diff options
Diffstat (limited to 'src/core')
94 files changed, 4762 insertions, 2939 deletions
diff --git a/src/core/channel/channel_stack.c b/src/core/channel/channel_stack.c index 311f4f08ce..9eec8163f5 100644 --- a/src/core/channel/channel_stack.c +++ b/src/core/channel/channel_stack.c @@ -211,9 +211,3 @@ void grpc_call_element_send_cancel(grpc_call_element *cur_elem) { op.cancel_with_status = GRPC_STATUS_CANCELLED; grpc_call_next_op(cur_elem, &op); } - -void grpc_call_element_recv_status(grpc_call_element *cur_elem, - grpc_status_code status, - const char *message) { - abort(); -} diff --git a/src/core/channel/child_channel.c b/src/core/channel/child_channel.c index 600f7df1bf..6690265d75 100644 --- a/src/core/channel/child_channel.c +++ b/src/core/channel/child_channel.c @@ -157,9 +157,10 @@ static void lb_destroy_channel_elem(grpc_channel_element *elem) { } const grpc_channel_filter grpc_child_channel_top_filter = { - lb_start_transport_op, lb_channel_op, sizeof(lb_call_data), - lb_init_call_elem, lb_destroy_call_elem, sizeof(lb_channel_data), - lb_init_channel_elem, lb_destroy_channel_elem, "child-channel", + lb_start_transport_op, lb_channel_op, + sizeof(lb_call_data), lb_init_call_elem, lb_destroy_call_elem, + sizeof(lb_channel_data), lb_init_channel_elem, lb_destroy_channel_elem, + "child-channel", }; /* grpc_child_channel proper */ diff --git a/src/core/channel/client_channel.c b/src/core/channel/client_channel.c index 42e242ae81..711e105464 100644 --- a/src/core/channel/client_channel.c +++ b/src/core/channel/client_channel.c @@ -39,6 +39,7 @@ #include "src/core/channel/child_channel.h" #include "src/core/channel/connected_channel.h" #include "src/core/iomgr/iomgr.h" +#include "src/core/iomgr/pollset_set.h" #include "src/core/support/string.h" #include <grpc/support/alloc.h> #include <grpc/support/log.h> @@ -101,10 +102,17 @@ struct call_data { static int prepare_activate(grpc_call_element *elem, grpc_child_channel *on_child) { call_data *calld = elem->call_data; + channel_data *chand = elem->channel_data; if (calld->state == CALL_CANCELLED) return 0; /* no more access to calld->s.waiting allowed */ GPR_ASSERT(calld->state == CALL_WAITING); + + if (calld->s.waiting_op.bind_pollset) { + grpc_transport_setup_del_interested_party(chand->transport_setup, + calld->s.waiting_op.bind_pollset); + } + calld->state = CALL_ACTIVE; /* create a child call */ @@ -131,7 +139,11 @@ static void remove_waiting_child(channel_data *chand, call_data *calld) { size_t new_count; size_t i; for (i = 0, new_count = 0; i < chand->waiting_child_count; i++) { - if (chand->waiting_children[i] == calld) continue; + if (chand->waiting_children[i] == calld) { + grpc_transport_setup_del_interested_party( + chand->transport_setup, calld->s.waiting_op.bind_pollset); + continue; + } chand->waiting_children[new_count++] = chand->waiting_children[i]; } GPR_ASSERT(new_count == chand->waiting_child_count - 1 || @@ -145,7 +157,7 @@ static void handle_op_after_cancellation(grpc_call_element *elem, channel_data *chand = elem->channel_data; if (op->send_ops) { grpc_stream_ops_unref_owned_objects(op->send_ops->ops, op->send_ops->nops); - op->on_done_send(op->send_user_data, 0); + op->on_done_send->cb(op->on_done_send->cb_arg, 0); } if (op->recv_ops) { char status[GPR_LTOA_MIN_BUFSIZE]; @@ -164,7 +176,10 @@ static void handle_op_after_cancellation(grpc_call_element *elem, mdb.deadline = gpr_inf_future; grpc_sopb_add_metadata(op->recv_ops, mdb); *op->recv_state = GRPC_STREAM_CLOSED; - op->on_done_recv(op->recv_user_data, 1); + op->on_done_recv->cb(op->on_done_recv->cb_arg, 1); + } + if (op->on_consumed) { + op->on_consumed->cb(op->on_consumed->cb_arg, 0); } } @@ -191,6 +206,7 @@ static void