->fetching_slice_end_offset = + (ssize_t)s->flow_controlled_buffer.length + (ssize_t)len; + s->complete_fetch_covered_by_poller = op->covered_by_poller; + if (flags & GRPC_WRITE_BUFFER_HINT) { + s->fetching_slice_end_offset -= 65536; + } + continue_fetching_send_locked(exec_ctx, t, s); + if (s->id != 0) { + grpc_chttp2_become_writable(exec_ctx, t, s, true, "op.send_message"); } } } if (op->send_trailing_metadata != NULL) { - GPR_ASSERT(stream_global->send_trailing_metadata_finished == NULL); - stream_global->send_trailing_metadata_finished = - add_closure_barrier(on_complete); - stream_global->send_trailing_metadata = op->send_trailing_metadata; + GPR_ASSERT(s->send_trailing_metadata_finished == NULL); + s->send_trailing_metadata_finished = add_closure_barrier(on_complete); + s->send_trailing_metadata = op->send_trailing_metadata; const size_t metadata_size = grpc_metadata_batch_size(op->send_trailing_metadata); const size_t metadata_peer_limit = - transport_global->settings[GRPC_PEER_SETTINGS] - [GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE]; + t->settings[GRPC_PEER_SETTINGS] + [GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE]; if (metadata_size > metadata_peer_limit) { - cancel_from_api( - exec_ctx, transport_global, stream_global, + grpc_chttp2_cancel_stream( + exec_ctx, t, s, grpc_error_set_int( grpc_error_set_int( grpc_error_set_int( @@ -1275,135 +1050,129 @@ static void perform_stream_op_locked(grpc_exec_ctx *exec_ctx, GRPC_ERROR_INT_LIMIT, (intptr_t)metadata_peer_limit), GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_RESOURCE_EXHAUSTED)); } else { - if (contains_non_ok_status(transport_global, - op->send_trailing_metadata)) { - stream_global->seen_error = true; - grpc_chttp2_list_add_check_read_ops(transport_global, stream_global); + if (contains_non_ok_status(op->send_trailing_metadata)) { + s->seen_error = true; } - if (stream_global->write_closed) { - stream_global->send_trailing_metadata = NULL; + if (s->write_closed) { + s->send_trailing_metadata = NULL; grpc_chttp2_complete_closure_step( - exec_ctx, transport_global, stream_global, - &stream_global->send_trailing_metadata_finished, + exec_ctx, t, s, &s->send_trailing_metadata_finished, grpc_metadata_batch_is_empty(op->send_trailing_metadata) ? GRPC_ERROR_NONE : GRPC_ERROR_CREATE("Attempt to send trailing metadata after " - "stream was closed")); - } else if (stream_global->id != 0) { + "stream was closed"), + "send_trailing_metadata_finished"); + } else if (s->id != 0) { /* TODO(ctiller): check if there's flow control for any outstanding bytes before going writable */ - grpc_chttp2_become_writable(exec_ctx, transport_global, stream_global, - true, "op.send_trailing_metadata"); + grpc_chttp2_become_writable(exec_ctx, t, s, true, + "op.send_trailing_metadata"); } } } if (op->recv_initial_metadata != NULL) { - GPR_ASSERT(stream_global->recv_initial_metadata_ready == NULL); - stream_global->recv_initial_metadata_ready = - op->recv_initial_metadata_ready; - stream_global->recv_initial_metadata = op->recv_initial_metadata; - grpc_chttp2_list_add_check_read_ops(transport_global, stream_global); + GPR_ASSERT(s->recv_initial_metadata_ready == NULL); + s->recv_initial_metadata_ready = op->recv_initial_metadata_ready; + s->recv_initial_metadata = op->recv_initial_metadata; + grpc_chttp2_maybe_complete_recv_initial_metadata(exec_ctx, t, s); } if (op->recv_message != NULL) { - GPR_ASSERT(stream_global->recv_message_ready == NULL); - stream_global->recv_message_ready = op->recv_message_ready; - stream_global->recv_message = op->recv_message; - if (stream_global->id != 0 && - (stream_global->incoming_frames.head == NULL || - stream_global->incoming_frames.head->is_tail)) { - incoming_byte_stream_update_flow_control( - exec_ctx, transport_global, stream_global, - transport_global->stream_lookahead, 0); + GPR_ASSERT(s->recv_message_ready == NULL); + s->recv_message_ready = op->recv_message_ready; + s->recv_message = op->recv_message; + if (s->id != 0 && + (s->incoming_frames.head == NULL || s->incoming_frames.head->is_tail)) { + incoming_byte_stream_update_flow_control(exec_ctx, t, s, + t->stream_lookahead, 0); } - grpc_chttp2_list_add_check_read_ops(transport_global, stream_global); + grpc_chttp2_maybe_complete_recv_message(exec_ctx, t, s); } if (op->recv_trailing_metadata != NULL) { - GPR_ASSERT(stream_global->recv_trailing_metadata_finished == NULL); - stream_global->recv_trailing_metadata_finished = - add_closure_barrier(on_complete); - stream_global->recv_trailing_metadata = op->recv_trailing_metadata; - stream_global->final_metadata_requested = true; - grpc_chttp2_list_add_check_read_ops(transport_global, stream_global); + GPR_ASSERT(s->recv_trailing_metadata_finished == NULL); + s->recv_trailing_metadata_finished = add_closure_barrier(on_complete); + s->recv_trailing_metadata = op->recv_trailing_metadata; + s->final_metadata_requested = true; + grpc_chttp2_maybe_complete_recv_trailing_metadata(exec_ctx, t, s); } - grpc_chttp2_complete_closure_step(exec_ctx, transport_global, stream_global, - &on_complete, GRPC_ERROR_NONE); + grpc_chttp2_complete_closure_step(exec_ctx, t, s, &on_complete, + GRPC_ERROR_NONE, "op->on_complete"); GPR_TIMER_END("perform_stream_op_locked", 0); + GRPC_CHTTP2_STREAM_UNREF(exec_ctx, s, "perform_stream_op"); } static void perform_stream_op(grpc_exec_ctx *exec_ctx, grpc_transport *gt, grpc_stream *gs, grpc_transport_stream_op *op) { + GPR_TIMER_BEGIN("perform_stream_op", 0); grpc_chttp2_transport *t = (grpc_chttp2_transport *)gt; grpc_chttp2_stream *s = (grpc_chttp2_stream *)gs; - grpc_chttp2_run_with_global_lock(exec_ctx, t, s, perform_stream_op_locked, op, - sizeof(*op)); + + if (grpc_http_trace) { + char *str = grpc_transport_stream_op_string(op); + gpr_log(GPR_DEBUG, "perform_stream_op: %s", str); + gpr_free(str); + } + + grpc_closure_init(&op->transport_private.closure, perform_stream_op_locked, + op); + op->transport_private.args[0] = gt; + op->transport_private.args[1] = gs; + GRPC_CHTTP2_STREAM_REF(s, "perform_stream_op"); + grpc_combiner_execute(exec_ctx, t->combiner, &op->transport_private.closure, + GRPC_ERROR_NONE, op->covered_by_poller); + GPR_TIMER_END("perform_stream_op", 0); } static void send_ping_locked(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, grpc_closure *on_recv) { grpc_chttp2_outstanding_ping *p = gpr_malloc(sizeof(*p)); - p->next = &t->global.pings; + p->next = &t->pings; p->prev = p->next->prev; p->prev->next = p->next->prev = p; - p->id[0] = (uint8_t)((t->global.ping_counter >> 56) & 0xff); - p->id[1] = (uint8_t)((t->global.ping_counter >> 48) & 0xff); - p->id[2] = (uint8_t)((t->global.ping_counter >> 40) & 0xff); - p->id[3] = (uint8_t)((t->global.ping_counter >> 32) & 0xff); - p->id[4] = (uint8_t)((t->global.ping_counter >> 24) & 0xff); - p->id[5] = (uint8_t)((t->global.ping_counter >> 16) & 0xff); - p->id[6] = (uint8_t)((t->global.ping_counter >> 8) & 0xff); - p->id[7] = (uint8_t)(t->global.ping_counter & 0xff); + p->id[0] = (uint8_t)((t->ping_counter >> 56) & 0xff); + p->id[1] = (uint8_t)((t->ping_counter >> 48) & 0xff); + p->id[2] = (uint8_t)((t->ping_counter >> 40) & 0xff); + p->id[3] = (uint8_t)((t->ping_counter >> 32) & 0xff); + p->id[4] = (uint8_t)((t->ping_counter >> 24) & 0xff); + p->id[5] = (uint8_t)((t->ping_counter >> 16) & 0xff); + p->id[6] = (uint8_t)((t->ping_counter >> 8) & 0xff); + p->id[7] = (uint8_t)(t->ping_counter & 0xff); + t->ping_counter++; p->on_recv = on_recv; - gpr_slice_buffer_add(&t->global.qbuf, grpc_chttp2_ping_create(0, p->id)); - grpc_chttp2_initiate_write(exec_ctx, &t->global, true, "send_ping"); + gpr_slice_buffer_add(&t->qbuf, grpc_chttp2_ping_create(0, p->id)); + grpc_chttp2_initiate_write(exec_ctx, t, true, "send_ping"); } -static void ack_ping_locked(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, - grpc_chttp2_stream *s, void *opaque_8bytes) { +void grpc_chttp2_ack_ping(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, + const uint8_t *opaque_8bytes) { grpc_chttp2_outstanding_ping *ping; - grpc_chttp2_transport_global *transport_global = &t->global; - for (ping = transport_global->pings.next; ping != &transport_global->pings; - ping = ping->next) { + for (ping = t->pings.next; ping != &t->pings; ping = ping->next) { if (0 == memcmp(opaque_8bytes, ping->id, 8)) { grpc_exec_ctx_sched(exec_ctx, ping->on_recv, GRPC_ERROR_NONE, NULL); ping->next->prev = ping->prev; ping->prev->next = ping->next; gpr_free(ping); - break; + return; } } -} - -void grpc_chttp2_ack_ping(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_parsing *transport_parsing, - const uint8_t *opaque_8bytes) { - grpc_chttp2_run_with_global_lock( - exec_ctx, TRANSPORT_FROM_PARSING(transport_parsing), NULL, - ack_ping_locked, (void *)opaque_8bytes, 8); + char *msg = gpr_dump((const char *)opaque_8bytes, 8, GPR_DUMP_HEX); + char *from = grpc_endpoint_get_peer(t->ep); + gpr_log(GPR_DEBUG, "Unknown ping response from %s: %s", from, msg); + gpr_free(from); + gpr_free(msg); } static void perform_transport_op_locked(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t, - grpc_chttp2_stream *s_unused, - void *stream_op) { + void *stream_op, + grpc_error *error_ignored) { grpc_transport_op *op = stream_op; + grpc_chttp2_transport *t = op->transport_private.args[0]; grpc_error *close_transport = op->disconnect_with_error; - /* If there's a set_accept_stream ensure that we're not parsing - to avoid changing things out from underneath */ - if (t->executor.parsing_active && op->set_accept_stream) { - GPR_ASSERT(t->post_parsing_op == NULL); - t->post_parsing_op = gpr_malloc(sizeof(*op)); - memcpy(t->post_parsing_op, op, sizeof(*op)); - return; - } - - grpc_exec_ctx_sched(exec_ctx, op->on_consumed, GRPC_ERROR_NONE, NULL); - if (op->on_connectivity_state_change != NULL) { grpc_connectivity_state_notify_on_state_change( exec_ctx, &t->channel_callback.state_tracker, op->connectivity_state, @@ -1411,15 +1180,15 @@ static void perform_transport_op_locked(grpc_exec_ctx *exec_ctx, } if (op->send_goaway) { - t->global.sent_goaway = 1; + t->sent_goaway = 1; grpc_chttp2_goaway_append( - t->global.last_incoming_stream_id, + t->last_incoming_stream_id, (uint32_t)grpc_chttp2_grpc_status_to_http2_error(op->goaway_status), - gpr_slice_ref(*op->goaway_message), &t->global.qbuf); - close_transport = grpc_chttp2_has_streams(t) - ? GRPC_ERROR_NONE - : GRPC_ERROR_CREATE("GOAWAY sent"); - grpc_chttp2_initiate_write(exec_ctx, &t->global, false, "goaway_sent"); + gpr_slice_ref(*op->goaway_message), &t->qbuf); + close_transport = grpc_chttp2_stream_map_size(&t->stream_map) == 0 + ? GRPC_ERROR_CREATE("GOAWAY sent") + : GRPC_ERROR_NONE; + grpc_chttp2_initiate_write(exec_ctx, t, false, "goaway_sent"); } if (op->set_accept_stream) { @@ -1429,11 +1198,11 @@ static void perform_transport_op_locked(grpc_exec_ctx *exec_ctx, } if (op->bind_pollset) { - add_to_pollset_locked(exec_ctx, t, NULL, op->bind_pollset); + grpc_endpoint_add_to_pollset(exec_ctx, t->ep, op->bind_pollset); } if (op->bind_pollset_set) { - add_to_pollset_set_locked(exec_ctx, t, NULL, op->bind_pollset_set); + grpc_endpoint_add_to_pollset_set(exec_ctx, t->ep, op->bind_pollset_set); } if (op->send_ping) { @@ -1443,144 +1212,131 @@ static void perform_transport_op_locked(grpc_exec_ctx *exec_ctx, if (close_transport != GRPC_ERROR_NONE) { close_transport_locked(exec_ctx, t, close_transport); } + + grpc_closure_run(exec_ctx, op->on_consumed, GRPC_ERROR_NONE); + + GRPC_CHTTP2_UNREF_TRANSPORT(exec_ctx, t, "transport_op"); } static void perform_transport_op(grpc_exec_ctx *exec_ctx, grpc_transport *gt, grpc_transport_op *op) { grpc_chttp2_transport *t = (grpc_chttp2_transport *)gt; - grpc_chttp2_run_with_global_lock( - exec_ctx, t, NULL, perform_transport_op_locked, op, sizeof(*op)); + char *msg = grpc_transport_op_string(op); + gpr_free(msg); + op->transport_private.args[0] = gt; + grpc_closure_init(&op->transport_private.closure, perform_transport_op_locked, + op); + GRPC_CHTTP2_REF_TRANSPORT(t, "transport_op"); + grpc_combiner_execute(exec_ctx, t->combiner, &op->transport_private.closure, + GRPC_ERROR_NONE, false); } /******************************************************************************* * INPUT PROCESSING - GENERAL */ -static void check_read_ops(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_global *transport_global) { - grpc_chttp2_stream_global *stream_global; +void grpc_chttp2_maybe_complete_recv_initial_metadata(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s) { grpc_byte_stream *bs; - while ( - grpc_chttp2_list_pop_check_read_ops(transport_global, &stream_global)) { - if (stream_global->recv_initial_metadata_ready != NULL && - stream_global->published_initial_metadata) { - if (stream_global->seen_error) { - while ((bs = grpc_chttp2_incoming_frame_queue_pop( - &stream_global->incoming_frames)) != NULL) { - incoming_byte_stream_destroy_locked(exec_ctx, NULL, NULL, bs); - } - if (stream_global->exceeded_metadata_size) { - cancel_from_api( - exec_ctx, transport_global, stream_global, - grpc_error_set_int( - GRPC_ERROR_CREATE( - "received initial metadata size exceeds limit"), - GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_RESOURCE_EXHAUSTED)); - } + if (s->recv_initial_metadata_ready != NULL && + s->published_metadata[0] != GRPC_METADATA_NOT_PUBLISHED) { + if (s->seen_error) { + while ((bs = grpc_chttp2_incoming_frame_queue_pop(&s->incoming_frames)) != + NULL) { + gpr_log(GPR_DEBUG, "discard %p", bs); + incoming_byte_stream_destroy_locked(exec_ctx, bs, GRPC_ERROR_NONE); } - grpc_chttp2_incoming_metadata_buffer_publish( - &stream_global->received_initial_metadata, - stream_global->recv_initial_metadata); - grpc_exec_ctx_sched(exec_ctx, stream_global->recv_initial_metadata_ready, - GRPC_ERROR_NONE, NULL); - stream_global->recv_initial_metadata_ready = NULL; } - if (stream_global->recv_message_ready != NULL) { - while (stream_global->final_metadata_requested && - stream_global->seen_error && - (bs = grpc_chttp2_incoming_frame_queue_pop( - &stream_global->incoming_frames)) != NULL) { - incoming_byte_stream_destroy_locked(exec_ctx, NULL, NULL, bs); - } - if (stream_global->incoming_frames.head != NULL) { - *stream_global->recv_message = grpc_chttp2_incoming_frame_queue_pop( - &stream_global->incoming_frames); - GPR_ASSERT(*stream_global->recv_message != NULL); - grpc_exec_ctx_sched(exec_ctx, stream_global->recv_message_ready, - GRPC_ERROR_NONE, NULL); - stream_global->recv_message_ready = NULL; - } else if (stream_global->published_trailing_metadata) { - *stream_global->recv_message = NULL; - grpc_exec_ctx_sched(exec_ctx, stream_global->recv_message_ready, - GRPC_ERROR_NONE, NULL); - stream_global->recv_message_ready = NULL; - } + grpc_chttp2_incoming_metadata_buffer_publish(&s->metadata_buffer[0], + s->recv_initial_metadata); + null_then_run_closure(exec_ctx, &s->recv_initial_metadata_ready, + GRPC_ERROR_NONE); + } +} + +void grpc_chttp2_maybe_complete_recv_message(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s) { + grpc_byte_stream *bs; + if (s->recv_message_ready != NULL) { + while (s->final_metadata_requested && s->seen_error && + (bs = grpc_chttp2_incoming_frame_queue_pop(&s->incoming_frames)) != + NULL) { + gpr_log(GPR_DEBUG, "discard %p", bs); + incoming_byte_stream_destroy_locked(exec_ctx, bs, GRPC_ERROR_NONE); } - if (stream_global->recv_trailing_metadata_finished != NULL && - stream_global->read_closed && stream_global->write_closed) { - if (stream_global->seen_error) { - while ((bs = grpc_chttp2_incoming_frame_queue_pop( - &stream_global->incoming_frames)) != NULL) { - incoming_byte_stream_destroy_locked(exec_ctx, NULL, NULL, bs); - } - if (stream_global->exceeded_metadata_size) { - cancel_from_api( - exec_ctx, transport_global, stream_global, - grpc_error_set_int( - GRPC_ERROR_CREATE( - "received trailing metadata size exceeds limit"), - GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_RESOURCE_EXHAUSTED)); - } - } - if (stream_global->all_incoming_byte_streams_finished) { - grpc_chttp2_incoming_metadata_buffer_publish( - &stream_global->received_trailing_metadata, - stream_global->recv_trailing_metadata); - grpc_chttp2_complete_closure_step( - exec_ctx, transport_global, stream_global, - &stream_global->recv_trailing_metadata_finished, GRPC_ERROR_NONE); + if (s->incoming_frames.head != NULL) { + *s->recv_message = + grpc_chttp2_incoming_frame_queue_pop(&s->incoming_frames); + GPR_ASSERT(*s->recv_message != NULL); + null_then_run_closure(exec_ctx, &s->recv_message_ready, GRPC_ERROR_NONE); + } else if (s->published_metadata[1] != GRPC_METADATA_NOT_PUBLISHED) { + *s->recv_message = NULL; + null_then_run_closure(exec_ctx, &s->recv_message_ready, GRPC_ERROR_NONE); + } + } +} + +void grpc_chttp2_maybe_complete_recv_trailing_metadata(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s) { + grpc_byte_stream *bs; + grpc_chttp2_maybe_complete_recv_message(exec_ctx, t, s); + if (s->recv_trailing_metadata_finished != NULL && s->read_closed && + s->write_closed) { + if (s->seen_error) { + while ((bs = grpc_chttp2_incoming_frame_queue_pop(&s->incoming_frames)) != + NULL) { + gpr_log(GPR_DEBUG, "discard %p", bs); + incoming_byte_stream_destroy_locked(exec_ctx, bs, GRPC_ERROR_NONE); } } + if (s->all_incoming_byte_streams_finished && + s->recv_trailing_metadata_finished != NULL) { + grpc_chttp2_incoming_metadata_buffer_publish(&s->metadata_buffer[1], + s->recv_trailing_metadata); + grpc_chttp2_complete_closure_step( + exec_ctx, t, s, &s->recv_trailing_metadata_finished, GRPC_ERROR_NONE, + "recv_trailing_metadata_finished"); + } } } -static void decrement_active_streams_locked( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global) { - if ((stream_global->all_incoming_byte_streams_finished = - gpr_unref(&stream_global->active_streams))) { - grpc_chttp2_list_add_check_read_ops(transport_global, stream_global); +static void decrement_active_streams_locked(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s) { + if ((s->all_incoming_byte_streams_finished = gpr_unref(&s->active_streams))) { + grpc_chttp2_maybe_complete_recv_trailing_metadata(exec_ctx, t, s); } } static void remove_stream(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, uint32_t id, grpc_error *error) { - size_t new_stream_count; - grpc_chttp2_stream *s = - grpc_chttp2_stream_map_delete(&t->parsing_stream_map, id); - if (!s) { - s = grpc_chttp2_stream_map_delete(&t->new_stream_map, id); - } + grpc_chttp2_stream *s = grpc_chttp2_stream_map_delete(&t->stream_map, id); GPR_ASSERT(s); - s->global.in_stream_map = false; - if (t->parsing.incoming_stream == &s->parsing) { - t->parsing.incoming_stream = NULL; - grpc_chttp2_parsing_become_skip_parser(exec_ctx, &t->parsing); + if (t->incoming_stream == s) { + t->incoming_stream = NULL; + grpc_chttp2_parsing_become_skip_parser(exec_ctx, t); } - if (s->parsing.data_parser.parsing_frame != NULL) { + if (s->data_parser.parsing_frame != NULL) { grpc_chttp2_incoming_byte_stream_finished( - exec_ctx, s->parsing.data_parser.parsing_frame, GRPC_ERROR_REF(error), - 0); - s->parsing.data_parser.parsing_frame = NULL; + exec_ctx, s->data_parser.parsing_frame, GRPC_ERROR_REF(error)); + s->data_parser.parsing_frame = NULL; } - if (grpc_chttp2_unregister_stream(t, s) && t->global.sent_goaway) { + if (grpc_chttp2_stream_map_size(&t->stream_map) == 0 && t->sent_goaway) { close_transport_locked( exec_ctx, t, GRPC_ERROR_CREATE_REFERENCING( "Last stream closed after sending GOAWAY", &error, 1)); } - if (grpc_chttp2_list_remove_writable_stream(&t->global, &s->global)) { - GRPC_CHTTP2_STREAM_UNREF(exec_ctx, &s->global, "chttp2_writing"); + if (grpc_chttp2_list_remove_writable_stream(t, s)) { + GRPC_CHTTP2_STREAM_UNREF(exec_ctx, s, "chttp2_writing:remove_stream"); } - new_stream_count = grpc_chttp2_stream_map_size(&t->parsing_stream_map) + - grpc_chttp2_stream_map_size(&t->new_stream_map); - GPR_ASSERT(new_stream_count <= UINT32_MAX); - if (new_stream_count != t->global.concurrent_stream_count) { - t->global.concurrent_stream_count = (uint32_t)new_stream_count; - maybe_start_some_streams(exec_ctx, &t->global); - } GRPC_ERROR_UNREF(error); + + maybe_start_some_streams(exec_ctx, t); } static void status_codes_from_error(grpc_error *error, gpr_timespec deadline, @@ -1610,23 +1366,20 @@ static void status_codes_from_error(grpc_error *error, gpr_timespec deadline, } } -static void cancel_from_api(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global, - grpc_error *due_to_error) { - if (!stream_global->read_closed || !stream_global->write_closed) { +void grpc_chttp2_cancel_stream(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, grpc_chttp2_stream *s, + grpc_error *due_to_error) { + if (!s->read_closed || !s->write_closed) { grpc_status_code grpc_status; grpc_chttp2_error_code http_error; - status_codes_from_error(due_to_error, stream_global->deadline, &http_error, + status_codes_from_error(due_to_error, s->deadline, &http_error, &grpc_status); - if (stream_global->id != 0) { + if (s->id != 0) { gpr_slice_buffer_add( - &transport_global->qbuf, - grpc_chttp2_rst_stream_create(stream_global->id, (uint32_t)http_error, - &stream_global->stats.outgoing)); - grpc_chttp2_initiate_write(exec_ctx, transport_global, false, - "rst_stream"); + &t->qbuf, grpc_chttp2_rst_stream_create(s->id, (uint32_t)http_error, + &s->stats.outgoing)); + grpc_chttp2_initiate_write(exec_ctx, t, false, "rst_stream"); } const char *msg = @@ -1637,25 +1390,20 @@ static void cancel_from_api(grpc_exec_ctx *exec_ctx, msg = grpc_error_string(due_to_error); } gpr_slice msg_slice = gpr_slice_from_copied_string(msg); - grpc_chttp2_fake_status(exec_ctx, transport_global, stream_global, - grpc_status, &msg_slice); + grpc_chttp2_fake_status(exec_ctx, t, s, grpc_status, &msg_slice); if (free_msg) grpc_error_free_string(msg); } - if (due_to_error != GRPC_ERROR_NONE && !stream_global->seen_error) { - stream_global->seen_error = true; - grpc_chttp2_list_add_check_read_ops(transport_global, stream_global); + if (due_to_error != GRPC_ERROR_NONE && !s->seen_error) { + s->seen_error = true; } - grpc_chttp2_mark_stream_closed(exec_ctx, transport_global, stream_global, 1, - 1, due_to_error); + grpc_chttp2_mark_stream_closed(exec_ctx, t, s, 1, 1, due_to_error); } -void grpc_chttp2_fake_status(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global, - grpc_status_code status, gpr_slice *slice) { +void grpc_chttp2_fake_status(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, + grpc_chttp2_stream *s, grpc_status_code status, + gpr_slice *slice) { if (status != GRPC_STATUS_OK) { - stream_global->seen_error = true; - grpc_chttp2_list_add_check_read_ops(transport_global, stream_global); + s->seen_error = true; } /* stream_global->recv_trailing_metadata_finished gives us a last chance replacement: we've received trailing metadata, @@ -1663,23 +1411,23 @@ void grpc_chttp2_fake_status(grpc_exec_ctx *exec_ctx, to the upper layers - drop what we've got, and then publish what we want - which is safe because we haven't told anyone about the metadata yet */ - if (!stream_global->published_trailing_metadata || - stream_global->recv_trailing_metadata_finished != NULL) { + if (s->published_metadata[1] == GRPC_METADATA_NOT_PUBLISHED || + s->recv_trailing_metadata_finished != NULL) { char status_string[GPR_LTOA_MIN_BUFSIZE]; gpr_ltoa(status, status_string); grpc_chttp2_incoming_metadata_buffer_add( - &stream_global->received_trailing_metadata, + &s->metadata_buffer[1], grpc_mdelem_from_metadata_strings( GRPC_MDSTR_GRPC_STATUS, grpc_mdstr_from_string(status_string))); if (slice) { grpc_chttp2_incoming_metadata_buffer_add( - &stream_global->received_trailing_metadata, + &s->metadata_buffer[1], grpc_mdelem_from_metadata_strings( GRPC_MDSTR_GRPC_MESSAGE, grpc_mdstr_from_slice(gpr_slice_ref(*slice)))); } - stream_global->published_trailing_metadata = true; - grpc_chttp2_list_add_check_read_ops(transport_global, stream_global); + s->published_metadata[1] = GRPC_METADATA_SYNTHESIZED_FROM_FAKE; + grpc_chttp2_maybe_complete_recv_trailing_metadata(exec_ctx, t, s); } if (slice) { gpr_slice_unref(*slice); @@ -1698,11 +1446,11 @@ static void add_error(grpc_error *error, grpc_error **refs, size_t *nrefs) { } static grpc_error *removal_error(grpc_error *extra_error, - grpc_chttp2_stream_global *stream_global) { + grpc_chttp2_stream *s) { grpc_error *refs[3]; size_t nrefs = 0; - add_error(stream_global->read_closed_error, refs, &nrefs); - add_error(stream_global->write_closed_error, refs, &nrefs); + add_error(s->read_closed_error, refs, &nrefs); + add_error(s->write_closed_error, refs, &nrefs); add_error(extra_error, refs, &nrefs); grpc_error *error = GRPC_ERROR_NONE; if (nrefs > 0) { @@ -1714,73 +1462,71 @@ static grpc_error *removal_error(grpc_error *extra_error, } static void fail_pending_writes(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global, + grpc_chttp2_transport *t, grpc_chttp2_stream *s, grpc_error *error) { - error = removal_error(error, stream_global); - stream_global->send_message = NULL; + error = removal_error(error, s); + s->fetching_send_message = NULL; + grpc_chttp2_complete_closure_step( + exec_ctx, t, s, &s->send_initial_metadata_finished, GRPC_ERROR_REF(error), + "send_initial_metadata_finished"); grpc_chttp2_complete_closure_step( - exec_ctx, transport_global, stream_global, - &stream_global->send_initial_metadata_finished, GRPC_ERROR_REF(error)); + exec_ctx, t, s, &s->send_trailing_metadata_finished, + GRPC_ERROR_REF(error), "send_trailing_metadata_finished"); grpc_chttp2_complete_closure_step( - exec_ctx, transport_global, stream_global, - &stream_global->send_trailing_metadata_finished, GRPC_ERROR_REF(error)); - grpc_chttp2_complete_closure_step(exec_ctx, transport_global, stream_global, - &stream_global->send_message_finished, - error); + exec_ctx, t, s, &s->fetching_send_message_finished, GRPC_ERROR_REF(error), + "fetching_send_message_finished"); + while (s->on_write_finished_cbs) { + grpc_chttp2_write_cb *cb = s->on_write_finished_cbs; + s->on_write_finished_cbs = cb->next; + grpc_chttp2_complete_closure_step(exec_ctx, t, s, &cb->closure, + GRPC_ERROR_REF(error), + "on_write_finished_cb"); + cb->next = t->write_cb_pool; + t->write_cb_pool = cb; + } + GRPC_ERROR_UNREF(error); } -void grpc_chttp2_mark_stream_closed( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global, int close_reads, int close_writes, - grpc_error *error) { - if (stream_global->read_closed && stream_global->write_closed) { +void grpc_chttp2_mark_stream_closed(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s, int close_reads, + int close_writes, grpc_error *error) { + if (s->read_closed && s->write_closed) { /* already closed */ GRPC_ERROR_UNREF(error); return; } - grpc_chttp2_list_add_check_read_ops(transport_global, stream_global); - if (close_reads && !stream_global->read_closed) { - stream_global->read_closed_error = GRPC_ERROR_REF(error); - stream_global->read_closed = true; - stream_global->published_initial_metadata = true; - stream_global->published_trailing_metadata = true; - decrement_active_streams_locked(exec_ctx, transport_global, stream_global); - } - if (close_writes && !stream_global->write_closed) { - stream_global->write_closed_error = GRPC_ERROR_REF(error); - stream_global->write_closed = true; - if (TRANSPORT_FROM_GLOBAL(transport_global)->executor.write_state != - GRPC_CHTTP2_WRITING_INACTIVE) { - GRPC_CHTTP2_STREAM_REF(stream_global, "finish_writes"); - grpc_chttp2_list_add_closed_waiting_for_writing(transport_global, - stream_global); - } else { - fail_pending_writes(exec_ctx, transport_global, stream_global, - GRPC_ERROR_REF(error)); - } - } - if (stream_global->read_closed && stream_global->write_closed) { - if (stream_global->id != 0 && - TRANSPORT_FROM_GLOBAL(transport_global)->executor.parsing_active) { - grpc_chttp2_list_add_closed_waiting_for_parsing(transport_global, - stream_global); - } else { - if (stream_global->id != 0) { - remove_stream(exec_ctx, TRANSPORT_FROM_GLOBAL(transport_global), - stream_global->id, - removal_error(GRPC_ERROR_REF(error), stream_global)); + if (close_reads && !s->read_closed) { + s->read_closed_error = GRPC_ERROR_REF(error); + s->read_closed = true; + for (int i = 0; i < 2; i++) { + if (s->published_metadata[i] == GRPC_METADATA_NOT_PUBLISHED) { + s->published_metadata[i] = GPRC_METADATA_PUBLISHED_AT_CLOSE; } - GRPC_CHTTP2_STREAM_UNREF(exec_ctx, stream_global, "chttp2"); } + decrement_active_streams_locked(exec_ctx, t, s); + grpc_chttp2_maybe_complete_recv_initial_metadata(exec_ctx, t, s); + grpc_chttp2_maybe_complete_recv_message(exec_ctx, t, s); + grpc_chttp2_maybe_complete_recv_trailing_metadata(exec_ctx, t, s); + } + if (close_writes && !s->write_closed) { + s->write_closed_error = GRPC_ERROR_REF(error); + s->write_closed = true; + fail_pending_writes(exec_ctx, t, s, GRPC_ERROR_REF(error)); + grpc_chttp2_maybe_complete_recv_trailing_metadata(exec_ctx, t, s); + } + if (s->read_closed && s->write_closed) { + if (s->id != 0) { + remove_stream(exec_ctx, t, s->id, + removal_error(GRPC_ERROR_REF(error), s)); + } + GRPC_CHTTP2_STREAM_UNREF(exec_ctx, s, "chttp2"); } GRPC_ERROR_UNREF(error); } -static void close_from_api(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global, - grpc_error *error) { +static void close_from_api(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, + grpc_chttp2_stream *s, grpc_error *error) { gpr_slice hdr; gpr_slice status_hdr; gpr_slice message_pfx; @@ -1788,16 +1534,17 @@ static void close_from_api(grpc_exec_ctx *exec_ctx, uint32_t len = 0; grpc_status_code grpc_status; grpc_chttp2_error_code http_error; - status_codes_from_error(error, stream_global->deadline, &http_error, - &grpc_status); + status_codes_from_error(error, s->deadline, &http_error, &grpc_status); GPR_ASSERT(grpc_status >= 0 && (int)grpc_status < 100); - if (stream_global->id != 0 && !transport_global->is_client) { + if (s->id != 0 && !t->is_client) { /* Hand roll a header block. - This is unnecessarily ugly - at some point we should find a more elegant + This is unnecessarily ugly - at some point we should find a more + elegant solution. - It's complicated by the fact that our send machinery would be dead by the + It's complicated by the fact that our send machinery would be dead by + the time we got around to sending this, so instead we ignore HPACK compression and just write the uncompressed bytes onto the wire. */ @@ -1862,23 +1609,22 @@ static void close_from_api(grpc_exec_ctx *exec_ctx, *p++ = (uint8_t)(len); *p++ = GRPC_CHTTP2_FRAME_HEADER; *p++ = GRPC_CHTTP2_DATA_FLAG_END_STREAM | GRPC_CHTTP2_DATA_FLAG_END_HEADERS; - *p++ = (uint8_t)(stream_global->id >> 24); - *p++ = (uint8_t)(stream_global->id >> 16); - *p++ = (uint8_t)(stream_global->id >> 8); - *p++ = (uint8_t)(stream_global->id); + *p++ = (uint8_t)(s->id >> 24); + *p++ = (uint8_t)(s->id >> 16); + *p++ = (uint8_t)(s->id >> 8); + *p++ = (uint8_t)(s->id); GPR_ASSERT(p == GPR_SLICE_END_PTR(hdr)); - gpr_slice_buffer_add(&transport_global->qbuf, hdr); - gpr_slice_buffer_add(&transport_global->qbuf, status_hdr); + gpr_slice_buffer_add(&t->qbuf, hdr); + gpr_slice_buffer_add(&t->qbuf, status_hdr); if (optional_message) { - gpr_slice_buffer_add(&transport_global->qbuf, message_pfx); - gpr_slice_buffer_add(&transport_global->qbuf, + gpr_slice_buffer_add(&t->qbuf, message_pfx); + gpr_slice_buffer_add(&t->qbuf, gpr_slice_from_copied_string(optional_message)); } gpr_slice_buffer_add( - &transport_global->qbuf, - grpc_chttp2_rst_stream_create(stream_global->id, GRPC_CHTTP2_NO_ERROR, - &stream_global->stats.outgoing)); + &t->qbuf, grpc_chttp2_rst_stream_create(s->id, GRPC_CHTTP2_NO_ERROR, + &s->stats.outgoing)); } const char *msg = grpc_error_get_str(error, GRPC_ERROR_STR_GRPC_MESSAGE); @@ -1888,38 +1634,39 @@ static void close_from_api(grpc_exec_ctx *exec_ctx, msg = grpc_error_string(error); } gpr_slice msg_slice = gpr_slice_from_copied_string(msg); - grpc_chttp2_fake_status(exec_ctx, transport_global, stream_global, - grpc_status, &msg_slice); + grpc_chttp2_fake_status(exec_ctx, t, s, grpc_status, &msg_slice); if (free_msg) grpc_error_free_string(msg); - grpc_chttp2_mark_stream_closed(exec_ctx, transport_global, stream_global, 1, - 1, error); - grpc_chttp2_initiate_write(exec_ctx, transport_global, false, - "close_from_api"); + grpc_chttp2_mark_stream_closed(exec_ctx, t, s, 1, 1, error); + grpc_chttp2_initiate_write(exec_ctx, t, false, "close_from_api"); } typedef struct { grpc_exec_ctx *exec_ctx; grpc_error *error; + grpc_chttp2_transport *t; } cancel_stream_cb_args; -static void cancel_stream_cb(grpc_chttp2_transport_global *transport_global, - void *user_data, - grpc_chttp2_stream_global *stream_global) { +static void cancel_stream_cb(void *user_data, uint32_t key, void *stream) { cancel_stream_cb_args *args = user_data; - cancel_from_api(args->exec_ctx, transport_global, stream_global, - GRPC_ERROR_REF(args->error)); + grpc_chttp2_stream *s = stream; + grpc_chttp2_cancel_stream(args->exec_ctx, args->t, s, + GRPC_ERROR_REF(args->error)); } static void end_all_the_calls(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, grpc_error *error) { - cancel_stream_cb_args args = {exec_ctx, error}; - grpc_chttp2_for_all_streams(&t->global, &args, cancel_stream_cb); + cancel_stream_cb_args args = {exec_ctx, error, t}; + grpc_chttp2_stream_map_for_each(&t->stream_map, cancel_stream_cb, &args); GRPC_ERROR_UNREF(error); } static void drop_connection(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, grpc_error *error) { + if (!grpc_error_get_int(error, GRPC_ERROR_INT_GRPC_STATUS, NULL)) { + error = grpc_error_set_int(error, GRPC_ERROR_INT_GRPC_STATUS, + GRPC_STATUS_UNAVAILABLE); + } close_transport_locked(exec_ctx, t, GRPC_ERROR_REF(error)); end_all_the_calls(exec_ctx, t, error); } @@ -1934,20 +1681,23 @@ static void update_global_window(void *args, uint32_t id, void *stream) { update_global_window_args *a = args; grpc_chttp2_transport *t = a->t; grpc_chttp2_stream *s = stream; - grpc_chttp2_transport_global *transport_global = &t->global; - grpc_chttp2_stream_global *stream_global = &s->global; int was_zero; int is_zero; - int64_t initial_window_update = t->parsing.initial_window_update; + int64_t initial_window_update = t->initial_window_update; - was_zero = stream_global->outgoing_window <= 0; - GRPC_CHTTP2_FLOW_CREDIT_STREAM("settings", transport_global, stream_global, - outgoing_window, initial_window_update); - is_zero = stream_global->outgoing_window <= 0; + if (initial_window_update > 0) { + was_zero = s->outgoing_window <= 0; + GRPC_CHTTP2_FLOW_CREDIT_STREAM("settings", t, s, outgoing_window, + initial_window_update); + is_zero = s->outgoing_window <= 0; - if (was_zero && !is_zero) { - grpc_chttp2_become_writable(a->exec_ctx, transport_global, stream_global, - true, "update_global_window"); + if (was_zero && !is_zero) { + grpc_chttp2_become_writable(a->exec_ctx, t, s, true, + "update_global_window"); + } + } else { + GRPC_CHTTP2_FLOW_DEBIT_STREAM("settings", t, s, outgoing_window, + -initial_window_update); } } @@ -1955,45 +1705,17 @@ static void update_global_window(void *args, uint32_t id, void *stream) { * INPUT PROCESSING - PARSING */ -static void reading_action_locked(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t, - grpc_chttp2_stream *s_unused, void *arg); -static void parsing_action(grpc_exec_ctx *exec_ctx, void *arg, - grpc_error *error); -static void post_reading_action_locked(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t, - grpc_chttp2_stream *s_unused, void *arg); -static void post_parse_locked(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, - grpc_chttp2_stream *s_unused, void *arg); - -static void reading_action(grpc_exec_ctx *exec_ctx, void *tp, - grpc_error *error) { +static void read_action_begin(grpc_exec_ctx *exec_ctx, void *tp, + grpc_error *error) { /* Control flow: reading_action_locked -> (parse_unlocked -> post_parse_locked)? -> post_reading_action_locked */ - grpc_chttp2_run_with_global_lock(exec_ctx, tp, NULL, reading_action_locked, - GRPC_ERROR_REF(error), 0); -} - -static void reading_action_locked(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t, - grpc_chttp2_stream *s_unused, void *arg) { - grpc_chttp2_transport_global *transport_global = &t->global; - grpc_chttp2_transport_parsing *transport_parsing = &t->parsing; - grpc_error *error = arg; - - GPR_ASSERT(!t->executor.parsing_active); - if (!t->closed) { - t->executor.parsing_active = 1; - /* merge stream lists */ - grpc_chttp2_stream_map_move_into(&t->new_stream_map, - &t->parsing_stream_map); - grpc_chttp2_prepare_to_read(transport_global, transport_parsing); - grpc_exec_ctx_sched(exec_ctx, &t->parsing_action, error, NULL); - } else { - post_reading_action_locked(exec_ctx, t, s_unused, arg); - } + GPR_TIMER_BEGIN("reading_action", 0); + grpc_chttp2_transport *t = tp; + grpc_combiner_execute(exec_ctx, t->combiner, &t->read_action_locked, + GRPC_ERROR_REF(error), false); + GPR_TIMER_END("reading_action", 0); } static grpc_error *try_http_parsing(grpc_exec_ctx *exec_ctx, @@ -2023,169 +1745,110 @@ static grpc_error *try_http_parsing(grpc_exec_ctx *exec_ctx, return error; } -static void parsing_action(grpc_exec_ctx *exec_ctx, void *arg, - grpc_error *error) { - grpc_chttp2_transport *t = arg; - grpc_error *err = GRPC_ERROR_NONE; - GPR_TIMER_BEGIN("reading_action.parse", 0); - size_t i = 0; - grpc_error *errors[3] = {GRPC_ERROR_REF(error), GRPC_ERROR_NONE, - GRPC_ERROR_NONE}; - for (; i < t->read_buffer.count && errors[1] == GRPC_ERROR_NONE; i++) { - errors[1] = grpc_chttp2_perform_read(exec_ctx, &t->parsing, - t->read_buffer.slices[i]); - }; - if (errors[1] == GRPC_ERROR_NONE) { - err = GRPC_ERROR_REF(error); - } else { - errors[2] = try_http_parsing(exec_ctx, t); - err = GRPC_ERROR_CREATE_REFERENCING("Failed parsing HTTP/2", errors, - GPR_ARRAY_SIZE(errors)); - } - for (i = 0; i < GPR_ARRAY_SIZE(errors); i++) { - GRPC_ERROR_UNREF(errors[i]); - } - GPR_TIMER_END("reading_action.parse", 0); - grpc_chttp2_run_with_global_lock(exec_ctx, t, NULL, post_parse_locked, err, - 0); -} - -static void post_parse_locked(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, - grpc_chttp2_stream *s_unused, void *arg) { - grpc_chttp2_transport_global *transport_global = &t->global; - grpc_chttp2_transport_parsing *transport_parsing = &t->parsing; - /* copy parsing qbuf to global qbuf */ - if (t->parsing.qbuf.count > 0) { - gpr_slice_buffer_move_into(&t->parsing.qbuf, &t->global.qbuf); - grpc_chttp2_initiate_write(exec_ctx, transport_global, false, - "parsing_qbuf"); - } - /* merge stream lists */ - grpc_chttp2_stream_map_move_into(&t->new_stream_map, &t->parsing_stream_map); - transport_global->concurrent_stream_count = - (uint32_t)grpc_chttp2_stream_map_size(&t->parsing_stream_map); - if (transport_parsing->initial_window_update != 0) { - update_global_window_args args = {t, exec_ctx}; - grpc_chttp2_stream_map_for_each(&t->parsing_stream_map, - update_global_window, &args); - transport_parsing->initial_window_update = 0; - } - /* handle higher level things */ - grpc_chttp2_publish_reads(exec_ctx, transport_global, transport_parsing); - t->executor.parsing_active = 0; - /* handle delayed transport ops (if there is one) */ - if (t->post_parsing_op) { - grpc_transport_op *op = t->post_parsing_op; - t->post_parsing_op = NULL; - perform_transport_op_locked(exec_ctx, t, NULL, op); - gpr_free(op); - } - /* if a stream is in the stream map, and gets cancelled, we need to - * ensure we are not parsing before continuing the cancellation to keep - * things in a sane state */ - grpc_chttp2_stream_global *stream_global; - while (grpc_chttp2_list_pop_closed_waiting_for_parsing(transport_global, - &stream_global)) { - GPR_ASSERT(stream_global->in_stream_map); - GPR_ASSERT(stream_global->write_closed); - GPR_ASSERT(stream_global->read_closed); - remove_stream(exec_ctx, t, stream_global->id, - removal_error(GRPC_ERROR_NONE, stream_global)); - GRPC_CHTTP2_STREAM_UNREF(exec_ctx, stream_global, "chttp2"); - } - - post_reading_action_locked(exec_ctx, t, s_unused, arg); -} - -static void post_reading_action_locked(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t, - grpc_chttp2_stream *s_unused, - void *arg) { - grpc_error *error = arg; +static void read_action_locked(grpc_exec_ctx *exec_ctx, void *tp, + grpc_error *error) { + GPR_TIMER_BEGIN("reading_action_locked", 0); + + grpc_chttp2_transport *t = tp; + + GRPC_ERROR_REF(error); + + if (!t->closed) { + GPR_TIMER_BEGIN("reading_action.parse", 0); + size_t i = 0; + grpc_error *errors[3] = {GRPC_ERROR_REF(error), GRPC_ERROR_NONE, + GRPC_ERROR_NONE}; + for (; i < t->read_buffer.count && errors[1] == GRPC_ERROR_NONE; i++) { + errors[1] = + grpc_chttp2_perform_read(exec_ctx, t, t->read_buffer.slices[i]); + }; + if (errors[1] != GRPC_ERROR_NONE) { + errors[2] = try_http_parsing(exec_ctx, t); + GRPC_ERROR_UNREF(error); + error = GRPC_ERROR_CREATE_REFERENCING("Failed parsing HTTP/2", errors, + GPR_ARRAY_SIZE(errors)); + } + for (i = 0; i < GPR_ARRAY_SIZE(errors); i++) { + GRPC_ERROR_UNREF(errors[i]); + } + GPR_TIMER_END("reading_action.parse", 0); + + GPR_TIMER_BEGIN("post_parse_locked", 0); + if (t->initial_window_update != 0) { + update_global_window_args args = {t, exec_ctx}; + grpc_chttp2_stream_map_for_each(&t->stream_map, update_global_window, + &args); + t->initial_window_update = 0; + } + /* handle higher level things */ + if (t->incoming_window < t->connection_window_target * 3 / 4) { + int64_t announce_bytes = t->connection_window_target - t->incoming_window; + GRPC_CHTTP2_FLOW_CREDIT_TRANSPORT("parsed", t, announce_incoming_window, + announce_bytes); + GRPC_CHTTP2_FLOW_CREDIT_TRANSPORT("parsed", t, incoming_window, + announce_bytes); + grpc_chttp2_initiate_write(exec_ctx, t, false, "global incoming window"); + } + + GPR_TIMER_END("post_parse_locked", 0); + } + + GPR_TIMER_BEGIN("post_reading_action_locked", 0); bool keep_reading = false; if (error == GRPC_ERROR_NONE && t->closed) { error = GRPC_ERROR_CREATE("Transport closed"); } if (error != GRPC_ERROR_NONE) { - if (!grpc_error_get_int(error, GRPC_ERROR_INT_GRPC_STATUS, NULL)) { - error = grpc_error_set_int(error, GRPC_ERROR_INT_GRPC_STATUS, - GRPC_STATUS_UNAVAILABLE); - } drop_connection(exec_ctx, t, GRPC_ERROR_REF(error)); t->endpoint_reading = 0; - if (grpc_http_write_state_trace) { - gpr_log(GPR_DEBUG, "R:%p -> 0 ws=%s", t, - write_state_name(t->executor.write_state)); - } - if (t->executor.write_state == GRPC_CHTTP2_WRITING_INACTIVE && t->ep) { - destroy_endpoint(exec_ctx, t); - } } else if (!t->closed) { keep_reading = true; - REF_TRANSPORT(t, "keep_reading"); - prevent_endpoint_shutdown(t); + GRPC_CHTTP2_REF_TRANSPORT(t, "keep_reading"); } gpr_slice_buffer_reset_and_unref(&t->read_buffer); - GRPC_ERROR_UNREF(error); if (keep_reading) { - grpc_endpoint_read(exec_ctx, t->ep, &t->read_buffer, &t->reading_action); - allow_endpoint_shutdown_locked(exec_ctx, t); - UNREF_TRANSPORT(exec_ctx, t, "keep_reading"); + grpc_endpoint_read(exec_ctx, t->ep, &t->read_buffer, &t->read_action_begin); + GRPC_CHTTP2_UNREF_TRANSPORT(exec_ctx, t, "keep_reading"); } else { - UNREF_TRANSPORT(exec_ctx, t, "reading_action"); + GRPC_CHTTP2_UNREF_TRANSPORT(exec_ctx, t, "reading_action"); } + + GPR_TIMER_END("post_reading_action_locked", 0); + + GRPC_ERROR_UNREF(error); + + GPR_TIMER_END("reading_action_locked", 0); } /******************************************************************************* * CALLBACK LOOP */ -static void connectivity_state_set( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_global *transport_global, - grpc_connectivity_state state, grpc_error *error, const char *reason) { +static void connectivity_state_set(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + grpc_connectivity_state state, + grpc_error *error, const char *reason) { GRPC_CHTTP2_IF_TRACING( gpr_log(GPR_DEBUG, "set connectivity_state=%d", state)); - grpc_connectivity_state_set( - exec_ctx, - &TRANSPORT_FROM_GLOBAL(transport_global)->channel_callback.state_tracker, - state, error, reason); + grpc_connectivity_state_set(exec_ctx, &t->channel_callback.state_tracker, + state, error, reason); } /******************************************************************************* * POLLSET STUFF */ -static void add_to_pollset_locked(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t, - grpc_chttp2_stream *s_unused, void *pollset) { - if (t->ep) { - grpc_endpoint_add_to_pollset(exec_ctx, t->ep, pollset); - } -} - -static void add_to_pollset_set_locked(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t, - grpc_chttp2_stream *s_unused, - void *pollset_set) { - if (t->ep) { - grpc_endpoint_add_to_pollset_set(exec_ctx, t->ep, pollset_set); - } -} - static