cc_start_transport_op(grpc_call_element *elem, handle_op_after_cancellation(elem, op); } else { calld->state = CALL_WAITING; + calld->s.waiting_op.bind_pollset = NULL; if (chand->active_child) { /* channel is connected - use the connected stack */ if (prepare_activate(elem, chand->active_child)) { @@ -222,6 +238,8 @@ static void cc_start_transport_op(grpc_call_element *elem, } calld->s.waiting_op = *op; chand->waiting_children[chand->waiting_child_count++] = calld; + grpc_transport_setup_add_interested_party(chand->transport_setup, + op->bind_pollset); gpr_mu_unlock(&chand->mu); /* finally initiate transport setup if needed */ @@ -248,15 +266,16 @@ static void cc_start_transport_op(grpc_call_element *elem, calld->s.waiting_op.send_ops = op->send_ops; calld->s.waiting_op.is_last_send = op->is_last_send; calld->s.waiting_op.on_done_send = op->on_done_send; - calld->s.waiting_op.send_user_data = op->send_user_data; } if (op->recv_ops) { calld->s.waiting_op.recv_ops = op->recv_ops; calld->s.waiting_op.recv_state = op->recv_state; calld->s.waiting_op.on_done_recv = op->on_done_recv; - calld->s.waiting_op.recv_user_data = op->recv_user_data; } gpr_mu_unlock(&chand->mu); + if (op->on_consumed) { + op->on_consumed->cb(op->on_consumed->cb_arg, 0); + } } break; case CALL_CANCELLED: @@ -365,12 +384,24 @@ static void init_call_elem(grpc_call_element *elem, /* Destructor for call_data */ static void destroy_call_elem(grpc_call_element *elem) { call_data *calld = elem->call_data; + channel_data *chand = elem->channel_data; /* if the call got activated, we need to destroy the child stack also, and remove it from the in-flight requests tracked by the child_entry we picked */ - if (calld->state == CALL_ACTIVE) { - grpc_child_call_destroy(calld->s.active.child_call); + gpr_mu_lock(&chand->mu); + switch (calld->state) { + case CALL_ACTIVE: + gpr_mu_unlock(&chand->mu); + grpc_child_call_destroy(calld->s.active.child_call); + break; + case CALL_WAITING: + remove_waiting_child(chand, calld); + gpr_mu_unlock(&chand->mu); + break; + default: + gpr_mu_unlock(&chand->mu); + break; } GPR_ASSERT(calld->state != CALL_WAITING); } @@ -416,9 +447,9 @@ static void destroy_channel_elem(grpc_channel_element *elem) { } const grpc_channel_filter grpc_client_channel_filter = { - cc_start_transport_op, channel_op, sizeof(call_data), init_call_elem, - destroy_call_elem, sizeof(channel_data), init_channel_elem, - destroy_channel_elem, "client-channel", + cc_start_transport_op, channel_op, sizeof(call_data), + init_call_elem, destroy_call_elem, sizeof(channel_data), + init_channel_elem, destroy_channel_elem, "client-channel", }; grpc_transport_setup_result grpc_client_channel_transport_setup_complete( diff --git a/src/core/channel/client_setup.c b/src/core/channel/client_setup.c index 6d892d6c92..5be8fa66e9 100644 --- a/src/core/channel/client_setup.c +++ b/src/core/channel/client_setup.c @@ -56,6 +56,9 @@ struct grpc_client_setup { gpr_cv cv; grpc_client_setup_request *active_request; int refs; + /** The set of pollsets that are currently interested in this + connection being established */ + grpc_pollset_set interested_parties; }; struct grpc_client_setup_request { @@ -68,14 +71,22 @@ gpr_timespec grpc_client_setup_request_deadline(grpc_client_setup_request *r) { return r->deadline; } +grpc_pollset_set *grpc_client_setup_get_interested_parties( + grpc_client_setup_request *r) { + return &r->setup->interested_parties; +} + static void destroy_setup(grpc_client_setup *s) { gpr_mu_destroy(&s->mu); gpr_cv_destroy(&s->cv); s->done(s->user_data); grpc_channel_args_destroy(s->args); + grpc_pollset_set_destroy(&s->interested_parties); gpr_free(s); } +static void destroy_request(grpc_client_setup_request *r) { gpr_free(r); } + /* initiate