void set_pollset(grpc_exec_ctx *exec_ctx, grpc_transport *gt, grpc_stream *gs, grpc_pollset *pollset) { - /* TODO(ctiller): keep pollset alive */ - grpc_chttp2_run_with_global_lock(exec_ctx, (grpc_chttp2_transport *)gt, - (grpc_chttp2_stream *)gs, - add_to_pollset_locked, pollset, 0); + grpc_chttp2_transport *t = (grpc_chttp2_transport *)gt; + grpc_endpoint_add_to_pollset(exec_ctx, t->ep, pollset); } static void set_pollset_set(grpc_exec_ctx *exec_ctx, grpc_transport *gt, grpc_stream *gs, grpc_pollset_set *pollset_set) { - grpc_chttp2_run_with_global_lock(exec_ctx, (grpc_chttp2_transport *)gt, - (grpc_chttp2_stream *)gs, - add_to_pollset_set_locked, pollset_set, 0); + grpc_chttp2_transport *t = (grpc_chttp2_transport *)gt; + grpc_endpoint_add_to_pollset_set(exec_ctx, t->ep, pollset_set); } /******************************************************************************* @@ -2197,19 +1860,21 @@ static void incoming_byte_stream_unref(grpc_exec_ctx *exec_ctx, if (gpr_unref(&bs->refs)) { GRPC_ERROR_UNREF(bs->error); gpr_slice_buffer_destroy(&bs->slices); + gpr_mu_destroy(&bs->slice_mu); gpr_free(bs); } } -static void incoming_byte_stream_update_flow_control( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global, size_t max_size_hint, - size_t have_already) { +static void incoming_byte_stream_update_flow_control(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s, + size_t max_size_hint, + size_t have_already) { uint32_t max_recv_bytes; /* clamp max recv hint to an allowable size */ - if (max_size_hint >= UINT32_MAX - transport_global->stream_lookahead) { - max_recv_bytes = UINT32_MAX - transport_global->stream_lookahead; + if (max_size_hint >= UINT32_MAX - t->stream_lookahead) { + max_recv_bytes = UINT32_MAX - t->stream_lookahead; } else { max_recv_bytes = (uint32_t)max_size_hint; } @@ -2222,58 +1887,50 @@ static void incoming_byte_stream_update_flow_control( } /* add some small lookahead to keep pipelines flowing */ - GPR_ASSERT(max_recv_bytes <= UINT32_MAX - transport_global->stream_lookahead); - max_recv_bytes += transport_global->stream_lookahead; - if (stream_global->max_recv_bytes < max_recv_bytes) { - uint32_t add_max_recv_bytes = - max_recv_bytes - stream_global->max_recv_bytes; - GRPC_CHTTP2_FLOW_CREDIT_STREAM("op", transport_global, stream_global, - max_recv_bytes, add_max_recv_bytes); - GRPC_CHTTP2_FLOW_CREDIT_STREAM("op", transport_global, stream_global, - unannounced_incoming_window_for_parse, + GPR_ASSERT(max_recv_bytes <= UINT32_MAX - t->stream_lookahead); + max_recv_bytes += t->stream_lookahead; + if (s->max_recv_bytes < max_recv_bytes) { + uint32_t add_max_recv_bytes = max_recv_bytes - s->max_recv_bytes; + bool new_window_write_is_covered_by_poller = + s->max_recv_bytes < have_already; + GRPC_CHTTP2_FLOW_CREDIT_STREAM("op", t, s, max_recv_bytes, add_max_recv_bytes); - GRPC_CHTTP2_FLOW_CREDIT_STREAM("op", transport_global, stream_global, - unannounced_incoming_window_for_writing, + GRPC_CHTTP2_FLOW_CREDIT_STREAM("op", t, s, incoming_window, add_max_recv_bytes); - grpc_chttp2_list_add_unannounced_incoming_window_available(transport_global, - stream_global); - grpc_chttp2_become_writable(exec_ctx, transport_global, stream_global, - false, "read_incoming_stream"); + GRPC_CHTTP2_FLOW_CREDIT_STREAM("op", t, s, announce_window, + add_max_recv_bytes); + grpc_chttp2_become_writable(exec_ctx, t, s, + new_window_write_is_covered_by_poller, + "read_incoming_stream"); } } -typedef struct { - grpc_chttp2_incoming_byte_stream *byte_stream; - gpr_slice *slice; - size_t max_size_hint; - grpc_closure *on_complete; -} incoming_byte_stream_next_arg; - static void incoming_byte_stream_next_locked(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t, - grpc_chttp2_stream *s, - void *argp) { - incoming_byte_stream_next_arg *arg = argp; - grpc_chttp2_incoming_byte_stream *bs = - (grpc_chttp2_incoming_byte_stream *)arg->byte_stream; - grpc_chttp2_transport_global *transport_global = &bs->transport->global; - grpc_chttp2_stream_global *stream_global = &bs->stream->global; + void *argp, + grpc_error *error_ignored) { + grpc_chttp2_incoming_byte_stream *bs = argp; + grpc_chttp2_transport *t = bs->transport; + grpc_chttp2_stream *s = bs->stream; if (bs->is_tail) { - incoming_byte_stream_update_flow_control(exec_ctx, transport_global, - stream_global, arg->max_size_hint, - bs->slices.length); + gpr_mu_lock(&bs->slice_mu); + size_t cur_length = bs->slices.length; + gpr_mu_unlock(&bs->slice_mu); + incoming_byte_stream_update_flow_control( + exec_ctx, t, s, bs->next_action.max_size_hint, cur_length); } + gpr_mu_lock(&bs->slice_mu); if (bs->slices.count > 0) { - *arg->slice = gpr_slice_buffer_take_first(&bs->slices); - grpc_exec_ctx_sched(exec_ctx, arg->on_complete, GRPC_ERROR_NONE, NULL); + *bs->next_action.slice = gpr_slice_buffer_take_first(&bs->slices); + grpc_closure_run(exec_ctx, bs->next_action.on_complete, GRPC_ERROR_NONE); } else if (bs->error != GRPC_ERROR_NONE) { - grpc_exec_ctx_sched(exec_ctx, arg->on_complete, GRPC_ERROR_REF(bs->error), - NULL); + grpc_closure_run(exec_ctx, bs->next_action.on_complete, + GRPC_ERROR_REF(bs->error)); } else { - bs->on_next = arg->on_complete; - bs->next = arg->slice; + bs->on_next = bs->next_action.on_complete; + bs->next = bs->next_action.slice; } + gpr_mu_unlock(&bs->slice_mu); incoming_byte_stream_unref(exec_ctx, bs); } @@ -2281,13 +1938,18 @@ static int incoming_byte_stream_next(grpc_exec_ctx *exec_ctx, grpc_byte_stream *byte_stream, gpr_slice *slice, size_t max_size_hint, grpc_closure *on_complete) { + GPR_TIMER_BEGIN("incoming_byte_stream_next", 0); grpc_chttp2_incoming_byte_stream *bs = (grpc_chttp2_incoming_byte_stream *)byte_stream; - incoming_byte_stream_next_arg arg = {bs, slice, max_size_hint, on_complete}; gpr_ref(&bs->refs); - grpc_chttp2_run_with_global_lock(exec_ctx, bs->transport, bs->stream, - incoming_byte_stream_next_locked, &arg, - sizeof(arg)); + bs->next_action.slice = slice; + bs->next_action.max_size_hint = max_size_hint; + bs->next_action.on_complete = on_complete; + grpc_closure_init(&bs->next_action.closure, incoming_byte_stream_next_locked, + bs); + grpc_combiner_execute(exec_ctx, bs->transport->combiner, + &bs->next_action.closure, GRPC_ERROR_NONE, false); + GPR_TIMER_END("incoming_byte_stream_next", 0); return 0; } @@ -2295,141 +1957,101 @@ static void incoming_byte_stream_destroy(grpc_exec_ctx *exec_ctx, grpc_byte_stream *byte_stream); static void incoming_byte_stream_destroy_locked(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t, - grpc_chttp2_stream *s, - void *byte_stream) { + void *byte_stream, + grpc_error *error_ignored) { grpc_chttp2_incoming_byte_stream *bs = byte_stream; GPR_ASSERT(bs->base.destroy == incoming_byte_stream_destroy); - decrement_active_streams_locked(exec_ctx, &bs->transport->global, - &bs->stream->global); + decrement_active_streams_locked(exec_ctx, bs->transport, bs->stream); incoming_byte_stream_unref(exec_ctx, bs); } static void incoming_byte_stream_destroy(grpc_exec_ctx *exec_ctx, grpc_byte_stream *byte_stream) { + GPR_TIMER_BEGIN("incoming_byte_stream_destroy", 0); grpc_chttp2_incoming_byte_stream *bs = (grpc_chttp2_incoming_byte_stream *)byte_stream; - grpc_chttp2_run_with_global_lock(exec_ctx, bs->transport, bs->stream, - incoming_byte_stream_destroy_locked, bs, 0); -} - -typedef struct { - grpc_chttp2_incoming_byte_stream *byte_stream; - gpr_slice slice; -} incoming_byte_stream_push_arg; - -static void incoming_byte_stream_push_locked(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t, - grpc_chttp2_stream *s, - void *argp) { - incoming_byte_stream_push_arg *arg = argp; - grpc_chttp2_incoming_byte_stream *bs = arg->byte_stream; - if (bs->on_next != NULL) { - *bs->next = arg->slice; - grpc_exec_ctx_sched(exec_ctx, bs->on_next, GRPC_ERROR_NONE, NULL); - bs->on_next = NULL; - } else { - gpr_slice_buffer_add(&bs->slices, arg->slice); - } - incoming_byte_stream_unref(exec_ctx, bs); -} - -void grpc_chttp2_incoming_byte_stream_push(grpc_exec_ctx *exec_ctx, - grpc_chttp2_incoming_byte_stream *bs, - gpr_slice slice) { - incoming_byte_stream_push_arg arg = {bs, slice}; - gpr_ref(&bs->refs); - grpc_chttp2_run_with_global_lock(exec_ctx, bs->transport, bs->stream, - incoming_byte_stream_push_locked, &arg, - sizeof(arg)); -} - -typedef struct { - grpc_chttp2_incoming_byte_stream *bs; - grpc_error *error; -} bs_fail_args; - -static bs_fail_args *make_bs_fail_args(grpc_chttp2_incoming_byte_stream *bs, - grpc_error *error) { - bs_fail_args *a = gpr_malloc(sizeof(*a)); - a->bs = bs; - a->error = error; - return a; + grpc_closure_init(&bs->destroy_action, incoming_byte_stream_destroy_locked, + bs); + grpc_combiner_execute(exec_ctx, bs->transport->combiner, &bs->destroy_action, + GRPC_ERROR_NONE, false); + GPR_TIMER_END("incoming_byte_stream_destroy", 0); } -static void incoming_byte_stream_finished_failed_locked( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, grpc_chttp2_stream *s, - void *argp) { - bs_fail_args *a = argp; - grpc_chttp2_incoming_byte_stream *bs = a->bs; - grpc_error *error = a->error; - gpr_free(a); +static void incoming_byte_stream_publish_error( + grpc_exec_ctx *exec_ctx, grpc_chttp2_incoming_byte_stream *bs, + grpc_error *error) { + GPR_ASSERT(error != GRPC_ERROR_NONE); grpc_exec_ctx_sched(exec_ctx, bs->on_next, GRPC_ERROR_REF(error), NULL); bs->on_next = NULL; GRPC_ERROR_UNREF(bs->error); bs->error = error; - incoming_byte_stream_unref(exec_ctx, bs); } -static void incoming_byte_stream_finished_ok_locked(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *t, - grpc_chttp2_stream *s, - void *argp) { - grpc_chttp2_incoming_byte_stream *bs = argp; - incoming_byte_stream_unref(exec_ctx, bs); +void grpc_chttp2_incoming_byte_stream_push(grpc_exec_ctx *exec_ctx, + grpc_chttp2_incoming_byte_stream *bs, + gpr_slice slice) { + gpr_mu_lock(&bs->slice_mu); + if (bs->remaining_bytes < GPR_SLICE_LENGTH(slice)) { + incoming_byte_stream_publish_error( + exec_ctx, bs, GRPC_ERROR_CREATE("Too many bytes in stream")); + } else { + bs->remaining_bytes -= (uint32_t)GPR_SLICE_LENGTH(slice); + if (bs->on_next != NULL) { + *bs->next = slice; + grpc_exec_ctx_sched(exec_ctx, bs->on_next, GRPC_ERROR_NONE, NULL); + bs->on_next = NULL; + } else { + gpr_slice_buffer_add(&bs->slices, slice); + } + } + gpr_mu_unlock(&bs->slice_mu); } void grpc_chttp2_incoming_byte_stream_finished( grpc_exec_ctx *exec_ctx, grpc_chttp2_incoming_byte_stream *bs, - grpc_error *error, int from_parsing_thread) { - if (from_parsing_thread) { - if (error == GRPC_ERROR_NONE) { - grpc_chttp2_run_with_global_lock(exec_ctx, bs->transport, bs->stream, - incoming_byte_stream_finished_ok_locked, - bs, 0); - } else { - grpc_chttp2_run_with_global_lock( - exec_ctx, bs->transport, bs->stream, - incoming_byte_stream_finished_failed_locked, - make_bs_fail_args(bs, error), 0); - } - } else { - if (error == GRPC_ERROR_NONE) { - incoming_byte_stream_finished_ok_locked(exec_ctx, bs->transport, - bs->stream, bs); - } else { - incoming_byte_stream_finished_failed_locked( - exec_ctx, bs->transport, bs->stream, make_bs_fail_args(bs, error)); + grpc_error *error) { + if (error == GRPC_ERROR_NONE) { + gpr_mu_lock(&bs->slice_mu); + if (bs->remaining_bytes != 0) { + error = GRPC_ERROR_CREATE("Truncated message"); } + gpr_mu_unlock(&bs->slice_mu); + } + if (error != GRPC_ERROR_NONE) { + incoming_byte_stream_publish_error(exec_ctx, bs, error); } + incoming_byte_stream_unref(exec_ctx, bs); } grpc_chttp2_incoming_byte_stream *grpc_chttp2_incoming_byte_stream_create( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_parsing *stream_parsing, uint32_t frame_size, - uint32_t flags, grpc_chttp2_incoming_frame_queue *add_to_queue) { + grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, grpc_chttp2_stream *s, + uint32_t frame_size, uint32_t flags) { grpc_chttp2_incoming_byte_stream *incoming_byte_stream = gpr_malloc(sizeof(*incoming_byte_stream)); incoming_byte_stream->base.length = frame_size; + incoming_byte_stream->remaining_bytes = frame_size; incoming_byte_stream->base.flags = flags; incoming_byte_stream->base.next = incoming_byte_stream_next; incoming_byte_stream->base.destroy = incoming_byte_stream_destroy; + gpr_mu_init(&incoming_byte_stream->slice_mu); gpr_ref_init(&incoming_byte_stream->refs, 2); incoming_byte_stream->next_message = NULL; - incoming_byte_stream->transport = TRANSPORT_FROM_PARSING(transport_parsing); - incoming_byte_stream->stream = STREAM_FROM_PARSING(stream_parsing); - gpr_ref(&incoming_byte_stream->stream->global.active_streams); + incoming_byte_stream->transport = t; + incoming_byte_stream->stream = s; + gpr_ref(&incoming_byte_stream->stream->active_streams); gpr_slice_buffer_init(&incoming_byte_stream->slices); incoming_byte_stream->on_next = NULL; incoming_byte_stream->is_tail = 1; incoming_byte_stream->error = GRPC_ERROR_NONE; - if (add_to_queue->head == NULL) { - add_to_queue->head = incoming_byte_stream; + grpc_chttp2_incoming_frame_queue *q = &s->incoming_frames; + if (q->head == NULL) { + q->head = incoming_byte_stream; } else { - add_to_queue->tail->is_tail = 0; - add_to_queue->tail->next_message = incoming_byte_stream; + q->tail->is_tail = 0; + q->tail->next_message = incoming_byte_stream; } - add_to_queue->tail = incoming_byte_stream; + q->tail = incoming_byte_stream; + grpc_chttp2_maybe_complete_recv_message(exec_ctx, t, s); return incoming_byte_stream; } @@ -2438,40 +2060,30 @@ grpc_chttp2_incoming_byte_stream *grpc_chttp2_incoming_byte_stream_create( */ static char *format_flowctl_context_var(const char *context, const char *var, - int64_t val, uint32_t id, - char **scope) { - char *underscore_pos; - char *buf; - char *result; + int64_t val, uint32_t id) { + char *name; if (context == NULL) { - *scope = NULL; - gpr_asprintf(&buf, "%s(%" PRId64 ")", var, val); - result = gpr_leftpad(buf, ' ', 60); - gpr_free(buf); - return result; - } - underscore_pos = strchr(context, '_'); - *scope = gpr_strdup(context); - (*scope)[underscore_pos - context] = 0; - if (id != 0) { - char *tmp = *scope; - gpr_asprintf(scope, "%s[%d]", tmp, id); - gpr_free(tmp); - } - gpr_asprintf(&buf, "%s.%s(%" PRId64 ")", underscore_pos + 1, var, val); - result = gpr_leftpad(buf, ' ', 60); - gpr_free(buf); - return result; -} - -static int samestr(char *a, char *b) { - if (a == NULL) { - return b == NULL; - } - if (b == NULL) { - return 0; + name = gpr_strdup(var); + } else if (0 == strcmp(context, "t")) { + GPR_ASSERT(id == 0); + gpr_asprintf(&name, "TRANSPORT:%s", var); + } else if (0 == strcmp(context, "s")) { + GPR_ASSERT(id != 0); + gpr_asprintf(&name, "STREAM[%d]:%s", id, var); + } else { + gpr_asprintf(&name, "BAD_CONTEXT[%s][%d]:%s", context, id, var); } - return 0 == strcmp(a, b); + char *name_fld = gpr_leftpad(name, ' ', 64); + char *value; + gpr_asprintf(&value, "%" PRId64, val); + char *value_fld = gpr_leftpad(value, ' ', 8); + char *result; + gpr_asprintf(&result, "%s %s", name_fld, value_fld); + gpr_free(name); + gpr_free(name_fld); + gpr_free(value); + gpr_free(value_fld); + return result; } void grpc_chttp2_flowctl_trace(const char *file, int line, const char *phase, @@ -2479,26 +2091,18 @@ void grpc_chttp2_flowctl_trace(const char *file, int line, const char *phase, const char *var1, const char *context2, const char *var2, int is_client, uint32_t stream_id, int64_t val1, int64_t val2) { - char *scope1; - char *scope2; char *tmp_phase; - char *tmp_scope1; - char *label1 = - format_flowctl_context_var(context1, var1, val1, stream_id, &scope1); - char *label2 = - format_flowctl_context_var(context2, var2, val2, stream_id, &scope2); + char *label1 = format_flowctl_context_var(context1, var1, val1, stream_id); + char *label2 = format_flowctl_context_var(context2, var2, val2, stream_id); char *clisvr = is_client ? "client" : "server"; char *prefix; tmp_phase = gpr_leftpad(phase, ' ', 8); - tmp_scope1 = gpr_leftpad(scope1, ' ', 11); - gpr_asprintf(&prefix, "FLOW %s: %s %s ", tmp_phase, clisvr, scope1); + gpr_asprintf(&prefix, "FLOW %s: %s ", tmp_phase, clisvr); gpr_free(tmp_phase); - gpr_free(tmp_scope1); switch (op) { case GRPC_CHTTP2_FLOWCTL_MOVE: - GPR_ASSERT(samestr(scope1, scope2)); if (val2 != 0) { gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG, "%sMOVE %s <- %s giving %" PRId64, prefix, label1, label2, @@ -2523,8 +2127,6 @@ void grpc_chttp2_flowctl_trace(const char *file, int line, const char *phase, break; } - gpr_free(scope1); - gpr_free(scope2); gpr_free(label1); gpr_free(label2); gpr_free(prefix); @@ -2561,10 +2163,11 @@ void grpc_chttp2_transport_start_reading(grpc_exec_ctx *exec_ctx, grpc_transport *transport, gpr_slice_buffer *read_buffer) { grpc_chttp2_transport *t = (grpc_chttp2_transport *)transport; - REF_TRANSPORT(t, "reading_action"); /* matches unref inside reading_action */ + GRPC_CHTTP2_REF_TRANSPORT( + t, "reading_action"); /* matches unref inside reading_action */ if (read_buffer != NULL) { gpr_slice_buffer_move_into(read_buffer, &t->read_buffer); gpr_free(read_buffer); } - reading_action(exec_ctx, t, GRPC_ERROR_NONE); + read_action_begin(exec_ctx, t, GRPC_ERROR_NONE); } diff --git a/src/core/ext/transport/chttp2/transport/frame.h b/src/core/ext/transport/chttp2/transport/frame.h index 507aae4100..1e444a91fd 100644 --- a/src/core/ext/transport/chttp2/transport/frame.h +++ b/src/core/ext/transport/chttp2/transport/frame.h @@ -40,8 +40,8 @@ #include "src/core/lib/iomgr/error.h" /* defined in internal.h */ -typedef struct grpc_chttp2_stream_parsing grpc_chttp2_stream_parsing; -typedef struct grpc_chttp2_transport_parsing grpc_chttp2_transport_parsing; +typedef struct grpc_chttp2_stream grpc_chttp2_stream; +typedef struct grpc_chttp2_transport grpc_chttp2_transport; #define GRPC_CHTTP2_FRAME_DATA 0 #define GRPC_CHTTP2_FRAME_HEADER 1 diff --git a/src/core/ext/transport/chttp2/transport/frame_data.c b/src/core/ext/transport/chttp2/transport/frame_data.c index 9046fbc453..8668816930 100644 --- a/src/core/ext/transport/chttp2/transport/frame_data.c +++ b/src/core/ext/transport/chttp2/transport/frame_data.c @@ -51,16 +51,11 @@ grpc_error *grpc_chttp2_data_parser_init(grpc_chttp2_data_parser *parser) { void grpc_chttp2_data_parser_destroy(grpc_exec_ctx *exec_ctx, grpc_chttp2_data_parser *parser) { - grpc_byte_stream *bs; - if (parser->parsing_frame) { + if (parser->parsing_frame != NULL) { grpc_chttp2_incoming_byte_stream_finished( - exec_ctx, parser->parsing_frame, GRPC_ERROR_CREATE("Parser destroyed"), - 1); - } - while ( - (bs = grpc_chttp2_incoming_frame_queue_pop(&parser->incoming_frames))) { - grpc_byte_stream_destroy(exec_ctx, bs); + exec_ctx, parser->parsing_frame, GRPC_ERROR_CREATE("Parser destroyed")); } + GRPC_ERROR_UNREF(parser->error); } grpc_error *grpc_chttp2_data_parser_begin_frame(grpc_chttp2_data_parser *parser, @@ -145,22 +140,17 @@ void grpc_chttp2_encode_data(uint32_t id, gpr_slice_buffer *inbuf, stats->data_bytes += write_bytes; } -grpc_error *grpc_chttp2_data_parser_parse( - grpc_exec_ctx *exec_ctx, void *parser, - grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last) { +static grpc_error *parse_inner(grpc_exec_ctx *exec_ctx, + grpc_chttp2_data_parser *p, + grpc_chttp2_transport *t, grpc_chttp2_stream *s, + gpr_slice slice) { uint8_t *const beg = GPR_SLICE_START_PTR(slice); uint8_t *const end = GPR_SLICE_END_PTR(slice); uint8_t *cur = beg; - grpc_chttp2_data_parser *p = parser; uint32_t message_flags; grpc_chttp2_incoming_byte_stream *incoming_byte_stream; char *msg; - if (is_last && p->is_last_frame) { - stream_parsing->received_close = 1; - } - if (cur == end) { return GRPC_ERROR_NONE; } @@ -171,7 +161,7 @@ grpc_error *grpc_chttp2_data_parser_parse( return GRPC_ERROR_REF(p->error); fh_0: case GRPC_CHTTP2_DATA_FH_0: - stream_parsing->stats.incoming.framing_bytes++; + s->stats.incoming.framing_bytes++; p->frame_type = *cur; switch (p->frame_type) { case 0: @@ -184,7 +174,7 @@ grpc_error *grpc_chttp2_data_parser_parse( gpr_asprintf(&msg, "Bad GRPC frame type 0x%02x", p->frame_type); p->error = GRPC_ERROR_CREATE(msg); p->error = grpc_error_set_int(p->error, GRPC_ERROR_INT_STREAM_ID, - (intptr_t)stream_parsing->id); + (intptr_t)s->id); gpr_free(msg); msg = gpr_dump_slice(slice, GPR_DUMP_HEX | GPR_DUMP_ASCII); p->error = @@ -201,7 +191,7 @@ grpc_error *grpc_chttp2_data_parser_parse( } /* fallthrough */ case GRPC_CHTTP2_DATA_FH_1: - stream_parsing->stats.incoming.framing_bytes++; + s->stats.incoming.framing_bytes++; p->frame_size = ((uint32_t)*cur) << 24; if (++cur == end) { p->state = GRPC_CHTTP2_DATA_FH_2; @@ -209,7 +199,7 @@ grpc_error *grpc_chttp2_data_parser_parse( } /* fallthrough */ case GRPC_CHTTP2_DATA_FH_2: - stream_parsing->stats.incoming.framing_bytes++; + s->stats.incoming.framing_bytes++; p->frame_size |= ((uint32_t)*cur) << 16; if (++cur == end) { p->state = GRPC_CHTTP2_DATA_FH_3; @@ -217,7 +207,7 @@ grpc_error *grpc_chttp2_data_parser_parse( } /* fallthrough */ case GRPC_CHTTP2_DATA_FH_3: - stream_parsing->stats.incoming.framing_bytes++; + s->stats.incoming.framing_bytes++; p->frame_size |= ((uint32_t)*cur) << 8; if (++cur == end) { p->state = GRPC_CHTTP2_DATA_FH_4; @@ -225,7 +215,7 @@ grpc_error *grpc_chttp2_data_parser_parse( } /* fallthrough */ case GRPC_CHTTP2_DATA_FH_4: - stream_parsing->stats.incoming.framing_bytes++; + s->stats.incoming.framing_bytes++; p->frame_size |= ((uint32_t)*cur); p->state = GRPC_CHTTP2_DATA_FRAME; ++cur; @@ -234,35 +224,32 @@ grpc_error *grpc_chttp2_data_parser_parse( message_flags |= GRPC_WRITE_INTERNAL_COMPRESS; } p->parsing_frame = incoming_byte_stream = - grpc_chttp2_incoming_byte_stream_create( - exec_ctx, transport_parsing, stream_parsing, p->frame_size, - message_flags, &p->incoming_frames); + grpc_chttp2_incoming_byte_stream_create(exec_ctx, t, s, p->frame_size, + message_flags); /* fallthrough */ case GRPC_CHTTP2_DATA_FRAME: - grpc_chttp2_list_add_parsing_seen_stream(transport_parsing, - stream_parsing); if (cur == end) { return GRPC_ERROR_NONE; } uint32_t remaining = (uint32_t)(end - cur); if (remaining == p->frame_size) { - stream_parsing->stats.incoming.data_bytes += p->frame_size; + s->stats.incoming.data_bytes += p->frame_size; grpc_chttp2_incoming_byte_stream_push( exec_ctx, p->parsing_frame, gpr_slice_sub(slice, (size_t)(cur - beg), (size_t)(end - beg))); grpc_chttp2_incoming_byte_stream_finished(exec_ctx, p->parsing_frame, - GRPC_ERROR_NONE, 1); + GRPC_ERROR_NONE); p->parsing_frame = NULL; p->state = GRPC_CHTTP2_DATA_FH_0; return GRPC_ERROR_NONE; } else if (remaining > p->frame_size) { - stream_parsing->stats.incoming.data_bytes += p->frame_size; + s->stats.incoming.data_bytes += p->frame_size; grpc_chttp2_incoming_byte_stream_push( exec_ctx, p->parsing_frame, gpr_slice_sub(slice, (size_t)(cur - beg), (size_t)(cur + p->frame_size - beg))); grpc_chttp2_incoming_byte_stream_finished(exec_ctx, p->parsing_frame, - GRPC_ERROR_NONE, 1); + GRPC_ERROR_NONE); p->parsing_frame = NULL; cur += p->frame_size; goto fh_0; /* loop */ @@ -272,10 +259,25 @@ grpc_error *grpc_chttp2_data_parser_parse( exec_ctx, p->parsing_frame, gpr_slice_sub(slice, (size_t)(cur - beg), (size_t)(end - beg))); p->frame_size -= remaining; - stream_parsing->stats.incoming.data_bytes += remaining; + s->stats.incoming.data_bytes += remaining; return GRPC_ERROR_NONE; } } GPR_UNREACHABLE_CODE(return GRPC_ERROR_CREATE("Should never reach here")); } + +grpc_error *grpc_chttp2_data_parser_parse(grpc_exec_ctx *exec_ctx, void *parser, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s, + gpr_slice slice, int is_last) { + grpc_chttp2_data_parser *p = parser; + grpc_error *error = parse_inner(exec_ctx, p, t, s, slice); + + if (is_last && p->is_last_frame) { + grpc_chttp2_mark_stream_closed(exec_ctx, t, s, true, false, + GRPC_ERROR_NONE); + } + + return error; +} diff --git a/src/core/ext/transport/chttp2/transport/frame_data.h b/src/core/ext/transport/chttp2/transport/frame_data.h index a21a7942b9..eb2d97d898 100644 --- a/src/core/ext/transport/chttp2/transport/frame_data.h +++ b/src/core/ext/transport/chttp2/transport/frame_data.h @@ -69,7 +69,6 @@ typedef struct { grpc_error *error; int is_frame_compressed; - grpc_chttp2_incoming_frame_queue incoming_frames; grpc_chttp2_incoming_byte_stream *parsing_frame; } grpc_chttp2_data_parser; @@ -92,10 +91,10 @@ grpc_error *grpc_chttp2_data_parser_begin_frame(grpc_chttp2_data_parser *parser, /* handle a slice of a data frame - is_last indicates the last slice of a frame */ -grpc_error *grpc_chttp2_data_parser_parse( - grpc_exec_ctx *exec_ctx, void *parser, - grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last); +grpc_error *grpc_chttp2_data_parser_parse(grpc_exec_ctx *exec_ctx, void *parser, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s, + gpr_slice slice, int is_last); void grpc_chttp2_encode_data(uint32_t id, gpr_slice_buffer *inbuf, uint32_t write_bytes, int is_eof, diff --git a/src/core/ext/transport/chttp2/transport/frame_goaway.c b/src/core/ext/transport/chttp2/transport/frame_goaway.c index 299e27ad70..33d2269169 100644 --- a/src/core/ext/transport/chttp2/transport/frame_goaway.c +++ b/src/core/ext/transport/chttp2/transport/frame_goaway.c @@ -67,10 +67,11 @@ grpc_error *grpc_chttp2_goaway_parser_begin_frame(grpc_chttp2_goaway_parser *p, return GRPC_ERROR_NONE; } -grpc_error *grpc_chttp2_goaway_parser_parse( - grpc_exec_ctx *exec_ctx, void *parser, - grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last) { +grpc_error *grpc_chttp2_goaway_parser_parse(grpc_exec_ctx *exec_ctx, + void *parser, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s, + gpr_slice slice, int is_last) { uint8_t *const beg = GPR_SLICE_START_PTR(slice); uint8_t *const end = GPR_SLICE_END_PTR(slice); uint8_t *cur = beg; @@ -148,12 +149,9 @@ grpc_error *grpc_chttp2_goaway_parser_parse( p->debug_pos += (uint32_t)(end - cur); p->state = GRPC_CHTTP2_GOAWAY_DEBUG; if (is_last) { - transport_parsing->goaway_received = 1; - transport_parsing->goaway_last_stream_index = p->last_stream_id; - gpr_slice_unref(transport_parsing->goaway_text); - transport_parsing->goaway_error = (grpc_status_code)p->error_code; - transport_parsing->goaway_text = - gpr_slice_new(p->debug_data, p->debug_length, gpr_free); + grpc_chttp2_add_incoming_goaway( + exec_ctx, t, (uint32_t)p->error_code, + gpr_slice_new(p->debug_data, p->debug_length, gpr_free)); p->debug_data = NULL; } return GRPC_ERROR_NONE; diff --git a/src/core/ext/transport/chttp2/transport/frame_goaway.h b/src/core/ext/transport/chttp2/transport/frame_goaway.h index eb4303405a..355104a5a7 100644 --- a/src/core/ext/transport/chttp2/transport/frame_goaway.h +++ b/src/core/ext/transport/chttp2/transport/frame_goaway.h @@ -65,10 +65,11 @@ void grpc_chttp2_goaway_parser_init(grpc_chttp2_goaway_parser *p); void grpc_chttp2_goaway_parser_destroy(grpc_chttp2_goaway_parser *p); grpc_error *grpc_chttp2_goaway_parser_begin_frame( grpc_chttp2_goaway_parser *parser, uint32_t length, uint8_t flags); -grpc_error *grpc_chttp2_goaway_parser_parse( - grpc_exec_ctx *exec_ctx, void *parser, - grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last); +grpc_error *grpc_chttp2_goaway_parser_parse(grpc_exec_ctx *exec_ctx, + void *parser, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s, + gpr_slice slice, int is_last); void grpc_chttp2_goaway_append(uint32_t last_stream_id, uint32_t error_code, gpr_slice debug_data, diff --git a/src/core/ext/transport/chttp2/transport/frame_ping.c b/src/core/ext/transport/chttp2/transport/frame_ping.c index 1f814ab1bd..624f42649d 100644 --- a/src/core/ext/transport/chttp2/transport/frame_ping.c +++ b/src/core/ext/transport/chttp2/transport/frame_ping.c @@ -73,10 +73,10 @@ grpc_error *grpc_chttp2_ping_parser_begin_frame(grpc_chttp2_ping_parser *parser, return GRPC_ERROR_NONE; } -grpc_error *grpc_chttp2_ping_parser_parse( - grpc_exec_ctx *exec_ctx, void *parser, - grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last) { +grpc_error *grpc_chttp2_ping_parser_parse(grpc_exec_ctx *exec_ctx, void *parser, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s, + gpr_slice slice, int is_last) { uint8_t *const beg = GPR_SLICE_START_PTR(slice); uint8_t *const end = GPR_SLICE_END_PTR(slice); uint8_t *cur = beg; @@ -91,10 +91,11 @@ grpc_error *grpc_chttp2_ping_parser_parse( if (p->byte == 8) { GPR_ASSERT(is_last); if (p->is_ack) { - grpc_chttp2_ack_ping(exec_ctx, transport_parsing, p->opaque_8bytes); + grpc_chttp2_ack_ping(exec_ctx, t, p->opaque_8bytes); } else { - gpr_slice_buffer_add(&transport_parsing->qbuf, + gpr_slice_buffer_add(&t->qbuf, grpc_chttp2_ping_create(1, p->opaque_8bytes)); + grpc_chttp2_initiate_write(exec_ctx, t, false, "ping response"); } } diff --git a/src/core/ext/transport/chttp2/transport/frame_ping.h b/src/core/ext/transport/chttp2/transport/frame_ping.h index 5a8723421c..2071f647fb 100644 --- a/src/core/ext/transport/chttp2/transport/frame_ping.h +++ b/src/core/ext/transport/chttp2/transport/frame_ping.h @@ -48,9 +48,9 @@ gpr_slice grpc_chttp2_ping_create(uint8_t ack, uint8_t *opaque_8bytes); grpc_error *grpc_chttp2_ping_parser_begin_frame(grpc_chttp2_ping_parser *parser, uint32_t length, uint8_t flags); -grpc_error *grpc_chttp2_ping_parser_parse( - grpc_exec_ctx *exec_ctx, void *parser, - grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last); +grpc_error *grpc_chttp2_ping_parser_parse(grpc_exec_ctx *exec_ctx, void *parser, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s, + gpr_slice slice, int is_last); #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_PING_H */ diff --git a/src/core/ext/transport/chttp2/transport/frame_rst_stream.c b/src/core/ext/transport/chttp2/transport/frame_rst_stream.c index e3a3c9e4a7..1bb6ed82b1 100644 --- a/src/core/ext/transport/chttp2/transport/frame_rst_stream.c +++ b/src/core/ext/transport/chttp2/transport/frame_rst_stream.c @@ -39,6 +39,8 @@ #include <grpc/support/string_util.h> #include "src/core/ext/transport/chttp2/transport/frame.h" +#include "src/core/ext/transport/chttp2/transport/http2_errors.h" +#include "src/core/ext/transport/chttp2/transport/status_conversion.h" gpr_slice grpc_chttp2_rst_stream_create(uint32_t id, uint32_t code, grpc_transport_one_way_stats *stats) { @@ -83,10 +85,11 @@ grpc_error *grpc_chttp2_rst_stream_parser_begin_frame( return GRPC_ERROR_NONE; } -grpc_error *grpc_chttp2_rst_stream_parser_parse( - grpc_exec_ctx *exec_ctx, void *parser, - grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last) { +grpc_error *grpc_chttp2_rst_stream_parser_parse(grpc_exec_ctx *exec_ctx, + void *parser, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s, + gpr_slice slice, int is_last) { uint8_t *const beg = GPR_SLICE_START_PTR(slice); uint8_t *const end = GPR_SLICE_END_PTR(slice); uint8_t *cur = beg; @@ -97,19 +100,28 @@ grpc_error *grpc_chttp2_rst_stream_parser_parse( cur++; p->byte++; } - stream_parsing->stats.incoming.framing_bytes += (uint64_t)(end - cur); + s->stats.incoming.framing_bytes += (uint64_t)(end - cur); if (p->byte == 4) { GPR_ASSERT(is_last); - stream_parsing->received_close = 1; - if (stream_parsing->forced_close_error == GRPC_ERROR_NONE) { - stream_parsing->forced_close_error = grpc_error_set_int( - GRPC_ERROR_CREATE("RST_STREAM"), GRPC_ERROR_INT_HTTP2_ERROR, - (intptr_t)((((uint32_t)p->reason_bytes[0]) << 24) | - (((uint32_t)p->reason_bytes[1]) << 16) | - (((uint32_t)p->reason_bytes[2]) << 8) | - (((uint32_t)p->reason_bytes[3])))); + uint32_t reason = (((uint32_t)p->reason_bytes[0]) << 24) | + (((uint32_t)p->reason_bytes[1]) << 16) | + (((uint32_t)p->reason_bytes[2]) << 8) | + (((uint32_t)p->reason_bytes[3])); + grpc_error *error = GRPC_ERROR_NONE; + if (reason != GRPC_CHTTP2_NO_ERROR) { + error = grpc_error_set_int(GRPC_ERROR_CREATE("RST_STREAM"), + GRPC_ERROR_INT_HTTP2_ERROR, reason); + grpc_status_code status_code = grpc_chttp2_http2_error_to_grpc_status( + (grpc_chttp2_error_code)reason, s->deadline); + char *status_details; + gpr_asprintf(&status_details, "Received RST_STREAM with error code %d", + reason); + gpr_slice slice_details = gpr_slice_from_copied_string(status_details); + gpr_free(status_details); + grpc_chttp2_fake_status(exec_ctx, t, s, status_code, &slice_details); } + grpc_chttp2_mark_stream_closed(exec_ctx, t, s, true, true, error); } return GRPC_ERROR_NONE; diff --git a/src/core/ext/transport/chttp2/transport/frame_rst_stream.h b/src/core/ext/transport/chttp2/transport/frame_rst_stream.h index 11cf94f3ea..5a1f578a29 100644 --- a/src/core/ext/transport/chttp2/transport/frame_rst_stream.h +++ b/src/core/ext/transport/chttp2/transport/frame_rst_stream.h @@ -49,9 +49,10 @@ gpr_slice grpc_chttp2_rst_stream_create(uint32_t stream_id, uint32_t code, grpc_error *grpc_chttp2_rst_stream_parser_begin_frame( grpc_chttp2_rst_stream_parser *parser, uint32_t length, uint8_t flags); -grpc_error *grpc_chttp2_rst_stream_parser_parse( - grpc_exec_ctx *exec_ctx, void *parser, - grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last); +grpc_error *grpc_chttp2_rst_stream_parser_parse(grpc_exec_ctx *exec_ctx, + void *parser, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s, + gpr_slice slice, int is_last); #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_RST_STREAM_H */ diff --git a/src/core/ext/transport/chttp2/transport/frame_settings.c b/src/core/ext/transport/chttp2/transport/frame_settings.c index 04b96c4cd9..fc0383d2e0 100644 --- a/src/core/ext/transport/chttp2/transport/frame_settings.c +++ b/src/core/ext/transport/chttp2/transport/frame_settings.c @@ -143,10 +143,10 @@ grpc_error *grpc_chttp2_settings_parser_begin_frame( } } -grpc_error *grpc_chttp2_settings_parser_parse( - grpc_exec_ctx *exec_ctx, void *p, - grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last) { +grpc_error *grpc_chttp2_settings_parser_parse(grpc_exec_ctx *exec_ctx, void *p, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s, + gpr_slice slice, int is_last) { grpc_chttp2_settings_parser *parser = p; const uint8_t *cur = GPR_SLICE_START_PTR(slice); const uint8_t *end = GPR_SLICE_END_PTR(slice); @@ -162,11 +162,9 @@ grpc_error *grpc_chttp2_settings_parser_parse( if (cur == end) { parser->state = GRPC_CHTTP2_SPS_ID0; if (is_last) { - transport_parsing->settings_updated = 1; memcpy(parser->target_settings, parser->incoming_settings, GRPC_CHTTP2_NUM_SETTINGS * sizeof(uint32_t)); - gpr_slice_buffer_add(&transport_parsing->qbuf, - grpc_chttp2_settings_ack_create()); + gpr_slice_buffer_add(&t->qbuf, grpc_chttp2_settings_ack_create()); } return GRPC_ERROR_NONE; } @@ -226,9 +224,9 @@ grpc_error *grpc_chttp2_settings_parser_parse( break; case GRPC_CHTTP2_DISCONNECT_ON_INVALID_VALUE: grpc_chttp2_goaway_append( - transport_parsing->last_incoming_stream_id, sp->error_value, + t->last_incoming_stream_id, sp->error_value, gpr_slice_from_static_string("HTTP2 settings error"), - &transport_parsing->qbuf); + &t->qbuf); gpr_asprintf(&msg, "invalid value %u passed for %s", parser->value, sp->name); grpc_error *err = GRPC_ERROR_CREATE(msg); @@ -238,18 +236,17 @@ grpc_error *grpc_chttp2_settings_parser_parse( } if (parser->id == GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE && parser->incoming_settings[parser->id] != parser->value) { - transport_parsing->initial_window_update = + t->initial_window_update = (int64_t)parser->value - parser->incoming_settings[parser->id]; if (grpc_http_trace) { gpr_log(GPR_DEBUG, "adding %d for initial_window change", - (int)transport_parsing->initial_window_update); + (int)t->initial_window_update); } } parser->incoming_settings[parser->id] = parser->value; if (grpc_http_trace) { gpr_log(GPR_DEBUG, "CHTTP2:%s: got setting %d = %d", - transport_parsing->is_client ? "CLI" : "SVR", parser->id, - parser->value); + t->is_client ? "CLI" : "SVR", parser->id, parser->value); } } else if (grpc_http_trace) { gpr_log(GPR_ERROR, "CHTTP2: Ignoring unknown setting %d (value %d)", diff --git a/src/core/ext/transport/chttp2/transport/frame_settings.h b/src/core/ext/transport/chttp2/transport/frame_settings.h index f654c598c8..4bfa944cf1 100644 --- a/src/core/ext/transport/chttp2/transport/frame_settings.h +++ b/src/core/ext/transport/chttp2/transport/frame_settings.h @@ -95,9 +95,10 @@ gpr_slice grpc_chttp2_settings_ack_create(void); grpc_error *grpc_chttp2_settings_parser_begin_frame( grpc_chttp2_settings_parser *parser, uint32_t length, uint8_t flags, uint32_t *settings); -grpc_error *grpc_chttp2_settings_parser_parse( - grpc_exec_ctx *exec_ctx, void *parser, - grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last); +grpc_error *grpc_chttp2_settings_parser_parse(grpc_exec_ctx *exec_ctx, + void *parser, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s, + gpr_slice slice, int is_last); #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_SETTINGS_H */ diff --git a/src/core/ext/transport/chttp2/transport/frame_window_update.c b/src/core/ext/transport/chttp2/transport/frame_window_update.c index 3cf848fd5c..418166a6df 100644 --- a/src/core/ext/transport/chttp2/transport/frame_window_update.c +++ b/src/core/ext/transport/chttp2/transport/frame_window_update.c @@ -80,9 +80,8 @@ grpc_error *grpc_chttp2_window_update_parser_begin_frame( } grpc_error *grpc_chttp2_window_update_parser_parse( - grpc_exec_ctx *exec_ctx, void *parser, - grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last) { + grpc_exec_ctx *exec_ctx, void *parser, grpc_chttp2_transport *t, + grpc_chttp2_stream *s, gpr_slice slice, int is_last) { uint8_t *const beg = GPR_SLICE_START_PTR(slice); uint8_t *const end = GPR_SLICE_END_PTR(slice); uint8_t *cur = beg; @@ -94,8 +93,8 @@ grpc_error *grpc_chttp2_window_update_parser_parse( p->byte++; } - if (stream_parsing != NULL) { - stream_parsing->stats.incoming.framing_bytes += (uint32_t)(end - cur); + if (s != NULL) { + s->stats.incoming.framing_bytes += (uint32_t)(end - cur); } if (p->byte == 4) { @@ -109,17 +108,26 @@ grpc_error *grpc_chttp2_window_update_parser_parse( } GPR_ASSERT(is_last); - if (transport_parsing->incoming_stream_id != 0) { - if (stream_parsing != NULL) { - GRPC_CHTTP2_FLOW_CREDIT_STREAM("parse", transport_parsing, - stream_parsing, outgoing_window, + if (t->incoming_stream_id != 0) { + if (s != NULL) { + bool was_zero = s->outgoing_window <= 0; + GRPC_CHTTP2_FLOW_CREDIT_STREAM("parse", t, s, outgoing_window, received_update); - grpc_chttp2_list_add_parsing_seen_stream(transport_parsing, - stream_parsing); + bool is_zero = s->outgoing_window <= 0; + if (was_zero && !is_zero) { + grpc_chttp2_become_writable(exec_ctx, t, s, false, + "stream.read_flow_control"); + } } } else { - GRPC_CHTTP2_FLOW_CREDIT_TRANSPORT("parse", transport_parsing, - outgoing_window, received_update); + bool was_zero = t->outgoing_window <= 0; + GRPC_CHTTP2_FLOW_CREDIT_TRANSPORT("parse", t, outgoing_window, + received_update); + bool is_zero = t->outgoing_window <= 0; + if (was_zero && !is_zero) { + grpc_chttp2_initiate_write(exec_ctx, t, false, + "new_global_flow_control"); + } } } diff --git a/src/core/ext/transport/chttp2/transport/frame_window_update.h b/src/core/ext/transport/chttp2/transport/frame_window_update.h index 1bcbbf9247..6e62f31872 100644 --- a/src/core/ext/transport/chttp2/transport/frame_window_update.h +++ b/src/core/ext/transport/chttp2/transport/frame_window_update.h @@ -51,8 +51,7 @@ gpr_slice grpc_chttp2_window_update_create(uint32_t id, uint32_t window_delta, grpc_error *grpc_chttp2_window_update_parser_begin_frame( grpc_chttp2_window_update_parser *parser, uint32_t length, uint8_t flags); grpc_error *grpc_chttp2_window_update_parser_parse( - grpc_exec_ctx *exec_ctx, void *parser, - grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last); + grpc_exec_ctx *exec_ctx, void *parser, grpc_chttp2_transport *t, + grpc_chttp2_stream *s, gpr_slice slice, int is_last); #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_WINDOW_UPDATE_H */ diff --git a/src/core/ext/transport/chttp2/transport/hpack_parser.c b/src/core/ext/transport/chttp2/transport/hpack_parser.c index 522455f7dc..8180f78fc0 100644 --- a/src/core/ext/transport/chttp2/transport/hpack_parser.c +++ b/src/core/ext/transport/chttp2/transport/hpack_parser.c @@ -78,69 +78,96 @@ typedef enum { a set of indirect jumps, and so not waste stack space. */ /* forward declarations for parsing states */ -static grpc_error *parse_begin(grpc_chttp2_hpack_parser *p, const uint8_t *cur, +static grpc_error *parse_begin(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); -static grpc_error *parse_error(grpc_chttp2_hpack_parser *p, const uint8_t *cur, +static grpc_error *parse_error(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end, grpc_error *error); -static grpc_error *still_parse_error(grpc_chttp2_hpack_parser *p, +static grpc_error *still_parse_error(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); -static grpc_error *parse_illegal_op(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_illegal_op(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); -static grpc_error *parse_string_prefix(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_string_prefix(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); -static grpc_error *parse_key_string(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_key_string(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); static grpc_error *parse_value_string_with_indexed_key( - grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); + grpc_exec_ctx *exec_ctx, grpc_chttp2_hpack_parser *p, const uint8_t *cur, + const uint8_t *end); static grpc_error *parse_value_string_with_literal_key( - grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); + grpc_exec_ctx *exec_ctx, grpc_chttp2_hpack_parser *p, const uint8_t *cur, + const uint8_t *end); -static grpc_error *parse_value0(grpc_chttp2_hpack_parser *p, const uint8_t *cur, +static grpc_error *parse_value0(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); -static grpc_error *parse_value1(grpc_chttp2_hpack_parser *p, const uint8_t *cur, +static grpc_error *parse_value1(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); -static grpc_error *parse_value2(grpc_chttp2_hpack_parser *p, const uint8_t *cur, +static grpc_error *parse_value2(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); -static grpc_error *parse_value3(grpc_chttp2_hpack_parser *p, const uint8_t *cur, +static grpc_error *parse_value3(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); -static grpc_error *parse_value4(grpc_chttp2_hpack_parser *p, const uint8_t *cur, +static grpc_error *parse_value4(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); -static grpc_error *parse_value5up(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_value5up(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); -static grpc_error *parse_indexed_field(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_indexed_field(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); -static grpc_error *parse_indexed_field_x(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_indexed_field_x(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); -static grpc_error *parse_lithdr_incidx(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_lithdr_incidx(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); -static grpc_error *parse_lithdr_incidx_x(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_lithdr_incidx_x(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); -static grpc_error *parse_lithdr_incidx_v(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_lithdr_incidx_v(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); -static grpc_error *parse_lithdr_notidx(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_lithdr_notidx(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); -static grpc_error *parse_lithdr_notidx_x(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_lithdr_notidx_x(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); -static grpc_error *parse_lithdr_notidx_v(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_lithdr_notidx_v(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); -static grpc_error *parse_lithdr_nvridx(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_lithdr_nvridx(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); -static grpc_error *parse_lithdr_nvridx_x(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_lithdr_nvridx_x(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); -static grpc_error *parse_lithdr_nvridx_v(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_lithdr_nvridx_v(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); -static grpc_error *parse_max_tbl_size(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_max_tbl_size(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); -static grpc_error *parse_max_tbl_size_x(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_max_tbl_size_x(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end); /* we translate the first byte of a hpack field into one of these decoding @@ -639,8 +666,8 @@ static const uint8_t inverse_base64[256] = { }; /* emission helpers */ -static grpc_error *on_hdr(grpc_chttp2_hpack_parser *p, grpc_mdelem *md, - int add_to_table) { +static grpc_error *on_hdr(grpc_exec_ctx *exec_ctx, grpc_chttp2_hpack_parser *p, + grpc_mdelem *md, int add_to_table) { if (add_to_table) { grpc_error *err = grpc_chttp2_hptbl_add(&p->table, md); if (err != GRPC_ERROR_NONE) return err; @@ -649,7 +676,7 @@ static grpc_error *on_hdr(grpc_chttp2_hpack_parser *p, grpc_mdelem *md, GRPC_MDELEM_UNREF(md); return GRPC_ERROR_CREATE("on_header callback not set"); } - p->on_header(p->on_header_user_data, md); + p->on_header(exec_ctx, p->on_header_user_data, md); return GRPC_ERROR_NONE; } @@ -661,78 +688,86 @@ static grpc_mdstr *take_string(grpc_chttp2_hpack_parser *p, } /* jump to the next state */ -static grpc_error *parse_next(grpc_chttp2_hpack_parser *p, const uint8_t *cur, +static grpc_error *parse_next(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { p->state = *p->next_state++; - return p->state(p, cur, end); + return p->state(exec_ctx, p, cur, end); } /* begin parsing a header: all functionality is encoded into lookup tables above */ -static grpc_error *parse_begin(grpc_chttp2_hpack_parser *p, const uint8_t *cur, +static grpc_error *parse_begin(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { if (cur == end) { p->state = parse_begin; return GRPC_ERROR_NONE; } - return first_byte_action[first_byte_lut[*cur]](p, cur, end); + return first_byte_action[first_byte_lut[*cur]](exec_ctx, p, cur, end); } /* stream dependency and prioritization data: we just skip it */ -static grpc_error *parse_stream_weight(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_stream_weight(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { if (cur == end) { p->state = parse_stream_weight; return GRPC_ERROR_NONE; } - return p->after_prioritization(p, cur + 1, end); + return p->after_prioritization(exec_ctx, p, cur + 1, end); } -static grpc_error *parse_stream_dep3(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_stream_dep3(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { if (cur == end) { p->state = parse_stream_dep3; return GRPC_ERROR_NONE; } - return parse_stream_weight(p, cur + 1, end); + return parse_stream_weight(exec_ctx, p, cur + 1, end); } -static grpc_error *parse_stream_dep2(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_stream_dep2(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { if (cur == end) { p->state = parse_stream_dep2; return GRPC_ERROR_NONE; } - return parse_stream_dep3(p, cur + 1, end); + return parse_stream_dep3(exec_ctx, p, cur + 1, end); } -static grpc_error *parse_stream_dep1(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_stream_dep1(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { if (cur == end) { p->state = parse_stream_dep1; return GRPC_ERROR_NONE; } - return parse_stream_dep2(p, cur + 1, end); + return parse_stream_dep2(exec_ctx, p, cur + 1, end); } -static grpc_error *parse_stream_dep0(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_stream_dep0(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { if (cur == end) { p->state = parse_stream_dep0; return GRPC_ERROR_NONE; } - return parse_stream_dep1(p, cur + 1, end); + return parse_stream_dep1(exec_ctx, p, cur + 1, end); } /* emit an indexed field; for now just logs it to console; jumps to begin the next field on completion */ -static grpc_error *finish_indexed_field(grpc_chttp2_hpack_parser *p, +static grpc_error *finish_indexed_field(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { grpc_mdelem *md = grpc_chttp2_hptbl_lookup(&p->table, p->index); @@ -743,21 +778,23 @@ static grpc_error *finish_indexed_field(grpc_chttp2_hpack_parser *p, GRPC_ERROR_INT_SIZE, (intptr_t)p->table.num_ents); } GRPC_MDELEM_REF(md); - grpc_error *err = on_hdr(p, md, 0); + grpc_error *err = on_hdr(exec_ctx, p, md, 0); if (err != GRPC_ERROR_NONE) return err; - return parse_begin(p, cur, end); + return parse_begin(exec_ctx, p, cur, end); } /* parse an indexed field with index < 127 */ -static grpc_error *parse_indexed_field(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_indexed_field(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { p->dynamic_table_update_allowed = 0; p->index = (*cur) & 0x7f; - return finish_indexed_field(p, cur + 1, end); + return finish_indexed_field(exec_ctx, p, cur + 1, end); } /* parse an indexed field with index >= 127 */ -static grpc_error *parse_indexed_field_x(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_indexed_field_x(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { static const grpc_chttp2_hpack_parser_state and_then[] = { @@ -766,49 +803,53 @@ static grpc_error *parse_indexed_field_x(grpc_chttp2_hpack_parser *p, p->next_state = and_then; p->index = 0x7f; p->parsing.value = &p->index; - return parse_value0(p, cur + 1, end); + return parse_value0(exec_ctx, p, cur + 1, end); } /* finish a literal header with incremental indexing: just log, and jump to ' begin */ -static grpc_error *finish_lithdr_incidx(grpc_chttp2_hpack_parser *p, +static grpc_error *finish_lithdr_incidx(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { grpc_mdelem *md = grpc_chttp2_hptbl_lookup(&p->table, p->index); GPR_ASSERT(md != NULL); /* handled in string parsing */ - grpc_error *err = - on_hdr(p, grpc_mdelem_from_metadata_strings(GRPC_MDSTR_REF(md->key), - take_string(p, &p->value)), - 1); - if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err); - return parse_begin(p, cur, end); + grpc_error *err = on_hdr( + exec_ctx, p, grpc_mdelem_from_metadata_strings(GRPC_MDSTR_REF(md->key), + take_string(p, &p->value)), + 1); + if (err != GRPC_ERROR_NONE) return parse_error(exec_ctx, p, cur, end, err); + return parse_begin(exec_ctx, p, cur, end); } /* finish a literal header with incremental indexing with no index */ -static grpc_error *finish_lithdr_incidx_v(grpc_chttp2_hpack_parser *p, +static grpc_error *finish_lithdr_incidx_v(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { - grpc_error *err = - on_hdr(p, grpc_mdelem_from_metadata_strings(take_string(p, &p->key), - take_string(p, &p->value)), - 1); - if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err); - return parse_begin(p, cur, end); + grpc_error *err = on_hdr( + exec_ctx, p, grpc_mdelem_from_metadata_strings(take_string(p, &p->key), + take_string(p, &p->value)), + 1); + if (err != GRPC_ERROR_NONE) return parse_error(exec_ctx, p, cur, end, err); + return parse_begin(exec_ctx, p, cur, end); } /* parse a literal header with incremental indexing; index < 63 */ -static grpc_error *parse_lithdr_incidx(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_lithdr_incidx(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { static const grpc_chttp2_hpack_parser_state and_then[] = { parse_value_string_with_indexed_key, finish_lithdr_incidx}; p->dynamic_table_update_allowed = 0; p->next_state = and_then; p->index = (*cur) & 0x3f; - return parse_string_prefix(p, cur + 1, end); + return parse_string_prefix(exec_ctx, p, cur + 1, end); } /* parse a literal header with incremental indexing; index >= 63 */ -static grpc_error *parse_lithdr_incidx_x(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_lithdr_incidx_x(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { static const grpc_chttp2_hpack_parser_state and_then[] = { @@ -818,11 +859,12 @@ static grpc_error *parse_lithdr_incidx_x(grpc_chttp2_hpack_parser *p, p->next_state = and_then; p->index = 0x3f; p->parsing.value = &p->index; - return parse_value0(p, cur + 1, end); + return parse_value0(exec_ctx, p, cur + 1, end); } /* parse a literal header with incremental indexing; index = 0 */ -static grpc_error *parse_lithdr_incidx_v(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_lithdr_incidx_v(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { static const grpc_chttp2_hpack_parser_state and_then[] = { @@ -830,48 +872,52 @@ static grpc_error *parse_lithdr_incidx_v(grpc_chttp2_hpack_parser *p, parse_value_string_with_literal_key, finish_lithdr_incidx_v}; p->dynamic_table_update_allowed = 0; p->next_state = and_then; - return parse_string_prefix(p, cur + 1, end); + return parse_string_prefix(exec_ctx, p, cur + 1, end); } /* finish a literal header without incremental indexing */ -static grpc_error *finish_lithdr_notidx(grpc_chttp2_hpack_parser *p, +static grpc_error *finish_lithdr_notidx(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { grpc_mdelem *md = grpc_chttp2_hptbl_lookup(&p->table, p->index); GPR_ASSERT(md != NULL); /* handled in string parsing */ - grpc_error *err = - on_hdr(p, grpc_mdelem_from_metadata_strings(GRPC_MDSTR_REF(md->key), - take_string(p, &p->value)), - 0); - if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err); - return parse_begin(p, cur, end); + grpc_error *err = on_hdr( + exec_ctx, p, grpc_mdelem_from_metadata_strings(GRPC_MDSTR_REF(md->key), + take_string(p, &p->value)), + 0); + if (err != GRPC_ERROR_NONE) return parse_error(exec_ctx, p, cur, end, err); + return parse_begin(exec_ctx, p, cur, end); } /* finish a literal header without incremental indexing with index = 0 */ -static grpc_error *finish_lithdr_notidx_v(grpc_chttp2_hpack_parser *p, +static grpc_error *finish_lithdr_notidx_v(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { - grpc_error *err = - on_hdr(p, grpc_mdelem_from_metadata_strings(take_string(p, &p->key), - take_string(p, &p->value)), - 0); - if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err); - return parse_begin(p, cur, end); + grpc_error *err = on_hdr( + exec_ctx, p, grpc_mdelem_from_metadata_strings(take_string(p, &p->key), + take_string(p, &p->value)), + 0); + if (err != GRPC_ERROR_NONE) return parse_error(exec_ctx, p, cur, end, err); + return parse_begin(exec_ctx, p, cur, end); } /* parse a literal header without incremental indexing; index < 15 */ -static grpc_error *parse_lithdr_notidx(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_lithdr_notidx(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { static const grpc_chttp2_hpack_parser_state and_then[] = { parse_value_string_with_indexed_key, finish_lithdr_notidx}; p->dynamic_table_update_allowed = 0; p->next_state = and_then; p->index = (*cur) & 0xf; - return parse_string_prefix(p, cur + 1, end); + return parse_string_prefix(exec_ctx, p, cur + 1, end); } /* parse a literal header without incremental indexing; index >= 15 */ -static grpc_error *parse_lithdr_notidx_x(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_lithdr_notidx_x(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { static const grpc_chttp2_hpack_parser_state and_then[] = { @@ -881,11 +927,12 @@ static grpc_error *parse_lithdr_notidx_x(grpc_chttp2_hpack_parser *p, p->next_state = and_then; p->index = 0xf; p->parsing.value = &p->index; - return parse_value0(p, cur + 1, end); + return parse_value0(exec_ctx, p, cur + 1, end); } /* parse a literal header without incremental indexing; index == 0 */ -static grpc_error *parse_lithdr_notidx_v(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_lithdr_notidx_v(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { static const grpc_chttp2_hpack_parser_state and_then[] = { @@ -893,48 +940,52 @@ static grpc_error *parse_lithdr_notidx_v(grpc_chttp2_hpack_parser *p, parse_value_string_with_literal_key, finish_lithdr_notidx_v}; p->dynamic_table_update_allowed = 0; p->next_state = and_then; - return parse_string_prefix(p, cur + 1, end); + return parse_string_prefix(exec_ctx, p, cur + 1, end); } /* finish a literal header that is never indexed */ -static grpc_error *finish_lithdr_nvridx(grpc_chttp2_hpack_parser *p, +static grpc_error *finish_lithdr_nvridx(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { grpc_mdelem *md = grpc_chttp2_hptbl_lookup(&p->table, p->index); GPR_ASSERT(md != NULL); /* handled in string parsing */ - grpc_error *err = - on_hdr(p, grpc_mdelem_from_metadata_strings(GRPC_MDSTR_REF(md->key), - take_string(p, &p->value)), - 0); - if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err); - return parse_begin(p, cur, end); + grpc_error *err = on_hdr( + exec_ctx, p, grpc_mdelem_from_metadata_strings(GRPC_MDSTR_REF(md->key), + take_string(p, &p->value)), + 0); + if (err != GRPC_ERROR_NONE) return parse_error(exec_ctx, p, cur, end, err); + return parse_begin(exec_ctx, p, cur, end); } /* finish a literal header that is never indexed with an extra value */ -static grpc_error *finish_lithdr_nvridx_v(grpc_chttp2_hpack_parser *p, +static grpc_error *finish_lithdr_nvridx_v(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { - grpc_error *err = - on_hdr(p, grpc_mdelem_from_metadata_strings(take_string(p, &p->key), - take_string(p, &p->value)), - 0); - if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err); - return parse_begin(p, cur, end); + grpc_error *err = on_hdr( + exec_ctx, p, grpc_mdelem_from_metadata_strings(take_string(p, &p->key), + take_string(p, &p->value)), + 0); + if (err != GRPC_ERROR_NONE) return parse_error(exec_ctx, p, cur, end, err); + return parse_begin(exec_ctx, p, cur, end); } /* parse a literal header that is never indexed; index < 15 */ -static grpc_error *parse_lithdr_nvridx(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_lithdr_nvridx(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { static const grpc_chttp2_hpack_parser_state and_then[] = { parse_value_string_with_indexed_key, finish_lithdr_nvridx}; p->dynamic_table_update_allowed = 0; p->next_state = and_then; p->index = (*cur) & 0xf; - return parse_string_prefix(p, cur + 1, end); + return parse_string_prefix(exec_ctx, p, cur + 1, end); } /* parse a literal header that is never indexed; index >= 15 */ -static grpc_error *parse_lithdr_nvridx_x(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_lithdr_nvridx_x(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { static const grpc_chttp2_hpack_parser_state and_then[] = { @@ -944,11 +995,12 @@ static grpc_error *parse_lithdr_nvridx_x(grpc_chttp2_hpack_parser *p, p->next_state = and_then; p->index = 0xf; p->parsing.value = &p->index; - return parse_value0(p, cur + 1, end); + return parse_value0(exec_ctx, p, cur + 1, end); } /* parse a literal header that is never indexed; index == 0 */ -static grpc_error *parse_lithdr_nvridx_v(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_lithdr_nvridx_v(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { static const grpc_chttp2_hpack_parser_state and_then[] = { @@ -956,44 +1008,47 @@ static grpc_error *parse_lithdr_nvridx_v(grpc_chttp2_hpack_parser *p, parse_value_string_with_literal_key, finish_lithdr_nvridx_v}; p->dynamic_table_update_allowed = 0; p->next_state = and_then; - return parse_string_prefix(p, cur + 1, end); + return parse_string_prefix(exec_ctx, p, cur + 1, end); } /* finish parsing a max table size change */ -static grpc_error *finish_max_tbl_size(grpc_chttp2_hpack_parser *p, +static grpc_error *finish_max_tbl_size(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { if (grpc_http_trace) { gpr_log(GPR_INFO, "MAX TABLE SIZE: %d", p->index); } grpc_error *err = grpc_chttp2_hptbl_set_current_table_size(&p->table, p->index); - if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err); - return parse_begin(p, cur, end); + if (err != GRPC_ERROR_NONE) return parse_error(exec_ctx, p, cur, end, err); + return parse_begin(exec_ctx, p, cur, end); } /* parse a max table size change, max size < 15 */ -static grpc_error *parse_max_tbl_size(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_max_tbl_size(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { if (p->dynamic_table_update_allowed == 0) { return parse_error( - p, cur, end, + exec_ctx, p, cur, end, GRPC_ERROR_CREATE( "More than two max table size changes in a single frame")); } p->dynamic_table_update_allowed--; p->index = (*cur) & 0x1f; - return finish_max_tbl_size(p, cur + 1, end); + return finish_max_tbl_size(exec_ctx, p, cur + 1, end); } /* parse a max table size change, max size >= 15 */ -static grpc_error *parse_max_tbl_size_x(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_max_tbl_size_x(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { static const grpc_chttp2_hpack_parser_state and_then[] = { finish_max_tbl_size}; if (p->dynamic_table_update_allowed == 0) { return parse_error( - p, cur, end, + exec_ctx, p, cur, end, GRPC_ERROR_CREATE( "More than two max table size changes in a single frame")); } @@ -1001,11 +1056,12 @@ static grpc_error *parse_max_tbl_size_x(grpc_chttp2_hpack_parser *p, p->next_state = and_then; p->index = 0x1f; p->parsing.value = &p->index; - return parse_value0(p, cur + 1, end); + return parse_value0(exec_ctx, p, cur + 1, end); } /* a parse error: jam the parse state into parse_error, and return error */ -static grpc_error *parse_error(grpc_chttp2_hpack_parser *p, const uint8_t *cur, +static grpc_error *parse_error(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end, grpc_error *err) { GPR_ASSERT(err != GRPC_ERROR_NONE); if (p->last_error == GRPC_ERROR_NONE) { @@ -1015,24 +1071,27 @@ static grpc_error *parse_error(grpc_chttp2_hpack_parser *p, const uint8_t *cur, return err; } -static grpc_error *still_parse_error(grpc_chttp2_hpack_parser *p, +static grpc_error *still_parse_error(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { return GRPC_ERROR_REF(p->last_error); } -static grpc_error *parse_illegal_op(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_illegal_op(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { GPR_ASSERT(cur != end); char *msg; gpr_asprintf(&msg, "Illegal hpack op code %d", *cur); grpc_error *err = GRPC_ERROR_CREATE(msg); gpr_free(msg); - return parse_error(p, cur, end, err); + return parse_error(exec_ctx, p, cur, end, err); } /* parse the 1st byte of a varint into p->parsing.value no overflow is possible */ -static grpc_error *parse_value0(grpc_chttp2_hpack_parser *p, const uint8_t *cur, +static grpc_error *parse_value0(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { if (cur == end) { p->state = parse_value0; @@ -1042,15 +1101,16 @@ static grpc_error *parse_value0(grpc_chttp2_hpack_parser *p, const uint8_t *cur, *p->parsing.value += (*cur) & 0x7f; if ((*cur) & 0x80) { - return parse_value1(p, cur + 1, end); + return parse_value1(exec_ctx, p, cur + 1, end); } else { - return parse_next(p, cur + 1, end); + return parse_next(exec_ctx, p, cur + 1, end); } } /* parse the 2nd byte of a varint into p->parsing.value no overflow is possible */ -static grpc_error *parse_value1(grpc_chttp2_hpack_parser *p, const uint8_t *cur, +static grpc_error *parse_value1(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { if (cur == end) { p->state = parse_value1; @@ -1060,15 +1120,16 @@ static grpc_error *parse_value1(grpc_chttp2_hpack_parser *p, const uint8_t *cur, *p->parsing.value += (((uint32_t)*cur) & 0x7f) << 7; if ((*cur) & 0x80) { - return parse_value2(p, cur + 1, end); + return parse_value2(exec_ctx, p, cur + 1, end); } else { - return parse_next(p, cur + 1, end); + return parse_next(exec_ctx, p, cur + 1, end); } } /* parse the 3rd byte of a varint into p->parsing.value no overflow is possible */ -static grpc_error *parse_value2(grpc_chttp2_hpack_parser *p, const uint8_t *cur, +static grpc_error *parse_value2(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { if (cur == end) { p->state = parse_value2; @@ -1078,15 +1139,16 @@ static grpc_error *parse_value2(grpc_chttp2_hpack_parser *p, const uint8_t *cur, *p->parsing.value += (((uint32_t)*cur) & 0x7f) << 14; if ((*cur) & 0x80) { - return parse_value3(p, cur + 1, end); + return parse_value3(exec_ctx, p, cur + 1, end); } else { - return parse_next(p, cur + 1, end); + return parse_next(exec_ctx, p, cur + 1, end); } } /* parse the 4th byte of a varint into p->parsing.value no overflow is possible */ -static grpc_error *parse_value3(grpc_chttp2_hpack_parser *p, const uint8_t *cur, +static grpc_error *parse_value3(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { if (cur == end) { p->state = parse_value3; @@ -1096,15 +1158,16 @@ static grpc_error *parse_value3(grpc_chttp2_hpack_parser *p, const uint8_t *cur, *p->parsing.value += (((uint32_t)*cur) & 0x7f) << 21; if ((*cur) & 0x80) { - return parse_value4(p, cur + 1, end); + return parse_value4(exec_ctx, p, cur + 1, end); } else { - return parse_next(p, cur + 1, end); + return parse_next(exec_ctx, p, cur + 1, end); } } /* parse the 5th byte of a varint into p->parsing.value depending on the byte, we may overflow, and care must be taken */ -static grpc_error *parse_value4(grpc_chttp2_hpack_parser *p, const uint8_t *cur, +static grpc_error *parse_value4(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { uint8_t c; uint32_t cur_value; @@ -1130,9 +1193,9 @@ static grpc_error *parse_value4(grpc_chttp2_hpack_parser *p, const uint8_t *cur, *p->parsing.value = cur_value + add_value; if ((*cur) & 0x80) { - return parse_value5up(p, cur + 1, end); + return parse_value5up(exec_ctx, p, cur + 1, end); } else { - return parse_next(p, cur + 1, end); + return parse_next(exec_ctx, p, cur + 1, end); } error: @@ -1142,13 +1205,14 @@ error: *p->parsing.value, *cur); grpc_error *err = GRPC_ERROR_CREATE(msg); gpr_free(msg); - return parse_error(p, cur, end, err); + return parse_error(exec_ctx, p, cur, end, err); } /* parse any trailing bytes in a varint: it's possible to append an arbitrary number of 0x80's and not affect the value - a zero will terminate - and anything else will overflow */ -static grpc_error *parse_value5up(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_value5up(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { while (cur != end && *cur == 0x80) { ++cur; @@ -1160,7 +1224,7 @@ static grpc_error *parse_value5up(grpc_chttp2_hpack_parser *p, } if (*cur == 0) { - return parse_next(p, cur + 1, end); + return parse_next(exec_ctx, p, cur + 1, end); } char *msg; @@ -1170,11 +1234,12 @@ static grpc_error *parse_value5up(grpc_chttp2_hpack_parser *p, *p->parsing.value, *cur); grpc_error *err = GRPC_ERROR_CREATE(msg); gpr_free(msg); - return parse_error(p, cur, end, err); + return parse_error(exec_ctx, p, cur, end, err); } /* parse a string prefix */ -static grpc_error *parse_string_prefix(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_string_prefix(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { if (cur == end) { p->state = parse_string_prefix; @@ -1185,9 +1250,9 @@ static grpc_error *parse_string_prefix(grpc_chttp2_hpack_parser *p, p->huff = (*cur) >> 7; if (p->strlen == 0x7f) { p->parsing.value = &p->strlen; - return parse_value0(p, cur + 1, end); + return parse_value0(exec_ctx, p, cur + 1, end); } else { - return parse_next(p, cur + 1, end); + return parse_next(exec_ctx, p, cur + 1, end); } } @@ -1205,7 +1270,8 @@ static void append_bytes(grpc_chttp2_hpack_parser_string *str, str->length += (uint32_t)length; } -static grpc_error *append_string(grpc_chttp2_hpack_parser *p, +static grpc_error *append_string(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { grpc_chttp2_hpack_parser_string *str = p->parsing.str; uint32_t bits; @@ -1223,7 +1289,7 @@ static grpc_error *append_string(grpc_chttp2_hpack_parser *p, bits = inverse_base64[*cur]; ++cur; if (bits == 255) - return parse_error(p, cur, end, + return parse_error(exec_ctx, p, cur, end, GRPC_ERROR_CREATE("Illegal base64 character")); else if (bits == 64) goto b64_byte0; @@ -1238,7 +1304,7 @@ static grpc_error *append_string(grpc_chttp2_hpack_parser *p, bits = inverse_base64[*cur]; ++cur; if (bits == 255) - return parse_error(p, cur, end, + return parse_error(exec_ctx, p, cur, end, GRPC_ERROR_CREATE("Illegal base64 character")); else if (bits == 64) goto b64_byte1; @@ -1253,7 +1319,7 @@ static grpc_error *append_string(grpc_chttp2_hpack_parser *p, bits = inverse_base64[*cur]; ++cur; if (bits == 255) - return parse_error(p, cur, end, + return parse_error(exec_ctx, p, cur, end, GRPC_ERROR_CREATE("Illegal base64 character")); else if (bits == 64) goto b64_byte2; @@ -1268,7 +1334,7 @@ static grpc_error *append_string(grpc_chttp2_hpack_parser *p, bits = inverse_base64[*cur]; ++cur; if (bits == 255) - return parse_error(p, cur, end, + return parse_error(exec_ctx, p, cur, end, GRPC_ERROR_CREATE("Illegal base64 character")); else if (bits == 64) goto b64_byte3; @@ -1281,11 +1347,12 @@ static grpc_error *append_string(grpc_chttp2_hpack_parser *p, goto b64_byte0; } GPR_UNREACHABLE_CODE(return parse_error( - p, cur, end, GRPC_ERROR_CREATE("Should never reach here"))); + exec_ctx, p, cur, end, GRPC_ERROR_CREATE("Should never reach here"))); } /* append a null terminator to a string */ -static grpc_error *finish_str(grpc_chttp2_hpack_parser *p, const uint8_t *cur, +static grpc_error *finish_str(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { uint8_t terminator = 0; uint8_t decoded[2]; @@ -1298,7 +1365,7 @@ static grpc_error *finish_str(grpc_chttp2_hpack_parser *p, const uint8_t *cur, break; case B64_BYTE1: return parse_error( - p, cur, end, + exec_ctx, p, cur, end, GRPC_ERROR_CREATE("illegal base64 encoding")); /* illegal encoding */ case B64_BYTE2: bits = p->base64_buffer; @@ -1308,7 +1375,7 @@ static grpc_error *finish_str(grpc_chttp2_hpack_parser *p, const uint8_t *cur, bits & 0xffff); grpc_error *err = GRPC_ERROR_CREATE(msg); gpr_free(msg); - return parse_error(p, cur, end, err); + return parse_error(exec_ctx, p, cur, end, err); } decoded[0] = (uint8_t)(bits >> 16); append_bytes(str, decoded, 1); @@ -1321,7 +1388,7 @@ static grpc_error *finish_str(grpc_chttp2_hpack_parser *p, const uint8_t *cur, bits & 0xff); grpc_error *err = GRPC_ERROR_CREATE(msg); gpr_free(msg); - return parse_error(p, cur, end, err); + return parse_error(exec_ctx, p, cur, end, err); } decoded[0] = (uint8_t)(bits >> 16); decoded[1] = (uint8_t)(bits >> 8); @@ -1334,13 +1401,14 @@ static grpc_error *finish_str(grpc_chttp2_hpack_parser *p, const uint8_t *cur, } /* decode a nibble from a huffman encoded stream */ -static grpc_error *huff_nibble(grpc_chttp2_hpack_parser *p, uint8_t nibble) { +static grpc_error *huff_nibble(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, uint8_t nibble) { int16_t emit = emit_sub_tbl[16 * emit_tbl[p->huff_state] + nibble]; int16_t next = next_sub_tbl[16 * next_tbl[p->huff_state] + nibble]; if (emit != -1) { if (emit >= 0 && emit < 256) { uint8_t c = (uint8_t)emit; - grpc_error *err = append_string(p, &c, (&c) + 1); + grpc_error *err = append_string(exec_ctx, p, &c, (&c) + 1); if (err != GRPC_ERROR_NONE) return err; } else { assert(emit == 256); @@ -1351,42 +1419,45 @@ static grpc_error *huff_nibble(grpc_chttp2_hpack_parser *p, uint8_t nibble) { } /* decode full bytes from a huffman encoded stream */ -static grpc_error *add_huff_bytes(grpc_chttp2_hpack_parser *p, +static grpc_error *add_huff_bytes(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { for (; cur != end; ++cur) { - grpc_error *err = huff_nibble(p, *cur >> 4); - if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err); - err = huff_nibble(p, *cur & 0xf); - if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err); + grpc_error *err = huff_nibble(exec_ctx, p, *cur >> 4); + if (err != GRPC_ERROR_NONE) return parse_error(exec_ctx, p, cur, end, err); + err = huff_nibble(exec_ctx, p, *cur & 0xf); + if (err != GRPC_ERROR_NONE) return parse_error(exec_ctx, p, cur, end, err); } return GRPC_ERROR_NONE; } /* decode some string bytes based on the current decoding mode (huffman or not) */ -static grpc_error *add_str_bytes(grpc_chttp2_hpack_parser *p, +static grpc_error *add_str_bytes(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { if (p->huff) { - return add_huff_bytes(p, cur, end); + return add_huff_bytes(exec_ctx, p, cur, end); } else { - return append_string(p, cur, end); + return append_string(exec_ctx, p, cur, end); } } /* parse a string - tries to do large chunks at a time */ -static grpc_error *parse_string(grpc_chttp2_hpack_parser *p, const uint8_t *cur, +static grpc_error *parse_string(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { size_t remaining = p->strlen - p->strgot; size_t given = (size_t)(end - cur); if (remaining <= given) { - grpc_error *err = add_str_bytes(p, cur, cur + remaining); - if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err); - err = finish_str(p, cur + remaining, end); - if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err); - return parse_next(p, cur + remaining, end); + grpc_error *err = add_str_bytes(exec_ctx, p, cur, cur + remaining); + if (err != GRPC_ERROR_NONE) return parse_error(exec_ctx, p, cur, end, err); + err = finish_str(exec_ctx, p, cur + remaining, end); + if (err != GRPC_ERROR_NONE) return parse_error(exec_ctx, p, cur, end, err); + return parse_next(exec_ctx, p, cur + remaining, end); } else { - grpc_error *err = add_str_bytes(p, cur, cur + given); - if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err); + grpc_error *err = add_str_bytes(exec_ctx, p, cur, cur + given); + if (err != GRPC_ERROR_NONE) return parse_error(exec_ctx, p, cur, end, err); GPR_ASSERT(given <= UINT32_MAX - p->strgot); p->strgot += (uint32_t)given; p->state = parse_string; @@ -1395,7 +1466,8 @@ static grpc_error *parse_string(grpc_chttp2_hpack_parser *p, const uint8_t *cur, } /* begin parsing a string - performs setup, calls parse_string */ -static grpc_error *begin_parse_string(grpc_chttp2_hpack_parser *p, +static grpc_error *begin_parse_string(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end, uint8_t binary, grpc_chttp2_hpack_parser_string *str) { @@ -1404,13 +1476,14 @@ static grpc_error *begin_parse_string(grpc_chttp2_hpack_parser *p, p->parsing.str = str; p->huff_state = 0; p->binary = binary; - return parse_string(p, cur, end); + return parse_string(exec_ctx, p, cur, end); } /* parse the key string */ -static grpc_error *parse_key_string(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_key_string(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { - return begin_parse_string(p, cur, end, NOT_BINARY, &p->key); + return begin_parse_string(exec_ctx, p, cur, end, NOT_BINARY, &p->key); } /* check if a key represents a binary header or not */ @@ -1435,24 +1508,27 @@ static grpc_error *is_binary_indexed_header(grpc_chttp2_hpack_parser *p, } /* parse the value string */ -static grpc_error *parse_value_string(grpc_chttp2_hpack_parser *p, +static grpc_error *parse_value_string(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end, bool is_binary) { - return begin_parse_string(p, cur, end, is_binary ? B64_BYTE0 : NOT_BINARY, - &p->value); + return begin_parse_string(exec_ctx, p, cur, end, + is_binary ? B64_BYTE0 : NOT_BINARY, &p->value); } static grpc_error *parse_value_string_with_indexed_key( - grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { + grpc_exec_ctx *exec_ctx, grpc_chttp2_hpack_parser *p, const uint8_t *cur, + const uint8_t *end) { bool is_binary = false; grpc_error *err = is_binary_indexed_header(p, &is_binary); - if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err); - return parse_value_string(p, cur, end, is_binary); + if (err != GRPC_ERROR_NONE) return parse_error(exec_ctx, p, cur, end, err); + return parse_value_string(exec_ctx, p, cur, end, is_binary); } static grpc_error *parse_value_string_with_literal_key( - grpc_chttp2_hpack_parser *p, const uint8_t *cur, const uint8_t *end) { - return parse_value_string(p, cur, end, is_binary_literal_header(p)); + grpc_exec_ctx *exec_ctx, grpc_chttp2_hpack_parser *p, const uint8_t *cur, + const uint8_t *end) { + return parse_value_string(exec_ctx, p, cur, end, is_binary_literal_header(p)); } /* PUBLIC INTERFACE */ @@ -1484,27 +1560,36 @@ void grpc_chttp2_hpack_parser_destroy(grpc_chttp2_hpack_parser *p) { gpr_free(p->value.str); } -grpc_error *grpc_chttp2_hpack_parser_parse(grpc_chttp2_hpack_parser *p, +grpc_error *grpc_chttp2_hpack_parser_parse(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *beg, const uint8_t *end) { /* TODO(ctiller): limit the distance of end from beg, and perform multiple steps in the event of a large chunk of data to limit stack space usage when no tail call optimization is available */ - return p->state(p, beg, end); + return p->state(exec_ctx, p, beg, end); } -grpc_error *grpc_chttp2_header_parser_parse( - grpc_exec_ctx *exec_ctx, void *hpack_parser, - grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last) { +typedef void (*maybe_complete_func_type)(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s); +static const maybe_complete_func_type maybe_complete_funcs[] = { + grpc_chttp2_maybe_complete_recv_initial_metadata, + grpc_chttp2_maybe_complete_recv_trailing_metadata}; + +grpc_error *grpc_chttp2_header_parser_parse(grpc_exec_ctx *exec_ctx, + void *hpack_parser, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s, + gpr_slice slice, int is_last) { grpc_chttp2_hpack_parser *parser = hpack_parser; GPR_TIMER_BEGIN("grpc_chttp2_hpack_parser_parse", 0); - if (stream_parsing != NULL) { - stream_parsing->stats.incoming.header_bytes += GPR_SLICE_LENGTH(slice); + if (s != NULL) { + s->stats.incoming.header_bytes += GPR_SLICE_LENGTH(slice); } grpc_error *error = grpc_chttp2_hpack_parser_parse( - parser, GPR_SLICE_START_PTR(slice), GPR_SLICE_END_PTR(slice)); + exec_ctx, parser, GPR_SLICE_START_PTR(slice), GPR_SLICE_END_PTR(slice)); if (error != GRPC_ERROR_NONE) { GPR_TIMER_END("grpc_chttp2_hpack_parser_parse", 0); return error; @@ -1517,20 +1602,19 @@ grpc_error *grpc_chttp2_header_parser_parse( } /* need to check for null stream: this can occur if we receive an invalid stream id on a header */ - if (stream_parsing != NULL) { + if (s != NULL) { if (parser->is_boundary) { - if (stream_parsing->header_frames_received == - GPR_ARRAY_SIZE(stream_parsing->got_metadata_on_parse)) { + if (s->header_frames_received == GPR_ARRAY_SIZE(s->metadata_buffer)) { return GRPC_ERROR_CREATE("Too many trailer frames"); } - stream_parsing - ->got_metadata_on_parse[stream_parsing->header_frames_received] = 1; - stream_parsing->header_frames_received++; - grpc_chttp2_list_add_parsing_seen_stream(transport_parsing, - stream_parsing); + s->published_metadata[s->header_frames_received] = + GRPC_METADATA_PUBLISHED_FROM_WIRE; + maybe_complete_funcs[s->header_frames_received](exec_ctx, t, s); + s->header_frames_received++; } if (parser->is_eof) { - stream_parsing->received_close = 1; + grpc_chttp2_mark_stream_closed(exec_ctx, t, s, true, false, + GRPC_ERROR_NONE); } } parser->on_header = NULL; diff --git a/src/core/ext/transport/chttp2/transport/hpack_parser.h b/src/core/ext/transport/chttp2/transport/hpack_parser.h index 78eb38db5e..0290c78d5a 100644 --- a/src/core/ext/transport/chttp2/transport/hpack_parser.h +++ b/src/core/ext/transport/chttp2/transport/hpack_parser.h @@ -45,7 +45,8 @@ typedef struct grpc_chttp2_hpack_parser grpc_chttp2_hpack_parser; typedef grpc_error *(*grpc_chttp2_hpack_parser_state)( - grpc_chttp2_hpack_parser *p, const uint8_t *beg, const uint8_t *end); + grpc_exec_ctx *exec_ctx, grpc_chttp2_hpack_parser *p, const uint8_t *beg, + const uint8_t *end); typedef struct { char *str; @@ -55,7 +56,7 @@ typedef struct { struct grpc_chttp2_hpack_parser { /* user specified callback for each header output */ - void (*on_header)(void *user_data, grpc_mdelem *md); + void (*on_header)(grpc_exec_ctx *exec_ctx, void *user_data, grpc_mdelem *md); void *on_header_user_data; grpc_error *last_error; @@ -104,15 +105,17 @@ void grpc_chttp2_hpack_parser_destroy(grpc_chttp2_hpack_parser *p); void grpc_chttp2_hpack_parser_set_has_priority(grpc_chttp2_hpack_parser *p); /* returns 1 on success, 0 on error */ -grpc_error *grpc_chttp2_hpack_parser_parse(grpc_chttp2_hpack_parser *p, +grpc_error *grpc_chttp2_hpack_parser_parse(grpc_exec_ctx *exec_ctx, + grpc_chttp2_hpack_parser *p, const uint8_t *beg, const uint8_t *end); /* wraps grpc_chttp2_hpack_parser_parse to provide a frame level parser for the transport */ -grpc_error *grpc_chttp2_header_parser_parse( - grpc_exec_ctx *exec_ctx, void *hpack_parser, - grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last); +grpc_error *grpc_chttp2_header_parser_parse(grpc_exec_ctx *exec_ctx, + void *hpack_parser, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s, + gpr_slice slice, int is_last); #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_HPACK_PARSER_H */ diff --git a/src/core/ext/transport/chttp2/transport/internal.h b/src/core/ext/transport/chttp2/transport/internal.h index d67c014e54..6b3e2edd54 100644 --- a/src/core/ext/transport/chttp2/transport/internal.h +++ b/src/core/ext/transport/chttp2/transport/internal.h @@ -48,35 +48,30 @@ #include "src/core/ext/transport/chttp2/transport/hpack_parser.h" #include "src/core/ext/transport/chttp2/transport/incoming_metadata.h" #include "src/core/ext/transport/chttp2/transport/stream_map.h" +#include "src/core/lib/iomgr/combiner.h" #include "src/core/lib/iomgr/endpoint.h" #include "src/core/lib/transport/connectivity_state.h" #include "src/core/lib/transport/transport_impl.h" -typedef struct grpc_chttp2_transport grpc_chttp2_transport; -typedef struct grpc_chttp2_stream grpc_chttp2_stream; - /* streams are kept in various linked lists depending on what things need to happen to them... this enum labels each list */ typedef enum { - GRPC_CHTTP2_LIST_ALL_STREAMS, - GRPC_CHTTP2_LIST_CHECK_READ_OPS, - GRPC_CHTTP2_LIST_UNANNOUNCED_INCOMING_WINDOW_AVAILABLE, GRPC_CHTTP2_LIST_WRITABLE, GRPC_CHTTP2_LIST_WRITING, - GRPC_CHTTP2_LIST_WRITTEN, - GRPC_CHTTP2_LIST_PARSING_SEEN, - GRPC_CHTTP2_LIST_CLOSED_WAITING_FOR_PARSING, - GRPC_CHTTP2_LIST_CLOSED_WAITING_FOR_WRITING, GRPC_CHTTP2_LIST_STALLED_BY_TRANSPORT, - /* streams waiting for the outgoing window in the writing path, they will be - * merged to the stalled list or writable list under transport lock. */ - GRPC_CHTTP2_LIST_WRITING_STALLED_BY_TRANSPORT, /** streams that are waiting to start because there are too many concurrent streams on the connection */ GRPC_CHTTP2_LIST_WAITING_FOR_CONCURRENCY, STREAM_LIST_COUNT /* must be last */ } grpc_chttp2_stream_list_id; +typedef enum { + GRPC_CHTTP2_WRITE_STATE_IDLE, + GRPC_CHTTP2_WRITE_STATE_WRITING, + GRPC_CHTTP2_WRITE_STATE_WRITING_WITH_MORE, + GRPC_CHTTP2_WRITE_STATE_WRITING_WITH_MORE_AND_COVERED_BY_POLLER, +} grpc_chttp2_write_state; + /* deframer state for the overall http2 stream of bytes */ typedef enum { /* prefix: one entry per http2 connection prefix byte */ @@ -151,6 +146,12 @@ typedef struct grpc_chttp2_outstanding_ping { struct grpc_chttp2_outstanding_ping *prev; } grpc_chttp2_outstanding_ping; +typedef struct grpc_chttp2_write_cb { + size_t call_at_byte; + grpc_closure *closure; + struct grpc_chttp2_write_cb *next; +} grpc_chttp2_write_cb; + /* forward declared in frame_data.h */ struct grpc_chttp2_incoming_byte_stream { grpc_byte_stream base; @@ -160,18 +161,86 @@ struct grpc_chttp2_incoming_byte_stream { grpc_chttp2_transport *transport; grpc_chttp2_stream *stream; - int is_tail; + bool is_tail; + + gpr_mu slice_mu; // protects slices, on_next gpr_slice_buffer slices; grpc_closure *on_next; gpr_slice *next; + uint32_t remaining_bytes; + + struct { + grpc_closure closure; + gpr_slice *slice; + size_t max_size_hint; + grpc_closure *on_complete; + } next_action; + grpc_closure destroy_action; + grpc_closure finished_action; }; -typedef struct { +struct grpc_chttp2_transport { + grpc_transport base; /* must be first */ + gpr_refcount refs; + grpc_endpoint *ep; + char *peer_string; + + grpc_combiner *combiner; + + /** write execution state of the transport */ + grpc_chttp2_write_state write_state; + + /** is the transport destroying itself? */ + uint8_t destroying; + /** has the upper layer closed the transport? */ + uint8_t closed; + + /** is there a read request to the endpoint outstanding? */ + uint8_t endpoint_reading; + + /** various lists of streams */ + grpc_chttp2_stream_list lists[STREAM_LIST_COUNT]; + + /** maps stream id to grpc_chttp2_stream objects */ + grpc_chttp2_stream_map stream_map; + + grpc_closure write_action_begin_locked; + grpc_closure write_action; + grpc_closure write_action_end; + grpc_closure write_action_end_locked; + + grpc_closure read_action_begin; + grpc_closure read_action_locked; + + /** incoming read bytes */ + gpr_slice_buffer read_buffer; + + /** address to place a newly accepted stream - set and unset by + grpc_chttp2_parsing_accept_stream; used by init_stream to + publish the accepted server stream */ + grpc_chttp2_stream **accepting_stream; + + struct { + /* accept stream callback */ + void (*accept_stream)(grpc_exec_ctx *exec_ctx, void *user_data, + grpc_transport *transport, const void *server_data); + void *accept_stream_user_data; + + /** connectivity tracking */ + grpc_connectivity_state_tracker state_tracker; + } channel_callback; + + /** data to write now */ + gpr_slice_buffer outbuf; + /** hpack encoding */ + grpc_chttp2_hpack_compressor hpack_compressor; + int64_t outgoing_window; + /** is this a client? */ + uint8_t is_client; + /** data to write next write */ gpr_slice_buffer qbuf; - /** window available for us to send to peer */ - int64_t outgoing_window; /** window available to announce to peer */ int64_t announce_incoming_window; /** how much window would we like to have for incoming_window */ @@ -182,8 +251,6 @@ typedef struct { /** have we sent a goaway */ uint8_t sent_goaway; - /** is this transport a client? */ - uint8_t is_client; /** are the local settings dirty and need to be sent? */ uint8_t dirtied_local_settings; /** have local settings been sent? */ @@ -208,41 +275,6 @@ typedef struct { /** next payload for an outgoing ping */ uint64_t ping_counter; - /** concurrent stream count: updated when not parsing, - so this is a strict over-estimation on the client */ - uint32_t concurrent_stream_count; -} grpc_chttp2_transport_global; - -typedef struct { - /** data to write now */ - gpr_slice_buffer outbuf; - /** hpack encoding */ - grpc_chttp2_hpack_compressor hpack_compressor; - int64_t outgoing_window; - /** is this a client? */ - uint8_t is_client; - /** callback for when writing is done */ - grpc_closure done_cb; - /** maximum frame size */ - uint32_t max_frame_size; -} grpc_chttp2_transport_writing; - -struct grpc_chttp2_transport_parsing { - /** is this transport a client? (boolean) */ - uint8_t is_client; - - /** were settings updated? */ - uint8_t settings_updated; - /** was a settings ack received? */ - uint8_t settings_ack_received; - /** was a goaway frame received? */ - uint8_t goaway_received; - - /** initial window change */ - int64_t initial_window_update; - - /** data to write later - after parsing */ - gpr_slice_buffer qbuf; /** parser for headers */ grpc_chttp2_hpack_parser hpack_parser; /** simple one shot parsers */ @@ -255,13 +287,12 @@ struct grpc_chttp2_transport_parsing { /** parser for goaway frames */ grpc_chttp2_goaway_parser goaway_parser; + /** initial window change */ + int64_t initial_window_update; + /** window available for peer to send to us */ int64_t incoming_window; - /** next stream id available at the time of beginning parsing */ - uint32_t next_stream_id; - uint32_t last_incoming_stream_id; - /* deframing */ grpc_chttp2_deframe_transport_state deframe_state; uint8_t incoming_frame_type; @@ -272,142 +303,38 @@ struct grpc_chttp2_transport_parsing { uint32_t incoming_frame_size; uint32_t incoming_stream_id; - /* current max frame size */ - uint32_t max_frame_size; - /* active parser */ void *parser_data; - grpc_chttp2_stream_parsing *incoming_stream; + grpc_chttp2_stream *incoming_stream; grpc_error *(*parser)(grpc_exec_ctx *exec_ctx, void *parser_user_data, - grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_parsing *stream_parsing, + grpc_chttp2_transport *t, grpc_chttp2_stream *s, gpr_slice slice, int is_last); - /* received settings */ - uint32_t settings[GRPC_CHTTP2_NUM_SETTINGS]; - /* last settings that were sent */ - uint32_t last_sent_settings[GRPC_CHTTP2_NUM_SETTINGS]; - /* goaway data */ grpc_status_code goaway_error; uint32_t goaway_last_stream_index; gpr_slice goaway_text; - int64_t outgoing_window; + grpc_chttp2_write_cb *write_cb_pool; }; -typedef void (*grpc_chttp2_locked_action)(grpc_exec_ctx *ctx, - grpc_chttp2_transport *t, - grpc_chttp2_stream *s, void *arg); - -typedef struct grpc_chttp2_executor_action_header { - grpc_chttp2_stream *stream; - grpc_chttp2_locked_action action; - struct grpc_chttp2_executor_action_header *next; - void *arg; -} grpc_chttp2_executor_action_header; - typedef enum { - /** no writing activity */ - GRPC_CHTTP2_WRITING_INACTIVE, - /** write has been requested, but not scheduled yet */ - GRPC_CHTTP2_WRITE_REQUESTED_WITH_POLLER, - GRPC_CHTTP2_WRITE_REQUESTED_NO_POLLER, - /** write has been