handshaking */ static void setup_initiate(grpc_transport_setup *sp) { grpc_client_setup *s = (grpc_client_setup *)sp; @@ -83,8 +94,7 @@ static void setup_initiate(grpc_transport_setup *sp) { int in_alarm = 0; r->setup = s; - /* TODO(klempner): Actually set a deadline */ - r->deadline = gpr_inf_future; + r->deadline = gpr_time_add(gpr_now(), gpr_time_from_seconds(60)); gpr_mu_lock(&s->mu); GPR_ASSERT(s->refs > 0); @@ -104,10 +114,30 @@ static void setup_initiate(grpc_transport_setup *sp) { if (!in_alarm) { s->initiate(s->user_data, r); } else { - gpr_free(r); + destroy_request(r); } } +/** implementation of add_interested_party for setup vtable */ +static void setup_add_interested_party(grpc_transport_setup *sp, + grpc_pollset *pollset) { + grpc_client_setup *s = (grpc_client_setup *)sp; + + gpr_mu_lock(&s->mu); + grpc_pollset_set_add_pollset(&s->interested_parties, pollset); + gpr_mu_unlock(&s->mu); +} + +/** implementation of del_interested_party for setup vtable */ +static void setup_del_interested_party(grpc_transport_setup *sp, + grpc_pollset *pollset) { + grpc_client_setup *s = (grpc_client_setup *)sp; + + gpr_mu_lock(&s->mu); + grpc_pollset_set_del_pollset(&s->interested_parties, pollset); + gpr_mu_unlock(&s->mu); +} + /* cancel handshaking: cancel all requests, and shutdown (the caller promises not to initiate again) */ static void setup_cancel(grpc_transport_setup *sp) { @@ -137,7 +167,8 @@ static void setup_cancel(grpc_transport_setup *sp) { } } -int grpc_client_setup_cb_begin(grpc_client_setup_request *r) { +int grpc_client_setup_cb_begin(grpc_client_setup_request *r, + const char *reason) { gpr_mu_lock(&r->setup->mu); if (r->setup->cancelled) { gpr_mu_unlock(&r->setup->mu); @@ -148,7 +179,8 @@ int grpc_client_setup_cb_begin(grpc_client_setup_request *r) { return 1; } -void grpc_client_setup_cb_end(grpc_client_setup_request *r) { +void grpc_client_setup_cb_end(grpc_client_setup_request *r, + const char *reason) { gpr_mu_lock(&r->setup->mu); r->setup->in_cb--; if (r->setup->cancelled) gpr_cv_signal(&r->setup->cv); @@ -156,8 +188,9 @@ void grpc_client_setup_cb_end(grpc_client_setup_request *r) { } /* vtable for transport setup */ -static const grpc_transport_setup_vtable setup_vtable = {setup_initiate, - setup_cancel}; +static const grpc_transport_setup_vtable setup_vtable = { + setup_initiate, setup_add_interested_party, setup_del_interested_party, + setup_cancel}; void grpc_client_setup_create_and_attach( grpc_channel_stack *newly_minted_channel, const grpc_channel_args *args, @@ -180,42 +213,44 @@ void grpc_client_setup_create_and_attach( s->in_alarm = 0; s->in_cb = 0; s->cancelled = 0; + grpc_pollset_set_init(&s->interested_parties); grpc_client_channel_set_transport_setup(newly_minted_channel, &s->base); } -int grpc_client_setup_request_should_continue(grpc_client_setup_request *r) { +int grpc_client_setup_request_should_continue(grpc_client_setup_request *r, + const char *reason) { int result; if (gpr_time_cmp(gpr_now(), r->deadline) > 0) { - return 0; + result = 0; + } else { + gpr_mu_lock(&r->setup->mu); + result = r->setup->active_request == r; + gpr_mu_unlock(&r->setup->mu); } - gpr_mu_lock(&r->setup->mu); - result = r->setup->active_request == r; - gpr_mu_unlock(&r->setup->mu); return result; } -static void backoff_alarm_done(void *arg /* grpc_client_setup */, int success) { - grpc_client_setup *s = arg; - grpc_client_setup_request *r = gpr_malloc(sizeof(grpc_client_setup_request)); - r->setup = s; - /* TODO(klempner): Set this to something useful */ - r->deadline = gpr_inf_future; +static void backoff_alarm_done(void *arg /* grpc_client_setup_request */, + int success) { + grpc_client_setup_request *r = arg; + grpc_client_setup *s = r->setup; /* Handle status cancelled? */ gpr_mu_lock(&s->mu); - s->active_request = r; s->in_alarm = 0; - if (!success) { + if (s->active_request != NULL || !success) { if (0 == --s->refs) { gpr_mu_unlock(&s->mu); destroy_setup(s); - gpr_free(r); + destroy_request(r); return; } else { gpr_mu_unlock(&s->mu); + destroy_request(r); return; } } + s->active_request = r; gpr_mu_unlock(&s->mu); s->initiate(s->user_data, r); } @@ -231,16 +266,12 @@ void grpc_client_setup_request_finish(grpc_client_setup_request *r, } else { retry = 0; } + if (!retry && 0 == --s->refs) { gpr_mu_unlock(&s->mu); destroy_setup(s); - gpr_free(r); - return; - } - - gpr_free(r); - - if (retry) { + destroy_request(r); + } else if (retry) { /* TODO(klempner): Replace these values with further consideration. 2x is probably too aggressive of a backoff. */ gpr_timespec max_backoff = gpr_time_from_minutes(2); @@ -248,15 +279,17 @@ void grpc_client_setup_request_finish(grpc_client_setup_request *r, gpr_timespec deadline = gpr_time_add(s->current_backoff_interval, now); GPR_ASSERT(!s->in_alarm); s->in_alarm = 1; - grpc_alarm_init(&s->backoff_alarm, deadline, backoff_alarm_done, s, now); + grpc_alarm_init(&s->backoff_alarm, deadline, backoff_alarm_done, r, now); s->current_backoff_interval = gpr_time_add(s->current_backoff_interval, s->current_backoff_interval); if (gpr_time_cmp(s->current_backoff_interval, max_backoff) > 0) { s->current_backoff_interval = max_backoff; } + gpr_mu_unlock(&s->mu); + } else { + gpr_mu_unlock(&s->mu); + destroy_request(r); } - - gpr_mu_unlock(&s->mu); } const grpc_channel_args *grpc_client_setup_get_channel_args( diff --git a/src/core/channel/client_setup.h b/src/core/channel/client_setup.h index 70137e1365..7d40338840 100644 --- a/src/core/channel/client_setup.h +++ b/src/core/channel/client_setup.h @@ -52,7 +52,8 @@ void grpc_client_setup_create_and_attach( /* Check that r is the active request: needs to be performed at each callback. If this races, we'll have two connection attempts running at once and the old one will get cleaned up in due course, which is fine. */ -int grpc_client_setup_request_should_continue(grpc_client_setup_request *r); +int grpc_client_setup_request_should_continue(grpc_client_setup_request *r, + const char *reason); void grpc_client_setup_request_finish(grpc_client_setup_request *r, int was_successful); const grpc_channel_args *grpc_client_setup_get_channel_args( @@ -61,13 +62,16 @@ const grpc_channel_args *grpc_client_setup_get_channel_args( /* Call before calling back into the setup listener, and call only if this function returns 1. If it returns 1, also promise to call grpc_client_setup_cb_end */ -int grpc_client_setup_cb_begin(grpc_client_setup_request *r); -void grpc_client_setup_cb_end(grpc_client_setup_request *r); +int grpc_client_setup_cb_begin(grpc_client_setup_request *r, + const char *reason); +void grpc_client_setup_cb_end(grpc_client_setup_request *r, const char *reason); /* Get the deadline for a request passed in to initiate. Implementations should make a best effort to honor this deadline. */ gpr_timespec grpc_client_setup_request_deadline(grpc_client_setup_request *r); +grpc_pollset_set *grpc_client_setup_get_interested_parties( + grpc_client_setup_request *r); grpc_mdctx *grpc_client_setup_get_mdctx(grpc_client_setup_request *r); -#endif /* GRPC_INTERNAL_CORE_CHANNEL_CLIENT_SETUP_H */ +#endif /* GRPC_INTERNAL_CORE_CHANNEL_CLIENT_SETUP_H */ diff --git a/src/core/channel/http_client_filter.c b/src/core/channel/http_client_filter.c index 9805f325a6..62a7a1e7d9 100644 --- a/src/core/channel/http_client_filter.c +++ b/src/core/channel/http_client_filter.c @@ -43,8 +43,9 @@ typedef struct call_data { int got_initial_metadata; grpc_stream_op_buffer *recv_ops; - void (*on_done_recv)(void *user_data, int success); - void *recv_user_data; + grpc_iomgr_closure *on_done_recv; + + grpc_iomgr_closure hc_on_recv; } call_data; typedef struct channel_data { @@ -84,7 +85,7 @@ static void hc_on_recv(void *user_data, int success) { grpc_metadata_batch_filter(&op->data.metadata, client_filter, elem); } } - calld->on_done_recv(calld->recv_user_data, success); + calld->on_done_recv->cb(calld->on_done_recv->cb_arg, success); } static void hc_mutate_op(grpc_call_element *elem, grpc_transport_op *op) { @@ -117,9 +118,7 @@ static void hc_mutate_op(grpc_call_element *elem, grpc_transport_op *op) { /* substitute our callback for the higher callback */ calld->recv_ops = op->recv_ops; calld->on_done_recv = op->on_done_recv; - calld->recv_user_data = op->recv_user_data; - op->on_done_recv = hc_on_recv; - op->recv_user_data = elem; + op->on_done_recv = &calld->hc_on_recv; } } @@ -154,6 +153,8 @@ static void init_call_elem(grpc_call_element *elem, call_data *calld = elem->call_data; calld->sent_initial_metadata = 0; calld->got_initial_metadata = 0; + calld->on_done_recv = NULL; + grpc_iomgr_closure_init(&calld->hc_on_recv, hc_on_recv, elem); if (initial_op) hc_mutate_op(elem, initial_op); } diff --git a/src/core/channel/http_server_filter.c b/src/core/channel/http_server_filter.c index 11a53b1e70..e5ce7a5dd8 100644 --- a/src/core/channel/http_server_filter.c +++ b/src/core/channel/http_server_filter.c @@ -47,8 +47,8 @@ typedef struct call_data { grpc_linked_mdelem status; grpc_stream_op_buffer *recv_ops; - void (*on_done_recv)(void *user_data, int success); - void *recv_user_data; + grpc_iomgr_closure *on_done_recv; + grpc_iomgr_closure hs_on_recv; } call_data; typedef struct channel_data { @@ -174,7 +174,7 @@ static void hs_on_recv(void *user_data, int success) { } } } - calld->on_done_recv(calld->recv_user_data, success); + calld->on_done_recv->cb(calld->on_done_recv->cb_arg, success); } static void hs_mutate_op(grpc_call_element *elem, grpc_transport_op *op) { @@ -200,9 +200,7 @@ static void hs_mutate_op(grpc_call_element *elem, grpc_transport_op *op) { /* substitute our callback for the higher callback */ calld->recv_ops = op->recv_ops; calld->on_done_recv = op->on_done_recv; - calld->recv_user_data = op->recv_user_data; - op->on_done_recv = hs_on_recv; - op->recv_user_data = elem; + op->on_done_recv = &calld->hs_on_recv; } } @@ -238,6 +236,7 @@ static void init_call_elem(grpc_call_element *elem, call_data *calld = elem->call_data; /* initialize members */ memset(calld, 0, sizeof(*calld)); + grpc_iomgr_closure_init(&calld->hs_on_recv, hs_on_recv, elem); if (initial_op) hs_mutate_op(elem, initial_op); } diff --git a/src/core/compression/message_compress.h b/src/core/compression/message_compress.h index aba701a6ee..b3eb8f579f 100644 --- a/src/core/compression/message_compress.h +++ b/src/core/compression/message_compress.h @@ -49,4 +49,4 @@ int grpc_msg_compress(grpc_compression_algorithm algorithm, int grpc_msg_decompress(grpc_compression_algorithm algorithm, gpr_slice_buffer *input, gpr_slice_buffer *output); -#endif /* GRPC_INTERNAL_CORE_COMPRESSION_MESSAGE_COMPRESS_H */ +#endif /* GRPC_INTERNAL_CORE_COMPRESSION_MESSAGE_COMPRESS_H */ diff --git a/src/core/httpcli/httpcli.c b/src/core/httpcli/httpcli.c index fa7aabc418..914355a408 100644 --- a/src/core/httpcli/httpcli.c +++ b/src/core/httpcli/httpcli.c @@ -60,14 +60,26 @@ typedef struct { int use_ssl; grpc_httpcli_response_cb on_response; void *user_data; + grpc_httpcli_context *context; + grpc_pollset *pollset; + grpc_iomgr_object iomgr_obj; } internal_request; static grpc_httpcli_get_override g_get_override = NULL; static grpc_httpcli_post_override g_post_override = NULL; +void grpc_httpcli_context_init(grpc_httpcli_context *context) { + grpc_pollset_set_init(&context->pollset_set); +} + +void grpc_httpcli_context_destroy(grpc_httpcli_context *context) { + grpc_pollset_set_destroy(&context->pollset_set); +} + static void next_address(internal_request *req); static void finish(internal_request *req, int success) { + grpc_pollset_set_del_pollset(&req->context->pollset_set, req->pollset); req->on_response(req->user_data, success ? &req->parser.r : NULL); grpc_httpcli_parser_destroy(&req->parser); if (req->addresses != NULL) { @@ -78,6 +90,7 @@ static void finish(internal_request *req, int success) { } gpr_slice_unref(req->request_text); gpr_free(req->host); + grpc_iomgr_unregister_object(&req->iomgr_obj); gpr_free(req); } @@ -198,8 +211,9 @@ static void next_address(internal_request *req) { return; } addr = &req->addresses->addrs[req->next_address++]; - grpc_tcp_client_connect(on_connected, req, (struct sockaddr *)&addr->addr, - addr->len, req->deadline); + grpc_tcp_client_connect(on_connected, req, &req->context->pollset_set, + (struct sockaddr *)&addr->addr, addr->len, + req->deadline); } static void on_resolved(void *arg, grpc_resolved_addresses *addresses) { @@ -213,10 +227,12 @@ static void on_resolved(void *arg, grpc_resolved_addresses *addresses) { next_address(req); } -void grpc_httpcli_get(const grpc_httpcli_request *request, +void grpc_httpcli_get(grpc_httpcli_context *context, grpc_pollset *pollset, + const grpc_httpcli_request *request, gpr_timespec deadline, grpc_httpcli_response_cb on_response, void *user_data) { internal_request *req; + char *name; if (g_get_override && g_get_override(request, deadline, on_response, user_data)) { return; @@ -229,19 +245,27 @@ void grpc_httpcli_get(const grpc_httpcli_request *request, req->user_data = user_data; req->deadline = deadline; req->use_ssl = request->use_ssl; + req->context = context; + req->pollset = pollset; + gpr_asprintf(&name, "HTTP:GET:%s:%s", request->host, request->path); + grpc_iomgr_register_object(&req->iomgr_obj, name); + gpr_free(name); if (req->use_ssl) { req->host = gpr_strdup(request->host); } + grpc_pollset_set_add_pollset(&req->context->pollset_set, req->pollset); grpc_resolve_address(request->host, req->use_ssl ? "https" : "http", on_resolved, req); } -void grpc_httpcli_post(const grpc_httpcli_request *request, +void grpc_httpcli_post(grpc_httpcli_context *context, grpc_pollset *pollset, + const grpc_httpcli_request *request, const char *body_bytes, size_t body_size, gpr_timespec deadline, grpc_httpcli_response_cb on_response, void *user_data) { internal_request *req; + char *name; if (g_post_override && g_post_override(request, body_bytes, body_size, deadline, on_response, user_data)) { return; @@ -255,10 +279,16 @@ void grpc_httpcli_post(const grpc_httpcli_request *request, req->user_data = user_data; req->deadline = deadline; req->use_ssl = request->use_ssl; + req->context = context; + req->pollset = pollset; + gpr_asprintf(&name, "HTTP:GET:%s:%s", request->host, request->path); + grpc_iomgr_register_object(&req->iomgr_obj, name); + gpr_free(name); if (req->use_ssl) { req->host = gpr_strdup(request->host); } + grpc_pollset_set_add_pollset(&req->context->pollset_set, req->pollset); grpc_resolve_address(request->host, req->use_ssl ? "https" : "http", on_resolved, req); } diff --git a/src/core/httpcli/httpcli.h b/src/core/httpcli/httpcli.h index 255c5ed90f..06699e88c2 100644 --- a/src/core/httpcli/httpcli.h +++ b/src/core/httpcli/httpcli.h @@ -38,6 +38,8 @@ #include <grpc/support/time.h> +#include "src/core/iomgr/pollset_set.h" + /* User agent this library reports */ #define GRPC_HTTPCLI_USER_AGENT "grpc-httpcli/0.0" /* Maximum length of a header string of the