requested and scheduled against the workqueue */ - GRPC_CHTTP2_WRITE_SCHEDULED, - /** write has been initiated after being reaped from the workqueue */ - GRPC_CHTTP2_WRITING, - /** write has been initiated, AND another write needs to be started once it's - done */ - GRPC_CHTTP2_WRITING_STALE_WITH_POLLER, - GRPC_CHTTP2_WRITING_STALE_NO_POLLER, -} grpc_chttp2_write_state; - -struct grpc_chttp2_transport { - grpc_transport base; /* must be first */ - gpr_refcount refs; - grpc_endpoint *ep; - char *peer_string; - - /** when this drops to zero it's safe to shutdown the endpoint */ - gpr_refcount shutdown_ep_refs; - - struct { - gpr_mu mu; - - /** is a thread currently in the global lock */ - bool global_active; - /** is a thread currently parsing */ - bool parsing_active; - /** write execution state of the transport */ - grpc_chttp2_write_state write_state; - - grpc_chttp2_executor_action_header *pending_actions_head; - grpc_chttp2_executor_action_header *pending_actions_tail; - } executor; - - /** is the transport destroying itself? */ - uint8_t destroying; - /** has the upper layer closed the transport? */ - uint8_t closed; - - /** is there a read request to the endpoint outstanding? */ - uint8_t endpoint_reading; - - /** various lists of streams */ - grpc_chttp2_stream_list lists[STREAM_LIST_COUNT]; - - /** global state for reading/writing */ - grpc_chttp2_transport_global global; - /** state only accessible by the chain of execution that - set writing_state >= GRPC_WRITING, and only by the writing closure - chain. */ - grpc_chttp2_transport_writing writing; - /** state only accessible by the chain of execution that - set parsing_active=1 */ - grpc_chttp2_transport_parsing parsing; - - /** maps stream id to grpc_chttp2_stream objects; - owned by the parsing thread when parsing */ - grpc_chttp2_stream_map parsing_stream_map; - - /** streams created by the client (possibly during parsing); - merged with parsing_stream_map during unlock when no - parsing is occurring */ - grpc_chttp2_stream_map new_stream_map; - - /** closure to execute writing */ - grpc_closure writing_action; - /** closure to start reading from the endpoint */ - grpc_closure reading_action; - /** closure to actually do parsing */ - grpc_closure parsing_action; - /** closure to initiate writing */ - grpc_closure initiate_writing; - - /** incoming read bytes */ - gpr_slice_buffer read_buffer; - - /** address to place a newly accepted stream - set and unset by - grpc_chttp2_parsing_accept_stream; used by init_stream to - publish the accepted server stream */ - grpc_chttp2_stream **accepting_stream; + GRPC_METADATA_NOT_PUBLISHED, + GRPC_METADATA_SYNTHESIZED_FROM_FAKE, + GRPC_METADATA_PUBLISHED_FROM_WIRE, + GPRC_METADATA_PUBLISHED_AT_CLOSE +} grpc_published_metadata_method; - struct { - /* accept stream callback */ - void (*accept_stream)(grpc_exec_ctx *exec_ctx, void *user_data, - grpc_transport *transport, const void *server_data); - void *accept_stream_user_data; +struct grpc_chttp2_stream { + grpc_chttp2_transport *t; + grpc_stream_refcount *refcount; - /** connectivity tracking */ - grpc_connectivity_state_tracker state_tracker; - } channel_callback; + grpc_closure destroy_stream; + void *destroy_stream_arg; - /** Transport op to be applied post-parsing */ - grpc_transport_op *post_parsing_op; -}; + grpc_chttp2_stream_link links[STREAM_LIST_COUNT]; + uint8_t included[STREAM_LIST_COUNT]; -typedef struct { /** HTTP2 stream id for this stream, or zero if one has not been assigned */ uint32_t id; @@ -417,20 +344,21 @@ typedef struct { As the upper layer offers more bytes, this value increases. As bytes are read, this value decreases. */ uint32_t max_recv_bytes; - /** The number of bytes the upper layer has offered to read but we have - not yet announced to HTTP2 flow control. - As the upper layers offer to read more bytes, this value increases. - As we advertise incoming flow control window, this value decreases. */ - uint32_t unannounced_incoming_window_for_parse; - uint32_t unannounced_incoming_window_for_writing; /** things the upper layers would like to send */ grpc_metadata_batch *send_initial_metadata; grpc_closure *send_initial_metadata_finished; - grpc_byte_stream *send_message; - grpc_closure *send_message_finished; grpc_metadata_batch *send_trailing_metadata; grpc_closure *send_trailing_metadata_finished; + grpc_byte_stream *fetching_send_message; + uint32_t fetched_send_message_length; + gpr_slice fetching_slice; + int64_t fetching_slice_end_offset; + bool complete_fetch_covered_by_poller; + grpc_closure complete_fetch; + grpc_closure complete_fetch_locked; + grpc_closure *fetching_send_message_finished; + grpc_metadata_batch *recv_initial_metadata; grpc_closure *recv_initial_metadata_ready; grpc_byte_stream **recv_message; @@ -450,90 +378,44 @@ typedef struct { bool read_closed; /** Are all published incoming byte streams closed. */ bool all_incoming_byte_streams_finished; - /** Is this stream in the stream map. */ - bool in_stream_map; /** Has this stream seen an error. If true, then pending incoming frames can be thrown away. */ bool seen_error; - bool exceeded_metadata_size; /** the error that resulted in this stream being read-closed */ grpc_error *read_closed_error; /** the error that resulted in this stream being write-closed */ grpc_error *write_closed_error; - bool published_initial_metadata; - bool published_trailing_metadata; + grpc_published_metadata_method published_metadata[2]; bool final_metadata_requested; - grpc_chttp2_incoming_metadata_buffer received_initial_metadata; - grpc_chttp2_incoming_metadata_buffer received_trailing_metadata; + grpc_chttp2_incoming_metadata_buffer metadata_buffer[2]; grpc_chttp2_incoming_frame_queue incoming_frames; gpr_timespec deadline; -} grpc_chttp2_stream_global; - -typedef struct { - /** HTTP2 stream id for this stream, or zero if one has not been assigned */ - uint32_t id; - uint8_t fetching; - bool sent_initial_metadata; - uint8_t sent_message; - uint8_t sent_trailing_metadata; - uint8_t read_closed; - /** send this initial metadata */ - grpc_metadata_batch *send_initial_metadata; - grpc_byte_stream *send_message; - grpc_metadata_batch *send_trailing_metadata; - int64_t outgoing_window; - /** how much window should we announce? */ - uint32_t announce_window; - gpr_slice_buffer flow_controlled_buffer; - gpr_slice fetching_slice; - size_t stream_fetched; - grpc_closure finished_fetch; - /** stats gathered during the write */ - grpc_transport_one_way_stats stats; -} grpc_chttp2_stream_writing; -struct grpc_chttp2_stream_parsing { /** saw some stream level error */ grpc_error *forced_close_error; - /** HTTP2 stream id for this stream, or zero if one has not been assigned */ - uint32_t id; - /** has this stream received a close */ - uint8_t received_close; /** how many header frames have we received? */ uint8_t header_frames_received; - /** which metadata did we get (on this parse) */ - uint8_t got_metadata_on_parse[2]; - /** should we raise the seen_error flag in transport_global */ - bool seen_error; - bool exceeded_metadata_size; /** window available for peer to send to us */ int64_t incoming_window; /** parsing state for data frames */ grpc_chttp2_data_parser data_parser; - /** amount of window given */ - int64_t outgoing_window; /** number of bytes received - reset at end of parse thread execution */ int64_t received_bytes; - /** stats gathered during the parse */ - grpc_transport_stream_stats stats; - - /** incoming metadata */ - grpc_chttp2_incoming_metadata_buffer metadata_buffer[2]; -}; -struct grpc_chttp2_stream { - grpc_stream_refcount *refcount; - grpc_chttp2_stream_global global; - grpc_chttp2_stream_writing writing; - grpc_chttp2_stream_parsing parsing; + bool sent_initial_metadata; + bool sent_trailing_metadata; + /** how much window should we announce? */ + uint32_t announce_window; + gpr_slice_buffer flow_controlled_buffer; - grpc_chttp2_stream_link links[STREAM_LIST_COUNT]; - uint8_t included[STREAM_LIST_COUNT]; + grpc_chttp2_write_cb *on_write_finished_cbs; + grpc_chttp2_write_cb *finish_after_write; + size_t sending_bytes; }; /** Transport writing call flow: @@ -549,168 +431,71 @@ struct grpc_chttp2_stream { The actual call chain is documented in the implementation of this function. */ void grpc_chttp2_initiate_write(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_global *transport_global, + grpc_chttp2_transport *t, bool covered_by_poller, const char *reason); /** Someone is unlocking the transport mutex: check to see if writes - are required, and schedule them if so */ -int grpc_chttp2_unlocking_check_writes(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_global *global, - grpc_chttp2_transport_writing *writing); -void grpc_chttp2_perform_writes( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_writing *transport_writing, - grpc_endpoint *endpoint); -void grpc_chttp2_terminate_writing(grpc_exec_ctx *exec_ctx, - void *transport_writing, grpc_error *error); -void grpc_chttp2_cleanup_writing(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_global *global, - grpc_chttp2_transport_writing *writing); - -void grpc_chttp2_prepare_to_read(grpc_chttp2_transport_global *global, - grpc_chttp2_transport_parsing *parsing); + are required, and frame them if so */ +bool grpc_chttp2_begin_write(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t); +void grpc_chttp2_end_write(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, + grpc_error *error); + /** Process one slice of incoming data; return 1 if the connection is still viable after reading, or 0 if the connection should be torn down */ -grpc_error *grpc_chttp2_perform_read( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing, - gpr_slice slice); -void grpc_chttp2_publish_reads(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_global *global, - grpc_chttp2_transport_parsing *parsing); - -bool grpc_chttp2_list_add_writable_stream( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global); +grpc_error *grpc_chttp2_perform_read(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, gpr_slice slice); + +bool grpc_chttp2_list_add_writable_stream(grpc_chttp2_transport *t, + grpc_chttp2_stream *s); /** Get a writable stream returns non-zero if there was a stream available */ -int grpc_chttp2_list_pop_writable_stream( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_transport_writing *transport_writing, - grpc_chttp2_stream_global **stream_global, - grpc_chttp2_stream_writing **stream_writing); +int grpc_chttp2_list_pop_writable_stream(grpc_chttp2_transport *t, + grpc_chttp2_stream **s); bool grpc_chttp2_list_remove_writable_stream( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global) GRPC_MUST_USE_RESULT; - -void grpc_chttp2_list_add_writing_stream( - grpc_chttp2_transport_writing *transport_writing, - grpc_chttp2_stream_writing *stream_writing); -int grpc_chttp2_list_have_writing_streams( - grpc_chttp2_transport_writing *transport_writing); -int grpc_chttp2_list_pop_writing_stream( - grpc_chttp2_transport_writing *transport_writing, - grpc_chttp2_stream_writing **stream_writing); - -void grpc_chttp2_list_add_written_stream( - grpc_chttp2_transport_writing *transport_writing, - grpc_chttp2_stream_writing *stream_writing); -int grpc_chttp2_list_pop_written_stream( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_transport_writing *transport_writing, - grpc_chttp2_stream_global **stream_global, - grpc_chttp2_stream_writing **stream_writing); - -void grpc_chttp2_list_add_parsing_seen_stream( - grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_parsing *stream_parsing); -int grpc_chttp2_list_pop_parsing_seen_stream( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_global **stream_global, - grpc_chttp2_stream_parsing **stream_parsing); - -void grpc_chttp2_list_add_waiting_for_concurrency( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global); -int grpc_chttp2_list_pop_waiting_for_concurrency( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global **stream_global); - -void grpc_chttp2_list_add_check_read_ops( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global); -bool grpc_chttp2_list_remove_check_read_ops( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global); -int grpc_chttp2_list_pop_check_read_ops( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global **stream_global); - -void grpc_chttp2_list_add_writing_stalled_by_transport( - grpc_chttp2_transport_writing *transport_writing, - grpc_chttp2_stream_writing *stream_writing); -bool grpc_chttp2_list_flush_writing_stalled_by_transport( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_writing *transport_writing); - -void grpc_chttp2_list_add_stalled_by_transport( - grpc_chttp2_transport_writing *transport_writing, - grpc_chttp2_stream_writing *stream_writing); -int grpc_chttp2_list_pop_stalled_by_transport( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global **stream_global); -void grpc_chttp2_list_remove_stalled_by_transport( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global); - -void grpc_chttp2_list_add_unannounced_incoming_window_available( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global); -void grpc_chttp2_list_remove_unannounced_incoming_window_available( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global); -int grpc_chttp2_list_pop_unannounced_incoming_window_available( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_global **stream_global, - grpc_chttp2_stream_parsing **stream_parsing); - -void grpc_chttp2_list_add_closed_waiting_for_parsing( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global); -int grpc_chttp2_list_pop_closed_waiting_for_parsing( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global **stream_global); - -void grpc_chttp2_list_add_closed_waiting_for_writing( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global); -int grpc_chttp2_list_pop_closed_waiting_for_writing( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global **stream_global); - -grpc_chttp2_stream_parsing *grpc_chttp2_parsing_lookup_stream( - grpc_chttp2_transport_parsing *transport_parsing, uint32_t id); -grpc_chttp2_stream_parsing *grpc_chttp2_parsing_accept_stream( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing, - uint32_t id); - -void grpc_chttp2_add_incoming_goaway( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_global *transport_global, - uint32_t goaway_error, gpr_slice goaway_text); - -void grpc_chttp2_register_stream(grpc_chttp2_transport *t, - grpc_chttp2_stream *s); -/* returns 1 if this is the last stream, 0 otherwise */ -int grpc_chttp2_unregister_stream(grpc_chttp2_transport *t, - grpc_chttp2_stream *s) GRPC_MUST_USE_RESULT; -int grpc_chttp2_has_streams(grpc_chttp2_transport *t); -void grpc_chttp2_for_all_streams( - grpc_chttp2_transport_global *transport_global, void *user_data, - void (*cb)(grpc_chttp2_transport_global *transport_global, void *user_data, - grpc_chttp2_stream_global *stream_global)); - -void grpc_chttp2_parsing_become_skip_parser( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing); - -void grpc_chttp2_complete_closure_step( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global, grpc_closure **pclosure, - grpc_error *error); - -void grpc_chttp2_run_with_global_lock(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport *transport, - grpc_chttp2_stream *optional_stream, - grpc_chttp2_locked_action action, - void *arg, size_t sizeof_arg); + grpc_chttp2_transport *t, grpc_chttp2_stream *s) GRPC_MUST_USE_RESULT; + +bool grpc_chttp2_list_add_writing_stream(grpc_chttp2_transport *t, + grpc_chttp2_stream *s); +int grpc_chttp2_list_have_writing_streams(grpc_chttp2_transport *t); +int grpc_chttp2_list_pop_writing_stream(grpc_chttp2_transport *t, + grpc_chttp2_stream **s); + +void grpc_chttp2_list_add_written_stream(grpc_chttp2_transport *t, + grpc_chttp2_stream *s); +int grpc_chttp2_list_pop_written_stream(grpc_chttp2_transport *t, + grpc_chttp2_stream **s); + +void grpc_chttp2_list_add_waiting_for_concurrency(grpc_chttp2_transport *t, + grpc_chttp2_stream *s); +int grpc_chttp2_list_pop_waiting_for_concurrency(grpc_chttp2_transport *t, + grpc_chttp2_stream **s); + +void grpc_chttp2_list_add_stalled_by_transport(grpc_chttp2_transport *t, + grpc_chttp2_stream *s); +int grpc_chttp2_list_pop_stalled_by_transport(grpc_chttp2_transport *t, + grpc_chttp2_stream **s); +void grpc_chttp2_list_remove_stalled_by_transport(grpc_chttp2_transport *t, + grpc_chttp2_stream *s); + +grpc_chttp2_stream *grpc_chttp2_parsing_lookup_stream(grpc_chttp2_transport *t, + uint32_t id); +grpc_chttp2_stream *grpc_chttp2_parsing_accept_stream(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + uint32_t id); + +void grpc_chttp2_add_incoming_goaway(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + uint32_t goaway_error, + gpr_slice goaway_text); + +void grpc_chttp2_parsing_become_skip_parser(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t); + +void grpc_chttp2_complete_closure_step(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s, + grpc_closure **pclosure, + grpc_error *error, const char *desc); #define GRPC_CHTTP2_CLIENT_CONNECT_STRING "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n" #define GRPC_CHTTP2_CLIENT_CONNECT_STRLEN \ @@ -801,57 +586,83 @@ void grpc_chttp2_flowctl_trace(const char *file, int line, const char *phase, const char *var2, int is_client, uint32_t stream_id, int64_t val1, int64_t val2); -void grpc_chttp2_fake_status(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream, +void grpc_chttp2_fake_status(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, + grpc_chttp2_stream *stream, grpc_status_code status, gpr_slice *details); -void grpc_chttp2_mark_stream_closed( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global, int close_reads, int close_writes, - grpc_error *error); +void grpc_chttp2_mark_stream_closed(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s, int close_reads, + int close_writes, grpc_error *error); void grpc_chttp2_start_writing(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_global *transport_global); + grpc_chttp2_transport *t); #ifdef GRPC_STREAM_REFCOUNT_DEBUG -#define GRPC_CHTTP2_STREAM_REF(stream_global, reason) \ - grpc_chttp2_stream_ref(stream_global, reason) -#define GRPC_CHTTP2_STREAM_UNREF(exec_ctx, stream_global, reason) \ - grpc_chttp2_stream_unref(exec_ctx, stream_global, reason) -void grpc_chttp2_stream_ref(grpc_chttp2_stream_global *stream_global, - const char *reason); -void grpc_chttp2_stream_unref(grpc_exec_ctx *exec_ctx, - grpc_chttp2_stream_global *stream_global, +#define GRPC_CHTTP2_STREAM_REF(stream, reason) \ + grpc_chttp2_stream_ref(stream, reason) +#define GRPC_CHTTP2_STREAM_UNREF(exec_ctx, stream, reason) \ + grpc_chttp2_stream_unref(exec_ctx, stream, reason) +void grpc_chttp2_stream_ref(grpc_chttp2_stream *s, const char *reason); +void grpc_chttp2_stream_unref(grpc_exec_ctx *exec_ctx, grpc_chttp2_stream *s, const char *reason); #else -#define GRPC_CHTTP2_STREAM_REF(stream_global, reason) \ - grpc_chttp2_stream_ref(stream_global) -#define GRPC_CHTTP2_STREAM_UNREF(exec_ctx, stream_global, reason) \ - grpc_chttp2_stream_unref(exec_ctx, stream_global) -void grpc_chttp2_stream_ref(grpc_chttp2_stream_global *stream_global); -void grpc_chttp2_stream_unref(grpc_exec_ctx *exec_ctx, - grpc_chttp2_stream_global *stream_global); +#define GRPC_CHTTP2_STREAM_REF(stream, reason) grpc_chttp2_stream_ref(stream) +#define GRPC_CHTTP2_STREAM_UNREF(exec_ctx, stream, reason) \ + grpc_chttp2_stream_unref(exec_ctx, stream) +void grpc_chttp2_stream_ref(grpc_chttp2_stream *s); +void grpc_chttp2_stream_unref(grpc_exec_ctx *exec_ctx, grpc_chttp2_stream *s); +#endif + +//#define GRPC_CHTTP2_REFCOUNTING_DEBUG 1 +#ifdef GRPC_CHTTP2_REFCOUNTING_DEBUG +#define GRPC_CHTTP2_REF_TRANSPORT(t, r) \ + grpc_chttp2_ref_transport(t, r, __FILE__, __LINE__) +#define GRPC_CHTTP2_UNREF_TRANSPORT(cl, t, r) \ + grpc_chttp2_unref_transport(cl, t, r, __FILE__, __LINE__) +void grpc_chttp2_unref_transport(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, const char *reason, + const char *file, int line); +void grpc_chttp2_ref_transport(grpc_chttp2_transport *t, const char *reason, + const char *file, int line); +#else +#define GRPC_CHTTP2_REF_TRANSPORT(t, r) grpc_chttp2_ref_transport(t) +#define GRPC_CHTTP2_UNREF_TRANSPORT(cl, t, r) grpc_chttp2_unref_transport(cl, t) +void grpc_chttp2_unref_transport(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t); +void grpc_chttp2_ref_transport(grpc_chttp2_transport *t); #endif grpc_chttp2_incoming_byte_stream *grpc_chttp2_incoming_byte_stream_create( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_parsing *stream_parsing, uint32_t frame_size, - uint32_t flags, grpc_chttp2_incoming_frame_queue *add_to_queue); + grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, grpc_chttp2_stream *s, + uint32_t frame_size, uint32_t flags); void grpc_chttp2_incoming_byte_stream_push(grpc_exec_ctx *exec_ctx, grpc_chttp2_incoming_byte_stream *bs, gpr_slice slice); void grpc_chttp2_incoming_byte_stream_finished( grpc_exec_ctx *exec_ctx, grpc_chttp2_incoming_byte_stream *bs, - grpc_error *error, int from_parsing_thread); + grpc_error *error); -void grpc_chttp2_ack_ping(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_parsing *parsing, +void grpc_chttp2_ack_ping(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, const uint8_t *opaque_8bytes); /** add a ref to the stream and add it to the writable list; ref will be dropped in writing.c */ void grpc_chttp2_become_writable(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global, - bool covered_by_poller, const char *reason); + grpc_chttp2_transport *t, + grpc_chttp2_stream *s, bool covered_by_poller, + const char *reason); + +void grpc_chttp2_cancel_stream(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, grpc_chttp2_stream *s, + grpc_error *due_to_error); + +void grpc_chttp2_maybe_complete_recv_initial_metadata(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s); +void grpc_chttp2_maybe_complete_recv_message(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s); +void grpc_chttp2_maybe_complete_recv_trailing_metadata(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s); #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_INTERNAL_H */ diff --git a/src/core/ext/transport/chttp2/transport/parsing.c b/src/core/ext/transport/chttp2/transport/parsing.c index 482cd55c44..aa36f90cae 100644 --- a/src/core/ext/transport/chttp2/transport/parsing.c +++ b/src/core/ext/transport/chttp2/transport/parsing.c @@ -45,223 +45,34 @@ #include "src/core/lib/transport/static_metadata.h" #include "src/core/lib/transport/timeout_encoding.h" -#define TRANSPORT_FROM_PARSING(tp) \ - ((grpc_chttp2_transport *)((char *)(tp)-offsetof(grpc_chttp2_transport, \ - parsing))) - -static grpc_error *init_frame_parser( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing); -static grpc_error *init_header_frame_parser( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing, - int is_continuation); -static grpc_error *init_data_frame_parser( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing); -static grpc_error *init_rst_stream_parser( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing); -static grpc_error *init_settings_frame_parser( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing); -static grpc_error *init_window_update_frame_parser( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing); -static grpc_error *init_ping_parser( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing); -static grpc_error *init_goaway_parser( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing); -static grpc_error *init_skip_frame_parser( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing, - int is_header); - -static grpc_error *parse_frame_slice( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing, - gpr_slice slice, int is_last); - -void grpc_chttp2_prepare_to_read( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_transport_parsing *transport_parsing) { - grpc_chttp2_stream_global *stream_global; - grpc_chttp2_stream_parsing *stream_parsing; - - GPR_TIMER_BEGIN("grpc_chttp2_prepare_to_read", 0); - - transport_parsing->next_stream_id = transport_global->next_stream_id; - memcpy(transport_parsing->last_sent_settings, - transport_global->settings[GRPC_SENT_SETTINGS], - sizeof(transport_parsing->last_sent_settings)); - transport_parsing->max_frame_size = - transport_global->settings[GRPC_ACKED_SETTINGS] - [GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE]; - - /* update the parsing view of incoming window */ - while (grpc_chttp2_list_pop_unannounced_incoming_window_available( - transport_global, transport_parsing, &stream_global, &stream_parsing)) { - GRPC_CHTTP2_FLOW_MOVE_STREAM("parse", transport_parsing, stream_parsing, - incoming_window, stream_global, - unannounced_incoming_window_for_parse); - } - - GPR_TIMER_END("grpc_chttp2_prepare_to_read", 0); -} - -void grpc_chttp2_publish_reads( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_global *transport_global, - grpc_chttp2_transport_parsing *transport_parsing) { - grpc_chttp2_stream_global *stream_global; - grpc_chttp2_stream_parsing *stream_parsing; - int was_zero; - int is_zero; - - /* transport_parsing->last_incoming_stream_id is used as - last-grpc_chttp2_stream-id when - sending GOAWAY frame. - https://tools.ietf.org/html/draft-ietf-httpbis-http2-17#section-6.8 - says that last-grpc_chttp2_stream-id is peer-initiated grpc_chttp2_stream - ID. So, - since we don't have server pushed streams, client should send - GOAWAY last-grpc_chttp2_stream-id=0 in this case. */ - if (!transport_parsing->is_client) { - transport_global->last_incoming_stream_id = - transport_parsing->last_incoming_stream_id; - } - - /* update global settings */ - if (transport_parsing->settings_updated) { - memcpy(transport_global->settings[GRPC_PEER_SETTINGS], - transport_parsing->settings, sizeof(transport_parsing->settings)); - transport_parsing->settings_updated = 0; - } - - /* update settings based on ack if received */ - if (transport_parsing->settings_ack_received) { - memcpy(transport_global->settings[GRPC_ACKED_SETTINGS], - transport_global->settings[GRPC_SENT_SETTINGS], - GRPC_CHTTP2_NUM_SETTINGS * sizeof(uint32_t)); - transport_parsing->settings_ack_received = 0; - transport_global->sent_local_settings = 0; - } - - /* move goaway to the global state if we received one (it will be - published later */ - if (transport_parsing->goaway_received) { - grpc_chttp2_add_incoming_goaway(exec_ctx, transport_global, - (uint32_t)transport_parsing->goaway_error, - transport_parsing->goaway_text); - transport_parsing->goaway_text = gpr_empty_slice(); - transport_parsing->goaway_received = 0; - } - - /* propagate flow control tokens to global state */ - was_zero = transport_global->outgoing_window <= 0; - GRPC_CHTTP2_FLOW_MOVE_TRANSPORT("parsed", transport_global, outgoing_window, - transport_parsing, outgoing_window); - is_zero = transport_global->outgoing_window <= 0; - if (was_zero && !is_zero) { - grpc_chttp2_initiate_write(exec_ctx, transport_global, false, - "new_global_flow_control"); - } - - if (transport_parsing->incoming_window < - transport_global->connection_window_target * 3 / 4) { - int64_t announce_bytes = transport_global->connection_window_target - - transport_parsing->incoming_window; - GRPC_CHTTP2_FLOW_CREDIT_TRANSPORT("parsed", transport_global, - announce_incoming_window, announce_bytes); - GRPC_CHTTP2_FLOW_CREDIT_TRANSPORT("parsed", transport_parsing, - incoming_window, announce_bytes); - grpc_chttp2_initiate_write(exec_ctx, transport_global, false, - "global incoming window"); - } - - /* for each stream that saw an update, fixup global state */ - while (grpc_chttp2_list_pop_parsing_seen_stream( - transport_global, transport_parsing, &stream_global, &stream_parsing)) { - if (stream_parsing->seen_error) { - stream_global->seen_error = true; - stream_global->exceeded_metadata_size = - stream_parsing->exceeded_metadata_size; - grpc_chttp2_list_add_check_read_ops(transport_global, stream_global); - } - - /* flush stats to global stream state */ - grpc_transport_move_stats(&stream_parsing->stats, &stream_global->stats); - - /* update outgoing flow control window */ - was_zero = stream_global->outgoing_window <= 0; - GRPC_CHTTP2_FLOW_MOVE_STREAM("parsed", transport_global, stream_global, - outgoing_window, stream_parsing, - outgoing_window); - is_zero = stream_global->outgoing_window <= 0; - if (was_zero && !is_zero) { - grpc_chttp2_become_writable(exec_ctx, transport_global, stream_global, - false, "stream.read_flow_control"); - } - - stream_global->max_recv_bytes -= (uint32_t)GPR_MIN( - stream_global->max_recv_bytes, stream_parsing->received_bytes); - stream_parsing->received_bytes = 0; - - /* publish incoming stream ops */ - if (stream_global->incoming_frames.tail != NULL) { - stream_global->incoming_frames.tail->is_tail = 0; - } - if (stream_parsing->data_parser.incoming_frames.head != NULL) { - grpc_chttp2_list_add_check_read_ops(transport_global, stream_global); - } - grpc_chttp2_incoming_frame_queue_merge( - &stream_global->incoming_frames, - &stream_parsing->data_parser.incoming_frames); - if (stream_global->incoming_frames.tail != NULL) { - stream_global->incoming_frames.tail->is_tail = 1; - } - - if (!stream_global->published_initial_metadata && - stream_parsing->got_metadata_on_parse[0]) { - stream_parsing->got_metadata_on_parse[0] = 0; - stream_global->published_initial_metadata = 1; - GPR_SWAP(grpc_chttp2_incoming_metadata_buffer, - stream_parsing->metadata_buffer[0], - stream_global->received_initial_metadata); - grpc_chttp2_list_add_check_read_ops(transport_global, stream_global); - } - if (!stream_global->published_trailing_metadata && - stream_parsing->got_metadata_on_parse[1]) { - stream_parsing->got_metadata_on_parse[1] = 0; - stream_global->published_trailing_metadata = 1; - GPR_SWAP(grpc_chttp2_incoming_metadata_buffer, - stream_parsing->metadata_buffer[1], - stream_global->received_trailing_metadata); - grpc_chttp2_list_add_check_read_ops(transport_global, stream_global); - } - - if (stream_parsing->forced_close_error != GRPC_ERROR_NONE) { - intptr_t reason; - bool has_reason = grpc_error_get_int(stream_parsing->forced_close_error, - GRPC_ERROR_INT_HTTP2_ERROR, &reason); - if (has_reason && reason != GRPC_CHTTP2_NO_ERROR) { - grpc_status_code status_code = - has_reason - ? grpc_chttp2_http2_error_to_grpc_status( - (grpc_chttp2_error_code)reason, stream_global->deadline) - : GRPC_STATUS_INTERNAL; - const char *status_details = - grpc_error_string(stream_parsing->forced_close_error); - gpr_slice slice_details = gpr_slice_from_copied_string(status_details); - grpc_error_free_string(status_details); - grpc_chttp2_fake_status(exec_ctx, transport_global, stream_global, - status_code, &slice_details); - } - grpc_chttp2_mark_stream_closed(exec_ctx, transport_global, stream_global, - 1, 1, stream_parsing->forced_close_error); - } - - if (stream_parsing->received_close) { - grpc_chttp2_mark_stream_closed(exec_ctx, transport_global, stream_global, - 1, 0, GRPC_ERROR_NONE); - } - } -} - -grpc_error *grpc_chttp2_perform_read( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing, - gpr_slice slice) { +static grpc_error *init_frame_parser(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t); +static grpc_error *init_header_frame_parser(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + int is_continuation); +static grpc_error *init_data_frame_parser(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t); +static grpc_error *init_rst_stream_parser(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t); +static grpc_error *init_settings_frame_parser(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t); +static grpc_error *init_window_update_frame_parser(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t); +static grpc_error *init_ping_parser(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t); +static grpc_error *init_goaway_parser(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t); +static grpc_error *init_skip_frame_parser(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + int is_header); + +static grpc_error *parse_frame_slice(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, gpr_slice slice, + int is_last); + +grpc_error *grpc_chttp2_perform_read(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + gpr_slice slice) { uint8_t *beg = GPR_SLICE_START_PTR(slice); uint8_t *end = GPR_SLICE_END_PTR(slice); uint8_t *cur = beg; @@ -269,7 +80,7 @@ grpc_error *grpc_chttp2_perform_read( if (cur == end) return GRPC_ERROR_NONE; - switch (transport_parsing->deframe_state) { + switch (t->deframe_state) { case GRPC_DTS_CLIENT_PREFIX_0: case GRPC_DTS_CLIENT_PREFIX_1: case GRPC_DTS_CLIENT_PREFIX_2: @@ -294,25 +105,22 @@ grpc_error *grpc_chttp2_perform_read( case GRPC_DTS_CLIENT_PREFIX_21: case GRPC_DTS_CLIENT_PREFIX_22: case GRPC_DTS_CLIENT_PREFIX_23: - while (cur != end && transport_parsing->deframe_state != GRPC_DTS_FH_0) { - if (*cur != GRPC_CHTTP2_CLIENT_CONNECT_STRING[transport_parsing - ->deframe_state]) { + while (cur != end && t->deframe_state != GRPC_DTS_FH_0) { + if (*cur != GRPC_CHTTP2_CLIENT_CONNECT_STRING[t->deframe_state]) { char *msg; gpr_asprintf( &msg, "Connect string mismatch: expected '%c' (%d) got '%c' (%d) " "at byte %d", - GRPC_CHTTP2_CLIENT_CONNECT_STRING[transport_parsing - ->deframe_state], - (int)(uint8_t)GRPC_CHTTP2_CLIENT_CONNECT_STRING - [transport_parsing->deframe_state], - *cur, (int)*cur, transport_parsing->deframe_state); + GRPC_CHTTP2_CLIENT_CONNECT_STRING[t->deframe_state], + (int)(uint8_t)GRPC_CHTTP2_CLIENT_CONNECT_STRING[t->deframe_state], + *cur, (int)*cur, t->deframe_state); err = GRPC_ERROR_CREATE(msg); gpr_free(msg); return err; } ++cur; - ++transport_parsing->deframe_state; + ++t->deframe_state; } if (cur == end) { return GRPC_ERROR_NONE; @@ -321,100 +129,99 @@ grpc_error *grpc_chttp2_perform_read( dts_fh_0: case GRPC_DTS_FH_0: GPR_ASSERT(cur < end); - transport_parsing->incoming_frame_size = ((uint32_t)*cur) << 16; + t->incoming_frame_size = ((uint32_t)*cur) << 16; if (++cur == end) { - transport_parsing->deframe_state = GRPC_DTS_FH_1; + t->deframe_state = GRPC_DTS_FH_1; return GRPC_ERROR_NONE; } /* fallthrough */ case GRPC_DTS_FH_1: GPR_ASSERT(cur < end); - transport_parsing->incoming_frame_size |= ((uint32_t)*cur) << 8; + t->incoming_frame_size |= ((uint32_t)*cur) << 8; if (++cur == end) { - transport_parsing->deframe_state = GRPC_DTS_FH_2; + t->deframe_state = GRPC_DTS_FH_2; return GRPC_ERROR_NONE; } /* fallthrough */ case GRPC_DTS_FH_2: GPR_ASSERT(cur < end); - transport_parsing->incoming_frame_size |= *cur; + t->incoming_frame_size |= *cur; if (++cur == end) { - transport_parsing->deframe_state = GRPC_DTS_FH_3; + t->deframe_state = GRPC_DTS_FH_3; return GRPC_ERROR_NONE; } /* fallthrough */ case GRPC_DTS_FH_3: GPR_ASSERT(cur < end); - transport_parsing->incoming_frame_type = *cur; + t->incoming_frame_type = *cur; if (++cur == end) { - transport_parsing->deframe_state = GRPC_DTS_FH_4; + t->deframe_state = GRPC_DTS_FH_4; return GRPC_ERROR_NONE; } /* fallthrough */ case GRPC_DTS_FH_4: GPR_ASSERT(cur < end); - transport_parsing->incoming_frame_flags = *cur; + t->incoming_frame_flags = *cur; if (++cur == end) { - transport_parsing->deframe_state = GRPC_DTS_FH_5; + t->deframe_state = GRPC_DTS_FH_5; return GRPC_ERROR_NONE; } /* fallthrough */ case GRPC_DTS_FH_5: GPR_ASSERT(cur < end); - transport_parsing->incoming_stream_id = (((uint32_t)*cur) & 0x7f) << 24; + t->incoming_stream_id = (((uint32_t)*cur) & 0x7f) << 24; if (++cur == end) { - transport_parsing->deframe_state = GRPC_DTS_FH_6; + t->deframe_state = GRPC_DTS_FH_6; return GRPC_ERROR_NONE; } /* fallthrough */ case GRPC_DTS_FH_6: GPR_ASSERT(cur < end); - transport_parsing->incoming_stream_id |= ((uint32_t)*cur) << 16; + t->incoming_stream_id |= ((uint32_t)*cur) << 16; if (++cur == end) { - transport_parsing->deframe_state = GRPC_DTS_FH_7; + t->deframe_state = GRPC_DTS_FH_7; return GRPC_ERROR_NONE; } /* fallthrough */ case GRPC_DTS_FH_7: GPR_ASSERT(cur < end); - transport_parsing->incoming_stream_id |= ((uint32_t)*cur) << 8; + t->incoming_stream_id |= ((uint32_t)*cur) << 8; if (++cur == end) { - transport_parsing->deframe_state = GRPC_DTS_FH_8; + t->deframe_state = GRPC_DTS_FH_8; return GRPC_ERROR_NONE; } /* fallthrough */ case GRPC_DTS_FH_8: GPR_ASSERT(cur < end); - transport_parsing->incoming_stream_id |= ((uint32_t)*cur); - transport_parsing->deframe_state = GRPC_DTS_FRAME; - err = init_frame_parser(exec_ctx, transport_parsing); + t->incoming_stream_id |= ((uint32_t)*cur); + t->deframe_state = GRPC_DTS_FRAME; + err = init_frame_parser(exec_ctx, t); if (err != GRPC_ERROR_NONE) { return err; } - if (transport_parsing->incoming_stream_id != 0 && - transport_parsing->incoming_stream_id > - transport_parsing->last_incoming_stream_id) { - transport_parsing->last_incoming_stream_id = - transport_parsing->incoming_stream_id; + if (t->incoming_stream_id != 0 && + t->incoming_stream_id > t->last_incoming_stream_id) { + t->last_incoming_stream_id = t->incoming_stream_id; } - if (transport_parsing->incoming_frame_size == 0) { - err = parse_frame_slice(exec_ctx, transport_parsing, gpr_empty_slice(), - 1); + if (t->incoming_frame_size == 0) { + err = parse_frame_slice(exec_ctx, t, gpr_empty_slice(), 1); if (err != GRPC_ERROR_NONE) { return err; } - transport_parsing->incoming_stream = NULL; + t->incoming_stream = NULL; if (++cur == end) { - transport_parsing->deframe_state = GRPC_DTS_FH_0; + t->deframe_state = GRPC_DTS_FH_0; return GRPC_ERROR_NONE; } goto dts_fh_0; /* loop */ - } else if (transport_parsing->incoming_frame_size > - transport_parsing->max_frame_size) { + } else if (t->incoming_frame_size > + t->settings[GRPC_ACKED_SETTINGS] + [GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE]) { char *msg; gpr_asprintf(&msg, "Frame size %d is larger than max frame size %d", - transport_parsing->incoming_frame_size, - transport_parsing->max_frame_size); + t->incoming_frame_size, + t->settings[GRPC_ACKED_SETTINGS] + [GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE]); err = GRPC_ERROR_CREATE(msg); gpr_free(msg); return err; @@ -425,41 +232,39 @@ grpc_error *grpc_chttp2_perform_read( /* fallthrough */ case GRPC_DTS_FRAME: GPR_ASSERT(cur < end); - if ((uint32_t)(end - cur) == transport_parsing->incoming_frame_size) { - err = parse_frame_slice(exec_ctx, transport_parsing, + if ((uint32_t)(end - cur) == t->incoming_frame_size) { + err = parse_frame_slice(exec_ctx, t, gpr_slice_sub_no_ref(slice, (size_t)(cur - beg), (size_t)(end - beg)), 1); if (err != GRPC_ERROR_NONE) { return err; } - transport_parsing->deframe_state = GRPC_DTS_FH_0; - transport_parsing->incoming_stream = NULL; + t->deframe_state = GRPC_DTS_FH_0; + t->incoming_stream = NULL; return GRPC_ERROR_NONE; - } else if ((uint32_t)(end - cur) > - transport_parsing->incoming_frame_size) { + } else if ((uint32_t)(end - cur) > t->incoming_frame_size) { size_t cur_offset = (size_t)(cur - beg); err = parse_frame_slice( - exec_ctx, transport_parsing, - gpr_slice_sub_no_ref( - slice, cur_offset, - cur_offset + transport_parsing->incoming_frame_size), + exec_ctx, t, + gpr_slice_sub_no_ref(slice, cur_offset, + cur_offset + t->incoming_frame_size), 1); if (err != GRPC_ERROR_NONE) { return err; } - cur += transport_parsing->incoming_frame_size; - transport_parsing->incoming_stream = NULL; + cur += t->incoming_frame_size; + t->incoming_stream = NULL; goto dts_fh_0; /* loop */ } else { - err = parse_frame_slice(exec_ctx, transport_parsing, + err = parse_frame_slice(exec_ctx, t, gpr_slice_sub_no_ref(slice, (size_t)(cur - beg), (size_t)(end - beg)), 0); if (err != GRPC_ERROR_NONE) { return err; } - transport_parsing->incoming_frame_size -= (uint32_t)(end - cur); + t->incoming_frame_size -= (uint32_t)(end - cur); return GRPC_ERROR_NONE; } GPR_UNREACHABLE_CODE(return 0); @@ -468,175 +273,164 @@ grpc_error *grpc_chttp2_perform_read( GPR_UNREACHABLE_CODE(return 0); } -static grpc_error *init_frame_parser( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing) { - if (transport_parsing->is_first_frame && - transport_parsing->incoming_frame_type != GRPC_CHTTP2_FRAME_SETTINGS) { +static grpc_error *init_frame_parser(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t) { + if (t->is_first_frame && + t->incoming_frame_type != GRPC_CHTTP2_FRAME_SETTINGS) { char *msg; gpr_asprintf( &msg, "Expected SETTINGS frame as the first frame, got frame type %d", - transport_parsing->incoming_frame_type); + t->incoming_frame_type); grpc_error *err = GRPC_ERROR_CREATE(msg); gpr_free(msg); return err; } - transport_parsing->is_first_frame = false; - if (transport_parsing->expect_continuation_stream_id != 0) { - if (transport_parsing->incoming_frame_type != - GRPC_CHTTP2_FRAME_CONTINUATION) { + t->is_first_frame = false; + if (t->expect_continuation_stream_id != 0) { + if (t->incoming_frame_type != GRPC_CHTTP2_FRAME_CONTINUATION) { char *msg; gpr_asprintf(&msg, "Expected CONTINUATION frame, got frame type %02x", - transport_parsing->incoming_frame_type); + t->incoming_frame_type); grpc_error *err = GRPC_ERROR_CREATE(msg); gpr_free(msg); return err; } - if (transport_parsing->expect_continuation_stream_id != - transport_parsing->incoming_stream_id) { + if (t->expect_continuation_stream_id != t->incoming_stream_id) { char *msg; gpr_asprintf( &msg, "Expected CONTINUATION frame for grpc_chttp2_stream %08x, got " "grpc_chttp2_stream %08x", - transport_parsing->expect_continuation_stream_id, - transport_parsing->incoming_stream_id); + t->expect_continuation_stream_id, t->incoming_stream_id); grpc_error *err = GRPC_ERROR_CREATE(msg); gpr_free(msg); return err; } - return init_header_frame_parser(exec_ctx, transport_parsing, 1); + return init_header_frame_parser(exec_ctx, t, 1); } - switch (transport_parsing->incoming_frame_type) { + switch (t->incoming_frame_type) { case GRPC_CHTTP2_FRAME_DATA: - return init_data_frame_parser(exec_ctx, transport_parsing); + return init_data_frame_parser(exec_ctx, t); case GRPC_CHTTP2_FRAME_HEADER: - return init_header_frame_parser(exec_ctx, transport_parsing, 0); + return init_header_frame_parser(exec_ctx, t, 0); case GRPC_CHTTP2_FRAME_CONTINUATION: return GRPC_ERROR_CREATE("Unexpected CONTINUATION frame"); case GRPC_CHTTP2_FRAME_RST_STREAM: - return init_rst_stream_parser(exec_ctx, transport_parsing); + return init_rst_stream_parser(exec_ctx, t); case GRPC_CHTTP2_FRAME_SETTINGS: - return init_settings_frame_parser(exec_ctx, transport_parsing); + return init_settings_frame_parser(exec_ctx, t); case GRPC_CHTTP2_FRAME_WINDOW_UPDATE: - return init_window_update_frame_parser(exec_ctx, transport_parsing); + return init_window_update_frame_parser(exec_ctx, t); case GRPC_CHTTP2_FRAME_PING: - return init_ping_parser(exec_ctx, transport_parsing); + return init_ping_parser(exec_ctx, t); case GRPC_CHTTP2_FRAME_GOAWAY: - return init_goaway_parser(exec_ctx, transport_parsing); + return init_goaway_parser(exec_ctx, t); default: if (grpc_http_trace) { - gpr_log(GPR_ERROR, "Unknown frame type %02x", - transport_parsing->incoming_frame_type); + gpr_log(GPR_ERROR, "Unknown frame type %02x", t->incoming_frame_type); } - return init_skip_frame_parser(exec_ctx, transport_parsing, 0); + return init_skip_frame_parser(exec_ctx, t, 0); } } static grpc_error *skip_parser(grpc_exec_ctx *exec_ctx, void *parser, - grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_parsing *stream_parsing, + grpc_chttp2_transport *t, grpc_chttp2_stream *s, gpr_slice slice, int is_last) { return GRPC_ERROR_NONE; } -static void skip_header(void *tp, grpc_mdelem *md) { GRPC_MDELEM_UNREF(md); } +static void skip_header(grpc_exec_ctx *exec_ctx, void *tp, grpc_mdelem *md) { + GRPC_MDELEM_UNREF(md); +} -static grpc_error *init_skip_frame_parser( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing, - int is_header) { +static grpc_error *init_skip_frame_parser(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + int is_header) { if (is_header) { - uint8_t is_eoh = transport_parsing->expect_continuation_stream_id != 0; - transport_parsing->parser = grpc_chttp2_header_parser_parse; - transport_parsing->parser_data = &transport_parsing->hpack_parser; - transport_parsing->hpack_parser.on_header = skip_header; - transport_parsing->hpack_parser.on_header_user_data = NULL; - transport_parsing->hpack_parser.is_boundary = is_eoh; - transport_parsing->hpack_parser.is_eof = - (uint8_t)(is_eoh ? transport_parsing->header_eof : 0); + uint8_t is_eoh = t->expect_continuation_stream_id != 0; + t->parser = grpc_chttp2_header_parser_parse; + t->parser_data = &t->hpack_parser; + t->hpack_parser.on_header = skip_header; + t->hpack_parser.on_header_user_data = NULL; + t->hpack_parser.is_boundary = is_eoh; + t->hpack_parser.is_eof = (uint8_t)(is_eoh ? t->header_eof : 0); } else { - transport_parsing->parser = skip_parser; + t->parser = skip_parser; } return GRPC_ERROR_NONE; } -void grpc_chttp2_parsing_become_skip_parser( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing) { - init_skip_frame_parser( - exec_ctx, transport_parsing, - transport_parsing->parser == grpc_chttp2_header_parser_parse); +void grpc_chttp2_parsing_become_skip_parser(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t) { + init_skip_frame_parser(exec_ctx, t, + t->parser == grpc_chttp2_header_parser_parse); } -static grpc_error *update_incoming_window( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_parsing *stream_parsing) { - uint32_t incoming_frame_size = transport_parsing->incoming_frame_size; - if (incoming_frame_size > transport_parsing->incoming_window) { +static grpc_error *update_incoming_window(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + grpc_chttp2_stream *s) { + uint32_t incoming_frame_size = t->incoming_frame_size; + if (incoming_frame_size > t->incoming_window) { char *msg; gpr_asprintf(&msg, "frame of size %d overflows incoming window of %" PRId64, - transport_parsing->incoming_frame_size, - transport_parsing->incoming_window); + t->incoming_frame_size, t->incoming_window); grpc_error *err = GRPC_ERROR_CREATE(msg); gpr_free(msg); return err; } - if (incoming_frame_size > stream_parsing->incoming_window) { + if (incoming_frame_size > s->incoming_window) { char *msg; gpr_asprintf(&msg, "frame of size %d overflows incoming window of %" PRId64, - transport_parsing->incoming_frame_size, - stream_parsing->incoming_window); + t->incoming_frame_size, s->incoming_window); grpc_error *err = GRPC_ERROR_CREATE(msg); gpr_free(msg); return err; } - GRPC_CHTTP2_FLOW_DEBIT_TRANSPORT("parse", transport_parsing, incoming_window, + GRPC_CHTTP2_FLOW_DEBIT_TRANSPORT("parse", t, incoming_window, incoming_frame_size); - GRPC_CHTTP2_FLOW_DEBIT_STREAM("parse", transport_parsing, stream_parsing, - incoming_window, incoming_frame_size); - stream_parsing->received_bytes += incoming_frame_size; - - grpc_chttp2_list_add_parsing_seen_stream(transport_parsing, stream_parsing); + GRPC_CHTTP2_FLOW_DEBIT_STREAM("parse", t, s, incoming_window, + incoming_frame_size); + s->received_bytes += incoming_frame_size; + s->max_recv_bytes -= + (uint32_t)GPR_MIN(s->max_recv_bytes, incoming_frame_size); return GRPC_ERROR_NONE; } -static grpc_error *init_data_frame_parser( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing) { - grpc_chttp2_stream_parsing *stream_parsing = - grpc_chttp2_parsing_lookup_stream(transport_parsing, - transport_parsing->incoming_stream_id); +static grpc_error *init_data_frame_parser(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t) { + grpc_chttp2_stream *s = + grpc_chttp2_parsing_lookup_stream(t, t->incoming_stream_id); grpc_error *err = GRPC_ERROR_NONE; - if (stream_parsing == NULL) { - return init_skip_frame_parser(exec_ctx, transport_parsing, 0); + if (s == NULL) { + return init_skip_frame_parser(exec_ctx, t, 0); } - stream_parsing->stats.incoming.framing_bytes += 9; - if (stream_parsing->received_close) { - return init_skip_frame_parser(exec_ctx, transport_parsing, 0); + s->stats.incoming.framing_bytes += 9; + if (s->read_closed) { + return init_skip_frame_parser(exec_ctx, t, 0); } if (err == GRPC_ERROR_NONE) { - err = update_incoming_window(exec_ctx, transport_parsing, stream_parsing); + err = update_incoming_window(exec_ctx, t, s); } if (err == GRPC_ERROR_NONE) { - err = grpc_chttp2_data_parser_begin_frame( - &stream_parsing->data_parser, transport_parsing->incoming_frame_flags, - stream_parsing->id); + err = grpc_chttp2_data_parser_begin_frame(&s->data_parser, + t->incoming_frame_flags, s->id); } if (err == GRPC_ERROR_NONE) { - transport_parsing->incoming_stream = stream_parsing; - transport_parsing->parser = grpc_chttp2_data_parser_parse; - transport_parsing->parser_data = &stream_parsing->data_parser; + t->incoming_stream = s; + t->parser = grpc_chttp2_data_parser_parse; + t->parser_data = &s->data_parser; return GRPC_ERROR_NONE; } else if (grpc_error_get_int(err, GRPC_ERROR_INT_STREAM_ID, NULL)) { /* handle stream errors by closing the stream */ - stream_parsing->received_close = 1; - stream_parsing->forced_close_error = err; + grpc_chttp2_mark_stream_closed(exec_ctx, t, s, true, false, err); gpr_slice_buffer_add( - &transport_parsing->qbuf, - grpc_chttp2_rst_stream_create(transport_parsing->incoming_stream_id, - GRPC_CHTTP2_PROTOCOL_ERROR, - &stream_parsing->stats.outgoing)); - return init_skip_frame_parser(exec_ctx, transport_parsing, 0); + &t->qbuf, grpc_chttp2_rst_stream_create(t->incoming_stream_id, + GRPC_CHTTP2_PROTOCOL_ERROR, + &s->stats.outgoing)); + return init_skip_frame_parser(exec_ctx, t, 0); } else { return err; } @@ -644,23 +438,22 @@ static grpc_error *init_data_frame_parser( static void free_timeout(void *p) { gpr_free(p); } -static void on_initial_header(void *tp, grpc_mdelem *md) { - grpc_chttp2_transport_parsing *transport_parsing = tp; - grpc_chttp2_stream_parsing *stream_parsing = - transport_parsing->incoming_stream; +static void on_initial_header(grpc_exec_ctx *exec_ctx, void *tp, + grpc_mdelem *md) { + grpc_chttp2_transport *t = tp; + grpc_chttp2_stream *s = t->incoming_stream; GPR_TIMER_BEGIN("on_initial_header", 0); - GPR_ASSERT(stream_parsing); + GPR_ASSERT(s != NULL); GRPC_CHTTP2_IF_TRACING(gpr_log( - GPR_INFO, "HTTP:%d:HDR:%s: %s: %s", stream_parsing->id, - transport_parsing->is_client ? "CLI" : "SVR", + GPR_INFO, "HTTP:%d:HDR:%s: %s: %s", s->id, t->is_client ? "CLI" : "SVR", grpc_mdstr_as_c_string(md->key), grpc_mdstr_as_c_string(md->value))); if (md->key == GRPC_MDSTR_GRPC_STATUS && md != GRPC_MDELEM_GRPC_STATUS_0) { /* TODO(ctiller): check for a status like " 0" */ - stream_parsing->seen_error = true; + s->seen_error = true; } if (md->key == GRPC_MDSTR_GRPC_TIMEOUT) { @@ -677,306 +470,267 @@ static void on_initial_header(void *tp, grpc_mdelem *md) { grpc_mdelem_set_user_data(md, free_timeout, cached_timeout); } grpc_chttp2_incoming_metadata_buffer_set_deadline( - &stream_parsing->metadata_buffer[0], + &s->metadata_buffer[0], gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC), *cached_timeout)); GRPC_MDELEM_UNREF(md); } else { - const size_t new_size = - stream_parsing->metadata_buffer[0].size + GRPC_MDELEM_LENGTH(md); - grpc_chttp2_transport_global *transport_global = - &TRANSPORT_FROM_PARSING(transport_parsing)->global; + const size_t new_size = s->metadata_buffer[0].size + GRPC_MDELEM_LENGTH(md); const size_t metadata_size_limit = - transport_global->settings[GRPC_LOCAL_SETTINGS] - [GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE]; + t->settings[GRPC_ACKED_SETTINGS] + [GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE]; if (new_size > metadata_size_limit) { - if (!stream_parsing->exceeded_metadata_size) { - gpr_log(GPR_DEBUG, - "received initial metadata size exceeds limit (%" PRIuPTR - " vs. %" PRIuPTR ")", - new_size, metadata_size_limit); - stream_parsing->seen_error = true; - stream_parsing->exceeded_metadata_size = true; - } + gpr_log(GPR_DEBUG, + "received initial metadata size exceeds limit (%" PRIuPTR + " vs. %" PRIuPTR ")", + new_size, metadata_size_limit); + grpc_chttp2_cancel_stream( + exec_ctx, t, s, + grpc_error_set_int( + GRPC_ERROR_CREATE("received initial metadata size exceeds limit"), + GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_RESOURCE_EXHAUSTED)); + grpc_chttp2_parsing_become_skip_parser(exec_ctx, t); + s->seen_error = true; GRPC_MDELEM_UNREF(md); } else { - grpc_chttp2_incoming_metadata_buffer_add( - &stream_parsing->metadata_buffer[0], md); + grpc_chttp2_incoming_metadata_buffer_add(&s->metadata_buffer[0], md); } } - grpc_chttp2_list_add_parsing_seen_stream(transport_parsing, stream_parsing); - GPR_TIMER_END("on_initial_header", 0); } -static void on_trailing_header(void *tp, grpc_mdelem *md) { - grpc_chttp2_transport_parsing *transport_parsing = tp; - grpc_chttp2_stream_parsing *stream_parsing = - transport_parsing->incoming_stream; +static void on_trailing_header(grpc_exec_ctx *exec_ctx, void *tp, + grpc_mdelem *md) { + grpc_chttp2_transport *t = tp; + grpc_chttp2_stream *s = t->incoming_stream; GPR_TIMER_BEGIN("on_trailing_header", 0); - GPR_ASSERT(stream_parsing); + GPR_ASSERT(s != NULL); GRPC_CHTTP2_IF_TRACING(gpr_log( - GPR_INFO, "HTTP:%d:TRL:%s: %s: %s", stream_parsing->id, - transport_parsing->is_client ? "CLI" : "SVR", + GPR_INFO, "HTTP:%d:TRL:%s: %s: %s", s->id, t->is_client ? "CLI" : "SVR", grpc_mdstr_as_c_string(md->key), grpc_mdstr_as_c_string(md->value))); if (md->key == GRPC_MDSTR_GRPC_STATUS && md != GRPC_MDELEM_GRPC_STATUS_0) { /* TODO(ctiller): check for a status like " 0" */ - stream_parsing->seen_error = true; + s->seen_error = true; } - const size_t new_size = - stream_parsing->metadata_buffer[1].size + GRPC_MDELEM_LENGTH(md); - grpc_chttp2_transport_global *transport_global = - &TRANSPORT_FROM_PARSING(transport_parsing)->global; + const size_t new_size = s->metadata_buffer[1].size + GRPC_MDELEM_LENGTH(md); const size_t metadata_size_limit = - transport_global->settings[GRPC_LOCAL_SETTINGS] - [GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE]; + t->settings[GRPC_ACKED_SETTINGS] + [GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE]; if (new_size > metadata_size_limit) { - if (!stream_parsing->exceeded_metadata_size) { - gpr_log(GPR_DEBUG, - "received trailing metadata size exceeds limit (%" PRIuPTR - " vs. %" PRIuPTR ")", - new_size, metadata_size_limit); - stream_parsing->seen_error = true; - stream_parsing->exceeded_metadata_size = true; - } + gpr_log(GPR_DEBUG, + "received trailing metadata size exceeds limit (%" PRIuPTR + " vs. %" PRIuPTR ")", + new_size, metadata_size_limit); + grpc_chttp2_cancel_stream( + exec_ctx, t, s, + grpc_error_set_int( + GRPC_ERROR_CREATE("received trailing metadata size exceeds limit"), + GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_RESOURCE_EXHAUSTED)); + grpc_chttp2_parsing_become_skip_parser(exec_ctx, t); + s->seen_error = true; GRPC_MDELEM_UNREF(md); } else { - grpc_chttp2_incoming_metadata_buffer_add( - &stream_parsing->metadata_buffer[1], md); + grpc_chttp2_incoming_metadata_buffer_add(&s->metadata_buffer[1], md); } - grpc_chttp2_list_add_parsing_seen_stream(transport_parsing, stream_parsing); - GPR_TIMER_END("on_trailing_header", 0); } -static grpc_error *init_header_frame_parser( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing, - int is_continuation) { - uint8_t is_eoh = (transport_parsing->incoming_frame_flags & - GRPC_CHTTP2_DATA_FLAG_END_HEADERS) != 0; - int via_accept = 0; - grpc_chttp2_stream_parsing *stream_parsing; +static grpc_error *init_header_frame_parser(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, + int is_continuation) { + uint8_t is_eoh = + (t->incoming_frame_flags & GRPC_CHTTP2_DATA_FLAG_END_HEADERS) != 0; + grpc_chttp2_stream *s; /* TODO(ctiller): when to increment header_frames_received? */ if (is_eoh) { - transport_parsing->expect_continuation_stream_id = 0; + t->expect_continuation_stream_id = 0; } else { - transport_parsing->expect_continuation_stream_id = - transport_parsing->incoming_stream_id; + t->expect_continuation_stream_id = t->incoming_stream_id; } if (!is_continuation) { - transport_parsing->header_eof = (transport_parsing->incoming_frame_flags & - GRPC_CHTTP2_DATA_FLAG_END_STREAM) != 0; + t->header_eof = + (t->incoming_frame_flags & GRPC_CHTTP2_DATA_FLAG_END_STREAM) != 0; } /* could be a new grpc_chttp2_stream or an existing grpc_chttp2_stream */ - stream_parsing = grpc_chttp2_parsing_lookup_stream( - transport_parsing, transport_parsing->incoming_stream_id); - if (stream_parsing == NULL) { + s = grpc_chttp2_parsing_lookup_stream(t, t->incoming_stream_id); + if (s == NULL) { if (is_continuation) { gpr_log(GPR_ERROR, "grpc_chttp2_stream disbanded before CONTINUATION received"); - return init_skip_frame_parser(exec_ctx, transport_parsing, 1); + return init_skip_frame_parser(exec_ctx, t, 1); } - if (transport_parsing->is_client) { - if ((transport_parsing->incoming_stream_id & 1) && - transport_parsing->incoming_stream_id < - transport_parsing->next_stream_id) { + if (t->is_client) { + if ((t->incoming_stream_id & 1) && + t->incoming_stream_id < t->next_stream_id) { /* this is an old (probably cancelled) grpc_chttp2_stream */ } else { gpr_log(GPR_ERROR, "ignoring new grpc_chttp2_stream creation on client"); } - return init_skip_frame_parser(exec_ctx, transport_parsing, 1); - } else if (transport_parsing->last_incoming_stream_id > - transport_parsing->incoming_stream_id) { + return init_skip_frame_parser(exec_ctx, t, 1); + } else if (t->last_incoming_stream_id > t->incoming_stream_id) { gpr_log(GPR_ERROR, "ignoring out of order new grpc_chttp2_stream request on server; " "last grpc_chttp2_stream " "id=%d, new grpc_chttp2_stream id=%d", - transport_parsing->last_incoming_stream_id, - transport_parsing->incoming_stream_id); - return init_skip_frame_parser(exec_ctx, transport_parsing, 1); - } else if ((transport_parsing->incoming_stream_id & 1) == 0) { + t->last_incoming_stream_id, t->incoming_stream_id); + return init_skip_frame_parser(exec_ctx, t, 1); + } else if ((t->incoming_stream_id & 1) == 0) { gpr_log(GPR_ERROR, "ignoring grpc_chttp2_stream with non-client generated index %d", - transport_parsing->incoming_stream_id); - return init_skip_frame_parser(exec_ctx, transport_parsing, 1); + t->incoming_stream_id); + return init_skip_frame_parser(exec_ctx, t, 1); } - stream_parsing = transport_parsing->incoming_stream = - grpc_chttp2_parsing_accept_stream( - exec_ctx, transport_parsing, transport_parsing->incoming_stream_id); - if (stream_parsing == NULL) { + s = t->incoming_stream = + grpc_chttp2_parsing_accept_stream(exec_ctx, t, t->incoming_stream_id); + if (s == NULL) { gpr_log(GPR_ERROR, "grpc_chttp2_stream not accepted"); - return init_skip_frame_parser(exec_ctx, transport_parsing, 1); + return init_skip_frame_parser(exec_ctx, t, 1); } - via_accept = 1; } else { - transport_parsing->incoming_stream = stream_parsing; + t->incoming_stream = s; } - GPR_ASSERT(stream_parsing != NULL && (via_accept == 0 || via_accept == 1)); - stream_parsing->stats.incoming.framing_bytes += 9; - if (stream_parsing->received_close) { + GPR_ASSERT(s != NULL); + s->stats.incoming.framing_bytes += 9; + if (s->read_closed) { gpr_log(GPR_ERROR, "skipping already closed grpc_chttp2_stream header"); - transport_parsing->incoming_stream = NULL; - return init_skip_frame_parser(exec_ctx, transport_parsing, 1); + t->incoming_stream = NULL; + return init_skip_frame_parser(exec_ctx, t, 1); } - transport_parsing->parser = grpc_chttp2_header_parser_parse; - transport_parsing->parser_data = &transport_parsing->hpack_parser; - switch (stream_parsing->header_frames_received) { + t->parser = grpc_chttp2_header_parser_parse; + t->parser_data = &t->hpack_parser; + switch (s->header_frames_received) { case 0: - transport_parsing->hpack_parser.on_header = on_initial_header; + t->hpack_parser.on_header = on_initial_header; break; case 1: - transport_parsing->hpack_parser.on_header = on_trailing_header; + t->hpack_parser.on_header = on_trailing_header; break; case 2: gpr_log(GPR_ERROR, "too many header frames received"); - return init_skip_frame_parser(exec_ctx, transport_parsing, 1); + return init_skip_frame_parser(exec_ctx, t, 1); } - transport_parsing->hpack_parser.on_header_user_data = transport_parsing; - transport_parsing->hpack_parser.is_boundary = is_eoh; - transport_parsing->hpack_parser.is_eof = - (uint8_t)(is_eoh ? transport_parsing->header_eof : 0); - if (!is_continuation && (transport_parsing->incoming_frame_flags & - GRPC_CHTTP2_FLAG_HAS_PRIORITY)) { - grpc_chttp2_hpack_parser_set_has_priority(&transport_parsing->hpack_parser); + t->hpack_parser.on_header_user_data = t; + t->hpack_parser.is_boundary = is_eoh; + t->hpack_parser.is_eof = (uint8_t)(is_eoh ? t->header_eof : 0); + if (!is_continuation && + (t->incoming_frame_flags & GRPC_CHTTP2_FLAG_HAS_PRIORITY)) { + grpc_chttp2_hpack_parser_set_has_priority(&t->hpack_parser); } return GRPC_ERROR_NONE; } -static grpc_error *init_window_update_frame_parser( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing) { +static grpc_error *init_window_update_frame_parser(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t) { grpc_error *err = grpc_chttp2_window_update_parser_begin_frame( - &transport_parsing->simple.window_update, - transport_parsing->incoming_frame_size, - transport_parsing->incoming_frame_flags); + &t->simple.window_update, t->incoming_frame_size, + t->incoming_frame_flags); if (err != GRPC_ERROR_NONE) return err; - if (transport_parsing->incoming_stream_id != 0) { - grpc_chttp2_stream_parsing *stream_parsing = - transport_parsing->incoming_stream = grpc_chttp2_parsing_lookup_stream( - transport_parsing, transport_parsing->incoming_stream_id); - if (stream_parsing == NULL) { - return init_skip_frame_parser(exec_ctx, transport_parsing, 0); + if (t->incoming_stream_id != 0) { + grpc_chttp2_stream *s = t->incoming_stream = + grpc_chttp2_parsing_lookup_stream(t, t->incoming_stream_id); + if (s == NULL) { + return init_skip_frame_parser(exec_ctx, t, 0); } - stream_parsing->stats.incoming.framing_bytes += 9; + s->stats.incoming.framing_bytes += 9; } - transport_parsing->parser = grpc_chttp2_window_update_parser_parse; - transport_parsing->parser_data = &transport_parsing->simple.window_update; + t->parser = grpc_chttp2_window_update_parser_parse; + t->parser_data = &t->simple.window_update; return GRPC_ERROR_NONE; } -static grpc_error *init_ping_parser( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing) { +static grpc_error *init_ping_parser(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t) { grpc_error *err = grpc_chttp2_ping_parser_begin_frame( - &transport_parsing->simple.ping, transport_parsing->incoming_frame_size, - transport_parsing->incoming_frame_flags); + &t->simple.ping, t->incoming_frame_size, t->incoming_frame_flags); if (err != GRPC_ERROR_NONE) return err; - transport_parsing->parser = grpc_chttp2_ping_parser_parse; - transport_parsing->parser_data = &transport_parsing->simple.ping; + t->parser = grpc_chttp2_ping_parser_parse; + t->parser_data = &t->simple.ping; return GRPC_ERROR_NONE; } -static grpc_error *init_rst_stream_parser( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing) { +static grpc_error *init_rst_stream_parser(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t) { grpc_error *err = grpc_chttp2_rst_stream_parser_begin_frame( - &transport_parsing->simple.rst_stream, - transport_parsing->incoming_frame_size, - transport_parsing->incoming_frame_flags); + &t->simple.rst_stream, t->incoming_frame_size, t->incoming_frame_flags); if (err != GRPC_ERROR_NONE) return err; - grpc_chttp2_stream_parsing *stream_parsing = - transport_parsing->incoming_stream = grpc_chttp2_parsing_lookup_stream( - transport_parsing, transport_parsing->incoming_stream_id); - if (!transport_parsing->incoming_stream) { - return init_skip_frame_parser(exec_ctx, transport_parsing, 0); - } - stream_parsing->stats.incoming.framing_bytes += 9; - transport_parsing->parser = grpc_chttp2_rst_stream_parser_parse; - transport_parsing->parser_data = &transport_parsing->simple.rst_stream; + grpc_chttp2_stream *s = t->incoming_stream = + grpc_chttp2_parsing_lookup_stream(t, t->incoming_stream_id); + if (!t->incoming_stream) { + return init_skip_frame_parser(exec_ctx, t, 0); + } + s->stats.incoming.framing_bytes += 9; + t->parser = grpc_chttp2_rst_stream_parser_parse; + t->parser_data = &t->simple.rst_stream; return GRPC_ERROR_NONE; } -static grpc_error *init_goaway_parser( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing) { +static grpc_error *init_goaway_parser(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t) { grpc_error *err = grpc_chttp2_goaway_parser_begin_frame( - &transport_parsing->goaway_parser, transport_parsing->incoming_frame_size, - transport_parsing->incoming_frame_flags); + &t->goaway_parser, t->incoming_frame_size, t->incoming_frame_flags); if (err != GRPC_ERROR_NONE) return err; - transport_parsing->parser = grpc_chttp2_goaway_parser_parse; - transport_parsing->parser_data = &transport_parsing->goaway_parser; + t->parser = grpc_chttp2_goaway_parser_parse; + t->parser_data = &t->goaway_parser; return GRPC_ERROR_NONE; } -static grpc_error *init_settings_frame_parser( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing) { - if (transport_parsing->incoming_stream_id != 0) { +static grpc_error *init_settings_frame_parser(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t) { + if (t->incoming_stream_id != 0) { return GRPC_ERROR_CREATE("Settings frame received for grpc_chttp2_stream"); } grpc_error *err = grpc_chttp2_settings_parser_begin_frame( - &transport_parsing->simple.settings, - transport_parsing->incoming_frame_size, - transport_parsing->incoming_frame_flags, transport_parsing->settings); + &t->simple.settings, t->incoming_frame_size, t->incoming_frame_flags, + t->settings[GRPC_PEER_SETTINGS]); if (err != GRPC_ERROR_NONE) { return err; } - if (transport_parsing->incoming_frame_flags & GRPC_CHTTP2_FLAG_ACK) { - transport_parsing->settings_ack_received = 1; + if (t->incoming_frame_flags & GRPC_CHTTP2_FLAG_ACK) { + memcpy(t->settings[GRPC_ACKED_SETTINGS], t->settings[GRPC_SENT_SETTINGS], + GRPC_CHTTP2_NUM_SETTINGS * sizeof(uint32_t)); grpc_chttp2_hptbl_set_max_bytes( - &transport_parsing->hpack_parser.table, - transport_parsing - ->last_sent_settings[GRPC_CHTTP2_SETTINGS_HEADER_TABLE_SIZE]); - transport_parsing->max_frame_size = - transport_parsing - ->last_sent_settings[GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE]; + &t->hpack_parser.table, + t->settings[GRPC_ACKED_SETTINGS] + [GRPC_CHTTP2_SETTINGS_HEADER_TABLE_SIZE]); + t->sent_local_settings = 0; } - transport_parsing->parser = grpc_chttp2_settings_parser_parse; - transport_parsing->parser_data = &transport_parsing->simple.settings; + t->parser = grpc_chttp2_settings_parser_parse; + t->parser_data = &t->simple.settings; return GRPC_ERROR_NONE; } -/* -static int is_window_update_legal(int64_t window_update, int64_t window) { - return window + window_update < MAX_WINDOW; -} -*/ - -static grpc_error *parse_frame_slice( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing, - gpr_slice slice, int is_last) { - grpc_chttp2_stream_parsing *stream_parsing = - transport_parsing->incoming_stream; - grpc_error *err = transport_parsing->parser( - exec_ctx, transport_parsing->parser_data, transport_parsing, - stream_parsing, slice, is_last); +static grpc_error *parse_frame_slice(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t, gpr_slice slice, + int is_last) { + grpc_chttp2_stream *s = t->incoming_stream; + grpc_error *err = t->parser(exec_ctx, t->parser_data, t, s, slice, is_last); if (err == GRPC_ERROR_NONE) { - if (stream_parsing) { - grpc_chttp2_list_add_parsing_seen_stream(transport_parsing, - stream_parsing); - } - return GRPC_ERROR_NONE; + return err; } else if (grpc_error_get_int(err, GRPC_ERROR_INT_STREAM_ID, NULL)) { if (grpc_http_trace) { const char *msg = grpc_error_string(err); gpr_log(GPR_ERROR, "%s", msg); grpc_error_free_string(msg); } - grpc_chttp2_parsing_become_skip_parser(exec_ctx, transport_parsing); - if (stream_parsing) { - stream_parsing->forced_close_error = err; + grpc_chttp2_parsing_become_skip_parser(exec_ctx, t); + if (s) { + s->forced_close_error = err; gpr_slice_buffer_add( - &transport_parsing->qbuf, - grpc_chttp2_rst_stream_create(transport_parsing->incoming_stream_id, - GRPC_CHTTP2_PROTOCOL_ERROR, - &stream_parsing->stats.outgoing)); + &t->qbuf, grpc_chttp2_rst_stream_create(t->incoming_stream_id, + GRPC_CHTTP2_PROTOCOL_ERROR, + &s->stats.outgoing)); } else { GRPC_ERROR_UNREF(err); } diff --git a/src/core/ext/transport/chttp2/transport/stream_lists.c b/src/core/ext/transport/chttp2/transport/stream_lists.c index 2eb5f5f632..6d25b3ae57 100644 --- a/src/core/ext/transport/chttp2/transport/stream_lists.c +++ b/src/core/ext/transport/chttp2/transport/stream_lists.c @@ -35,27 +35,6 @@ #include <grpc/support/log.h> -#define TRANSPORT_FROM_GLOBAL(tg) \ - ((grpc_chttp2_transport *)((char *)(tg)-offsetof(grpc_chttp2_transport, \ - global))) - -#define STREAM_FROM_GLOBAL(sg) \ - ((grpc_chttp2_stream *)((char *)(sg)-offsetof(grpc_chttp2_stream, global))) - -#define TRANSPORT_FROM_WRITING(tw) \ - ((grpc_chttp2_transport *)((char *)(tw)-offsetof(grpc_chttp2_transport, \ - writing))) - -#define STREAM_FROM_WRITING(sw) \ - ((grpc_chttp2_stream *)((char *)(sw)-offsetof(grpc_chttp2_stream, writing))) - -#define TRANSPORT_FROM_PARSING(tp) \ - ((grpc_chttp2_transport *)((char *)(tp)-offsetof(grpc_chttp2_transport, \ - parsing))) - -#define STREAM_FROM_PARSING(sp) \ - ((grpc_chttp2_stream *)((char *)(sp)-offsetof(grpc_chttp2_stream, parsing))) - /* core list management */ static int stream_list_empty(grpc_chttp2_transport *t, @@ -139,314 +118,57 @@ static bool stream_list_add(grpc_chttp2_transport *t, grpc_chttp2_stream *s, /* wrappers for specializations */ -bool grpc_chttp2_list_add_writable_stream( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global) { - GPR_ASSERT(stream_global->id != 0); - return stream_list_add(TRANSPORT_FROM_GLOBAL(transport_global), - STREAM_FROM_GLOBAL(stream_global), - GRPC_CHTTP2_LIST_WRITABLE); -} - -int grpc_chttp2_list_pop_writable_stream( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_transport_writing *transport_writing, - grpc_chttp2_stream_global **stream_global, - grpc_chttp2_stream_writing **stream_writing) { - grpc_chttp2_stream *stream; - int r = stream_list_pop(TRANSPORT_FROM_GLOBAL(transport_global), &stream, - GRPC_CHTTP2_LIST_WRITABLE); - if (r != 0) { - *stream_global = &stream->global; - *stream_writing = &stream->writing; - } - return r; -} - -bool grpc_chttp2_list_remove_writable_stream( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global) { - return stream_list_maybe_remove(TRANSPORT_FROM_GLOBAL(transport_global), - STREAM_FROM_GLOBAL(stream_global), - GRPC_CHTTP2_LIST_WRITABLE); -} - -void grpc_chttp2_list_add_writing_stream( - grpc_chttp2_transport_writing *transport_writing, - grpc_chttp2_stream_writing *stream_writing) { - GPR_ASSERT(stream_list_add(TRANSPORT_FROM_WRITING(transport_writing), - STREAM_FROM_WRITING(stream_writing), - GRPC_CHTTP2_LIST_WRITING)); -} - -int grpc_chttp2_list_have_writing_streams( - grpc_chttp2_transport_writing *transport_writing) { - return !stream_list_empty(TRANSPORT_FROM_WRITING(transport_writing), - GRPC_CHTTP2_LIST_WRITING); +bool grpc_chttp2_list_add_writable_stream(grpc_chttp2_transport *t, + grpc_chttp2_stream *s) { + GPR_ASSERT(s->id != 0); + return stream_list_add(t, s, GRPC_CHTTP2_LIST_WRITABLE); } -int grpc_chttp2_list_pop_writing_stream( - grpc_chttp2_transport_writing *transport_writing, - grpc_chttp2_stream_writing **stream_writing) { - grpc_chttp2_stream *stream; - int r = stream_list_pop(TRANSPORT_FROM_WRITING(transport_writing), &stream, - GRPC_CHTTP2_LIST_WRITING); - if (r != 0) { - *stream_writing = &stream->writing; - } - return r; -} - -void grpc_chttp2_list_add_written_stream( - grpc_chttp2_transport_writing *transport_writing, - grpc_chttp2_stream_writing *stream_writing) { - stream_list_add(TRANSPORT_FROM_WRITING(transport_writing), - STREAM_FROM_WRITING(stream_writing), - GRPC_CHTTP2_LIST_WRITTEN); +int grpc_chttp2_list_pop_writable_stream(grpc_chttp2_transport *t, + grpc_chttp2_stream **s) { + return stream_list_pop(t, s, GRPC_CHTTP2_LIST_WRITABLE); } -int grpc_chttp2_list_pop_written_stream( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_transport_writing *transport_writing, - grpc_chttp2_stream_global **stream_global, - grpc_chttp2_stream_writing **stream_writing) { - grpc_chttp2_stream *stream; - int r = stream_list_pop(TRANSPORT_FROM_WRITING(transport_writing), &stream, - GRPC_CHTTP2_LIST_WRITTEN); - if (r != 0) { - *stream_global = &stream->global; - *stream_writing = &stream->writing; - } - return r; +bool grpc_chttp2_list_remove_writable_stream(grpc_chttp2_transport *t, + grpc_chttp2_stream *s) { + return stream_list_maybe_remove(t, s, GRPC_CHTTP2_LIST_WRITABLE); } -void grpc_chttp2_list_add_unannounced_incoming_window_available( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global) { - GPR_ASSERT(stream_global->id != 0); - stream_list_add(TRANSPORT_FROM_GLOBAL(transport_global), - STREAM_FROM_GLOBAL(stream_global), - GRPC_CHTTP2_LIST_UNANNOUNCED_INCOMING_WINDOW_AVAILABLE); +bool grpc_chttp2_list_add_writing_stream(grpc_chttp2_transport *t, + grpc_chttp2_stream *s) { + return stream_list_add(t, s, GRPC_CHTTP2_LIST_WRITING); } -void grpc_chttp2_list_remove_unannounced_incoming_window_available( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global) { - stream_list_maybe_remove( - TRANSPORT_FROM_GLOBAL(transport_global), - STREAM_FROM_GLOBAL(stream_global), - GRPC_CHTTP2_LIST_UNANNOUNCED_INCOMING_WINDOW_AVAILABLE); +int grpc_chttp2_list_have_writing_streams(grpc_chttp2_transport *t) { + return !stream_list_empty(t, GRPC_CHTTP2_LIST_WRITING); } -int grpc_chttp2_list_pop_unannounced_incoming_window_available( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_global **stream_global, - grpc_chttp2_stream_parsing **stream_parsing) { - grpc_chttp2_stream *stream; - int r = - stream_list_pop(TRANSPORT_FROM_GLOBAL(transport_global), &stream, - GRPC_CHTTP2_LIST_UNANNOUNCED_INCOMING_WINDOW_AVAILABLE); - if (r != 0) { - *stream_global = &stream->global; - *stream_parsing = &stream->parsing; - } - return r; +int grpc_chttp2_list_pop_writing_stream(grpc_chttp2_transport *t, + grpc_chttp2_stream **s) { + return stream_list_pop(t, s, GRPC_CHTTP2_LIST_WRITING); } -void grpc_chttp2_list_add_parsing_seen_stream( - grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_parsing *stream_parsing) { - stream_list_add(TRANSPORT_FROM_PARSING(transport_parsing), - STREAM_FROM_PARSING(stream_parsing), - GRPC_CHTTP2_LIST_PARSING_SEEN); +void grpc_chttp2_list_add_waiting_for_concurrency(grpc_chttp2_transport *t, + grpc_chttp2_stream *s) { + stream_list_add(t, s, GRPC_CHTTP2_LIST_WAITING_FOR_CONCURRENCY); } -int grpc_chttp2_list_pop_parsing_seen_stream( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_global **stream_global, - grpc_chttp2_stream_parsing **stream_parsing) { - grpc_chttp2_stream *stream; - int r = stream_list_pop(TRANSPORT_FROM_PARSING(transport_parsing), &stream, - GRPC_CHTTP2_LIST_PARSING_SEEN); - if (r != 0) { - *stream_global = &stream->global; - *stream_parsing = &stream->parsing; - } - return r; +int grpc_chttp2_list_pop_waiting_for_concurrency(grpc_chttp2_transport *t, + grpc_chttp2_stream **s) { + return stream_list_pop(t, s, GRPC_CHTTP2_LIST_WAITING_FOR_CONCURRENCY); } -void grpc_chttp2_list_add_waiting_for_concurrency( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global) { - stream_list_add(TRANSPORT_FROM_GLOBAL(transport_global), - STREAM_FROM_GLOBAL(stream_global), - GRPC_CHTTP2_LIST_WAITING_FOR_CONCURRENCY); +void grpc_chttp2_list_add_stalled_by_transport(grpc_chttp2_transport *t, + grpc_chttp2_stream *s) { + stream_list_add(t, s, GRPC_CHTTP2_LIST_STALLED_BY_TRANSPORT); } -int grpc_chttp2_list_pop_waiting_for_concurrency( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global **stream_global) { - grpc_chttp2_stream *stream; - int r = stream_list_pop(TRANSPORT_FROM_GLOBAL(transport_global), &stream, - GRPC_CHTTP2_LIST_WAITING_FOR_CONCURRENCY); - if (r != 0) { - *stream_global = &stream->global; - } - return r; +int grpc_chttp2_list_pop_stalled_by_transport(grpc_chttp2_transport *t, + grpc_chttp2_stream **s) { + return stream_list_pop(t, s, GRPC_CHTTP2_LIST_STALLED_BY_TRANSPORT); } -void grpc_chttp2_list_add_check_read_ops( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global) { - stream_list_add(TRANSPORT_FROM_GLOBAL(transport_global), - STREAM_FROM_GLOBAL(stream_global), - GRPC_CHTTP2_LIST_CHECK_READ_OPS); -} - -bool grpc_chttp2_list_remove_check_read_ops( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global) { - return stream_list_maybe_remove(TRANSPORT_FROM_GLOBAL(transport_global), - STREAM_FROM_GLOBAL(stream_global), - GRPC_CHTTP2_LIST_CHECK_READ_OPS); -} - -int grpc_chttp2_list_pop_check_read_ops( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global **stream_global) { - grpc_chttp2_stream *stream; - int r = stream_list_pop(TRANSPORT_FROM_GLOBAL(transport_global), &stream, - GRPC_CHTTP2_LIST_CHECK_READ_OPS); - if (r != 0) { - *stream_global = &stream->global; - } - return r; -} - -void grpc_chttp2_list_add_writing_stalled_by_transport( - grpc_chttp2_transport_writing *transport_writing, - grpc_chttp2_stream_writing *stream_writing) { - grpc_chttp2_stream *stream = STREAM_FROM_WRITING(stream_writing); - gpr_log(GPR_DEBUG, "writing stalled %d", stream->global.id); - if (!stream->included[GRPC_CHTTP2_LIST_WRITING_STALLED_BY_TRANSPORT]) { - GRPC_CHTTP2_STREAM_REF(&stream->global, "chttp2_writing_stalled"); - } - stream_list_add(TRANSPORT_FROM_WRITING(transport_writing), stream, - GRPC_CHTTP2_LIST_WRITING_STALLED_BY_TRANSPORT); -} - -bool grpc_chttp2_list_flush_writing_stalled_by_transport( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_writing *transport_writing) { - grpc_chttp2_stream *stream; - bool out = false; - grpc_chttp2_transport *transport = TRANSPORT_FROM_WRITING(transport_writing); - while (stream_list_pop(transport, &stream, - GRPC_CHTTP2_LIST_WRITING_STALLED_BY_TRANSPORT)) { - gpr_log(GPR_DEBUG, "move %d from writing stalled to just stalled", - stream->global.id); - grpc_chttp2_list_add_stalled_by_transport(transport_writing, - &stream->writing); - GRPC_CHTTP2_STREAM_UNREF(exec_ctx, &stream->global, - "chttp2_writing_stalled"); - out = true; - } - return out; -} - -void grpc_chttp2_list_add_stalled_by_transport( - grpc_chttp2_transport_writing *transport_writing, - grpc_chttp2_stream_writing *stream_writing) { - gpr_log(GPR_DEBUG, "stalled %d", stream_writing->id); - stream_list_add(TRANSPORT_FROM_WRITING(transport_writing), - STREAM_FROM_WRITING(stream_writing), - GRPC_CHTTP2_LIST_STALLED_BY_TRANSPORT); -} - -int grpc_chttp2_list_pop_stalled_by_transport( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global **stream_global) { - grpc_chttp2_stream *stream; - int r = stream_list_pop(TRANSPORT_FROM_GLOBAL(transport_global), &stream, - GRPC_CHTTP2_LIST_STALLED_BY_TRANSPORT); - if (r != 0) { - *stream_global = &stream->global; - } - return r; -} - -void grpc_chttp2_list_remove_stalled_by_transport( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global) { - stream_list_maybe_remove(TRANSPORT_FROM_GLOBAL(transport_global), - STREAM_FROM_GLOBAL(stream_global), - GRPC_CHTTP2_LIST_STALLED_BY_TRANSPORT); -} - -void grpc_chttp2_list_add_closed_waiting_for_parsing( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global) { - stream_list_add(TRANSPORT_FROM_GLOBAL(transport_global), - STREAM_FROM_GLOBAL(stream_global), - GRPC_CHTTP2_LIST_CLOSED_WAITING_FOR_PARSING); -} - -int grpc_chttp2_list_pop_closed_waiting_for_parsing( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global **stream_global) { - grpc_chttp2_stream *stream; - int r = stream_list_pop(TRANSPORT_FROM_GLOBAL(transport_global), &stream, - GRPC_CHTTP2_LIST_CLOSED_WAITING_FOR_PARSING); - if (r != 0) { - *stream_global = &stream->global; - } - return r; -} - -void grpc_chttp2_list_add_closed_waiting_for_writing( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global *stream_global) { - stream_list_add(TRANSPORT_FROM_GLOBAL(transport_global), - STREAM_FROM_GLOBAL(stream_global), - GRPC_CHTTP2_LIST_CLOSED_WAITING_FOR_WRITING); -} - -int grpc_chttp2_list_pop_closed_waiting_for_writing( - grpc_chttp2_transport_global *transport_global, - grpc_chttp2_stream_global **stream_global) { - grpc_chttp2_stream *stream; - int r = stream_list_pop(TRANSPORT_FROM_GLOBAL(transport_global), &stream, - GRPC_CHTTP2_LIST_CLOSED_WAITING_FOR_WRITING); - if (r != 0) { - *stream_global = &stream->global; - } - return r; -} - -void grpc_chttp2_register_stream(grpc_chttp2_transport *t, - grpc_chttp2_stream *s) { - stream_list_add_tail(t, s, GRPC_CHTTP2_LIST_ALL_STREAMS); -} - -int grpc_chttp2_unregister_stream(grpc_chttp2_transport *t, - grpc_chttp2_stream *s) { - stream_list_maybe_remove(t, s, GRPC_CHTTP2_LIST_ALL_STREAMS); - return stream_list_empty(t, GRPC_CHTTP2_LIST_ALL_STREAMS); -} - -int grpc_chttp2_has_streams(grpc_chttp2_transport *t) { - return !stream_list_empty(t, GRPC_CHTTP2_LIST_ALL_STREAMS); -} - -void grpc_chttp2_for_all_streams( - grpc_chttp2_transport_global *transport_global, void *user_data, - void (*cb)(grpc_chttp2_transport_global *transport_global, void *user_data, - grpc_chttp2_stream_global *stream_global)) { - grpc_chttp2_stream *s; - grpc_chttp2_transport *t = TRANSPORT_FROM_GLOBAL(transport_global); - for (s = t->lists[GRPC_CHTTP2_LIST_ALL_STREAMS].head; s != NULL; - s = s->links[GRPC_CHTTP2_LIST_ALL_STREAMS].next) { - cb(transport_global, user_data, &s->global); - } +void grpc_chttp2_list_remove_stalled_by_transport(grpc_chttp2_transport *t, + grpc_chttp2_stream *s) { + stream_list_maybe_remove(t, s, GRPC_CHTTP2_LIST_STALLED_BY_TRANSPORT); } diff --git a/src/core/ext/transport/chttp2/transport/stream_map.c b/src/core/ext/transport/chttp2/transport/stream_map.c index f70791c422..bd07412274 100644 --- a/src/core/ext/transport/chttp2/transport/stream_map.c +++ b/src/core/ext/transport/chttp2/transport/stream_map.c @@ -77,6 +77,7 @@ void grpc_chttp2_stream_map_add(grpc_chttp2_stream_map *map, uint32_t key, GPR_ASSERT(count == 0 || keys[count - 1] < key); GPR_ASSERT(value); + GPR_ASSERT(grpc_chttp2_stream_map_find(map, key) == NULL); if (count == capacity) { if (map->free > capacity / 4) { @@ -170,6 +171,7 @@ void *grpc_chttp2_stream_map_delete(grpc_chttp2_stream_map *map, uint32_t key) { if (map->free == map->count) { map->free = map->count = 0; } + GPR_ASSERT(grpc_chttp2_stream_map_find(map, key) == NULL); } return out; } diff --git a/src/core/ext/transport/chttp2/transport/writing.c b/src/core/ext/transport/chttp2/transport/writing.c index 311b26e354..bc490569b7 100644 --- a/src/core/ext/transport/chttp2/transport/writing.c +++ b/src/core/ext/transport/chttp2/transport/writing.c @@ -40,346 +40,215 @@ #include "src/core/ext/transport/chttp2/transport/http2_errors.h" #include "src/core/lib/profiling/timers.h" -static void finalize_outbuf(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_writing *transport_writing); +static void add_to_write_list(grpc_chttp2_write_cb **list, + grpc_chttp2_write_cb *cb) { + cb->next = *list; + *list = cb; +} -int grpc_chttp2_unlocking_check_writes( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_global *transport_global, - grpc_chttp2_transport_writing *transport_writing) { - grpc_chttp2_stream_global *stream_global; - grpc_chttp2_stream_writing *stream_writing; +static void finish_write_cb(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, + grpc_chttp2_stream *s, grpc_chttp2_write_cb *cb, + grpc_error *error) { + grpc_chttp2_complete_closure_step(exec_ctx, t, s, &cb->closure, error, + "finish_write_cb"); + cb->next = t->write_cb_pool; + t->write_cb_pool = cb; +} - GPR_TIMER_BEGIN("grpc_chttp2_unlocking_check_writes", 0); +static void update_list(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, + grpc_chttp2_stream *s, size_t send_bytes, + grpc_chttp2_write_cb **list, grpc_error *error) { + grpc_chttp2_write_cb *cb = *list; + *list = NULL; + while (cb) { + grpc_chttp2_write_cb *next = cb->next; + if (cb->call_at_byte <= send_bytes) { + finish_write_cb(exec_ctx, t, s, cb, GRPC_ERROR_REF(error)); + } else { + cb->call_at_byte -= send_bytes; + add_to_write_list(list, cb); + } + cb = next; + } +} - transport_writing->max_frame_size = - transport_global->settings[GRPC_ACKED_SETTINGS] - [GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE]; +bool grpc_chttp2_begin_write(grpc_exec_ctx *exec_ctx, + grpc_chttp2_transport *t) { + grpc_chttp2_stream *s; - /* simple writes are queued to qbuf, and flushed here */ - gpr_slice_buffer_swap(&transport_global->qbuf, &transport_writing->outbuf); - GPR_ASSERT(transport_global->qbuf.count == 0); + GPR_TIMER_BEGIN("grpc_chttp2_begin_write", 0); - grpc_chttp2_hpack_compressor_set_max_table_size( - &transport_writing->hpack_compressor, - transport_global->settings[GRPC_PEER_SETTINGS] - [GRPC_CHTTP2_SETTINGS_HEADER_TABLE_SIZE]); - - if (transport_global->dirtied_local_settings && - !transport_global->sent_local_settings) { + if (t->dirtied_local_settings && !t->sent_local_settings) { gpr_slice_buffer_add( - &transport_writing->outbuf, + &t->outbuf, grpc_chttp2_settings_create( - transport_global->settings[GRPC_SENT_SETTINGS], - transport_global->settings[GRPC_LOCAL_SETTINGS], - transport_global->force_send_settings, GRPC_CHTTP2_NUM_SETTINGS)); - transport_global->force_send_settings = 0; - transport_global->dirtied_local_settings = 0; - transport_global->sent_local_settings = 1; + t->settings[GRPC_SENT_SETTINGS], t->settings[GRPC_LOCAL_SETTINGS], + t->force_send_settings, GRPC_CHTTP2_NUM_SETTINGS)); + t->force_send_settings = 0; + t->dirtied_local_settings = 0; + t->sent_local_settings = 1; } - GRPC_CHTTP2_FLOW_MOVE_TRANSPORT("write", transport_writing, outgoing_window, - transport_global, outgoing_window); - if (transport_writing->outgoing_window > 0) { - while (grpc_chttp2_list_pop_stalled_by_transport(transport_global, - &stream_global)) { - grpc_chttp2_become_writable(exec_ctx, transport_global, stream_global, - false, "transport.read_flow_control"); + /* simple writes are queued to qbuf, and flushed here */ + gpr_slice_buffer_move_into(&t->qbuf, &t->outbuf); + GPR_ASSERT(t->qbuf.count == 0); + + grpc_chttp2_hpack_compressor_set_max_table_size( + &t->hpack_compressor, + t->settings[GRPC_PEER_SETTINGS][GRPC_CHTTP2_SETTINGS_HEADER_TABLE_SIZE]); + + if (t->outgoing_window > 0) { + while (grpc_chttp2_list_pop_stalled_by_transport(t, &s)) { + grpc_chttp2_become_writable(exec_ctx, t, s, false, + "transport.read_flow_control"); } } /* for each grpc_chttp2_stream that's become writable, frame it's data (according to available window sizes) and add to the output buffer */ - while (grpc_chttp2_list_pop_writable_stream( - transport_global, transport_writing, &stream_global, &stream_writing)) { - bool sent_initial_metadata = stream_writing->sent_initial_metadata; - bool become_writable = false; - - stream_writing->id = stream_global->id; - stream_writing->read_closed = stream_global->read_closed; + while (grpc_chttp2_list_pop_writable_stream(t, &s)) { + bool sent_initial_metadata = s->sent_initial_metadata; + bool now_writing = false; - GRPC_CHTTP2_FLOW_MOVE_STREAM("write", transport_writing, stream_writing, - outgoing_window, stream_global, - outgoing_window); + GRPC_CHTTP2_IF_TRACING(gpr_log( + GPR_DEBUG, "W:%p %s[%d] im-(sent,send)=(%d,%d) announce=%d", t, + t->is_client ? "CLIENT" : "SERVER", s->id, sent_initial_metadata, + s->send_initial_metadata != NULL, s->announce_window)); - if (!sent_initial_metadata && stream_global->send_initial_metadata) { - stream_writing->send_initial_metadata = - stream_global->send_initial_metadata; - stream_global->send_initial_metadata = NULL; - become_writable = true; + /* send initial metadata if it's available */ + if (!sent_initial_metadata && s->send_initial_metadata) { + grpc_chttp2_encode_header( + &t->hpack_compressor, s->id, s->send_initial_metadata, 0, + t->settings[GRPC_ACKED_SETTINGS][GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE], + &s->stats.outgoing, &t->outbuf); + s->send_initial_metadata = NULL; + s->sent_initial_metadata = true; sent_initial_metadata = true; + now_writing = true; + } + /* send any window updates */ + if (s->announce_window > 0) { + uint32_t announce = s->announce_window; + gpr_slice_buffer_add(&t->outbuf, + grpc_chttp2_window_update_create( + s->id, s->announce_window, &s->stats.outgoing)); + GRPC_CHTTP2_FLOW_DEBIT_STREAM("write", t, s, announce_window, announce); } if (sent_initial_metadata) { - if (stream_global->send_message != NULL) { - gpr_slice hdr = gpr_slice_malloc(5); - uint8_t *p = GPR_SLICE_START_PTR(hdr); - uint32_t len = stream_global->send_message->length; - GPR_ASSERT(stream_writing->send_message == NULL); - p[0] = (stream_global->send_message->flags & - GRPC_WRITE_INTERNAL_COMPRESS) != 0; - p[1] = (uint8_t)(len >> 24); - p[2] = (uint8_t)(len >> 16); - p[3] = (uint8_t)(len >> 8); - p[4] = (uint8_t)(len); - gpr_slice_buffer_add(&stream_writing->flow_controlled_buffer, hdr); - if (stream_global->send_message->length > 0) { - stream_writing->send_message = stream_global->send_message; - } else { - stream_writing->send_message = NULL; + /* send any body bytes, if allowed by flow control */ + if (s->flow_controlled_buffer.length > 0) { + uint32_t max_outgoing = + (uint32_t)GPR_MIN(t->settings[GRPC_ACKED_SETTINGS] + [GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE], + GPR_MIN(s->outgoing_window, t->outgoing_window)); + if (max_outgoing > 0) { + uint32_t send_bytes = + (uint32_t)GPR_MIN(max_outgoing, s->flow_controlled_buffer.length); + bool is_last_data_frame = + s->fetching_send_message == NULL && + send_bytes == s->flow_controlled_buffer.length; + bool is_last_frame = + is_last_data_frame && s->send_trailing_metadata != NULL && + grpc_metadata_batch_is_empty(s->send_trailing_metadata); + grpc_chttp2_encode_data(s->id, &s->flow_controlled_buffer, send_bytes, + is_last_frame, &s->stats.outgoing, + &t->outbuf); + GRPC_CHTTP2_FLOW_DEBIT_STREAM("write", t, s, outgoing_window, + send_bytes); + GRPC_CHTTP2_FLOW_DEBIT_TRANSPORT("write", t, outgoing_window, + send_bytes); + if (is_last_frame) { + s->send_trailing_metadata = NULL; + s->sent_trailing_metadata = true; + if (!t->is_client && !s->read_closed) { + gpr_slice_buffer_add(&t->outbuf, grpc_chttp2_rst_stream_create( + s->id, GRPC_CHTTP2_NO_ERROR, + &s->stats.outgoing)); + } + } + s->sending_bytes += send_bytes; + now_writing = true; + if (s->flow_controlled_buffer.length > 0) { + GRPC_CHTTP2_STREAM_REF(s, "chttp2_writing:fork"); + grpc_chttp2_list_add_writable_stream(t, s); + } + } else if (t->outgoing_window == 0) { + grpc_chttp2_list_add_stalled_by_transport(t, s); + now_writing = true; } - stream_writing->stream_fetched = 0; - stream_global->send_message = NULL; } - if ((stream_writing->send_message != NULL || - stream_writing->flow_controlled_buffer.length > 0) && - stream_writing->outgoing_window > 0) { - if (transport_writing->outgoing_window > 0) { - become_writable = true; - } else { - grpc_chttp2_list_add_stalled_by_transport(transport_writing, - stream_writing); + if (s->send_trailing_metadata != NULL && + s->fetching_send_message == NULL && + s->flow_controlled_buffer.length == 0) { + grpc_chttp2_encode_header( + &t->hpack_compressor, s->id, s->send_trailing_metadata, true, + t->settings[GRPC_ACKED_SETTINGS] + [GRPC_CHTTP2_SETTINGS_MAX_FRAME_SIZE], + &s->stats.outgoing, &t->outbuf); + s->send_trailing_metadata = NULL; + s->sent_trailing_metadata = true; + if (!t->is_client && !s->read_closed) { + gpr_slice_buffer_add( + &t->outbuf, grpc_chttp2_rst_stream_create( + s->id, GRPC_CHTTP2_NO_ERROR, &s->stats.outgoing)); } + now_writing = true; } - if (stream_global->send_trailing_metadata) { - stream_writing->send_trailing_metadata = - stream_global->send_trailing_metadata; - stream_global->send_trailing_metadata = NULL; - become_writable = true; - } - } - - if (!stream_global->read_closed && - stream_global->unannounced_incoming_window_for_writing > 1024) { - GRPC_CHTTP2_FLOW_MOVE_STREAM("write", transport_global, stream_writing, - announce_window, stream_global, - unannounced_incoming_window_for_writing); - become_writable = true; } - if (become_writable) { - grpc_chttp2_list_add_writing_stream(transport_writing, stream_writing); + if (now_writing) { + if (!grpc_chttp2_list_add_writing_stream(t, s)) { + /* already in writing list: drop ref */ + GRPC_CHTTP2_STREAM_UNREF(exec_ctx, s, "chttp2_writing:already_writing"); + } } else { - GRPC_CHTTP2_STREAM_UNREF(exec_ctx, stream_global, "chttp2_writing"); + GRPC_CHTTP2_STREAM_UNREF(exec_ctx, s, "chttp2_writing:no_write"); } } /* if the grpc_chttp2_transport is ready to send a window update, do so here also; 3/4 is a magic number that will likely get tuned soon */ - if (transport_global->announce_incoming_window > 0) { - uint32_t announced = (uint32_t)GPR_MIN( - transport_global->announce_incoming_window, UINT32_MAX); - GRPC_CHTTP2_FLOW_DEBIT_TRANSPORT("write", transport_global, - announce_incoming_window, announced); + if (t->announce_incoming_window > 0) { + uint32_t announced = + (uint32_t)GPR_MIN(t->announce_incoming_window, UINT32_MAX); + GRPC_CHTTP2_FLOW_DEBIT_TRANSPORT("write", t, announce_incoming_window, + announced); grpc_transport_one_way_stats throwaway_stats; - gpr_slice_buffer_add( - &transport_writing->outbuf, - grpc_chttp2_window_update_create(0, announced, &throwaway_stats)); - } - - GPR_TIMER_END("grpc_chttp2_unlocking_check_writes", 0); - - return transport_writing->outbuf.count > 0 || - grpc_chttp2_list_have_writing_streams(transport_writing); -} - -void grpc_chttp2_perform_writes( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_writing *transport_writing, - grpc_endpoint *endpoint) { - GPR_ASSERT(transport_writing->outbuf.count > 0 || - grpc_chttp2_list_have_writing_streams(transport_writing)); - - finalize_outbuf(exec_ctx, transport_writing); - - GPR_ASSERT(endpoint); - - if (transport_writing->outbuf.count > 0) { - grpc_endpoint_write(exec_ctx, endpoint, &transport_writing->outbuf, - &transport_writing->done_cb); - } else { - grpc_exec_ctx_sched(exec_ctx, &transport_writing->done_cb, GRPC_ERROR_NONE, - NULL); + gpr_slice_buffer_add(&t->outbuf, grpc_chttp2_window_update_create( + 0, announced, &throwaway_stats)); } -} - -static void finalize_outbuf(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_writing *transport_writing) { - grpc_chttp2_stream_writing *stream_writing; - GPR_TIMER_BEGIN("finalize_outbuf", 0); - - bool is_first_data_frame = true; - while ( - grpc_chttp2_list_pop_writing_stream(transport_writing, &stream_writing)) { - uint32_t max_outgoing = - (uint32_t)GPR_MIN(transport_writing->max_frame_size, - GPR_MIN(stream_writing->outgoing_window, - transport_writing->outgoing_window)); - /* send initial metadata if it's available */ - if (stream_writing->send_initial_metadata != NULL) { - grpc_chttp2_encode_header( - &transport_writing->hpack_compressor, stream_writing->id, - stream_writing->send_initial_metadata, 0, - transport_writing->max_frame_size, &stream_writing->stats, - &transport_writing->outbuf); - stream_writing->send_initial_metadata = NULL; - stream_writing->sent_initial_metadata = 1; - } - /* send any window updates */ - if (stream_writing->announce_window > 0 && - stream_writing->send_initial_metadata == NULL) { - uint32_t announce = stream_writing->announce_window; - gpr_slice_buffer_add( - &transport_writing->outbuf, - grpc_chttp2_window_update_create(stream_writing->id, - stream_writing->announce_window, - &stream_writing->stats)); - GRPC_CHTTP2_FLOW_DEBIT_STREAM("write", transport_writing, stream_writing, - announce_window, announce); - stream_writing->announce_window = 0; - } - /* fetch any body bytes */ - while (!stream_writing->fetching && stream_writing->send_message && - stream_writing->flow_controlled_buffer.length < max_outgoing && - stream_writing->stream_fetched < - stream_writing->send_message->length) { - if (grpc_byte_stream_next(exec_ctx, stream_writing->send_message, - &stream_writing->fetching_slice, max_outgoing, - &stream_writing->finished_fetch)) { - stream_writing->stream_fetched += - GPR_SLICE_LENGTH(stream_writing->fetching_slice); - if (stream_writing->stream_fetched == - stream_writing->send_message->length) { - stream_writing->send_message = NULL; - } - gpr_slice_buffer_add(&stream_writing->flow_controlled_buffer, - stream_writing->fetching_slice); - } else { - stream_writing->fetching = 1; - } - } - /* send any body bytes */ - if (stream_writing->flow_controlled_buffer.length > 0) { - if (max_outgoing > 0) { - uint32_t send_bytes = (uint32_t)GPR_MIN( - max_outgoing, stream_writing->flow_controlled_buffer.length); - int is_last_data_frame = - stream_writing->send_message == NULL && - send_bytes == stream_writing->flow_controlled_buffer.length; - int is_last_frame = is_last_data_frame && - stream_writing->send_trailing_metadata != NULL && - grpc_metadata_batch_is_empty( - stream_writing->send_trailing_metadata); - grpc_chttp2_encode_data( - stream_writing->id, &stream_writing->flow_controlled_buffer, - send_bytes, is_last_frame, &stream_writing->stats, - &transport_writing->outbuf); - if (is_first_data_frame) { - /* TODO(dgq): this is a hack. It'll be fix in a future refactoring */ - stream_writing->stats.data_bytes -= 5; /* discount grpc framing */ - is_first_data_frame = false; - } - GRPC_CHTTP2_FLOW_DEBIT_STREAM("write", transport_writing, - stream_writing, outgoing_window, - send_bytes); - GRPC_CHTTP2_FLOW_DEBIT_TRANSPORT("write", transport_writing, - outgoing_window, send_bytes); - if (is_last_frame) { - stream_writing->send_trailing_metadata = NULL; - stream_writing->sent_trailing_metadata = 1; - } - if (is_last_data_frame) { - GPR_ASSERT(stream_writing->send_message == NULL); - stream_writing->sent_message = 1; - } - } else if (transport_writing->outgoing_window == 0) { - grpc_chttp2_list_add_writing_stalled_by_transport(transport_writing, - stream_writing); - grpc_chttp2_list_add_written_stream(transport_writing, stream_writing); - } - } - /* send trailing metadata if it's available and we're ready for it */ - if (stream_writing->send_message == NULL && - stream_writing->flow_controlled_buffer.length == 0 && - stream_writing->send_trailing_metadata != NULL) { - if (grpc_metadata_batch_is_empty( - stream_writing->send_trailing_metadata)) { - grpc_chttp2_encode_data( - stream_writing->id, &stream_writing->flow_controlled_buffer, 0, 1, - &stream_writing->stats, &transport_writing->outbuf); - } else { - grpc_chttp2_encode_header( - &transport_writing->hpack_compressor, stream_writing->id, - stream_writing->send_trailing_metadata, 1, - transport_writing->max_frame_size, &stream_writing->stats, - &transport_writing->outbuf); - } - if (!transport_writing->is_client && !stream_writing->read_closed) { - gpr_slice_buffer_add(&transport_writing->outbuf, - grpc_chttp2_rst_stream_create( - stream_writing->id, GRPC_CHTTP2_NO_ERROR, - &stream_writing->stats)); - } - stream_writing->send_trailing_metadata = NULL; - stream_writing->sent_trailing_metadata = 1; - } - /* if there's more to write, then loop, otherwise prepare to finish the - * write */ - if ((stream_writing->flow_controlled_buffer.length > 0 || - (stream_writing->send_message && !stream_writing->fetching)) && - stream_writing->outgoing_window > 0) { - if (transport_writing->outgoing_window > 0) { - grpc_chttp2_list_add_writing_stream(transport_writing, stream_writing); - } else { - grpc_chttp2_list_add_writing_stalled_by_transport(transport_writing, - stream_writing); - grpc_chttp2_list_add_written_stream(transport_writing, stream_writing); - } - } else { - grpc_chttp2_list_add_written_stream(transport_writing, stream_writing); - } - } + GPR_TIMER_END("grpc_chttp2_begin_write", 0); - GPR_TIMER_END("finalize_outbuf", 0); + return t->outbuf.count > 0; } -void grpc_chttp2_cleanup_writing( - grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_global *transport_global, - grpc_chttp2_transport_writing *transport_writing) { - grpc_chttp2_stream_writing *stream_writing; - grpc_chttp2_stream_global *stream_global; +void grpc_chttp2_end_write(grpc_exec_ctx *exec_ctx, grpc_chttp2_transport *t, + grpc_error *error) { + GPR_TIMER_BEGIN("grpc_chttp2_end_write", 0); + grpc_chttp2_stream *s; - if (grpc_chttp2_list_flush_writing_stalled_by_transport(exec_ctx, - transport_writing)) { - grpc_chttp2_initiate_write(exec_ctx, transport_global, false, - "resume_stalled_stream"); - } - - while (grpc_chttp2_list_pop_written_stream( - transport_global, transport_writing, &stream_global, &stream_writing)) { - if (stream_writing->sent_initial_metadata) { + while (grpc_chttp2_list_pop_writing_stream(t, &s)) { + if (s->sent_initial_metadata) { grpc_chttp2_complete_closure_step( - exec_ctx, transport_global, stream_global, - &stream_global->send_initial_metadata_finished, GRPC_ERROR_NONE); + exec_ctx, t, s, &s->send_initial_metadata_finished, + GRPC_ERROR_REF(error), "send_initial_metadata_finished"); } - grpc_transport_move_one_way_stats(&stream_writing->stats, - &stream_global->stats.outgoing); - if (stream_writing->sent_message) { - GPR_ASSERT(stream_writing->send_message == NULL); - grpc_chttp2_complete_closure_step( - exec_ctx, transport_global, stream_global, - &stream_global->send_message_finished, GRPC_ERROR_NONE); - stream_writing->sent_message = 0; + if (s->sending_bytes != 0) { + update_list(exec_ctx, t, s, s->sending_bytes, &s->on_write_finished_cbs, + GRPC_ERROR_REF(error)); + s->sending_bytes = 0; } - if (stream_writing->sent_trailing_metadata) { + if (s->sent_trailing_metadata) { grpc_chttp2_complete_closure_step( - exec_ctx, transport_global, stream_global, - &stream_global->send_trailing_metadata_finished, GRPC_ERROR_NONE); - } - if (stream_writing->sent_trailing_metadata) { - grpc_chttp2_mark_stream_closed(exec_ctx, transport_global, stream_global, - !transport_global->is_client, 1, - GRPC_ERROR_NONE); + exec_ctx, t, s, &s->send_trailing_metadata_finished, + GRPC_ERROR_REF(error), "send_trailing_metadata_finished"); + grpc_chttp2_mark_stream_closed(exec_ctx, t, s, !t->is_client, 1, + GRPC_ERROR_REF(error)); } - GRPC_CHTTP2_STREAM_UNREF(exec_ctx, stream_global, "chttp2_writing"); + GRPC_CHTTP2_STREAM_UNREF(exec_ctx, s, "chttp2_writing:end"); } - gpr_slice_buffer_reset_and_unref(&transport_writing->outbuf); + gpr_slice_buffer_reset_and_unref(&t->outbuf); + GRPC_ERROR_UNREF(error); + GPR_TIMER_END("grpc_chttp2_end_write", 0); } diff --git a/src/core/lib/channel/channel_stack.c b/src/core/lib/channel/channel_stack.c index 98f304f2da..0655b9353f 100644 --- a/src/core/lib/channel/channel_stack.c +++ b/src/core/lib/channel/channel_stack.c @@ -32,6 +32,7 @@ */ #include "src/core/lib/channel/channel_stack.h" +#include <grpc/support/alloc.h> #include <grpc/support/log.h> #include <stdlib.h> @@ -270,21 +271,27 @@ grpc_call_stack *grpc_call_stack_from_top_element(grpc_call_element *elem) { sizeof(grpc_call_stack))); } +static void destroy_op(grpc_exec_ctx *exec_ctx, void *op, grpc_error *error) { + gpr_free(op); +} + void grpc_call_element_send_cancel(grpc_exec_ctx *exec_ctx, grpc_call_element *cur_elem) { - grpc_transport_stream_op op; - memset(&op, 0, sizeof(op)); - op.cancel_error = GRPC_ERROR_CANCELLED; - grpc_call_next_op(exec_ctx, cur_elem, &op); + grpc_transport_stream_op *op = gpr_malloc(sizeof(*op)); + memset(op, 0, sizeof(*op)); + op->cancel_error = GRPC_ERROR_CANCELLED; + op->on_complete = grpc_closure_create(destroy_op, op); + grpc_call_next_op(exec_ctx, cur_elem, op); } void grpc_call_element_send_cancel_with_message(grpc_exec_ctx *exec_ctx, grpc_call_element *cur_elem, grpc_status_code status, gpr_slice *optional_message) { - grpc_transport_stream_op op; - memset(&op, 0, sizeof(op)); - grpc_transport_stream_op_add_cancellation_with_message(&op, status, + grpc_transport_stream_op *op = gpr_malloc(sizeof(*op)); + memset(op, 0, sizeof(*op)); + op->on_complete = grpc_closure_create(destroy_op, op); + grpc_transport_stream_op_add_cancellation_with_message(op, status, optional_message); - grpc_call_next_op(exec_ctx, cur_elem, &op); + grpc_call_next_op(exec_ctx, cur_elem, op); } diff --git a/src/core/lib/channel/compress_filter.c b/src/core/lib/channel/compress_filter.c index 134180e619..0981d59f63 100644 --- a/src/core/lib/channel/compress_filter.c +++ b/src/core/lib/channel/compress_filter.c @@ -60,7 +60,7 @@ typedef struct call_data { /** If true, contents of \a compression_algorithm are authoritative */ int has_compression_algorithm; - grpc_transport_stream_op send_op; + grpc_transport_stream_op *send_op; uint32_t send_length; uint32_t send_flags; gpr_slice incoming_slice; @@ -199,11 +199,11 @@ static void finish_send_message(grpc_exec_ctx *exec_ctx, grpc_slice_buffer_stream_init(&calld->replacement_stream, &calld->slices, calld->send_flags); - calld->send_op.send_message = &calld->replacement_stream.base; - calld->post_send = calld->send_op.on_complete; - calld->send_op.on_complete = &calld->send_done; + calld->send_op->send_message = &calld->replacement_stream.base; + calld->post_send = calld->send_op->on_complete; + calld->send_op->on_complete = &calld->send_done; - grpc_call_next_op(exec_ctx, elem, &calld->send_op); + grpc_call_next_op(exec_ctx, elem, calld->send_op); } static void got_slice(grpc_exec_ctx *exec_ctx, void *elemp, grpc_error *error) { @@ -220,7 +220,7 @@ static void got_slice(grpc_exec_ctx *exec_ctx, void *elemp, grpc_error *error) { static void continue_send_message(grpc_exec_ctx *exec_ctx, grpc_call_element *elem) { call_data *calld = elem->call_data; - while (grpc_byte_stream_next(exec_ctx, calld->send_op.send_message, + while (grpc_byte_stream_next(exec_ctx, calld->send_op->send_message, &calld->incoming_slice, ~(size_t)0, &calld->got_slice)) { gpr_slice_buffer_add(&calld->slices, calld->incoming_slice); @@ -243,7 +243,7 @@ static void compress_start_transport_stream_op(grpc_exec_ctx *exec_ctx, } if (op->send_message != NULL && !skip_compression(elem) && 0 == (op->send_message->flags & GRPC_WRITE_NO_COMPRESS)) { - calld->send_op = *op; + calld->send_op = op; calld->send_length = op->send_message->length; calld->send_flags = op->send_message->flags; continue_send_message(exec_ctx, elem); diff --git a/src/core/lib/iomgr/closure.c b/src/core/lib/iomgr/closure.c index 0b6c3b2539..2c84e82aca 100644 --- a/src/core/lib/iomgr/closure.c +++ b/src/core/lib/iomgr/closure.c @@ -35,19 +35,25 @@ #include <grpc/support/alloc.h> +#include "src/core/lib/profiling/timers.h" + void grpc_closure_init(grpc_closure *closure, grpc_iomgr_cb_func cb, void *cb_arg) { closure->cb = cb; closure->cb_arg = cb_arg; } +void grpc_closure_list_init(grpc_closure_list *closure_list) { + closure_list->head = closure_list->tail = NULL; +} + void grpc_closure_list_append(grpc_closure_list *closure_list, grpc_closure *closure, grpc_error *error) { if (closure == NULL) { GRPC_ERROR_UNREF(error); return; } - closure->error = error; + closure->error_data.error = error; closure->next_data.next = NULL; if (closure_list->head == NULL) { closure_list->head = closure; @@ -60,8 +66,8 @@ void grpc_closure_list_append(grpc_closure_list *closure_list, void grpc_closure_list_fail_all(grpc_closure_list *list, grpc_error *forced_failure) { for (grpc_closure *c = list->head; c != NULL; c = c->next_data.next) { - if (c->error == GRPC_ERROR_NONE) { - c->error = GRPC_ERROR_REF(forced_failure); + if (c->error_data.error == GRPC_ERROR_NONE) { + c->error_data.error = GRPC_ERROR_REF(forced_failure); } } GRPC_ERROR_UNREF(forced_failure); @@ -106,3 +112,11 @@ grpc_closure *grpc_closure_create(grpc_iomgr_cb_func cb, void *cb_arg) { grpc_closure_init(&wc->wrapper, closure_wrapper, wc); return &wc->wrapper; } + +void grpc_closure_run(grpc_exec_ctx *exec_ctx, grpc_closure *c, + grpc_error *error) { + GPR_TIMER_BEGIN("grpc_closure_run", 0); + c->cb(exec_ctx, c->cb_arg, error); + GRPC_ERROR_UNREF(error); + GPR_TIMER_END("grpc_closure_run", 0); +} diff --git a/src/core/lib/iomgr/closure.h b/src/core/lib/iomgr/closure.h index 08e59a168e..2b4b271eaa 100644 --- a/src/core/lib/iomgr/closure.h +++ b/src/core/lib/iomgr/closure.h @@ -37,6 +37,7 @@ #include <grpc/support/port_platform.h> #include <stdbool.h> #include "src/core/lib/iomgr/error.h" +#include "src/core/lib/support/mpscq.h" struct grpc_closure; typedef struct grpc_closure grpc_closure; @@ -60,6 +61,14 @@ typedef void (*grpc_iomgr_cb_func)(grpc_exec_ctx *exec_ctx, void *arg, /** A closure over a grpc_iomgr_cb_func. */ struct grpc_closure { + /** Once queued, next indicates the next queued closure; before then, scratch + * space */ + union { + grpc_closure *next; + gpr_mpscq_node atm_next; + uintptr_t scratch; + } next_data; + /** Bound callback. */ grpc_iomgr_cb_func cb; @@ -67,14 +76,10 @@ struct grpc_closure { void *cb_arg; /** Once queued, the result of the closure. Before then: scratch space */ - grpc_error *error; - - /** Once queued, next indicates the next queued closure; before then, scratch - * space */ union { - grpc_closure *next; + grpc_error *error; uintptr_t scratch; - } next_data; + } error_data; }; /** Initializes \a closure with \a cb and \a cb_arg. */ @@ -87,6 +92,8 @@ grpc_closure *grpc_closure_create(grpc_iomgr_cb_func cb, void *cb_arg); #define GRPC_CLOSURE_LIST_INIT \ { NULL, NULL } +void grpc_closure_list_init(grpc_closure_list *list); + /** add \a closure to the end of \a list and set \a closure's result to \a error */ void grpc_closure_list_append(grpc_closure_list *list, grpc_closure *closure, @@ -102,4 +109,10 @@ void grpc_closure_list_move(grpc_closure_list *src, grpc_closure_list *dst); /** return whether \a list is empty. */ bool grpc_closure_list_empty(grpc_closure_list list); +/** Run a closure directly. Caller ensures that no locks are being held above. + * Note that calling this at the end of a closure callback function itself is + * by definition safe. */ +void grpc_closure_run(grpc_exec_ctx *exec_ctx, grpc_closure *closure, + grpc_error *error); + #endif /* GRPC_CORE_LIB_IOMGR_CLOSURE_H */ diff --git a/src/core/lib/iomgr/combiner.c b/src/core/lib/iomgr/combiner.c new file mode 100644 index 0000000000..48806abc38 --- /dev/null +++ b/src/core/lib/iomgr/combiner.c @@ -0,0 +1,324 @@ +/* + * + * Copyright 2016, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include "src/core/lib/iomgr/combiner.h" + +#include <string.h> + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> + +#include "src/core/lib/iomgr/workqueue.h" +#include "src/core/lib/profiling/timers.h" + +int grpc_combiner_trace = 0; + +#define GRPC_COMBINER_TRACE(fn) \ + do { \ + if (grpc_combiner_trace) { \ + fn; \ + } \ + } while (0) + +struct grpc_combiner { + grpc_combiner *next_combiner_on_this_exec_ctx; + grpc_workqueue *optional_workqueue; + gpr_mpscq queue; + // state is: + // lower bit - zero if orphaned + // other bits - number of items queued on the lock + gpr_atm state; + // number of elements in the list that are covered by a poller: if >0, we can + // offload safely + gpr_atm covered_by_poller; + bool time_to_execute_final_list; + bool final_list_covered_by_poller; + grpc_closure_list final_list; + grpc_closure offload; +}; + +static void offload(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error); + +typedef struct { + grpc_error *error; + bool covered_by_poller; +} error_data; + +static uintptr_t pack_error_data(error_data d) { + return ((uintptr_t)d.error) | (d.covered_by_poller ? 1 : 0); +} + +static error_data unpack_error_data(uintptr_t p) { + return (error_data){(grpc_error *)(p & ~(uintptr_t)1), p & 1}; +} + +static bool is_covered_by_poller(grpc_combiner *lock) { + return lock->final_list_covered_by_poller || + gpr_atm_acq_load(&lock->covered_by_poller) > 0; +} + +grpc_combiner *grpc_combiner_create(grpc_workqueue *optional_workqueue) { + grpc_combiner *lock = gpr_malloc(sizeof(*lock)); + lock->next_combiner_on_this_exec_ctx = NULL; + lock->time_to_execute_final_list = false; + lock->optional_workqueue = optional_workqueue; + lock->final_list_covered_by_poller = false; + gpr_atm_no_barrier_store(&lock->state, 1); + gpr_atm_no_barrier_store(&lock->covered_by_poller, 0); + gpr_mpscq_init(&lock->queue); + grpc_closure_list_init(&lock->final_list); + grpc_closure_init(&lock->offload, offload, lock); + GRPC_COMBINER_TRACE(gpr_log(GPR_DEBUG, "C:%p create", lock)); + return lock; +} + +static void really_destroy(grpc_exec_ctx *exec_ctx, grpc_combiner *lock) { + GRPC_COMBINER_TRACE(gpr_log(GPR_DEBUG, "C:%p really_destroy", lock)); + GPR_ASSERT(gpr_atm_no_barrier_load(&lock->state) == 0); + gpr_mpscq_destroy(&lock->queue); + GRPC_WORKQUEUE_UNREF(exec_ctx, lock->optional_workqueue, "combiner"); + gpr_free(lock); +} + +void grpc_combiner_destroy(grpc_exec_ctx *exec_ctx, grpc_combiner *lock) { + gpr_atm old_state = gpr_atm_full_fetch_add(&lock->state, -1); + GRPC_COMBINER_TRACE(gpr_log( + GPR_DEBUG, "C:%p really_destroy old_state=%" PRIdPTR, lock, old_state)); + if (old_state == 1) { + really_destroy(exec_ctx, lock); + } +} + +static void push_last_on_exec_ctx(grpc_exec_ctx *exec_ctx, + grpc_combiner *lock) { + lock->next_combiner_on_this_exec_ctx = NULL; + if (exec_ctx->active_combiner == NULL) { + exec_ctx->active_combiner = exec_ctx->last_combiner = lock; + } else { + exec_ctx->last_combiner->next_combiner_on_this_exec_ctx = lock; + exec_ctx->last_combiner = lock; + } +} + +static void push_first_on_exec_ctx(grpc_exec_ctx *exec_ctx, + grpc_combiner *lock) { + lock->next_combiner_on_this_exec_ctx = exec_ctx->active_combiner; + exec_ctx->active_combiner = lock; + if (lock->next_combiner_on_this_exec_ctx == NULL) { + exec_ctx->last_combiner = lock; + } +} + +void grpc_combiner_execute(grpc_exec_ctx *exec_ctx, grpc_combiner *lock, + grpc_closure *cl, grpc_error *error, + bool covered_by_poller) { + GPR_TIMER_BEGIN("combiner.execute", 0); + gpr_atm last = gpr_atm_full_fetch_add(&lock->state, 2); + GRPC_COMBINER_TRACE(gpr_log( + GPR_DEBUG, "C:%p grpc_combiner_execute c=%p cov=%d last=%" PRIdPTR, lock, + cl, covered_by_poller, last)); + GPR_ASSERT(last & 1); // ensure lock has not been destroyed + cl->error_data.scratch = + pack_error_data((error_data){error, covered_by_poller}); + if (covered_by_poller) { + gpr_atm_no_barrier_fetch_add(&lock->covered_by_poller, 1); + } + gpr_mpscq_push(&lock->queue, &cl->next_data.atm_next); + if (last == 1) { + // code will be written when the exec_ctx calls + // grpc_combiner_continue_exec_ctx + push_last_on_exec_ctx(exec_ctx, lock); + } + GPR_TIMER_END("combiner.execute", 0); +} + +static void move_next(grpc_exec_ctx *exec_ctx) { + exec_ctx->active_combiner = + exec_ctx->active_combiner->next_combiner_on_this_exec_ctx; + if (exec_ctx->active_combiner == NULL) { + exec_ctx->last_combiner = NULL; + } +} + +static void offload(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) { + grpc_combiner *lock = arg; + push_last_on_exec_ctx(exec_ctx, lock); +} + +static void queue_offload(grpc_exec_ctx *exec_ctx, grpc_combiner *lock) { + move_next(exec_ctx); + GRPC_COMBINER_TRACE(gpr_log(GPR_DEBUG, "C:%p queue_offload --> %p", lock, + lock->optional_workqueue)); + grpc_workqueue_enqueue(exec_ctx, lock->optional_workqueue, &lock->offload, + GRPC_ERROR_NONE); +} + +bool grpc_combiner_continue_exec_ctx(grpc_exec_ctx *exec_ctx) { + GPR_TIMER_BEGIN("combiner.continue_exec_ctx", 0); + grpc_combiner *lock = exec_ctx->active_combiner; + if (lock == NULL) { + GPR_TIMER_END("combiner.continue_exec_ctx", 0); + return false; + } + + GRPC_COMBINER_TRACE( + gpr_log(GPR_DEBUG, + "C:%p grpc_combiner_continue_exec_ctx workqueue=%p " + "is_covered_by_poller=%d exec_ctx_ready_to_finish=%d " + "time_to_execute_final_list=%d", + lock, lock->optional_workqueue, is_covered_by_poller(lock), + grpc_exec_ctx_ready_to_finish(exec_ctx), + lock->time_to_execute_final_list)); + + if (lock->optional_workqueue != NULL && is_covered_by_poller(lock) && + grpc_exec_ctx_ready_to_finish(exec_ctx)) { + GPR_TIMER_MARK("offload_from_finished_exec_ctx", 0); + // this execution context wants to move on, and we have a workqueue (and + // so can help the execution context out): schedule remaining work to be + // picked up on the workqueue + queue_offload(exec_ctx, lock); + GPR_TIMER_END("combiner.continue_exec_ctx", 0); + return true; + } + + if (!lock->time_to_execute_final_list || + // peek to see if something new has shown up, and execute that with + // priority + (gpr_atm_acq_load(&lock->state) >> 1) > 1) { + gpr_mpscq_node *n = gpr_mpscq_pop(&lock->queue); + GRPC_COMBINER_TRACE( + gpr_log(GPR_DEBUG, "C:%p maybe_finish_one n=%p", lock, n)); + if (n == NULL) { + // queue is in an inconsistant state: use this as a cue that we should + // go off and do something else for a while (and come back later) + GPR_TIMER_MARK("delay_busy", 0); + if (lock->optional_workqueue != NULL && is_covered_by_poller(lock)) { + queue_offload(exec_ctx, lock); + } + GPR_TIMER_END("combiner.continue_exec_ctx", 0); + return true; + } + GPR_TIMER_BEGIN("combiner.exec1", 0); + grpc_closure *cl = (grpc_closure *)n; + error_data err = unpack_error_data(cl->error_data.scratch); + cl->cb(exec_ctx, cl->cb_arg, err.error); + if (err.covered_by_poller) { + gpr_atm_no_barrier_fetch_add(&lock->covered_by_poller, -1); + } + GRPC_ERROR_UNREF(err.error); + GPR_TIMER_END("combiner.exec1", 0); + } else { + grpc_closure *c = lock->final_list.head; + GPR_ASSERT(c != NULL); + grpc_closure_list_init(&lock->final_list); + lock->final_list_covered_by_poller = false; + int loops = 0; + while (c != NULL) { + GPR_TIMER_BEGIN("combiner.exec_1final", 0); + GRPC_COMBINER_TRACE( + gpr_log(GPR_DEBUG, "C:%p execute_final[%d] c=%p", lock, loops, c)); + grpc_closure *next = c->next_data.next; + grpc_error *error = c->error_data.error; + c->cb(exec_ctx, c->cb_arg, error); + GRPC_ERROR_UNREF(error); + c = next; + GPR_TIMER_END("combiner.exec_1final", 0); + } + } + + GPR_TIMER_MARK("unref", 0); + move_next(exec_ctx); + lock->time_to_execute_final_list = false; + gpr_atm old_state = gpr_atm_full_fetch_add(&lock->state, -2); + GRPC_COMBINER_TRACE( + gpr_log(GPR_DEBUG, "C:%p finish old_state=%" PRIdPTR, lock, old_state)); + switch (old_state) { + default: + // we have multiple queued work items: just continue executing them + break; + case 5: // we're down to one queued item: if it's the final list we + case 4: // should do that + if (!grpc_closure_list_empty(lock->final_list)) { + lock->time_to_execute_final_list = true; + } + break; + case 3: // had one count, one unorphaned --> unlocked unorphaned + GPR_TIMER_END("combiner.continue_exec_ctx", 0); + return true; + case 2: // and one count, one orphaned --> unlocked and orphaned + really_destroy(exec_ctx, lock); + GPR_TIMER_END("combiner.continue_exec_ctx", 0); + return true; + case 1: + case 0: + // these values are illegal - representing an already unlocked or + // deleted lock + GPR_TIMER_END("combiner.continue_exec_ctx", 0); + GPR_UNREACHABLE_CODE(return true); + } + push_first_on_exec_ctx(exec_ctx, lock); + GPR_TIMER_END("combiner.continue_exec_ctx", 0); + return true; +} + +static void enqueue_finally(grpc_exec_ctx *exec_ctx, void *closure, + grpc_error *error) { + grpc_combiner_execute_finally(exec_ctx, exec_ctx->active_combiner, closure, + GRPC_ERROR_REF(error), false); +} + +void grpc_combiner_execute_finally(grpc_exec_ctx *exec_ctx, grpc_combiner *lock, + grpc_closure *closure, grpc_error *error, + bool covered_by_poller) { + GRPC_COMBINER_TRACE(gpr_log( + GPR_DEBUG, "C:%p grpc_combiner_execute_finally c=%p; ac=%p; cov=%d", lock, + closure, exec_ctx->active_combiner, covered_by_poller)); + GPR_TIMER_BEGIN("combiner.execute_finally", 0); + if (exec_ctx->active_combiner != lock) { + GPR_TIMER_MARK("slowpath", 0); + grpc_combiner_execute(exec_ctx, lock, + grpc_closure_create(enqueue_finally, closure), error, + false); + GPR_TIMER_END("combiner.execute_finally", 0); + return; + } + + if (grpc_closure_list_empty(lock->final_list)) { + gpr_atm_full_fetch_add(&lock->state, 2); + } + if (covered_by_poller) { + lock->final_list_covered_by_poller = true; + } + grpc_closure_list_append(&lock->final_list, closure, error); + GPR_TIMER_END("combiner.execute_finally", 0); +} diff --git a/src/core/lib/iomgr/combiner.h b/src/core/lib/iomgr/combiner.h new file mode 100644 index 0000000000..d04eeed83a --- /dev/null +++ b/src/core/lib/iomgr/combiner.h @@ -0,0 +1,66 @@ +/* + * + * Copyright 2016, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef GRPC_CORE_LIB_IOMGR_COMBINER_H +#define GRPC_CORE_LIB_IOMGR_COMBINER_H + +#include <stddef.h> + +#include <grpc/support/atm.h> +#include "src/core/lib/iomgr/exec_ctx.h" +#include "src/core/lib/support/mpscq.h" + +// Provides serialized access to some resource. +// Each action queued on a combiner is executed serially in a borrowed thread. +// The actual thread executing actions may change over time (but there will only +// every be one at a time). + +// Initialize the lock, with an optional workqueue to shift load to when +// necessary +grpc_combiner *grpc_combiner_create(grpc_workqueue *optional_workqueue); +// Destroy the lock +void grpc_combiner_destroy(grpc_exec_ctx *exec_ctx, grpc_combiner *lock); +// Execute \a action within the lock. +void grpc_combiner_execute(grpc_exec_ctx *exec_ctx, grpc_combiner *lock, + grpc_closure *closure, grpc_error *error, + bool covered_by_poller); +// Execute \a action within the lock just prior to unlocking. +void grpc_combiner_execute_finally(grpc_exec_ctx *exec_ctx, grpc_combiner *lock, + grpc_closure *closure, grpc_error *error, + bool covered_by_poller); + +bool grpc_combiner_continue_exec_ctx(grpc_exec_ctx *exec_ctx); + +extern int grpc_combiner_trace; + +#endif /* GRPC_CORE_LIB_IOMGR_COMBINER_H */ diff --git a/src/core/lib/iomgr/error.c b/src/core/lib/iomgr/error.c index 149c55663c..45ef75e04d 100644 --- a/src/core/lib/iomgr/error.c +++ b/src/core/lib/iomgr/error.c @@ -265,7 +265,7 @@ static grpc_error *copy_error_and_unref(grpc_error *in) { } else { out = gpr_malloc(sizeof(*out)); #ifdef GRPC_ERROR_REFCOUNT_DEBUG - gpr_log(GPR_DEBUG, "%p create copying", out); + gpr_log(GPR_DEBUG, "%p create copying %p", out, in); #endif out->ints = gpr_avl_ref(in->ints); out->strs = gpr_avl_ref(in->strs); @@ -332,7 +332,7 @@ grpc_error *grpc_error_add_child(grpc_error *src, grpc_error *child) { return new; } -static const char *no_error_string = "null"; +static const char *no_error_string = "\"No Error\""; static const char *oom_error_string = "\"Out of memory\""; static const char *cancelled_error_string = "\"Cancelled\""; diff --git a/src/core/lib/iomgr/error.h b/src/core/lib/iomgr/error.h index 6c769accdb..2ab3ef9f40 100644 --- a/src/core/lib/iomgr/error.h +++ b/src/core/lib/iomgr/error.h @@ -123,9 +123,13 @@ typedef enum { GRPC_ERROR_TIME_CREATED, } grpc_error_times; +/// The following "special" errors can be propagated without allocating memory. +/// They are always even so that other code (particularly combiner locks) can +/// safely use the lower bit for themselves. + #define GRPC_ERROR_NONE ((grpc_error *)NULL) -#define GRPC_ERROR_OOM ((grpc_error *)1) -#define GRPC_ERROR_CANCELLED ((grpc_error *)2) +#define GRPC_ERROR_OOM ((grpc_error *)2) +#define GRPC_ERROR_CANCELLED ((grpc_error *)4) const char *grpc_error_string(grpc_error *error); void grpc_error_free_string(const char *str); diff --git a/src/core/lib/iomgr/ev_epoll_linux.c b/src/core/lib/iomgr/ev_epoll_linux.c index eba347125e..42c0ae2dcd 100644 --- a/src/core/lib/iomgr/ev_epoll_linux.c +++ b/src/core/lib/iomgr/ev_epoll_linux.c @@ -152,14 +152,13 @@ static void fd_global_shutdown(void); * Polling island Declarations */ -//#define GRPC_PI_REF_COUNT_DEBUG -#ifdef GRPC_PI_REF_COUNT_DEBUG +#ifdef GRPC_WORKQUEUE_REFCOUNT_DEBUG #define PI_ADD_REF(p, r) pi_add_ref_dbg((p), (r), __FILE__, __LINE__) #define PI_UNREF(exec_ctx, p, r) \ pi_unref_dbg((exec_ctx), (p), (r), __FILE__, __LINE__) -#else /* defined(GRPC_PI_REF_COUNT_DEBUG) */ +#else /* defined(GRPC_WORKQUEUE_REFCOUNT_DEBUG) */ #define PI_ADD_REF(p, r) pi_add_ref((p)) #define PI_UNREF(exec_ctx, p, r) pi_unref((exec_ctx), (p)) @@ -185,8 +184,11 @@ typedef struct polling_island { * (except mu and ref_count) are invalid and must be ignored. */ gpr_atm merged_to; - /* The workqueue associated with this polling island */ - grpc_workqueue *workqueue; + gpr_atm poller_count; + gpr_mu workqueue_read_mu; + gpr_mpscq workqueue_items; + gpr_atm workqueue_item_count; + grpc_wakeup_fd workqueue_wakeup_fd; /* The fd of the underlying epoll set */ int epoll_fd; @@ -275,6 +277,8 @@ static bool append_error(grpc_error **composite, grpc_error *error, threads that woke up MUST NOT call grpc_wakeup_fd_consume_wakeup() */ static grpc_wakeup_fd polling_island_wakeup_fd; +static __thread polling_island *g_current_thread_polling_island; + /* Forward declaration */ static void polling_island_delete(grpc_exec_ctx *exec_ctx, polling_island *pi); @@ -289,12 +293,12 @@ static void polling_island_delete(grpc_exec_ctx *exec_ctx, polling_island *pi); gpr_atm g_epoll_sync; #endif /* defined(GRPC_TSAN) */ -#ifdef GRPC_PI_REF_COUNT_DEBUG static void pi_add_ref(polling_island *pi); static void pi_unref(grpc_exec_ctx *exec_ctx, polling_island *pi); -static void pi_add_ref_dbg(polling_island *pi, char *reason, char *file, - int line) { +#ifdef GRPC_WORKQUEUE_REFCOUNT_DEBUG +static void pi_add_ref_dbg(polling_island *pi, const char *reason, + const char *file, int line) { long old_cnt = gpr_atm_acq_load(&pi->ref_count); pi_add_ref(pi); gpr_log(GPR_DEBUG, "Add ref pi: %p, old: %ld -> new:%ld (%s) - (%s, %d)", @@ -302,12 +306,42 @@ static void pi_add_ref_dbg(polling_island *pi, char *reason, char *file, } static void pi_unref_dbg(grpc_exec_ctx *exec_ctx, polling_island *pi, - char *reason, char *file, int line) { + const char *reason, const char *file, int line) { long old_cnt = gpr_atm_acq_load(&pi->ref_count); pi_unref(exec_ctx, pi); gpr_log(GPR_DEBUG, "Unref pi: %p, old:%ld -> new:%ld (%s) - (%s, %d)", (void *)pi, old_cnt, (old_cnt - 1), reason, file, line); } + +static grpc_workqueue *workqueue_ref(grpc_workqueue *workqueue, + const char *file, int line, + const char *reason) { + if (workqueue != NULL) { + pi_add_ref_dbg((polling_island *)workqueue, reason, file, line); + } + return workqueue; +} + +static void workqueue_unref(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue, + const char *file, int line, const char *reason) { + if (workqueue != NULL) { + pi_unref_dbg(exec_ctx, (polling_island *)workqueue, reason, file, line); + } +} +#else +static grpc_workqueue *workqueue_ref(grpc_workqueue *workqueue) { + if (workqueue != NULL) { + pi_add_ref((polling_island *)workqueue); + } + return workqueue; +} + +static void workqueue_unref(grpc_exec_ctx *exec_ctx, + grpc_workqueue *workqueue) { + if (workqueue != NULL) { + pi_unref(exec_ctx, (polling_island *)workqueue); + } +} #endif static void pi_add_ref(polling_island *pi) { @@ -315,10 +349,7 @@ static void pi_add_ref(polling_island *pi) { } static void pi_unref(grpc_exec_ctx *exec_ctx, polling_island *pi) { - /* If ref count went to one, we're back to just the workqueue owning a ref. - Unref the workqueue to break the loop. - - If ref count went to zero, delete the polling island. + /* If ref count went to zero, delete the polling island. Note that this deletion not be done under a lock. Once the ref count goes to zero, we are guaranteed that no one else holds a reference to the polling island (and that there is no racing pi_add_ref() call either). @@ -326,20 +357,12 @@ static void pi_unref(grpc_exec_ctx *exec_ctx, polling_island *pi) { Also, if we are deleting the polling island and the merged_to field is non-empty, we should remove a ref to the merged_to polling island */ - switch (gpr_atm_full_fetch_add(&pi->ref_count, -1)) { - case 2: /* last external ref: the only one now owned is by the workqueue */ - GRPC_WORKQUEUE_UNREF(exec_ctx, pi->workqueue, "polling_island"); - break; - case 1: { - polling_island *next = (polling_island *)gpr_atm_acq_load(&pi->merged_to); - polling_island_delete(exec_ctx, pi); - if (next != NULL) { - PI_UNREF(exec_ctx, next, "pi_delete"); /* Recursive call */ - } - break; + if (1 == gpr_atm_full_fetch_add(&pi->ref_count, -1)) { + polling_island *next = (polling_island *)gpr_atm_acq_load(&pi->merged_to); + polling_island_delete(exec_ctx, pi); + if (next != NULL) { + PI_UNREF(exec_ctx, next, "pi_delete"); /* Recursive call */ } - case 0: - GPR_UNREACHABLE_CODE(return ); } } @@ -488,11 +511,20 @@ static polling_island *polling_island_create(grpc_exec_ctx *exec_ctx, pi->fd_capacity = 0; pi->fds = NULL; pi->epoll_fd = -1; - pi->workqueue = NULL; + + gpr_mu_init(&pi->workqueue_read_mu); + gpr_mpscq_init(&pi->workqueue_items); + gpr_atm_rel_store(&pi->workqueue_item_count, 0); gpr_atm_rel_store(&pi->ref_count, 0); + gpr_atm_rel_store(&pi->poller_count, 0); gpr_atm_rel_store(&pi->merged_to, (gpr_atm)NULL); + if (!append_error(error, grpc_wakeup_fd_init(&pi->workqueue_wakeup_fd), + err_desc)) { + goto done; + } + pi->epoll_fd = epoll_create1(EPOLL_CLOEXEC); if (pi->epoll_fd < 0) { @@ -501,26 +533,14 @@ static polling_island *polling_island_create(grpc_exec_ctx *exec_ctx, } polling_island_add_wakeup_fd_locked(pi, &grpc_global_wakeup_fd, error); + polling_island_add_wakeup_fd_locked(pi, &pi->workqueue_wakeup_fd, error); if (initial_fd != NULL) { polling_island_add_fds_locked(pi, &initial_fd, 1, true, error); } - if (append_error(error, grpc_workqueue_create(exec_ctx, &pi->workqueue), - err_desc) && - *error == GRPC_ERROR_NONE) { - polling_island_add_fds_locked(pi, &pi->workqueue->wakeup_read_fd, 1, true, - error); - GPR_ASSERT(pi->workqueue->wakeup_read_fd->polling_island == NULL); - pi->workqueue->wakeup_read_fd->polling_island = pi; - PI_ADD_REF(pi, "fd"); - } - done: if (*error != GRPC_ERROR_NONE) { - if (pi->workqueue != NULL) { - GRPC_WORKQUEUE_UNREF(exec_ctx, pi->workqueue, "polling_island"); - } polling_island_delete(exec_ctx, pi); pi = NULL; } @@ -533,7 +553,11 @@ static void polling_island_delete(grpc_exec_ctx *exec_ctx, polling_island *pi) { if (pi->epoll_fd >= 0) { close(pi->epoll_fd); } + GPR_ASSERT(gpr_atm_no_barrier_load(&pi->workqueue_item_count) == 0); + gpr_mu_destroy(&pi->workqueue_read_mu); + gpr_mpscq_destroy(&pi->workqueue_items); gpr_mu_destroy(&pi->mu); + grpc_wakeup_fd_destroy(&pi->workqueue_wakeup_fd); gpr_free(pi->fds); gpr_free(pi); } @@ -678,6 +702,40 @@ static void polling_island_unlock_pair(polling_island *p, polling_island *q) { } } +static void workqueue_maybe_wakeup(polling_island *pi) { + bool force_wakeup = false; + bool is_current_poller = (g_current_thread_polling_island == pi); + gpr_atm min_current_pollers_for_wakeup = is_current_poller ? 1 : 0; + gpr_atm current_pollers = gpr_atm_no_barrier_load(&pi->poller_count); + if (force_wakeup || current_pollers > min_current_pollers_for_wakeup) { + GRPC_LOG_IF_ERROR("workqueue_wakeup_fd", + grpc_wakeup_fd_wakeup(&pi->workqueue_wakeup_fd)); + } +} + +static void workqueue_move_items_to_parent(polling_island *q) { + polling_island *p = (polling_island *)gpr_atm_no_barrier_load(&q->merged_to); + if (p == NULL) { + return; + } + gpr_mu_lock(&q->workqueue_read_mu); + int num_added = 0; + while (gpr_atm_no_barrier_load(&q->workqueue_item_count) > 0) { + gpr_mpscq_node *n = gpr_mpscq_pop(&q->workqueue_items); + if (n != NULL) { + gpr_atm_no_barrier_fetch_add(&q->workqueue_item_count, -1); + gpr_atm_no_barrier_fetch_add(&p->workqueue_item_count, 1); + gpr_mpscq_push(&p->workqueue_items, n); + num_added++; + } + } + gpr_mu_unlock(&q->workqueue_read_mu); + if (num_added > 0) { + workqueue_maybe_wakeup(p); + } + workqueue_move_items_to_parent(p); +} + static polling_island *polling_island_merge(polling_island *p, polling_island *q, grpc_error **error) { @@ -702,6 +760,8 @@ static polling_island *polling_island_merge(polling_island *p, /* Add the 'merged_to' link from p --> q */ gpr_atm_rel_store(&p->merged_to, (gpr_atm)q); PI_ADD_REF(q, "pi_merge"); /* To account for the new incoming ref from p */ + + workqueue_move_items_to_parent(q); } /* else if p == q, nothing needs to be done */ @@ -712,6 +772,26 @@ static polling_island *polling_island_merge(polling_island *p, return q; } +static void workqueue_enqueue(grpc_exec_ctx *exec_ctx, + grpc_workqueue *workqueue, grpc_closure *closure, + grpc_error *error) { + GPR_TIMER_BEGIN("workqueue.enqueue", 0); + /* take a ref to the workqueue: otherwise it can happen that whatever events + * this kicks off ends up destroying the workqueue before this function + * completes */ + GRPC_WORKQUEUE_REF(workqueue, "enqueue"); + polling_island *pi = (polling_island *)workqueue; + gpr_atm last = gpr_atm_no_barrier_fetch_add(&pi->workqueue_item_count, 1); + closure->error_data.error = error; + gpr_mpscq_push(&pi->workqueue_items, &closure->next_data.atm_next); + if (last == 0) { + workqueue_maybe_wakeup(pi); + } + workqueue_move_items_to_parent(pi); + GRPC_WORKQUEUE_UNREF(exec_ctx, workqueue, "enqueue"); + GPR_TIMER_END("workqueue.enqueue", 0); +} + static grpc_error *polling_island_global_init() { grpc_error *error = GRPC_ERROR_NONE; @@ -1042,11 +1122,8 @@ static void fd_notify_on_write(grpc_exec_ctx *exec_ctx, grpc_fd *fd, static grpc_workqueue *fd_get_workqueue(grpc_fd *fd) { gpr_mu_lock(&fd->mu); - grpc_workqueue *workqueue = NULL; - if (fd->polling_island != NULL) { - workqueue = - GRPC_WORKQUEUE_REF(fd->polling_island->workqueue, "get_workqueue"); - } + grpc_workqueue *workqueue = GRPC_WORKQUEUE_REF( + (grpc_workqueue *)fd->polling_island, "fd_get_workqueue"); gpr_mu_unlock(&fd->mu); return workqueue; } @@ -1299,7 +1376,26 @@ static void pollset_reset(grpc_pollset *pollset) { GPR_ASSERT(pollset->polling_island == NULL); } -#define GRPC_EPOLL_MAX_EVENTS 1000 +static bool maybe_do_workqueue_work(grpc_exec_ctx *exec_ctx, + polling_island *pi) { + if (gpr_mu_trylock(&pi->workqueue_read_mu)) { + gpr_mpscq_node *n = gpr_mpscq_pop(&pi->workqueue_items); + gpr_mu_unlock(&pi->workqueue_read_mu); + if (n != NULL) { + if (gpr_atm_full_fetch_add(&pi->workqueue_item_count, -1) > 1) { + workqueue_maybe_wakeup(pi); + } + grpc_closure *c = (grpc_closure *)n; + grpc_closure_run(exec_ctx, c, c->error_data.error); + return true; + } else if (gpr_atm_no_barrier_load(&pi->workqueue_item_count) > 0) { + workqueue_maybe_wakeup(pi); + } + } + return false; +} + +#define GRPC_EPOLL_MAX_EVENTS 100 /* Note: sig_mask contains the signal mask to use *during* epoll_wait() */ static void pollset_work_and_unlock(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, @@ -1354,7 +1450,10 @@ static void pollset_work_and_unlock(grpc_exec_ctx *exec_ctx, PI_ADD_REF(pi, "ps_work"); gpr_mu_unlock(&pollset->mu); - do { + if (!maybe_do_workqueue_work(exec_ctx, pi)) { + gpr_atm_no_barrier_fetch_add(&pi->poller_count, 1); + g_current_thread_polling_island = pi; + GRPC_SCHEDULING_START_BLOCKING_REGION; ep_rv = epoll_pwait(epoll_fd, ep_ev, GRPC_EPOLL_MAX_EVENTS, timeout_ms, sig_mask); @@ -1386,6 +1485,11 @@ static void pollset_work_and_unlock(grpc_exec_ctx *exec_ctx, append_error(error, grpc_wakeup_fd_consume_wakeup(&grpc_global_wakeup_fd), err_desc); + } else if (data_ptr == &pi->workqueue_wakeup_fd) { + append_error(error, + grpc_wakeup_fd_consume_wakeup(&grpc_global_wakeup_fd), + err_desc); + maybe_do_workqueue_work(exec_ctx, pi); } else if (data_ptr == &polling_island_wakeup_fd) { GRPC_POLLING_TRACE( "pollset_work: pollset: %p, worker: %p polling island (epoll_fd: " @@ -1408,7 +1512,10 @@ static void pollset_work_and_unlock(grpc_exec_ctx *exec_ctx, } } } - } while (ep_rv == GRPC_EPOLL_MAX_EVENTS); + + g_current_thread_polling_island = NULL; + gpr_atm_no_barrier_fetch_add(&pi->poller_count, -1); + } GPR_ASSERT(pi != NULL); @@ -1531,6 +1638,8 @@ static grpc_error *pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, static void pollset_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, grpc_fd *fd) { + GPR_TIMER_BEGIN("pollset_add_fd", 0); + grpc_error *error = GRPC_ERROR_NONE; gpr_mu_lock(&pollset->mu); @@ -1643,6 +1752,8 @@ retry: gpr_mu_unlock(&pollset->mu); GRPC_LOG_IF_ERROR("pollset_add_fd", error); + + GPR_TIMER_END("pollset_add_fd", 0); } /******************************************************************************* @@ -1864,6 +1975,10 @@ static const grpc_event_engine_vtable vtable = { .kick_poller = kick_poller, + .workqueue_ref = workqueue_ref, + .workqueue_unref = workqueue_unref, + .workqueue_enqueue = workqueue_enqueue, + .shutdown_engine = shutdown_engine, }; diff --git a/src/core/lib/iomgr/ev_poll_and_epoll_posix.c b/src/core/lib/iomgr/ev_poll_and_epoll_posix.c index c2107e5e39..1829440a6e 100644 --- a/src/core/lib/iomgr/ev_poll_and_epoll_posix.c +++ b/src/core/lib/iomgr/ev_poll_and_epoll_posix.c @@ -1989,6 +1989,32 @@ static void pollset_set_del_fd(grpc_exec_ctx *exec_ctx, } /******************************************************************************* + * workqueue stubs + */ + +#ifdef GRPC_WORKQUEUE_REFCOUNT_DEBUG +static grpc_workqueue *workqueue_ref(grpc_workqueue *workqueue, + const char *file, int line, + const char *reason) { + return workqueue; +} +static void workqueue_unref(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue, + const char *file, int line, const char *reason) {} +#else +static grpc_workqueue *workqueue_ref(grpc_workqueue *workqueue) { + return workqueue; +} +static void workqueue_unref(grpc_exec_ctx *exec_ctx, + grpc_workqueue *workqueue) {} +#endif + +static void workqueue_enqueue(grpc_exec_ctx *exec_ctx, + grpc_workqueue *workqueue, grpc_closure *closure, + grpc_error *error) { + grpc_exec_ctx_sched(exec_ctx, closure, error, NULL); +} + +/******************************************************************************* * event engine binding */ @@ -2029,6 +2055,10 @@ static const grpc_event_engine_vtable vtable = { .kick_poller = kick_poller, + .workqueue_ref = workqueue_ref, + .workqueue_unref = workqueue_unref, + .workqueue_enqueue = workqueue_enqueue, + .shutdown_engine = shutdown_engine, }; diff --git a/src/core/lib/iomgr/ev_poll_posix.c b/src/core/lib/iomgr/ev_poll_posix.c index 16a5e3083e..b84a56018f 100644 --- a/src/core/lib/iomgr/ev_poll_posix.c +++ b/src/core/lib/iomgr/ev_poll_posix.c @@ -1236,6 +1236,32 @@ static void pollset_set_del_fd(grpc_exec_ctx *exec_ctx, } /******************************************************************************* + * workqueue stubs + */ + +#ifdef GRPC_WORKQUEUE_REFCOUNT_DEBUG +static grpc_workqueue *workqueue_ref(grpc_workqueue *workqueue, + const char *file, int line, + const char *reason) { + return workqueue; +} +static void workqueue_unref(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue, + const char *file, int line, const char *reason) {} +#else +static grpc_workqueue *workqueue_ref(grpc_workqueue *workqueue) { + return workqueue; +} +static void workqueue_unref(grpc_exec_ctx *exec_ctx, + grpc_workqueue *workqueue) {} +#endif + +static void workqueue_enqueue(grpc_exec_ctx *exec_ctx, + grpc_workqueue *workqueue, grpc_closure *closure, + grpc_error *error) { + grpc_exec_ctx_sched(exec_ctx, closure, error, NULL); +} + +/******************************************************************************* * event engine binding */ @@ -1273,6 +1299,10 @@ static const grpc_event_engine_vtable vtable = { .kick_poller = kick_poller, + .workqueue_ref = workqueue_ref, + .workqueue_unref = workqueue_unref, + .workqueue_enqueue = workqueue_enqueue, + .shutdown_engine = shutdown_engine, }; diff --git a/src/core/lib/iomgr/ev_posix.c b/src/core/lib/iomgr/ev_posix.c index 6536672685..26618f8d55 100644 --- a/src/core/lib/iomgr/ev_posix.c +++ b/src/core/lib/iomgr/ev_posix.c @@ -258,4 +258,27 @@ void grpc_pollset_set_del_fd(grpc_exec_ctx *exec_ctx, grpc_error *grpc_kick_poller(void) { return g_event_engine->kick_poller(); } +#ifdef GRPC_WORKQUEUE_REFCOUNT_DEBUG +grpc_workqueue *grpc_workqueue_ref(grpc_workqueue *workqueue, const char *file, + int line, const char *reason) { + return g_event_engine->workqueue_ref(workqueue, file, line, reason); +} +void grpc_workqueue_unref(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue, + const char *file, int line, const char *reason) { + g_event_engine->workqueue_unref(exec_ctx, workqueue, file, line, reason); +} +#else +grpc_workqueue *grpc_workqueue_ref(grpc_workqueue *workqueue) { + return g_event_engine->workqueue_ref(workqueue); +} +void grpc_workqueue_unref(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue) { + g_event_engine->workqueue_unref(exec_ctx, workqueue); +} +#endif + +void grpc_workqueue_enqueue(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue, + grpc_closure *closure, grpc_error *error) { + g_event_engine->workqueue_enqueue(exec_ctx, workqueue, closure, error); +} + #endif // GPR_POSIX_SOCKET diff --git a/src/core/lib/iomgr/ev_posix.h b/src/core/lib/iomgr/ev_posix.h index c2aa1756ea..2fdef06838 100644 --- a/src/core/lib/iomgr/ev_posix.h +++ b/src/core/lib/iomgr/ev_posix.h @@ -40,6 +40,7 @@ #include "src/core/lib/iomgr/pollset.h" #include "src/core/lib/iomgr/pollset_set.h" #include "src/core/lib/iomgr/wakeup_fd_posix.h" +#include "src/core/lib/iomgr/workqueue.h" typedef struct grpc_fd grpc_fd; @@ -95,6 +96,18 @@ typedef struct grpc_event_engine_vtable { grpc_error *(*kick_poller)(void); void (*shutdown_engine)(void); + +#ifdef GRPC_WORKQUEUE_REFCOUNT_DEBUG + grpc_workqueue *(*workqueue_ref)(grpc_workqueue *workqueue, const char *file, + int line, const char *reason); + void (*workqueue_unref)(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue, + const char *file, int line, const char *reason); +#else + grpc_workqueue *(*workqueue_ref)(grpc_workqueue *workqueue); + void (*workqueue_unref)(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue); +#endif + void (*workqueue_enqueue)(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue, + grpc_closure *closure, grpc_error *error); } grpc_event_engine_vtable; void grpc_event_engine_init(void); diff --git a/src/core/lib/iomgr/exec_ctx.c b/src/core/lib/iomgr/exec_ctx.c index ac7785ec13..a3c40e8092 100644 --- a/src/core/lib/iomgr/exec_ctx.c +++ b/src/core/lib/iomgr/exec_ctx.c @@ -37,6 +37,7 @@ #include <grpc/support/sync.h> #include <grpc/support/thd.h> +#include "src/core/lib/iomgr/combiner.h" #include "src/core/lib/iomgr/workqueue.h" #include "src/core/lib/profiling/timers.h" @@ -60,18 +61,47 @@ bool grpc_always_ready_to_finish(grpc_exec_ctx *exec_ctx, void *arg_ignored) { bool grpc_exec_ctx_flush(grpc_exec_ctx *exec_ctx) { bool did_something = 0; GPR_TIMER_BEGIN("grpc_exec_ctx_flush", 0); - while (!grpc_closure_list_empty(exec_ctx->closure_list)) { - grpc_closure *c = exec_ctx->closure_list.head; - exec_ctx->closure_list.head = exec_ctx->closure_list.tail = NULL; - while (c != NULL) { - grpc_closure *next = c->next_data.next; - grpc_error *error = c->error; - did_something = true; - GPR_TIMER_BEGIN("grpc_exec_ctx_flush.cb", 0); + for (;;) { + if (!grpc_closure_list_empty(exec_ctx->closure_list)) { + grpc_closure *c = exec_ctx->closure_list.head; + exec_ctx->closure_list.head = exec_ctx->closure_list.tail = NULL; + while (c != NULL) { + grpc_closure *next = c->next_data.next; + did_something = true; + grpc_closure_run(exec_ctx, c, c->error_data.error); + c = next; + } + continue; + } + if (grpc_combiner_continue_exec_ctx(exec_ctx)) { + continue; + } + break; + } + GPR_ASSERT(exec_ctx->active_combiner == NULL); + if (exec_ctx->stealing_from_workqueue != NULL) { + if (grpc_exec_ctx_ready_to_finish(exec_ctx)) { + grpc_workqueue_enqueue(exec_ctx, exec_ctx->stealing_from_workqueue, + exec_ctx->stolen_closure, + exec_ctx->stolen_closure->error_data.error); + GRPC_WORKQUEUE_UNREF(exec_ctx, exec_ctx->stealing_from_workqueue, + "exec_ctx_sched"); + exec_ctx->stealing_from_workqueue = NULL; + exec_ctx->stolen_closure = NULL; + } else { + grpc_closure *c = exec_ctx->stolen_closure; + GRPC_WORKQUEUE_UNREF(exec_ctx, exec_ctx->stealing_from_workqueue, + "exec_ctx_sched"); + exec_ctx->stealing_from_workqueue = NULL; + exec_ctx->stolen_closure = NULL; + grpc_error *error = c->error_data.error; + GPR_TIMER_BEGIN("grpc_exec_ctx_flush.stolen_cb", 0); c->cb(exec_ctx, c->cb_arg, error); GRPC_ERROR_UNREF(error); - GPR_TIMER_END("grpc_exec_ctx_flush.cb", 0); - c = next; + GPR_TIMER_END("grpc_exec_ctx_flush.stolen_cb", 0); + grpc_exec_ctx_flush(exec_ctx); + GPR_TIMER_END("grpc_exec_ctx_flush", 0); + return true; } } GPR_TIMER_END("grpc_exec_ctx_flush", 0); @@ -86,12 +116,25 @@ void grpc_exec_ctx_finish(grpc_exec_ctx *exec_ctx) { void grpc_exec_ctx_sched(grpc_exec_ctx *exec_ctx, grpc_closure *closure, grpc_error *error, grpc_workqueue *offload_target_or_null) { + GPR_TIMER_BEGIN("grpc_exec_ctx_sched", 0); if (offload_target_or_null == NULL) { grpc_closure_list_append(&exec_ctx->closure_list, closure, error); - } else { + } else if (exec_ctx->stealing_from_workqueue == NULL) { + exec_ctx->stealing_from_workqueue = offload_target_or_null; + closure->error_data.error = error; + exec_ctx->stolen_closure = closure; + } else if (exec_ctx->stealing_from_workqueue != offload_target_or_null) { grpc_workqueue_enqueue(exec_ctx, offload_target_or_null, closure, error); GRPC_WORKQUEUE_UNREF(exec_ctx, offload_target_or_null, "exec_ctx_sched"); + } else { /* stealing_from_workqueue == offload_target_or_null */ + grpc_workqueue_enqueue(exec_ctx, offload_target_or_null, + exec_ctx->stolen_closure, + exec_ctx->stolen_closure->error_data.error); + closure->error_data.error = error; + exec_ctx->stolen_closure = closure; + GRPC_WORKQUEUE_UNREF(exec_ctx, offload_target_or_null, "exec_ctx_sched"); } + GPR_TIMER_END("grpc_exec_ctx_sched", 0); } void grpc_exec_ctx_enqueue_list(grpc_exec_ctx *exec_ctx, diff --git a/src/core/lib/iomgr/exec_ctx.h b/src/core/lib/iomgr/exec_ctx.h index 917f332f03..91029f5fba 100644 --- a/src/core/lib/iomgr/exec_ctx.h +++ b/src/core/lib/iomgr/exec_ctx.h @@ -40,8 +40,8 @@ /** A workqueue represents a list of work to be executed asynchronously. Forward declared here to avoid a circular dependency with workqueue.h. */ -struct grpc_workqueue; typedef struct grpc_workqueue grpc_workqueue; +typedef struct grpc_combiner grpc_combiner; #ifndef GRPC_EXECUTION_CONTEXT_SANITIZER /** Execution context. @@ -66,13 +66,23 @@ typedef struct grpc_workqueue grpc_workqueue; */ struct grpc_exec_ctx { grpc_closure_list closure_list; + grpc_workqueue *stealing_from_workqueue; + grpc_closure *stolen_closure; + /** currently active combiner: updated only via combiner.c */ + grpc_combiner *active_combiner; + grpc_combiner *last_combiner; bool cached_ready_to_finish; void *check_ready_to_finish_arg; bool (*check_ready_to_finish)(grpc_exec_ctx *exec_ctx, void *arg); }; +/* initializer for grpc_exec_ctx: + prefer to use GRPC_EXEC_CTX_INIT whenever possible */ #define GRPC_EXEC_CTX_INIT_WITH_FINISH_CHECK(finish_check, finish_check_arg) \ - { GRPC_CLOSURE_LIST_INIT, false, finish_check_arg, finish_check } + { \ + GRPC_CLOSURE_LIST_INIT, NULL, NULL, NULL, NULL, false, finish_check_arg, \ + finish_check \ + } #else struct grpc_exec_ctx { bool cached_ready_to_finish; @@ -83,8 +93,10 @@ struct grpc_exec_ctx { { false, finish_check_arg, finish_check } #endif +/* initialize an execution context at the top level of an API call into grpc + (this is safe to use elsewhere, though possibly not as efficient) */ #define GRPC_EXEC_CTX_INIT \ - GRPC_EXEC_CTX_INIT_WITH_FINISH_CHECK(grpc_never_ready_to_finish, NULL) + GRPC_EXEC_CTX_INIT_WITH_FINISH_CHECK(grpc_always_ready_to_finish, NULL) /** Flush any work that has been enqueued onto this grpc_exec_ctx. * Caller must guarantee that no interfering locks are held. diff --git a/src/core/lib/iomgr/iomgr.c b/src/core/lib/iomgr/iomgr.c index d67d388b8c..4fd83e0b22 100644 --- a/src/core/lib/iomgr/iomgr.c +++ b/src/core/lib/iomgr/iomgr.c @@ -112,6 +112,14 @@ void grpc_iomgr_shutdown(void) { continue; } if (g_root_object.next != &g_root_object) { + if (grpc_iomgr_abort_on_leaks()) { + gpr_log(GPR_DEBUG, "Failed to free %" PRIuPTR + " iomgr objects before shutdown deadline: " + "memory leaks are likely", + count_objects()); + dump_objects("LEAKED"); + abort(); + } gpr_timespec short_deadline = gpr_time_add( gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_millis(100, GPR_TIMESPAN)); if (gpr_cv_wait(&g_rcv, &g_mu, short_deadline)) { @@ -122,9 +130,6 @@ void grpc_iomgr_shutdown(void) { "memory leaks are likely", count_objects()); dump_objects("LEAKED"); - if (grpc_iomgr_abort_on_leaks()) { - abort(); - } } break; } diff --git a/src/core/lib/iomgr/tcp_posix.c b/src/core/lib/iomgr/tcp_posix.c index 974d5ae479..00fd77679a 100644 --- a/src/core/lib/iomgr/tcp_posix.c +++ b/src/core/lib/iomgr/tcp_posix.c @@ -177,7 +177,7 @@ static void call_read_cb(grpc_exec_ctx *exec_ctx, grpc_tcp *tcp, tcp->read_cb = NULL; tcp->incoming_buffer = NULL; - grpc_exec_ctx_sched(exec_ctx, cb, error, NULL); + grpc_closure_run(exec_ctx, cb, error); } #define MAX_READ_IOVEC 4 @@ -209,11 +209,11 @@ static void tcp_continue_read(grpc_exec_ctx *exec_ctx, grpc_tcp *tcp) { msg.msg_controllen = 0; msg.msg_flags = 0; - GPR_TIMER_BEGIN("recvmsg", 1); + GPR_TIMER_BEGIN("recvmsg", 0); do { read_bytes = recvmsg(tcp->fd, &msg, 0); } while (read_bytes < 0 && errno == EINTR); - GPR_TIMER_END("recvmsg", 0); + GPR_TIMER_END("recvmsg", read_bytes >= 0); if (read_bytes < 0) { /* NB: After calling call_read_cb a parallel call of the read handler may @@ -379,15 +379,21 @@ static void tcp_handle_write(grpc_exec_ctx *exec_ctx, void *arg /* grpc_tcp */, } if (!tcp_flush(tcp, &error)) { + if (grpc_tcp_trace) { + gpr_log(GPR_DEBUG, "write: delayed"); + } grpc_fd_notify_on_write(exec_ctx, tcp->em_fd, &tcp->write_closure); } else { cb = tcp->write_cb; tcp->write_cb = NULL; - GPR_TIMER_BEGIN("tcp_handle_write.cb", 0); - cb->cb(exec_ctx, cb->cb_arg, error); - GPR_TIMER_END("tcp_handle_write.cb", 0); + if (grpc_tcp_trace) { + const char *str = grpc_error_string(error); + gpr_log(GPR_DEBUG, "write: %s", str); + grpc_error_free_string(str); + } + + grpc_closure_run(exec_ctx, cb, error); TCP_UNREF(exec_ctx, tcp, "write"); - GRPC_ERROR_UNREF(error); } } @@ -425,8 +431,16 @@ static void tcp_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep, if (!tcp_flush(tcp, &error)) { TCP_REF(tcp, "write"); tcp->write_cb = cb; + if (grpc_tcp_trace) { + gpr_log(GPR_DEBUG, "write: delayed"); + } grpc_fd_notify_on_write(exec_ctx, tcp->em_fd, &tcp->write_closure); } else { + if (grpc_tcp_trace) { + const char *str = grpc_error_string(error); + gpr_log(GPR_DEBUG, "write: %s", str); + grpc_error_free_string(str); + } grpc_exec_ctx_sched(exec_ctx, cb, error, NULL); } diff --git a/src/core/lib/iomgr/workqueue.h b/src/core/lib/iomgr/workqueue.h index 7156e490d7..5b96d1d851 100644 --- a/src/core/lib/iomgr/workqueue.h +++ b/src/core/lib/iomgr/workqueue.h @@ -40,20 +40,12 @@ #include "src/core/lib/iomgr/pollset.h" #include "src/core/lib/iomgr/pollset_set.h" -#ifdef GPR_POSIX_SOCKET -#include "src/core/lib/iomgr/workqueue_posix.h" -#endif - #ifdef GPR_WINDOWS #include "src/core/lib/iomgr/workqueue_windows.h" #endif /* grpc_workqueue is forward declared in exec_ctx.h */ -/* Deprecated: do not use. - This has *already* been removed in a future commit. */ -void grpc_workqueue_flush(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue); - /* Reference counting functions. Use the macro's always (GRPC_WORKQUEUE_{REF,UNREF}). @@ -62,20 +54,20 @@ void grpc_workqueue_flush(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue); string will be printed alongside the refcount. When it is not defined, the string will be discarded at compilation time. */ -//#define GRPC_WORKQUEUE_REFCOUNT_DEBUG +/*#define GRPC_WORKQUEUE_REFCOUNT_DEBUG*/ #ifdef GRPC_WORKQUEUE_REFCOUNT_DEBUG #define GRPC_WORKQUEUE_REF(p, r) \ - (grpc_workqueue_ref((p), __FILE__, __LINE__, (r)), (p)) + grpc_workqueue_ref((p), __FILE__, __LINE__, (r)) #define GRPC_WORKQUEUE_UNREF(exec_ctx, p, r) \ grpc_workqueue_unref((exec_ctx), (p), __FILE__, __LINE__, (r)) -void grpc_workqueue_ref(grpc_workqueue *workqueue, const char *file, int line, - const char *reason); +grpc_workqueue *grpc_workqueue_ref(grpc_workqueue *workqueue, const char *file, + int line, const char *reason); void grpc_workqueue_unref(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue, const char *file, int line, const char *reason); #else -#define GRPC_WORKQUEUE_REF(p, r) (grpc_workqueue_ref((p)), (p)) +#define GRPC_WORKQUEUE_REF(p, r) grpc_workqueue_ref((p)) #define GRPC_WORKQUEUE_UNREF(cl, p, r) grpc_workqueue_unref((cl), (p)) -void grpc_workqueue_ref(grpc_workqueue *workqueue); +grpc_workqueue *grpc_workqueue_ref(grpc_workqueue *workqueue); void grpc_workqueue_unref(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue); #endif diff --git a/src/core/lib/iomgr/workqueue_posix.c b/src/core/lib/iomgr/workqueue_posix.c deleted file mode 100644 index e0d6dac230..0000000000 --- a/src/core/lib/iomgr/workqueue_posix.c +++ /dev/null @@ -1,151 +0,0 @@ -/* - * - * Copyright 2015, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -#include <grpc/support/port_platform.h> - -#ifdef GPR_POSIX_SOCKET - -#include "src/core/lib/iomgr/workqueue.h" - -#include <stdio.h> - -#include <grpc/support/alloc.h> -#include <grpc/support/log.h> -#include <grpc/support/useful.h> - -#include "src/core/lib/iomgr/ev_posix.h" - -static void on_readable(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error); - -grpc_error *grpc_workqueue_create(grpc_exec_ctx *exec_ctx, - grpc_workqueue **workqueue) { - char name[32]; - *workqueue = gpr_malloc(sizeof(grpc_workqueue)); - gpr_ref_init(&(*workqueue)->refs, 1); - gpr_mu_init(&(*workqueue)->mu); - (*workqueue)->closure_list.head = (*workqueue)->closure_list.tail = NULL; - grpc_error *err = grpc_wakeup_fd_init(&(*workqueue)->wakeup_fd); - if (err != GRPC_ERROR_NONE) { - gpr_free(*workqueue); - return err; - } - sprintf(name, "workqueue:%p", (void *)(*workqueue)); - (*workqueue)->wakeup_read_fd = grpc_fd_create( - GRPC_WAKEUP_FD_GET_READ_FD(&(*workqueue)->wakeup_fd), name); - grpc_closure_init(&(*workqueue)->read_closure, on_readable, *workqueue); - grpc_fd_notify_on_read(exec_ctx, (*workqueue)->wakeup_read_fd, - &(*workqueue)->read_closure); - return GRPC_ERROR_NONE; -} - -static void workqueue_destroy(grpc_exec_ctx *exec_ctx, - grpc_workqueue *workqueue) { - grpc_exec_ctx_enqueue_list(exec_ctx, &workqueue->closure_list, NULL); - grpc_fd_shutdown(exec_ctx, workqueue->wakeup_read_fd); -} - -#ifdef GRPC_WORKQUEUE_REFCOUNT_DEBUG -void grpc_workqueue_ref(grpc_workqueue *workqueue, const char *file, int line, - const char *reason) { - gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG, "WORKQUEUE:%p ref %d -> %d %s", - workqueue, (int)workqueue->refs.count, (int)workqueue->refs.count + 1, - reason); -#else -void grpc_workqueue_ref(grpc_workqueue *workqueue) { -#endif - gpr_ref(&workqueue->refs); -} - -#ifdef GRPC_WORKQUEUE_REFCOUNT_DEBUG -void grpc_workqueue_unref(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue, - const char *file, int line, const char *reason) { - gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG, "WORKQUEUE:%p unref %d -> %d %s", - workqueue, (int)workqueue->refs.count, (int)workqueue->refs.count - 1, - reason); -#else -void grpc_workqueue_unref(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue) { -#endif - if (gpr_unref(&workqueue->refs)) { - workqueue_destroy(exec_ctx, workqueue); - } -} - -void grpc_workqueue_flush(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue) { - gpr_mu_lock(&workqueue->mu); - grpc_exec_ctx_enqueue_list(exec_ctx, &workqueue->closure_list, NULL); - gpr_mu_unlock(&workqueue->mu); -} - -static void on_readable(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) { - grpc_workqueue *workqueue = arg; - - if (error != GRPC_ERROR_NONE) { - gpr_mu_destroy(&workqueue->mu); - /* HACK: let wakeup_fd code know that we stole the fd */ - workqueue->wakeup_fd.read_fd = 0; - grpc_wakeup_fd_destroy(&workqueue->wakeup_fd); - grpc_fd_orphan(exec_ctx, workqueue->wakeup_read_fd, NULL, NULL, "destroy"); - gpr_free(workqueue); - } else { - gpr_mu_lock(&workqueue->mu); - grpc_exec_ctx_enqueue_list(exec_ctx, &workqueue->closure_list, NULL); - error = grpc_wakeup_fd_consume_wakeup(&workqueue->wakeup_fd); - gpr_mu_unlock(&workqueue->mu); - if (error == GRPC_ERROR_NONE) { - grpc_fd_notify_on_read(exec_ctx, workqueue->wakeup_read_fd, - &workqueue->read_closure); - } else { - /* recurse to get error handling */ - on_readable(exec_ctx, arg, error); - } - } -} - -void grpc_workqueue_enqueue(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue, - grpc_closure *closure, grpc_error *error) { - grpc_error *push_error = GRPC_ERROR_NONE; - gpr_mu_lock(&workqueue->mu); - if (grpc_closure_list_empty(workqueue->closure_list)) { - push_error = grpc_wakeup_fd_wakeup(&workqueue->wakeup_fd); - } - grpc_closure_list_append(&workqueue->closure_list, closure, error); - if (push_error != GRPC_ERROR_NONE) { - const char *msg = grpc_error_string(push_error); - gpr_log(GPR_ERROR, "Failed to push to workqueue: %s", msg); - grpc_error_free_string(msg); - grpc_exec_ctx_enqueue_list(exec_ctx, &workqueue->closure_list, NULL); - } - gpr_mu_unlock(&workqueue->mu); -} - -#endif /* GPR_POSIX_SOCKET */ diff --git a/src/core/lib/iomgr/workqueue_windows.c b/src/core/lib/iomgr/workqueue_windows.c index 23e2dea185..5c93d3c59e 100644 --- a/src/core/lib/iomgr/workqueue_windows.c +++ b/src/core/lib/iomgr/workqueue_windows.c @@ -42,15 +42,17 @@ // context, which is at least correct, if not performant or in the spirit of // workqueues. -void grpc_workqueue_flush(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue) {} - #ifdef GRPC_WORKQUEUE_REFCOUNT_DEBUG -void grpc_workqueue_ref(grpc_workqueue *workqueue, const char *file, int line, - const char *reason) {} +grpc_workqueue *grpc_workqueue_ref(grpc_workqueue *workqueue, const char *file, + int line, const char *reason) { + return workqueue; +} void grpc_workqueue_unref(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue, const char *file, int line, const char *reason) {} #else -void grpc_workqueue_ref(grpc_workqueue *workqueue) {} +grpc_workqueue *grpc_workqueue_ref(grpc_workqueue *workqueue) { + return workqueue; +} void grpc_workqueue_unref(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue) {} #endif diff --git a/src/core/lib/profiling/basic_timers.c b/src/core/lib/profiling/basic_timers.c index 51813d0461..bdf9af2339 100644 --- a/src/core/lib/profiling/basic_timers.c +++ b/src/core/lib/profiling/basic_timers.c @@ -83,6 +83,7 @@ static int g_shutdown; static gpr_thd_id g_writing_thread; static __thread int g_thread_id; static int g_next_thread_id; +static int g_writing_enabled = 1; static int timer_log_push_back(gpr_timer_log_list *list, gpr_timer_log *log) { if (list->head == NULL) { @@ -177,7 +178,7 @@ static void flush_logs(gpr_timer_log_list *list) { } } -static void finish_writing() { +static void finish_writing(void) { pthread_mutex_lock(&g_mu); g_shutdown = 1; pthread_cond_signal(&g_cv); @@ -230,6 +231,10 @@ static void gpr_timers_log_add(const char *tagstr, marker_type type, int important, const char *file, int line) { gpr_timer_entry *entry; + if (!g_writing_enabled) { + return; + } + if (g_thread_log == NULL || g_thread_log->num_entries == MAX_COUNT) { rotate_log(); } @@ -261,6 +266,8 @@ void gpr_timer_end(const char *tagstr, int important, const char *file, gpr_timers_log_add(tagstr, END, important, file, line); } +void gpr_timer_set_enabled(int enabled) { g_writing_enabled = enabled; } + /* Basic profiler specific API functions. */ void gpr_timers_global_init(void) {} @@ -272,4 +279,6 @@ void gpr_timers_global_init(void) {} void gpr_timers_global_destroy(void) {} void gpr_timers_set_log_filename(const char *filename) {} + +void gpr_timer_set_enabled(int enabled) {} #endif /* GRPC_BASIC_PROFILER */ diff --git a/src/core/lib/profiling/timers.h b/src/core/lib/profiling/timers.h index c8567e8137..ea0cbca977 100644 --- a/src/core/lib/profiling/timers.h +++ b/src/core/lib/profiling/timers.h @@ -34,6 +34,8 @@ #ifndef GRPC_CORE_LIB_PROFILING_TIMERS_H #define GRPC_CORE_LIB_PROFILING_TIMERS_H +#include <stdio.h> + #ifdef __cplusplus extern "C" { #endif @@ -50,18 +52,23 @@ void gpr_timer_end(const char *tagstr, int important, const char *file, void gpr_timers_set_log_filename(const char *filename); +void gpr_timer_set_enabled(int enabled); + #if !(defined(GRPC_STAP_PROFILER) + defined(GRPC_BASIC_PROFILER)) /* No profiling. No-op all the things. */ #define GPR_TIMER_MARK(tag, important) \ do { \ + /*printf("- %s\n", tag);*/ \ } while (0) #define GPR_TIMER_BEGIN(tag, important) \ do { \ + /*printf("%s {\n", tag);*/ \ } while (0) #define GPR_TIMER_END(tag, important) \ do { \ + /*printf("} // %s\n", tag);*/ \ } while (0) #else /* at least one profiler requested... */ diff --git a/src/core/lib/security/transport/client_auth_filter.c b/src/core/lib/security/transport/client_auth_filter.c index 2a1bf4d4e3..b366d1410f 100644 --- a/src/core/lib/security/transport/client_auth_filter.c +++ b/src/core/lib/security/transport/client_auth_filter.c @@ -40,6 +40,7 @@ #include <grpc/support/string_util.h> #include "src/core/lib/channel/channel_stack.h" +#include "src/core/lib/profiling/timers.h" #include "src/core/lib/security/context/security_context.h" #include "src/core/lib/security/credentials/credentials.h" #include "src/core/lib/security/transport/security_connector.h" @@ -218,6 +219,8 @@ static void on_host_checked(grpc_exec_ctx *exec_ctx, void *user_data, static void auth_start_transport_op(grpc_exec_ctx *exec_ctx, grpc_call_element *elem, grpc_transport_stream_op *op) { + GPR_TIMER_BEGIN("auth_start_transport_op", 0); + /* grab pointers to our data from the call element */ call_data *calld = elem->call_data; channel_data *chand = elem->channel_data; @@ -258,12 +261,14 @@ static void auth_start_transport_op(grpc_exec_ctx *exec_ctx, grpc_channel_security_connector_check_call_host( exec_ctx, chand->security_connector, call_host, chand->auth_context, on_host_checked, elem); + GPR_TIMER_END("auth_start_transport_op", 0); return; /* early exit */ } } /* pass control down the stack */ grpc_call_next_op(exec_ctx, elem, op); + GPR_TIMER_END("auth_start_transport_op", 0); } /* Constructor for call_data */ diff --git a/src/core/lib/security/transport/secure_endpoint.c b/src/core/lib/security/transport/secure_endpoint.c index 0169ccd9ef..acb0113ea8 100644 --- a/src/core/lib/security/transport/secure_endpoint.c +++ b/src/core/lib/security/transport/secure_endpoint.c @@ -38,6 +38,7 @@ #include <grpc/support/slice_buffer.h> #include <grpc/support/sync.h> #include "src/core/lib/debug/trace.h" +#include "src/core/lib/profiling/timers.h" #include "src/core/lib/security/transport/tsi_error.h" #include "src/core/lib/support/string.h" #include "src/core/lib/tsi/transport_security_interface.h" @@ -248,6 +249,8 @@ static void flush_write_staging_buffer(secure_endpoint *ep, uint8_t **cur, static void endpoint_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *secure_ep, gpr_slice_buffer *slices, grpc_closure *cb) { + GPR_TIMER_BEGIN("secure_endpoint.endpoint_write", 0); + unsigned i; tsi_result result = TSI_OK; secure_endpoint *ep = (secure_endpoint *)secure_ep; @@ -323,10 +326,12 @@ static void endpoint_write(grpc_exec_ctx *exec_ctx, grpc_endpoint *secure_ep, exec_ctx, cb, grpc_set_tsi_error_result(GRPC_ERROR_CREATE("Wrap failed"), result), NULL); + GPR_TIMER_END("secure_endpoint.endpoint_write", 0); return; } grpc_endpoint_write(exec_ctx, ep->wrapped_ep, &ep->output_buffer, cb); + GPR_TIMER_END("secure_endpoint.endpoint_write", 0); } static void endpoint_shutdown(grpc_exec_ctx *exec_ctx, diff --git a/src/core/lib/security/transport/server_auth_filter.c b/src/core/lib/security/transport/server_auth_filter.c index def16c8229..b2c6815af8 100644 --- a/src/core/lib/security/transport/server_auth_filter.c +++ b/src/core/lib/security/transport/server_auth_filter.c @@ -48,7 +48,7 @@ typedef struct call_data { up-call on transport_op, and remember to call our on_done_recv member after handling it. */ grpc_closure auth_on_recv; - grpc_transport_stream_op transport_op; + grpc_transport_stream_op *transport_op; grpc_metadata_array md; const grpc_metadata *consumed_md; size_t num_consumed_md; @@ -106,6 +106,10 @@ static grpc_mdelem *remove_consumed_md(void *user_data, grpc_mdelem *md) { return md; } +static void destroy_op(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) { + gpr_free(arg); +} + /* called from application code */ static void on_md_processing_done( void *user_data, const grpc_metadata *consumed_md, size_t num_consumed_md, @@ -131,21 +135,22 @@ static void on_md_processing_done( grpc_exec_ctx_sched(&exec_ctx, calld->on_done_recv, GRPC_ERROR_NONE, NULL); } else { gpr_slice message; - grpc_transport_stream_op close_op; - memset(&close_op, 0, sizeof(close_op)); + grpc_transport_stream_op *close_op = gpr_malloc(sizeof(*close_op)); + memset(close_op, 0, sizeof(*close_op)); grpc_metadata_array_destroy(&calld->md); error_details = error_details != NULL ? error_details : "Authentication metadata processing failed."; message = gpr_slice_from_copied_string(error_details); - calld->transport_op.send_initial_metadata = NULL; - if (calld->transport_op.send_message != NULL) { - grpc_byte_stream_destroy(&exec_ctx, calld->transport_op.send_message); - calld->transport_op.send_message = NULL; + calld->transport_op->send_initial_metadata = NULL; + if (calld->transport_op->send_message != NULL) { + grpc_byte_stream_destroy(&exec_ctx, calld->transport_op->send_message); + calld->transport_op->send_message = NULL; } - calld->transport_op.send_trailing_metadata = NULL; - grpc_transport_stream_op_add_close(&close_op, status, &message); - grpc_call_next_op(&exec_ctx, elem, &close_op); + calld->transport_op->send_trailing_metadata = NULL; + close_op->on_complete = grpc_closure_create(destroy_op, close_op); + grpc_transport_stream_op_add_close(close_op, status, &message); + grpc_call_next_op(&exec_ctx, elem, close_op); grpc_exec_ctx_sched(&exec_ctx, calld->on_done_recv, grpc_error_set_int(GRPC_ERROR_CREATE(error_details), GRPC_ERROR_INT_GRPC_STATUS, status), @@ -182,7 +187,7 @@ static void set_recv_ops_md_callbacks(grpc_call_element *elem, calld->recv_initial_metadata = op->recv_initial_metadata; calld->on_done_recv = op->recv_initial_metadata_ready; op->recv_initial_metadata_ready = &calld->auth_on_recv; - calld->transport_op = *op; + calld->transport_op = op; } } diff --git a/src/core/lib/support/log.c b/src/core/lib/support/log.c index 899f1218b6..af1651dae5 100644 --- a/src/core/lib/support/log.c +++ b/src/core/lib/support/log.c @@ -60,8 +60,9 @@ const char *gpr_log_severity_string(gpr_log_severity severity) { void gpr_log_message(const char *file, int line, gpr_log_severity severity, const char *message) { - if ((gpr_atm)severity < gpr_atm_no_barrier_load(&g_min_severity_to_print)) + if ((gpr_atm)severity < gpr_atm_no_barrier_load(&g_min_severity_to_print)) { return; + } gpr_log_func_args lfargs; memset(&lfargs, 0, sizeof(lfargs)); @@ -82,11 +83,11 @@ void gpr_log_verbosity_init() { gpr_atm min_severity_to_print = GPR_LOG_SEVERITY_ERROR; if (verbosity != NULL) { - if (strcmp(verbosity, "DEBUG") == 0) { + if (gpr_stricmp(verbosity, "DEBUG") == 0) { min_severity_to_print = (gpr_atm)GPR_LOG_SEVERITY_DEBUG; - } else if (strcmp(verbosity, "INFO") == 0) { + } else if (gpr_stricmp(verbosity, "INFO") == 0) { min_severity_to_print = (gpr_atm)GPR_LOG_SEVERITY_INFO; - } else if (strcmp(verbosity, "ERROR") == 0) { + } else if (gpr_stricmp(verbosity, "ERROR") == 0) { min_severity_to_print = (gpr_atm)GPR_LOG_SEVERITY_ERROR; } gpr_free(verbosity); diff --git a/src/core/lib/support/mpscq.c b/src/core/lib/support/mpscq.c new file mode 100644 index 0000000000..5b9323275a --- /dev/null +++ b/src/core/lib/support/mpscq.c @@ -0,0 +1,83 @@ +/* + * + * Copyright 2016, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include "src/core/lib/support/mpscq.h" + +#include <grpc/support/log.h> + +void gpr_mpscq_init(gpr_mpscq *q) { + gpr_atm_no_barrier_store(&q->head, (gpr_atm)&q->stub); + q->tail = &q->stub; + gpr_atm_no_barrier_store(&q->stub.next, (gpr_atm)NULL); +} + +void gpr_mpscq_destroy(gpr_mpscq *q) { + GPR_ASSERT(gpr_atm_no_barrier_load(&q->head) == (gpr_atm)&q->stub); + GPR_ASSERT(q->tail == &q->stub); +} + +void gpr_mpscq_push(gpr_mpscq *q, gpr_mpscq_node *n) { + gpr_atm_no_barrier_store(&n->next, (gpr_atm)NULL); + gpr_mpscq_node *prev = + (gpr_mpscq_node *)gpr_atm_full_xchg(&q->head, (gpr_atm)n); + gpr_atm_rel_store(&prev->next, (gpr_atm)n); +} + +gpr_mpscq_node *gpr_mpscq_pop(gpr_mpscq *q) { + gpr_mpscq_node *tail = q->tail; + gpr_mpscq_node *next = (gpr_mpscq_node *)gpr_atm_acq_load(&tail->next); + if (tail == &q->stub) { + // indicates the list is actually (ephemerally) empty + if (next == NULL) return NULL; + q->tail = next; + tail = next; + next = (gpr_mpscq_node *)gpr_atm_acq_load(&tail->next); + } + if (next != NULL) { + q->tail = next; + return tail; + } + gpr_mpscq_node *head = (gpr_mpscq_node *)gpr_atm_acq_load(&q->head); + if (tail != head) { + // indicates a retry is in order: we're still adding + return NULL; + } + gpr_mpscq_push(q, &q->stub); + next = (gpr_mpscq_node *)gpr_atm_acq_load(&tail->next); + if (next != NULL) { + q->tail = next; + return tail; + } + // indicates a retry is in order: we're still adding + return NULL; +} diff --git a/src/core/lib/iomgr/workqueue_posix.h b/src/core/lib/support/mpscq.h index 0f26ba58e2..977a117952 100644 --- a/src/core/lib/iomgr/workqueue_posix.h +++ b/src/core/lib/support/mpscq.h @@ -1,6 +1,6 @@ /* * - * Copyright 2015, Google Inc. + * Copyright 2016, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -31,28 +31,35 @@ * */ -#ifndef GRPC_CORE_LIB_IOMGR_WORKQUEUE_POSIX_H -#define GRPC_CORE_LIB_IOMGR_WORKQUEUE_POSIX_H +#ifndef GRPC_CORE_LIB_SUPPORT_MPSCQ_H +#define GRPC_CORE_LIB_SUPPORT_MPSCQ_H -#include "src/core/lib/iomgr/wakeup_fd_posix.h" +#include <grpc/support/atm.h> +#include <stddef.h> -struct grpc_fd; +// Multiple-producer single-consumer lock free queue, based upon the +// implementation from Dmitry Vyukov here: +// http://www.1024cores.net/home/lock-free-algorithms/queues/intrusive-mpsc-node-based-queue -struct grpc_workqueue { - gpr_refcount refs; +// List node (include this in a data structure at the top, and add application +// fields after it - to simulate inheritance) +typedef struct gpr_mpscq_node { gpr_atm next; } gpr_mpscq_node; - gpr_mu mu; - grpc_closure_list closure_list; +// Actual queue type +typedef struct gpr_mpscq { + gpr_atm head; + // make sure head & tail don't share a cacheline + char padding[GPR_CACHELINE_SIZE]; + gpr_mpscq_node *tail; + gpr_mpscq_node stub; +} gpr_mpscq; - grpc_wakeup_fd wakeup_fd; - struct grpc_fd *wakeup_read_fd; +void gpr_mpscq_init(gpr_mpscq *q); +void gpr_mpscq_destroy(gpr_mpscq *q); +// Push a node +void gpr_mpscq_push(gpr_mpscq *q, gpr_mpscq_node *n); +// Pop a node (returns NULL if no node is ready - which doesn't indicate that +// the queue is empty!!) +gpr_mpscq_node *gpr_mpscq_pop(gpr_mpscq *q); - grpc_closure read_closure; -}; - -/** Create a work queue. Returns an error if creation fails. If creation - succeeds, sets *workqueue to point to it. */ -grpc_error *grpc_workqueue_create(grpc_exec_ctx *exec_ctx, - grpc_workqueue **workqueue); - -#endif /* GRPC_CORE_LIB_IOMGR_WORKQUEUE_POSIX_H */ +#endif /* GRPC_CORE_LIB_SUPPORT_MPSCQ_H */ diff --git a/src/core/lib/support/string.c b/src/core/lib/support/string.c index 30c1e67647..d17fb9da4b 100644 --- a/src/core/lib/support/string.c +++ b/src/core/lib/support/string.c @@ -304,3 +304,14 @@ void gpr_strvec_add(gpr_strvec *sv, char *str) { char *gpr_strvec_flatten(gpr_strvec *sv, size_t *final_length) { return gpr_strjoin((const char **)sv->strs, sv->count, final_length); } + +int gpr_stricmp(const char *a, const char *b) { + int ca, cb; + do { + ca = tolower(*a); + cb = tolower(*b); + ++a; + ++b; + } while (ca == cb && ca && cb); + return ca - cb; +} diff --git a/src/core/lib/support/string.h b/src/core/lib/support/string.h index 2b6bb3eec6..3aebc083ac 100644 --- a/src/core/lib/support/string.h +++ b/src/core/lib/support/string.h @@ -118,6 +118,8 @@ void gpr_strvec_add(gpr_strvec *strs, char *add); total_length as per gpr_strjoin */ char *gpr_strvec_flatten(gpr_strvec *strs, size_t *total_length); +int gpr_stricmp(const char *a, const char *b); + #ifdef __cplusplus } #endif diff --git a/src/core/lib/surface/call.c b/src/core/lib/surface/call.c index 772681109a..97bfd587d2 100644 --- a/src/core/lib/surface/call.c +++ b/src/core/lib/surface/call.c @@ -109,6 +109,10 @@ typedef struct batch_control { uint8_t recv_message; uint8_t recv_final_op; uint8_t is_notify_tag_closure; + + /* TODO(ctiller): now that this is inlined, figure out how much of the above + state can be eliminated */ + grpc_transport_stream_op op; } batch_control; struct grpc_call { @@ -226,33 +230,33 @@ static void destroy_call(grpc_exec_ctx *exec_ctx, void *call_stack, static void receiving_slice_ready(grpc_exec_ctx *exec_ctx, void *bctlp, grpc_error *error); -grpc_call *grpc_call_create( - grpc_channel *channel, grpc_call *parent_call, uint32_t propagation_mask, - grpc_completion_queue *cq, grpc_pollset_set *pollset_set_alternative, - const void *server_transport_data, grpc_mdelem **add_initial_metadata, - size_t add_initial_metadata_count, gpr_timespec send_deadline) { +grpc_error *grpc_call_create(const grpc_call_create_args *args, + grpc_call **out_call) { size_t i, j; - grpc_channel_stack *channel_stack = grpc_channel_get_channel_stack(channel); + grpc_channel_stack *channel_stack = + grpc_channel_get_channel_stack(args->channel); grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; grpc_call *call; GPR_TIMER_BEGIN("grpc_call_create", 0); - call = gpr_malloc(sizeof(grpc_call) + channel_stack->call_stack_size); + *out_call = call = + gpr_malloc(sizeof(grpc_call) + channel_stack->call_stack_size); memset(call, 0, sizeof(grpc_call)); gpr_mu_init(&call->mu); - call->channel = channel; - call->cq = cq; - call->parent = parent_call; + call->channel = args->channel; + call->cq = args->cq; + call->parent = args->parent_call; /* Always support no compression */ GPR_BITSET(&call->encodings_accepted_by_peer, GRPC_COMPRESS_NONE); - call->is_client = server_transport_data == NULL; + call->is_client = args->server_transport_data == NULL; if (call->is_client) { - GPR_ASSERT(add_initial_metadata_count < MAX_SEND_EXTRA_METADATA_COUNT); - for (i = 0; i < add_initial_metadata_count; i++) { - call->send_extra_metadata[i].md = add_initial_metadata[i]; + GPR_ASSERT(args->add_initial_metadata_count < + MAX_SEND_EXTRA_METADATA_COUNT); + for (i = 0; i < args->add_initial_metadata_count; i++) { + call->send_extra_metadata[i].md = args->add_initial_metadata[i]; } - call->send_extra_metadata_count = (int)add_initial_metadata_count; + call->send_extra_metadata_count = (int)args->add_initial_metadata_count; } else { - GPR_ASSERT(add_initial_metadata_count == 0); + GPR_ASSERT(args->add_initial_metadata_count == 0); call->send_extra_metadata_count = 0; } for (i = 0; i < 2; i++) { @@ -261,78 +265,79 @@ grpc_call *grpc_call_create( } } call->send_deadline = - gpr_convert_clock_type(send_deadline, GPR_CLOCK_MONOTONIC); - GRPC_CHANNEL_INTERNAL_REF(channel, "call"); + gpr_convert_clock_type(args->send_deadline, GPR_CLOCK_MONOTONIC); + GRPC_CHANNEL_INTERNAL_REF(args->channel, "call"); /* initial refcount dropped by grpc_call_destroy */ grpc_error *error = grpc_call_stack_init( &exec_ctx, channel_stack, 1, destroy_call, call, call->context, - server_transport_data, CALL_STACK_FROM_CALL(call)); + args->server_transport_data, CALL_STACK_FROM_CALL(call)); if (error != GRPC_ERROR_NONE) { intptr_t status; - if (!grpc_error_get_int(error, GRPC_ERROR_INT_GRPC_STATUS, &status)) + if (!grpc_error_get_int(error, GRPC_ERROR_INT_GRPC_STATUS, &status)) { status = GRPC_STATUS_UNKNOWN; + } const char *error_str = grpc_error_get_str(error, GRPC_ERROR_STR_DESCRIPTION); close_with_status(&exec_ctx, call, (grpc_status_code)status, error_str == NULL ? "unknown error" : error_str); - GRPC_ERROR_UNREF(error); } - if (cq != NULL) { + if (args->cq != NULL) { GPR_ASSERT( - pollset_set_alternative == NULL && + args->pollset_set_alternative == NULL && "Only one of 'cq' and 'pollset_set_alternative' should be non-NULL."); - GRPC_CQ_INTERNAL_REF(cq, "bind"); + GRPC_CQ_INTERNAL_REF(args->cq, "bind"); call->pollent = - grpc_polling_entity_create_from_pollset(grpc_cq_pollset(cq)); + grpc_polling_entity_create_from_pollset(grpc_cq_pollset(args->cq)); } - if (pollset_set_alternative != NULL) { - call->pollent = - grpc_polling_entity_create_from_pollset_set(pollset_set_alternative); + if (args->pollset_set_alternative != NULL) { + call->pollent = grpc_polling_entity_create_from_pollset_set( + args->pollset_set_alternative); } if (!grpc_polling_entity_is_empty(&call->pollent)) { grpc_call_stack_set_pollset_or_pollset_set( &exec_ctx, CALL_STACK_FROM_CALL(call), &call->pollent); } - if (parent_call != NULL) { - GRPC_CALL_INTERNAL_REF(parent_call, "child"); + gpr_timespec send_deadline = args->send_deadline; + if (args->parent_call != NULL) { + GRPC_CALL_INTERNAL_REF(args->parent_call, "child"); GPR_ASSERT(call->is_client); - GPR_ASSERT(!parent_call->is_client); + GPR_ASSERT(!args->parent_call->is_client); - gpr_mu_lock(&parent_call->mu); + gpr_mu_lock(&args->parent_call->mu); - if (propagation_mask & GRPC_PROPAGATE_DEADLINE) { + if (args->propagation_mask & GRPC_PROPAGATE_DEADLINE) { send_deadline = gpr_time_min( gpr_convert_clock_type(send_deadline, - parent_call->send_deadline.clock_type), - parent_call->send_deadline); + args->parent_call->send_deadline.clock_type), + args->parent_call->send_deadline); } /* for now GRPC_PROPAGATE_TRACING_CONTEXT *MUST* be passed with * GRPC_PROPAGATE_STATS_CONTEXT */ /* TODO(ctiller): This should change to use the appropriate census start_op * call. */ - if (propagation_mask & GRPC_PROPAGATE_CENSUS_TRACING_CONTEXT) { - GPR_ASSERT(propagation_mask & GRPC_PROPAGATE_CENSUS_STATS_CONTEXT); - grpc_call_context_set(call, GRPC_CONTEXT_TRACING, - parent_call->context[GRPC_CONTEXT_TRACING].value, - NULL); + if (args->propagation_mask & GRPC_PROPAGATE_CENSUS_TRACING_CONTEXT) { + GPR_ASSERT(args->propagation_mask & GRPC_PROPAGATE_CENSUS_STATS_CONTEXT); + grpc_call_context_set( + call, GRPC_CONTEXT_TRACING, + args->parent_call->context[GRPC_CONTEXT_TRACING].value, NULL); } else { - GPR_ASSERT(propagation_mask & GRPC_PROPAGATE_CENSUS_STATS_CONTEXT); + GPR_ASSERT(args->propagation_mask & GRPC_PROPAGATE_CENSUS_STATS_CONTEXT); } - if (propagation_mask & GRPC_PROPAGATE_CANCELLATION) { + if (args->propagation_mask & GRPC_PROPAGATE_CANCELLATION) { call->cancellation_is_inherited = 1; } - if (parent_call->first_child == NULL) { - parent_call->first_child = call; + if (args->parent_call->first_child == NULL) { + args->parent_call->first_child = call; call->sibling_next = call->sibling_prev = call; } else { - call->sibling_next = parent_call->first_child; - call->sibling_prev = parent_call->first_child->sibling_prev; + call->sibling_next = args->parent_call->first_child; + call->sibling_prev = args->parent_call->first_child->sibling_prev; call->sibling_next->sibling_prev = call->sibling_prev->sibling_next = call; } - gpr_mu_unlock(&parent_call->mu); + gpr_mu_unlock(&args->parent_call->mu); } if (gpr_time_cmp(send_deadline, gpr_inf_future(send_deadline.clock_type)) != 0) { @@ -340,7 +345,7 @@ grpc_call *grpc_call_create( } grpc_exec_ctx_finish(&exec_ctx); GPR_TIMER_END("grpc_call_create", 0); - return call; + return error; } void grpc_call_set_completion_queue(grpc_exec_ctx *exec_ctx, grpc_call *call, @@ -778,6 +783,7 @@ typedef struct termination_closure { grpc_error *error; grpc_closure *op_closure; enum { TC_CANCEL, TC_CLOSE } type; + grpc_transport_stream_op op; } termination_closure; static void done_termination(grpc_exec_ctx *exec_ctx, void *tcp, @@ -797,26 +803,24 @@ static void done_termination(grpc_exec_ctx *exec_ctx, void *tcp, } static void send_cancel(grpc_exec_ctx *exec_ctx, void *tcp, grpc_error *error) { - grpc_transport_stream_op op; termination_closure *tc = tcp; - memset(&op, 0, sizeof(op)); - op.cancel_error = tc->error; + memset(&tc->op, 0, sizeof(tc->op)); + tc->op.cancel_error = tc->error; /* reuse closure to catch completion */ grpc_closure_init(&tc->closure, done_termination, tc); - op.on_complete = &tc->closure; - execute_op(exec_ctx, tc->call, &op); + tc->op.on_complete = &tc->closure; + execute_op(exec_ctx, tc->call, &tc->op); } static void send_close(grpc_exec_ctx *exec_ctx, void *tcp, grpc_error *error) { - grpc_transport_stream_op op; termination_closure *tc = tcp; - memset(&op, 0, sizeof(op)); - op.close_error = tc->error; + memset(&tc->op, 0, sizeof(tc->op)); + tc->op.close_error = tc->error; /* reuse closure to catch completion */ grpc_closure_init(&tc->closure, done_termination, tc); - tc->op_closure = op.on_complete; - op.on_complete = &tc->closure; - execute_op(exec_ctx, tc->call, &op); + tc->op_closure = tc->op.on_complete; + tc->op.on_complete = &tc->closure; + execute_op(exec_ctx, tc->call, &tc->op); } static grpc_call_error terminate_with_status(grpc_exec_ctx *exec_ctx, @@ -1086,9 +1090,14 @@ static void finish_batch_completion(grpc_exec_ctx *exec_ctx, void *user_data, static void post_batch_completion(grpc_exec_ctx *exec_ctx, batch_control *bctl) { grpc_call *call = bctl->call; + grpc_error *error = bctl->error; + if (bctl->recv_final_op) { + GRPC_ERROR_UNREF(error); + error = GRPC_ERROR_NONE; + } if (bctl->is_notify_tag_closure) { /* unrefs bctl->error */ - grpc_exec_ctx_sched(exec_ctx, bctl->notify_tag, bctl->error, NULL); + grpc_closure_run(exec_ctx, bctl->notify_tag, error); gpr_mu_lock(&call->mu); bctl->call->used_batches = (uint8_t)(bctl->call->used_batches & @@ -1097,7 +1106,7 @@ static void post_batch_completion(grpc_exec_ctx *exec_ctx, GRPC_CALL_INTERNAL_UNREF(exec_ctx, call, "completion"); } else { /* unrefs bctl->error */ - grpc_cq_end_op(exec_ctx, bctl->call->cq, bctl->notify_tag, bctl->error, + grpc_cq_end_op(exec_ctx, bctl->call->cq, bctl->notify_tag, error, finish_batch_completion, bctl, &bctl->cq_completion); } } @@ -1254,6 +1263,14 @@ static void validate_filtered_metadata(grpc_exec_ctx *exec_ctx, } } +static void add_batch_error(batch_control *bctl, grpc_error *error) { + if (error == GRPC_ERROR_NONE) return; + if (bctl->error == GRPC_ERROR_NONE) { + bctl->error = GRPC_ERROR_CREATE("Call batch operation failed"); + } + bctl->error = grpc_error_add_child(bctl->error, error); +} + static void receiving_initial_metadata_ready(grpc_exec_ctx *exec_ctx, void *bctlp, grpc_error *error) { batch_control *bctl = bctlp; @@ -1261,9 +1278,8 @@ static void receiving_initial_metadata_ready(grpc_exec_ctx *exec_ctx, gpr_mu_lock(&call->mu); - if (error != GRPC_ERROR_NONE) { - bctl->error = GRPC_ERROR_REF(error); - } else { + add_batch_error(bctl, GRPC_ERROR_REF(error)); + if (error == GRPC_ERROR_NONE) { grpc_metadata_batch *md = &call->metadata_batch[1 /* is_receiving */][0 /* is_trailing */]; grpc_metadata_batch_filter(md, recv_initial_filter, call); @@ -1356,8 +1372,7 @@ static void finish_batch(grpc_exec_ctx *exec_ctx, void *bctlp, GRPC_ERROR_UNREF(error); error = GRPC_ERROR_NONE; } - GRPC_ERROR_UNREF(bctl->error); - bctl->error = GRPC_ERROR_REF(error); + add_batch_error(bctl, GRPC_ERROR_REF(error)); gpr_mu_unlock(&call->mu); if (gpr_unref(&bctl->steps_to_complete)) { post_batch_completion(exec_ctx, bctl); @@ -1370,7 +1385,6 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx, grpc_call *call, const grpc_op *ops, size_t nops, void *notify_tag, int is_notify_tag_closure) { - grpc_transport_stream_op stream_op; size_t i; const grpc_op *op; batch_control *bctl; @@ -1384,8 +1398,6 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx, GRPC_CALL_LOG_BATCH(GPR_INFO, call, ops, nops, notify_tag); - memset(&stream_op, 0, sizeof(stream_op)); - /* TODO(ctiller): this feels like it could be made lock-free */ gpr_mu_lock(&call->mu); bctl = allocate_batch_control(call); @@ -1394,6 +1406,10 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx, bctl->notify_tag = notify_tag; bctl->is_notify_tag_closure = (uint8_t)(is_notify_tag_closure != 0); + grpc_transport_stream_op *stream_op = &bctl->op; + memset(stream_op, 0, sizeof(*stream_op)); + stream_op->covered_by_poller = true; + if (nops == 0) { GRPC_CALL_INTERNAL_REF(call, "completion"); bctl->error = GRPC_ERROR_NONE; @@ -1471,9 +1487,9 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx, } /* TODO(ctiller): just make these the same variable? */ call->metadata_batch[0][0].deadline = call->send_deadline; - stream_op.send_initial_metadata = + stream_op->send_initial_metadata = &call->metadata_batch[0 /* is_receiving */][0 /* is_trailing */]; - stream_op.send_initial_metadata_flags = op->flags; + stream_op->send_initial_metadata_flags = op->flags; break; case GRPC_OP_SEND_MESSAGE: if (!are_write_flags_valid(op->flags)) { @@ -1493,7 +1509,7 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx, grpc_slice_buffer_stream_init( &call->sending_stream, &op->data.send_message->data.raw.slice_buffer, op->flags); - stream_op.send_message = &call->sending_stream.base; + stream_op->send_message = &call->sending_stream.base; break; case GRPC_OP_SEND_CLOSE_FROM_CLIENT: /* Flag validation: currently allow no flags */ @@ -1511,7 +1527,7 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx, } bctl->send_final_op = 1; call->sent_final_op = 1; - stream_op.send_trailing_metadata = + stream_op->send_trailing_metadata = &call->metadata_batch[0 /* is_receiving */][1 /* is_trailing */]; break; case GRPC_OP_SEND_STATUS_FROM_SERVER: @@ -1558,7 +1574,7 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx, error = GRPC_CALL_ERROR_INVALID_METADATA; goto done_with_error; } - stream_op.send_trailing_metadata = + stream_op->send_trailing_metadata = &call->metadata_batch[0 /* is_receiving */][1 /* is_trailing */]; break; case GRPC_OP_RECV_INITIAL_METADATA: @@ -1576,9 +1592,9 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx, grpc_closure_init(&call->receiving_initial_metadata_ready, receiving_initial_metadata_ready, bctl); bctl->recv_initial_metadata = 1; - stream_op.recv_initial_metadata = + stream_op->recv_initial_metadata = &call->metadata_batch[1 /* is_receiving */][0 /* is_trailing */]; - stream_op.recv_initial_metadata_ready = + stream_op->recv_initial_metadata_ready = &call->receiving_initial_metadata_ready; num_completion_callbacks_needed++; break; @@ -1595,10 +1611,10 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx, call->receiving_message = 1; bctl->recv_message = 1; call->receiving_buffer = op->data.recv_message; - stream_op.recv_message = &call->receiving_stream; + stream_op->recv_message = &call->receiving_stream; grpc_closure_init(&call->receiving_stream_ready, receiving_stream_ready, bctl); - stream_op.recv_message_ready = &call->receiving_stream_ready; + stream_op->recv_message_ready = &call->receiving_stream_ready; num_completion_callbacks_needed++; break; case GRPC_OP_RECV_STATUS_ON_CLIENT: @@ -1624,9 +1640,9 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx, call->final_op.client.status_details_capacity = op->data.recv_status_on_client.status_details_capacity; bctl->recv_final_op = 1; - stream_op.recv_trailing_metadata = + stream_op->recv_trailing_metadata = &call->metadata_batch[1 /* is_receiving */][1 /* is_trailing */]; - stream_op.collect_stats = + stream_op->collect_stats = &call->final_info.stats.transport_stream_stats; break; case GRPC_OP_RECV_CLOSE_ON_SERVER: @@ -1647,9 +1663,9 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx, call->final_op.server.cancelled = op->data.recv_close_on_server.cancelled; bctl->recv_final_op = 1; - stream_op.recv_trailing_metadata = + stream_op->recv_trailing_metadata = &call->metadata_batch[1 /* is_receiving */][1 /* is_trailing */]; - stream_op.collect_stats = + stream_op->collect_stats = &call->final_info.stats.transport_stream_stats; break; } @@ -1661,12 +1677,12 @@ static grpc_call_error call_start_batch(grpc_exec_ctx *exec_ctx, } gpr_ref_init(&bctl->steps_to_complete, num_completion_callbacks_needed); - stream_op.context = call->context; + stream_op->context = call->context; grpc_closure_init(&bctl->finish_batch, finish_batch, bctl); - stream_op.on_complete = &bctl->finish_batch; + stream_op->on_complete = &bctl->finish_batch; gpr_mu_unlock(&call->mu); - execute_op(exec_ctx, call, &stream_op); + execute_op(exec_ctx, call, stream_op); done: GPR_TIMER_END("grpc_call_start_batch", 0); diff --git a/src/core/lib/surface/call.h b/src/core/lib/surface/call.h index 3a78fe3aa3..18af41b7fb 100644 --- a/src/core/lib/surface/call.h +++ b/src/core/lib/surface/call.h @@ -49,15 +49,29 @@ typedef void (*grpc_ioreq_completion_func)(grpc_exec_ctx *exec_ctx, grpc_call *call, int success, void *user_data); -grpc_call *grpc_call_create(grpc_channel *channel, grpc_call *parent_call, - uint32_t propagation_mask, - grpc_completion_queue *cq, - /* if not NULL, it'll be used in lieu of \a cq */ - grpc_pollset_set *pollset_set_alternative, - const void *server_transport_data, - grpc_mdelem **add_initial_metadata, - size_t add_initial_metadata_count, - gpr_timespec send_deadline); +typedef struct grpc_call_create_args { + grpc_channel *channel; + + grpc_call *parent_call; + uint32_t propagation_mask; + + grpc_completion_queue *cq; + /* if not NULL, it'll be used in lieu of cq */ + grpc_pollset_set *pollset_set_alternative; + + const void *server_transport_data; + + grpc_mdelem **add_initial_metadata; + size_t add_initial_metadata_count; + + gpr_timespec send_deadline; +} grpc_call_create_args; + +/* Create a new call based on \a args. + Regardless of success or failure, always returns a valid new call into *call + */ +grpc_error *grpc_call_create(const grpc_call_create_args *args, + grpc_call **call); void grpc_call_set_completion_queue(grpc_exec_ctx *exec_ctx, grpc_call *call, grpc_completion_queue *cq); diff --git a/src/core/lib/surface/channel.c b/src/core/lib/surface/channel.c index 6d2b1c4935..aa8c052b41 100644 --- a/src/core/lib/surface/channel.c +++ b/src/core/lib/surface/channel.c @@ -208,9 +208,21 @@ static grpc_call *grpc_channel_create_call_internal( send_metadata[num_metadata++] = GRPC_MDELEM_REF(channel->default_authority); } - return grpc_call_create(channel, parent_call, propagation_mask, cq, - pollset_set_alternative, NULL, send_metadata, - num_metadata, deadline); + grpc_call_create_args args; + memset(&args, 0, sizeof(args)); + args.channel = channel; + args.parent_call = parent_call; + args.propagation_mask = propagation_mask; + args.cq = cq; + args.pollset_set_alternative = pollset_set_alternative; + args.server_transport_data = NULL; + args.add_initial_metadata = send_metadata; + args.add_initial_metadata_count = num_metadata; + args.send_deadline = deadline; + + grpc_call *call; + GRPC_LOG_IF_ERROR("call_create", grpc_call_create(&args, &call)); + return call; } grpc_call *grpc_channel_create_call(grpc_channel *channel, @@ -334,14 +346,13 @@ static void destroy_channel(grpc_exec_ctx *exec_ctx, void *arg, } void grpc_channel_destroy(grpc_channel *channel) { - grpc_transport_op op; + grpc_transport_op *op = grpc_make_transport_op(NULL); grpc_channel_element *elem; grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; GRPC_API_TRACE("grpc_channel_destroy(channel=%p)", 1, (channel)); - memset(&op, 0, sizeof(op)); - op.disconnect_with_error = GRPC_ERROR_CREATE("Channel Destroyed"); + op->disconnect_with_error = GRPC_ERROR_CREATE("Channel Destroyed"); elem = grpc_channel_stack_element(CHANNEL_STACK_FROM_CHANNEL(channel), 0); - elem->filter->start_transport_op(&exec_ctx, elem, &op); + elem->filter->start_transport_op(&exec_ctx, elem, op); GRPC_CHANNEL_INTERNAL_UNREF(&exec_ctx, channel, "channel"); diff --git a/src/core/lib/surface/channel_ping.c b/src/core/lib/surface/channel_ping.c index 9818f9d2f2..0d2f01a649 100644 --- a/src/core/lib/surface/channel_ping.c +++ b/src/core/lib/surface/channel_ping.c @@ -61,19 +61,20 @@ static void ping_done(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) { void grpc_channel_ping(grpc_channel *channel, grpc_completion_queue *cq, void *tag, void *reserved) { - grpc_transport_op op; + GRPC_API_TRACE("grpc_channel_ping(channel=%p, cq=%p, tag=%p, reserved=%p)", 4, + (channel, cq, tag, reserved)); + grpc_transport_op *op = grpc_make_transport_op(NULL); ping_result *pr = gpr_malloc(sizeof(*pr)); grpc_channel_element *top_elem = grpc_channel_stack_element(grpc_channel_get_channel_stack(channel), 0); grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; GPR_ASSERT(reserved == NULL); - memset(&op, 0, sizeof(op)); pr->tag = tag; pr->cq = cq; grpc_closure_init(&pr->closure, ping_done, pr); - op.send_ping = &pr->closure; - op.bind_pollset = grpc_cq_pollset(cq); + op->send_ping = &pr->closure; + op->bind_pollset = grpc_cq_pollset(cq); grpc_cq_begin_op(cq, tag); - top_elem->filter->start_transport_op(&exec_ctx, top_elem, &op); + top_elem->filter->start_transport_op(&exec_ctx, top_elem, op); grpc_exec_ctx_finish(&exec_ctx); } diff --git a/src/core/lib/surface/completion_queue.c b/src/core/lib/surface/completion_queue.c index 5978884db8..4e0feb56ac 100644 --- a/src/core/lib/surface/completion_queue.c +++ b/src/core/lib/surface/completion_queue.c @@ -39,6 +39,7 @@ #include <grpc/support/alloc.h> #include <grpc/support/atm.h> #include <grpc/support/log.h> +#include <grpc/support/string_util.h> #include <grpc/support/time.h> #include "src/core/lib/iomgr/pollset.h" @@ -50,6 +51,9 @@ #include "src/core/lib/surface/event_string.h" int grpc_trace_operation_failures; +#ifndef NDEBUG +int grpc_trace_pending_tags; +#endif typedef struct { grpc_pollset_worker **worker; @@ -67,6 +71,9 @@ struct grpc_completion_queue { gpr_refcount pending_events; /** Once owning_refs drops to zero, we will destroy the cq */ gpr_refcount owning_refs; + /** counter of how many things have ever been queued on this completion queue + useful for avoiding locks to check the queue */ + gpr_atm things_queued_ever; /** 0 initially, 1 once we've begun shutting down */ int shutdown; int shutdown_called; @@ -121,15 +128,6 @@ void grpc_cq_global_shutdown(void) { } } -struct grpc_cq_alarm { - grpc_timer alarm; - grpc_cq_completion completion; - /** completion queue where events about this alarm will be posted */ - grpc_completion_queue *cq; - /** user supplied tag */ - void *tag; -}; - grpc_completion_queue *grpc_completion_queue_create(void *reserved) { grpc_completion_queue *cc; GPR_ASSERT(!reserved); @@ -166,6 +164,7 @@ grpc_completion_queue *grpc_completion_queue_create(void *reserved) { cc->is_server_cq = 0; cc->is_non_listening_server_cq = 0; cc->num_pluckers = 0; + gpr_atm_no_barrier_store(&cc->things_queued_ever, 0); #ifndef NDEBUG cc->outstanding_tag_count = 0; #endif @@ -276,6 +275,7 @@ void grpc_cq_end_op(grpc_exec_ctx *exec_ctx, grpc_completion_queue *cc, GPR_ASSERT(found); #endif shutdown = gpr_unref(&cc->pending_events); + gpr_atm_no_barrier_fetch_add(&cc->things_queued_ever, 1); if (!shutdown) { cc->completed_tail->next = ((uintptr_t)storage) | (1u & (uintptr_t)cc->completed_tail->next); @@ -313,13 +313,66 @@ void grpc_cq_end_op(grpc_exec_ctx *exec_ctx, grpc_completion_queue *cc, GRPC_ERROR_UNREF(error); } +typedef struct { + gpr_atm last_seen_things_queued_ever; + grpc_completion_queue *cq; + gpr_timespec deadline; + grpc_cq_completion *stolen_completion; + void *tag; /* for pluck */ + bool first_loop; +} cq_is_finished_arg; + +static bool cq_is_next_finished(grpc_exec_ctx *exec_ctx, void *arg) { + cq_is_finished_arg *a = arg; + grpc_completion_queue *cq = a->cq; + GPR_ASSERT(a->stolen_completion == NULL); + gpr_atm current_last_seen_things_queued_ever = + gpr_atm_no_barrier_load(&cq->things_queued_ever); + if (current_last_seen_things_queued_ever != a->last_seen_things_queued_ever) { + gpr_mu_lock(cq->mu); + a->last_seen_things_queued_ever = + gpr_atm_no_barrier_load(&cq->things_queued_ever); + if (cq->completed_tail != &cq->completed_head) { + a->stolen_completion = (grpc_cq_completion *)cq->completed_head.next; + cq->completed_head.next = a->stolen_completion->next & ~(uintptr_t)1; + if (a->stolen_completion == cq->completed_tail) { + cq->completed_tail = &cq->completed_head; + } + gpr_mu_unlock(cq->mu); + return true; + } + gpr_mu_unlock(cq->mu); + } + return !a->first_loop && + gpr_time_cmp(a->deadline, gpr_now(a->deadline.clock_type)) < 0; +} + +#ifndef NDEBUG +static void dump_pending_tags(grpc_completion_queue *cc) { + if (!grpc_trace_pending_tags) return; + + gpr_strvec v; + gpr_strvec_init(&v); + gpr_strvec_add(&v, gpr_strdup("PENDING TAGS:")); + for (size_t i = 0; i < cc->outstanding_tag_count; i++) { + char *s; + gpr_asprintf(&s, " %p", cc->outstanding_tags[i]); + gpr_strvec_add(&v, s); + } + char *out = gpr_strvec_flatten(&v, NULL); + gpr_strvec_destroy(&v); + gpr_log(GPR_DEBUG, "%s", out); + gpr_free(out); +} +#else +static void dump_pending_tags(grpc_completion_queue *cc) {} +#endif + grpc_event grpc_completion_queue_next(grpc_completion_queue *cc, gpr_timespec deadline, void *reserved) { grpc_event ret; grpc_pollset_worker *worker = NULL; - int first_loop = 1; gpr_timespec now; - grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; GPR_TIMER_BEGIN("grpc_completion_queue_next", 0); @@ -333,11 +386,33 @@ grpc_event grpc_completion_queue_next(grpc_completion_queue *cc, reserved)); GPR_ASSERT(!reserved); + dump_pending_tags(cc); + deadline = gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC); GRPC_CQ_INTERNAL_REF(cc, "next"); gpr_mu_lock(cc->mu); + cq_is_finished_arg is_finished_arg = { + .last_seen_things_queued_ever = + gpr_atm_no_barrier_load(&cc->things_queued_ever), + .cq = cc, + .deadline = deadline, + .stolen_completion = NULL, + .tag = NULL, + .first_loop = true}; + grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT_WITH_FINISH_CHECK( + cq_is_next_finished, &is_finished_arg); for (;;) { + if (is_finished_arg.stolen_completion != NULL) { + gpr_mu_unlock(cc->mu); + grpc_cq_completion *c = is_finished_arg.stolen_completion; + is_finished_arg.stolen_completion = NULL; + ret.type = GRPC_OP_COMPLETE; + ret.success = c->next & 1u; + ret.tag = c->tag; + c->done(&exec_ctx, c->done_arg, c); + break; + } if (cc->completed_tail != &cc->completed_head) { grpc_cq_completion *c = (grpc_cq_completion *)cc->completed_head.next; cc->completed_head.next = c->next & ~(uintptr_t)1; @@ -358,13 +433,13 @@ grpc_event grpc_completion_queue_next(grpc_completion_queue *cc, break; } now = gpr_now(GPR_CLOCK_MONOTONIC); - if (!first_loop && gpr_time_cmp(now, deadline) >= 0) { + if (!is_finished_arg.first_loop && gpr_time_cmp(now, deadline) >= 0) { gpr_mu_unlock(cc->mu); memset(&ret, 0, sizeof(ret)); ret.type = GRPC_QUEUE_TIMEOUT; + dump_pending_tags(cc); break; } - first_loop = 0; /* Check alarms - these are a global resource so we just ping each time through on every pollset. May update deadline to ensure timely wakeups. @@ -387,13 +462,16 @@ grpc_event grpc_completion_queue_next(grpc_completion_queue *cc, GRPC_ERROR_UNREF(err); memset(&ret, 0, sizeof(ret)); ret.type = GRPC_QUEUE_TIMEOUT; + dump_pending_tags(cc); break; } } + is_finished_arg.first_loop = false; } GRPC_SURFACE_TRACE_RETURNED_EVENT(cc, &ret); GRPC_CQ_INTERNAL_UNREF(cc, "next"); grpc_exec_ctx_finish(&exec_ctx); + GPR_ASSERT(is_finished_arg.stolen_completion == NULL); GPR_TIMER_END("grpc_completion_queue_next", 0); @@ -424,6 +502,37 @@ static void del_plucker(grpc_completion_queue *cc, void *tag, GPR_UNREACHABLE_CODE(return ); } +static bool cq_is_pluck_finished(grpc_exec_ctx *exec_ctx, void *arg) { + cq_is_finished_arg *a = arg; + grpc_completion_queue *cq = a->cq; + GPR_ASSERT(a->stolen_completion == NULL); + gpr_atm current_last_seen_things_queued_ever = + gpr_atm_no_barrier_load(&cq->things_queued_ever); + if (current_last_seen_things_queued_ever != a->last_seen_things_queued_ever) { + gpr_mu_lock(cq->mu); + a->last_seen_things_queued_ever = + gpr_atm_no_barrier_load(&cq->things_queued_ever); + grpc_cq_completion *c; + grpc_cq_completion *prev = &cq->completed_head; + while ((c = (grpc_cq_completion *)(prev->next & ~(uintptr_t)1)) != + &cq->completed_head) { + if (c->tag == a->tag) { + prev->next = (prev->next & (uintptr_t)1) | (c->next & ~(uintptr_t)1); + if (c == cq->completed_tail) { + cq->completed_tail = prev; + } + gpr_mu_unlock(cq->mu); + a->stolen_completion = c; + return true; + } + prev = c; + } + gpr_mu_unlock(cq->mu); + } + return !a->first_loop && + gpr_time_cmp(a->deadline, gpr_now(a->deadline.clock_type)) < 0; +} + grpc_event grpc_completion_queue_pluck(grpc_completion_queue *cc, void *tag, gpr_timespec deadline, void *reserved) { grpc_event ret; @@ -431,8 +540,6 @@ grpc_event grpc_completion_queue_pluck(grpc_completion_queue *cc, void *tag, grpc_cq_completion *prev; grpc_pollset_worker *worker = NULL; gpr_timespec now; - int first_loop = 1; - grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; GPR_TIMER_BEGIN("grpc_completion_queue_pluck", 0); @@ -448,11 +555,33 @@ grpc_event grpc_completion_queue_pluck(grpc_completion_queue *cc, void *tag, } GPR_ASSERT(!reserved); + dump_pending_tags(cc); + deadline = gpr_convert_clock_type(deadline, GPR_CLOCK_MONOTONIC); GRPC_CQ_INTERNAL_REF(cc, "pluck"); gpr_mu_lock(cc->mu); + cq_is_finished_arg is_finished_arg = { + .last_seen_things_queued_ever = + gpr_atm_no_barrier_load(&cc->things_queued_ever), + .cq = cc, + .deadline = deadline, + .stolen_completion = NULL, + .tag = tag, + .first_loop = true}; + grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT_WITH_FINISH_CHECK( + cq_is_pluck_finished, &is_finished_arg); for (;;) { + if (is_finished_arg.stolen_completion != NULL) { + gpr_mu_unlock(cc->mu); + c = is_finished_arg.stolen_completion; + is_finished_arg.stolen_completion = NULL; + ret.type = GRPC_OP_COMPLETE; + ret.success = c->next & 1u; + ret.tag = c->tag; + c->done(&exec_ctx, c->done_arg, c); + break; + } prev = &cc->completed_head; while ((c = (grpc_cq_completion *)(prev->next & ~(uintptr_t)1)) != &cc->completed_head) { @@ -485,17 +614,18 @@ grpc_event grpc_completion_queue_pluck(grpc_completion_queue *cc, void *tag, memset(&ret, 0, sizeof(ret)); /* TODO(ctiller): should we use a different result here */ ret.type = GRPC_QUEUE_TIMEOUT; + dump_pending_tags(cc); break; } now = gpr_now(GPR_CLOCK_MONOTONIC); - if (!first_loop && gpr_time_cmp(now, deadline) >= 0) { + if (!is_finished_arg.first_loop && gpr_time_cmp(now, deadline) >= 0) { del_plucker(cc, tag, &worker); gpr_mu_unlock(cc->mu); memset(&ret, 0, sizeof(ret)); ret.type = GRPC_QUEUE_TIMEOUT; + dump_pending_tags(cc); break; } - first_loop = 0; /* Check alarms - these are a global resource so we just ping each time through on every pollset. May update deadline to ensure timely wakeups. @@ -518,15 +648,18 @@ grpc_event grpc_completion_queue_pluck(grpc_completion_queue *cc, void *tag, GRPC_ERROR_UNREF(err); memset(&ret, 0, sizeof(ret)); ret.type = GRPC_QUEUE_TIMEOUT; + dump_pending_tags(cc); break; } } + is_finished_arg.first_loop = false; del_plucker(cc, tag, &worker); } done: GRPC_SURFACE_TRACE_RETURNED_EVENT(cc, &ret); GRPC_CQ_INTERNAL_UNREF(cc, "pluck"); grpc_exec_ctx_finish(&exec_ctx); + GPR_ASSERT(is_finished_arg.stolen_completion == NULL); GPR_TIMER_END("grpc_completion_queue_pluck", 0); diff --git a/src/core/lib/surface/completion_queue.h b/src/core/lib/surface/completion_queue.h index 3049284f68..e9d840df77 100644 --- a/src/core/lib/surface/completion_queue.h +++ b/src/core/lib/surface/completion_queue.h @@ -44,6 +44,9 @@ extern int grpc_cq_pluck_trace; extern int grpc_cq_event_timeout_trace; extern int grpc_trace_operation_failures; +#ifndef NDEBUG +extern int grpc_trace_pending_tags; +#endif typedef struct grpc_cq_completion { /** user supplied tag */ diff --git a/src/core/lib/surface/init.c b/src/core/lib/surface/init.c index 5397913a21..ac111253ef 100644 --- a/src/core/lib/surface/init.c +++ b/src/core/lib/surface/init.c @@ -47,6 +47,7 @@ #include "src/core/lib/channel/http_server_filter.h" #include "src/core/lib/debug/trace.h" #include "src/core/lib/http/parser.h" +#include "src/core/lib/iomgr/combiner.h" #include "src/core/lib/iomgr/executor.h" #include "src/core/lib/iomgr/iomgr.h" #include "src/core/lib/profiling/timers.h" @@ -165,12 +166,16 @@ void grpc_init(void) { grpc_register_tracer("http1", &grpc_http1_trace); grpc_register_tracer("compression", &grpc_compression_trace); grpc_register_tracer("queue_pluck", &grpc_cq_pluck_trace); + grpc_register_tracer("combiner", &grpc_combiner_trace); // Default pluck trace to 1 grpc_cq_pluck_trace = 1; grpc_register_tracer("queue_timeout", &grpc_cq_event_timeout_trace); // Default timeout trace to 1 grpc_cq_event_timeout_trace = 1; grpc_register_tracer("op_failure", &grpc_trace_operation_failures); +#ifndef NDEBUG + grpc_register_tracer("pending_tags", &grpc_trace_pending_tags); +#endif grpc_security_pre_init(); grpc_iomgr_init(); grpc_executor_init(); diff --git a/src/core/lib/surface/lame_client.c b/src/core/lib/surface/lame_client.c index 19b78369dd..d32c884e8e 100644 --- a/src/core/lib/surface/lame_client.c +++ b/src/core/lib/surface/lame_client.c @@ -97,14 +97,14 @@ static void lame_start_transport_op(grpc_exec_ctx *exec_ctx, grpc_exec_ctx_sched(exec_ctx, op->on_connectivity_state_change, GRPC_ERROR_NONE, NULL); } - if (op->on_consumed != NULL) { - grpc_exec_ctx_sched(exec_ctx, op->on_consumed, GRPC_ERROR_NONE, NULL); - } if (op->send_ping != NULL) { grpc_exec_ctx_sched(exec_ctx, op->send_ping, GRPC_ERROR_CREATE("lame client channel"), NULL); } GRPC_ERROR_UNREF(op->disconnect_with_error); + if (op->on_consumed != NULL) { + grpc_exec_ctx_sched(exec_ctx, op->on_consumed, GRPC_ERROR_NONE, NULL); + } } static grpc_error *init_call_elem(grpc_exec_ctx *exec_ctx, diff --git a/src/core/lib/surface/server.c b/src/core/lib/surface/server.c index 55e6d99057..9a9fcddb6e 100644 --- a/src/core/lib/surface/server.c +++ b/src/core/lib/surface/server.c @@ -273,23 +273,21 @@ static void shutdown_cleanup(grpc_exec_ctx *exec_ctx, void *arg, } static void send_shutdown(grpc_exec_ctx *exec_ctx, grpc_channel *channel, - bool send_goaway, grpc_error *send_disconnect) { - grpc_transport_op op; - struct shutdown_cleanup_args *sc; + int send_goaway, grpc_error *send_disconnect) { + struct shutdown_cleanup_args *sc = gpr_malloc(sizeof(*sc)); + grpc_closure_init(&sc->closure, shutdown_cleanup, sc); + grpc_transport_op *op = grpc_make_transport_op(&sc->closure); grpc_channel_element *elem; - memset(&op, 0, sizeof(op)); - op.send_goaway = send_goaway; - sc = gpr_malloc(sizeof(*sc)); + op->send_goaway = send_goaway; + op->set_accept_stream = true; sc->slice = gpr_slice_from_copied_string("Server shutdown"); - op.goaway_message = &sc->slice; - op.goaway_status = GRPC_STATUS_OK; - op.disconnect_with_error = send_disconnect; - grpc_closure_init(&sc->closure, shutdown_cleanup, sc); - op.on_consumed = &sc->closure; + op->goaway_message = &sc->slice; + op->goaway_status = GRPC_STATUS_OK; + op->disconnect_with_error = send_disconnect; elem = grpc_channel_stack_element(grpc_channel_get_channel_stack(channel), 0); - elem->filter->start_transport_op(exec_ctx, elem, &op); + elem->filter->start_transport_op(exec_ctx, elem, op); } static void channel_broadcaster_shutdown(grpc_exec_ctx *exec_ctx, @@ -432,7 +430,8 @@ static void finish_destroy_channel(grpc_exec_ctx *exec_ctx, void *cd, server_unref(exec_ctx, server); } -static void destroy_channel(grpc_exec_ctx *exec_ctx, channel_data *chand) { +static void destroy_channel(grpc_exec_ctx *exec_ctx, channel_data *chand, + grpc_error *error) { if (is_channel_orphaned(chand)) return; GPR_ASSERT(chand->server != NULL); orphan_channel(chand); @@ -441,14 +440,20 @@ static void destroy_channel(grpc_exec_ctx *exec_ctx, channel_data *chand) { chand->finish_destroy_channel_closure.cb = finish_destroy_channel; chand->finish_destroy_channel_closure.cb_arg = chand; - grpc_transport_op op; - memset(&op, 0, sizeof(op)); - op.set_accept_stream = true; - op.on_consumed = &chand->finish_destroy_channel_closure; + if (error != GRPC_ERROR_NONE) { + const char *msg = grpc_error_string(error); + gpr_log(GPR_INFO, "Disconnected client: %s", msg); + grpc_error_free_string(msg); + } + GRPC_ERROR_UNREF(error); + + grpc_transport_op *op = + grpc_make_transport_op(&chand->finish_destroy_channel_closure); + op->set_accept_stream = true; grpc_channel_next_op(exec_ctx, grpc_channel_stack_element( grpc_channel_get_channel_stack(chand->channel), 0), - &op); + op); } static void cpstr(char **dest, size_t *capacity, grpc_mdstr *value) { @@ -769,8 +774,7 @@ static void server_on_recv_initial_metadata(grpc_exec_ctx *exec_ctx, void *ptr, GRPC_ERROR_CREATE_REFERENCING("Missing :authority or :path", &error, 1); } - grpc_exec_ctx_sched(exec_ctx, calld->on_done_recv_initial_metadata, error, - NULL); + grpc_closure_run(exec_ctx, calld->on_done_recv_initial_metadata, error); } static void server_mutate_op(grpc_call_element *elem, @@ -825,11 +829,20 @@ static void accept_stream(grpc_exec_ctx *exec_ctx, void *cd, const void *transport_server_data) { channel_data *chand = cd; /* create a call */ - grpc_call *call = grpc_call_create(chand->channel, NULL, 0, NULL, NULL, - transport_server_data, NULL, 0, - gpr_inf_future(GPR_CLOCK_MONOTONIC)); + grpc_call_create_args args; + memset(&args, 0, sizeof(args)); + args.channel = chand->channel; + args.server_transport_data = transport_server_data; + args.send_deadline = gpr_inf_future(GPR_CLOCK_MONOTONIC); + grpc_call *call; + grpc_error *error = grpc_call_create(&args, &call); grpc_call_element *elem = grpc_call_stack_element(grpc_call_get_call_stack(call), 0); + if (error != GRPC_ERROR_NONE) { + got_initial_metadata(exec_ctx, elem, error); + GRPC_ERROR_UNREF(error); + return; + } call_data *calld = elem->call_data; grpc_op op; memset(&op, 0, sizeof(op)); @@ -845,17 +858,16 @@ static void channel_connectivity_changed(grpc_exec_ctx *exec_ctx, void *cd, channel_data *chand = cd; grpc_server *server = chand->server; if (chand->connectivity_state != GRPC_CHANNEL_SHUTDOWN) { - grpc_transport_op op; - memset(&op, 0, sizeof(op)); - op.on_connectivity_state_change = &chand->channel_connectivity_changed, - op.connectivity_state = &chand->connectivity_state; + grpc_transport_op *op = grpc_make_transport_op(NULL); + op->on_connectivity_state_change = &chand->channel_connectivity_changed, + op->connectivity_state = &chand->connectivity_state; grpc_channel_next_op(exec_ctx, grpc_channel_stack_element( grpc_channel_get_channel_stack(chand->channel), 0), - &op); + op); } else { gpr_mu_lock(&server->mu_global); - destroy_channel(exec_ctx, chand); + destroy_channel(exec_ctx, chand, GRPC_ERROR_REF(error)); gpr_mu_unlock(&server->mu_global); GRPC_CHANNEL_INTERNAL_UNREF(exec_ctx, chand->channel, "connectivity"); } @@ -1119,7 +1131,7 @@ void grpc_server_setup_transport(grpc_exec_ctx *exec_ctx, grpc_server *s, size_t slots; uint32_t probes; uint32_t max_probes = 0; - grpc_transport_op op; + grpc_transport_op *op = NULL; channel = grpc_channel_create(exec_ctx, NULL, args, GRPC_SERVER_CHANNEL, transport); @@ -1179,16 +1191,16 @@ void grpc_server_setup_transport(grpc_exec_ctx *exec_ctx, grpc_server *s, gpr_mu_unlock(&s->mu_global); GRPC_CHANNEL_INTERNAL_REF(channel, "connectivity"); - memset(&op, 0, sizeof(op)); - op.set_accept_stream = true; - op.set_accept_stream_fn = accept_stream; - op.set_accept_stream_user_data = chand; - op.on_connectivity_state_change = &chand->channel_connectivity_changed; - op.connectivity_state = &chand->connectivity_state; + op = grpc_make_transport_op(NULL); + op->set_accept_stream = true; + op->set_accept_stream_fn = accept_stream; + op->set_accept_stream_user_data = chand; + op->on_connectivity_state_change = &chand->channel_connectivity_changed; + op->connectivity_state = &chand->connectivity_state; if (gpr_atm_acq_load(&s->shutdown_flag) != 0) { - op.disconnect_with_error = GRPC_ERROR_CREATE("Server shutdown"); + op->disconnect_with_error = GRPC_ERROR_CREATE("Server shutdown"); } - grpc_transport_perform_op(exec_ctx, transport, &op); + grpc_transport_perform_op(exec_ctx, transport, op); } void done_published_shutdown(grpc_exec_ctx *exec_ctx, void *done_arg, diff --git a/src/core/lib/transport/connectivity_state.c b/src/core/lib/transport/connectivity_state.c index 68d05e3a85..fdb5307814 100644 --- a/src/core/lib/transport/connectivity_state.c +++ b/src/core/lib/transport/connectivity_state.c @@ -180,7 +180,8 @@ void grpc_connectivity_state_set(grpc_exec_ctx *exec_ctx, *w->current = tracker->current_state; tracker->watchers = w->next; if (grpc_connectivity_state_trace) { - gpr_log(GPR_DEBUG, "NOTIFY: %p", w->notify); + gpr_log(GPR_DEBUG, "NOTIFY: %p %s: %p", tracker, tracker->name, + w->notify); } grpc_exec_ctx_sched(exec_ctx, w->notify, GRPC_ERROR_REF(tracker->current_error), NULL); diff --git a/src/core/lib/transport/transport.c b/src/core/lib/transport/transport.c index 857c3909d2..b951218130 100644 --- a/src/core/lib/transport/transport.c +++ b/src/core/lib/transport/transport.c @@ -32,18 +32,23 @@ */ #include "src/core/lib/transport/transport.h" + +#include <string.h> + #include <grpc/support/alloc.h> #include <grpc/support/atm.h> #include <grpc/support/log.h> #include <grpc/support/sync.h> + #include "src/core/lib/support/string.h" #include "src/core/lib/transport/transport_impl.h" #ifdef GRPC_STREAM_REFCOUNT_DEBUG void grpc_stream_ref(grpc_stream_refcount *refcount, const char *reason) { gpr_atm val = gpr_atm_no_barrier_load(&refcount->refs.count); - gpr_log(GPR_DEBUG, "%s %p:%p REF %d->%d %s", refcount->object_type, - refcount, refcount->destroy.cb_arg, val, val + 1, reason); + gpr_log(GPR_DEBUG, "%s %p:%p REF %" PRIdPTR "->%" PRIdPTR " %s", + refcount->object_type, refcount, refcount->destroy.cb_arg, val, + val + 1, reason); #else void grpc_stream_ref(grpc_stream_refcount *refcount) { #endif @@ -54,8 +59,9 @@ void grpc_stream_ref(grpc_stream_refcount *refcount) { void grpc_stream_unref(grpc_exec_ctx *exec_ctx, grpc_stream_refcount *refcount, const char *reason) { gpr_atm val = gpr_atm_no_barrier_load(&refcount->refs.count); - gpr_log(GPR_DEBUG, "%s %p:%p UNREF %d->%d %s", refcount->object_type, - refcount, refcount->destroy.cb_arg, val, val - 1, reason); + gpr_log(GPR_DEBUG, "%s %p:%p UNREF %" PRIdPTR "->%" PRIdPTR " %s", + refcount->object_type, refcount, refcount->destroy.cb_arg, val, + val - 1, reason); #else void grpc_stream_unref(grpc_exec_ctx *exec_ctx, grpc_stream_refcount *refcount) { @@ -247,3 +253,51 @@ void grpc_transport_stream_op_add_close(grpc_transport_stream_op *op, error = grpc_error_set_int(error, GRPC_ERROR_INT_GRPC_STATUS, status); add_error(op, &op->close_error, error); } + +typedef struct { + grpc_closure outer_on_complete; + grpc_closure *inner_on_complete; + grpc_transport_op op; +} made_transport_op; + +static void destroy_made_transport_op(grpc_exec_ctx *exec_ctx, void *arg, + grpc_error *error) { + made_transport_op *op = arg; + grpc_exec_ctx_sched(exec_ctx, op->inner_on_complete, GRPC_ERROR_REF(error), + NULL); + gpr_free(op); +} + +grpc_transport_op *grpc_make_transport_op(grpc_closure *on_complete) { + made_transport_op *op = gpr_malloc(sizeof(*op)); + grpc_closure_init(&op->outer_on_complete, destroy_made_transport_op, op); + op->inner_on_complete = on_complete; + memset(&op->op, 0, sizeof(op->op)); + op->op.on_consumed = &op->outer_on_complete; + return &op->op; +} + +typedef struct { + grpc_closure outer_on_complete; + grpc_closure *inner_on_complete; + grpc_transport_stream_op op; +} made_transport_stream_op; + +static void destroy_made_transport_stream_op(grpc_exec_ctx *exec_ctx, void *arg, + grpc_error *error) { + made_transport_stream_op *op = arg; + grpc_exec_ctx_sched(exec_ctx, op->inner_on_complete, GRPC_ERROR_REF(error), + NULL); + gpr_free(op); +} + +grpc_transport_stream_op *grpc_make_transport_stream_op( + grpc_closure *on_complete) { + made_transport_stream_op *op = gpr_malloc(sizeof(*op)); + grpc_closure_init(&op->outer_on_complete, destroy_made_transport_stream_op, + op); + op->inner_on_complete = on_complete; + memset(&op->op, 0, sizeof(op->op)); + op->op.on_complete = &op->outer_on_complete; + return &op->op; +} diff --git a/src/core/lib/transport/transport.h b/src/core/lib/transport/transport.h index 26ed6cb839..50253ebad1 100644 --- a/src/core/lib/transport/transport.h +++ b/src/core/lib/transport/transport.h @@ -100,6 +100,11 @@ void grpc_transport_move_one_way_stats(grpc_transport_one_way_stats *from, void grpc_transport_move_stats(grpc_transport_stream_stats *from, grpc_transport_stream_stats *to); +typedef struct { + grpc_closure closure; + void *args[2]; +} grpc_transport_private_op_data; + /* Transport stream op: a set of operations to perform on a transport against a single stream */ typedef struct grpc_transport_stream_op { @@ -108,6 +113,10 @@ typedef struct grpc_transport_stream_op { have been completed. */ grpc_closure *on_complete; + /** Is the completion of this op covered by a poller (if false: the op should + complete independently of some pollset being polled) */ + bool covered_by_poller; + /** Send initial metadata to the peer, from the provided metadata batch. idempotent_request MUST be set if this is non-null */ grpc_metadata_batch *send_initial_metadata; @@ -149,6 +158,12 @@ typedef struct grpc_transport_stream_op { /* Indexes correspond to grpc_context_index enum values */ grpc_call_context_element *context; + + /*************************************************************************** + * remaining fields are initialized and used at the discretion of the + * transport implementation */ + + grpc_transport_private_op_data transport_private; } grpc_transport_stream_op; /** Transport op: a set of operations to perform on a transport as a whole */ @@ -182,6 +197,12 @@ typedef struct grpc_transport_op { grpc_pollset_set *bind_pollset_set; /** send a ping, call this back if not NULL */ grpc_closure *send_ping; + + /*************************************************************************** + * remaining fields are initialized and used at the discretion of the + * transport implementation */ + + grpc_transport_private_op_data transport_private; } grpc_transport_op; /* Returns the amount of memory required to store a grpc_stream for this @@ -235,6 +256,7 @@ void grpc_transport_stream_op_add_close(grpc_transport_stream_op *op, gpr_slice *optional_message); char *grpc_transport_stream_op_string(grpc_transport_stream_op *op); +char *grpc_transport_op_string(grpc_transport_op *op); /* Send a batch of operations on a transport @@ -273,6 +295,14 @@ void grpc_transport_destroy(grpc_exec_ctx *exec_ctx, grpc_transport *transport); char *grpc_transport_get_peer(grpc_exec_ctx *exec_ctx, grpc_transport *transport); +/* Allocate a grpc_transport_op, and preconfigure the on_consumed closure to + \a on_consumed and then delete the returned transport op */ +grpc_transport_op *grpc_make_transport_op(grpc_closure *on_consumed); +/* Allocate a grpc_transport_stream_op, and preconfigure the on_consumed closure + to \a on_consumed and then delete the returned transport op */ +grpc_transport_stream_op *grpc_make_transport_stream_op( + grpc_closure *on_consumed); + #ifdef __cplusplus } #endif diff --git a/src/core/lib/transport/transport_op_string.c b/src/core/lib/transport/transport_op_string.c index 138591db2a..8a687d8cd3 100644 --- a/src/core/lib/transport/transport_op_string.c +++ b/src/core/lib/transport/transport_op_string.c @@ -41,6 +41,7 @@ #include <grpc/support/string_util.h> #include <grpc/support/useful.h> #include "src/core/lib/support/string.h" +#include "src/core/lib/transport/connectivity_state.h" /* These routines are here to facilitate debugging - they produce string representations of various transport data structures */ @@ -143,6 +144,82 @@ char *grpc_transport_stream_op_string(grpc_transport_stream_op *op) { return out; } +char *grpc_transport_op_string(grpc_transport_op *op) { + char *tmp; + char *out; + int first = 1; + + gpr_strvec b; + gpr_strvec_init(&b); + + if (op->on_connectivity_state_change != NULL) { + if (!first) gpr_strvec_add(&b, gpr_strdup(" ")); + first = 0; + if (op->connectivity_state != NULL) { + gpr_asprintf(&tmp, "ON_CONNECTIVITY_STATE_CHANGE:p=%p:from=%s", + op->on_connectivity_state_change, + grpc_connectivity_state_name(*op->connectivity_state)); + gpr_strvec_add(&b, tmp); + } else { + gpr_asprintf(&tmp, "ON_CONNECTIVITY_STATE_CHANGE:p=%p:unsubscribe", + op->on_connectivity_state_change); + gpr_strvec_add(&b, tmp); + } + } + + if (op->disconnect_with_error != GRPC_ERROR_NONE) { + if (!first) gpr_strvec_add(&b, gpr_strdup(" ")); + first = 0; + const char *err = grpc_error_string(op->disconnect_with_error); + gpr_asprintf(&tmp, "DISCONNECT:%s", err); + gpr_strvec_add(&b, tmp); + grpc_error_free_string(err); + } + + if (op->send_goaway) { + if (!first) gpr_strvec_add(&b, gpr_strdup(" ")); + first = 0; + char *msg = op->goaway_message == NULL + ? "null" + : gpr_dump_slice(*op->goaway_message, + GPR_DUMP_ASCII | GPR_DUMP_HEX); + gpr_asprintf(&tmp, "SEND_GOAWAY:status=%d:msg=%s", op->goaway_status, msg); + if (op->goaway_message != NULL) gpr_free(msg); + gpr_strvec_add(&b, tmp); + } + + if (op->set_accept_stream) { + if (!first) gpr_strvec_add(&b, gpr_strdup(" ")); + first = 0; + gpr_asprintf(&tmp, "SET_ACCEPT_STREAM:%p(%p,...)", op->set_accept_stream_fn, + op->set_accept_stream_user_data); + gpr_strvec_add(&b, tmp); + } + + if (op->bind_pollset != NULL) { + if (!first) gpr_strvec_add(&b, gpr_strdup(" ")); + first = 0; + gpr_strvec_add(&b, gpr_strdup("BIND_POLLSET")); + } + + if (op->bind_pollset_set != NULL) { + if (!first) gpr_strvec_add(&b, gpr_strdup(" ")); + first = 0; + gpr_strvec_add(&b, gpr_strdup("BIND_POLLSET_SET")); + } + + if (op->send_ping != NULL) { + if (!first) gpr_strvec_add(&b, gpr_strdup(" ")); + first = 0; + gpr_strvec_add(&b, gpr_strdup("SEND_PING")); + } + + out = gpr_strvec_flatten(&b, NULL); + gpr_strvec_destroy(&b); + + return out; +} + void grpc_call_log_op(char *file, int line, gpr_log_severity severity, grpc_call_element *elem, grpc_transport_stream_op *op) { char *str = grpc_transport_stream_op_string(op); diff --git a/src/python/grpcio/grpc_core_dependencies.py b/src/python/grpcio/grpc_core_dependencies.py index be7f30c29b..15a8a10fca 100644 --- a/src/python/grpcio/grpc_core_dependencies.py +++ b/src/python/grpcio/grpc_core_dependencies.py @@ -50,6 +50,7 @@ CORE_SOURCE_FILES = [ 'src/core/lib/support/log_linux.c', 'src/core/lib/support/log_posix.c', 'src/core/lib/support/log_windows.c', + 'src/core/lib/support/mpscq.c', 'src/core/lib/support/murmur_hash.c', 'src/core/lib/support/percent_encoding.c', 'src/core/lib/support/slice.c', @@ -92,6 +93,7 @@ CORE_SOURCE_FILES = [ 'src/core/lib/http/httpcli.c', 'src/core/lib/http/parser.c', 'src/core/lib/iomgr/closure.c', + 'src/core/lib/iomgr/combiner.c', 'src/core/lib/iomgr/endpoint.c', 'src/core/lib/iomgr/endpoint_pair_posix.c', 'src/core/lib/iomgr/endpoint_pair_windows.c', @@ -134,7 +136,6 @@ CORE_SOURCE_FILES = [ 'src/core/lib/iomgr/wakeup_fd_nospecial.c', 'src/core/lib/iomgr/wakeup_fd_pipe.c', 'src/core/lib/iomgr/wakeup_fd_posix.c', - 'src/core/lib/iomgr/workqueue_posix.c', 'src/core/lib/iomgr/workqueue_windows.c', 'src/core/lib/json/json.c', 'src/core/lib/json/json_reader.c', |