form 'Key: Value\r\n' */ @@ -49,6 +51,13 @@ typedef struct grpc_httpcli_header { char *value; } grpc_httpcli_header; +/* Tracks in-progress http requests + TODO(ctiller): allow caching and capturing multiple requests for the + same content and combining them */ +typedef struct grpc_httpcli_context { + grpc_pollset_set pollset_set; +} grpc_httpcli_context; + /* A request */ typedef struct grpc_httpcli_request { /* The host name to connect to */ @@ -80,7 +89,14 @@ typedef struct grpc_httpcli_response { typedef void (*grpc_httpcli_response_cb)(void *user_data, const grpc_httpcli_response *response); +void grpc_httpcli_context_init(grpc_httpcli_context *context); +void grpc_httpcli_context_destroy(grpc_httpcli_context *context); + /* Asynchronously perform a HTTP GET. + 'context' specifies the http context under which to do the get + 'pollset' indicates a grpc_pollset that is interested in the result + of the get - work on this pollset may be used to progress the get + operation 'request' contains request parameters - these are caller owned and can be destroyed once the call returns 'deadline' contains a deadline for the request (or gpr_inf_future) @@ -88,14 +104,28 @@ typedef void (*grpc_httpcli_response_cb)(void *user_data, lifetime of the request 'on_response' is a callback to report results to (and 'user_data' is a user supplied pointer to pass to said call) */ -void grpc_httpcli_get(const grpc_httpcli_request *request, +void grpc_httpcli_get(grpc_httpcli_context *context, grpc_pollset *pollset, + const grpc_httpcli_request *request, gpr_timespec deadline, grpc_httpcli_response_cb on_response, void *user_data); /* Asynchronously perform a HTTP POST. - When there is no body, pass in NULL as body_bytes. + 'context' specifies the http context under which to do the post + 'pollset' indicates a grpc_pollset that is interested in the result + of the post - work on this pollset may be used to progress the post + operation + 'request' contains request parameters - these are caller owned and can be + destroyed once the call returns + 'body_bytes' and 'body_size' specify the payload for the post. + When there is no body, pass in NULL as body_bytes. + 'deadline' contains a deadline for the request (or gpr_inf_future) + 'em' points to a caller owned event manager that must be alive for the + lifetime of the request + 'on_response' is a callback to report results to (and 'user_data' is a user + supplied pointer to pass to said call) Does not support ?var1=val1&var2=val2 in the path. */ -void grpc_httpcli_post(const grpc_httpcli_request *request, +void grpc_httpcli_post(grpc_httpcli_context *context, grpc_pollset *pollset, + const grpc_httpcli_request *request, const char *body_bytes, size_t body_size, gpr_timespec deadline, grpc_httpcli_response_cb on_response, void *user_data); @@ -115,4 +145,4 @@ typedef int (*grpc_httpcli_post_override)(const grpc_httpcli_request *request, void grpc_httpcli_set_override(grpc_httpcli_get_override get, grpc_httpcli_post_override post); -#endif /* GRPC_INTERNAL_CORE_HTTPCLI_HTTPCLI_H */ +#endif /* GRPC_INTERNAL_CORE_HTTPCLI_HTTPCLI_H */ diff --git a/src/core/iomgr/fd_posix.c b/src/core/iomgr/fd_posix.c index 28ed7708f7..347d8793c8 100644 --- a/src/core/iomgr/fd_posix.c +++ b/src/core/iomgr/fd_posix.c @@ -109,16 +109,40 @@ static void destroy(grpc_fd *fd) { gpr_free(fd); } +#ifdef GRPC_FD_REF_COUNT_DEBUG +#define REF_BY(fd, n, reason) ref_by(fd, n, reason, __FILE__, __LINE__) +#define UNREF_BY(fd, n, reason) unref_by(fd, n, reason, __FILE__, __LINE__) +static void ref_by(grpc_fd *fd, int n, const char *reason, const char *file, + int line) { + gpr_log(GPR_DEBUG, "FD %d %p ref %d %d -> %d [%s; %s:%d]", fd->fd, fd, n, + gpr_atm_no_barrier_load(&fd->refst), + gpr_atm_no_barrier_load(&fd->refst) + n, reason, file, line); +#else +#define REF_BY(fd, n, reason) ref_by(fd, n) +#define UNREF_BY(fd, n, reason) unref_by(fd, n) static void ref_by(grpc_fd *fd, int n) { +#endif GPR_ASSERT(gpr_atm_no_barrier_fetch_add(&fd->refst, n) > 0); } +#ifdef GRPC_FD_REF_COUNT_DEBUG +static void unref_by(grpc_fd *fd, int n, const char *reason, const char *file, + int line) { + gpr_atm old; + gpr_log(GPR_DEBUG, "FD %d %p unref %d %d -> %d [%s; %s:%d]", fd->fd, fd, n, + gpr_atm_no_barrier_load(&fd->refst), + gpr_atm_no_barrier_load(&fd->refst) - n, reason, file, line); +#else static void unref_by(grpc_fd *fd, int n) { - gpr_atm old = gpr_atm_full_fetch_add(&fd->refst, -n); + gpr_atm old; +#endif + old = gpr_atm_full_fetch_add(&fd->refst, -n); if (old == n) { - grpc_iomgr_add_callback(&fd->on_done_closure); - freelist_fd(fd); + if (fd->on_done_closure) { + grpc_iomgr_add_callback(fd->on_done_closure); + } grpc_iomgr_unregister_object(&fd->iomgr_object); + freelist_fd(fd); } else { GPR_ASSERT(old > n); } @@ -135,12 +159,9 @@ void grpc_fd_global_shutdown(void) { gpr_mu_destroy(&fd_freelist_mu); } -static void do_nothing(void *ignored, int success) {} - grpc_fd *grpc_fd_create(int fd, const char *name) { grpc_fd *r = alloc_fd(fd); grpc_iomgr_register_object(&r->iomgr_object, name); - grpc_pollset_add_fd(grpc_backup_pollset(), r); return r; } @@ -178,24 +199,35 @@ static void wake_all_watchers_locked(grpc_fd *fd) { } } -void grpc_fd_orphan(grpc_fd *fd, grpc_iomgr_cb_func on_done, void *user_data) { - grpc_iomgr_closure_init(&fd->on_done_closure, on_done ? on_done : do_nothing, - user_data); +void grpc_fd_orphan(grpc_fd *fd, grpc_iomgr_closure *on_done, + const char *reason) { + fd->on_done_closure = on_done; shutdown(fd->fd, SHUT_RDWR); - ref_by(fd, 1); /* remove active status, but keep referenced */ + REF_BY(fd, 1, reason); /* remove active status, but keep referenced */ gpr_mu_lock(&fd->watcher_mu); wake_all_watchers_locked(fd); gpr_mu_unlock(&fd->watcher_mu); - unref_by(fd, 2); /* drop the reference */ + UNREF_BY(fd, 2, reason); /* drop the reference */ } /* increment refcount by two to avoid changing the orphan bit */ +#ifdef GRPC_FD_REF_COUNT_DEBUG +void grpc_fd_ref(grpc_fd *fd, const char *reason, const char *file, int line) { + ref_by(fd, 2, reason, file, line); +} + +void grpc_fd_unref(grpc_fd *fd, const char *reason, const char *file, + int line) { + unref_by(fd, 2, reason, file, line); +} +#else void grpc_fd_ref(grpc_fd *fd) { ref_by(fd, 2); } void grpc_fd_unref(grpc_fd *fd) { unref_by(fd, 2); } +#endif static void process_callback(grpc_iomgr_closure *closure, int success, - int allow_synchronous_callback) { + int allow_synchronous_callback) { if (allow_synchronous_callback) { closure->cb(closure->cb_arg, success); } else { @@ -235,7 +267,7 @@ static void notify_on(grpc_fd *fd, gpr_atm *st, grpc_iomgr_closure *closure, GPR_ASSERT(gpr_atm_no_barrier_load(st) == READY); gpr_atm_rel_store(st, NOT_READY); process_callback(closure, !gpr_atm_acq_load(&fd->shutdown), - allow_synchronous_callback); + allow_synchronous_callback); return; default: /* WAITING */ /* upcallptr was set to a different closure. This is an error! */ @@ -279,7 +311,7 @@ static void set_ready(grpc_fd *fd, gpr_atm *st, /* only one set_ready can be active at once (but there may be a racing notify_on) */ int success; - grpc_iomgr_closure* closure; + grpc_iomgr_closure *closure; size_t ncb = 0; gpr_mu_lock(&fd->set_state_mu); @@ -319,7 +351,7 @@ gpr_uint32 grpc_fd_begin_poll(grpc_fd *fd, grpc_pollset *pollset, gpr_uint32 mask = 0; /* keep track of pollers that have requested our events, in case they change */ - grpc_fd_ref(fd); + GRPC_FD_REF(fd, "poll"); gpr_mu_lock(&fd->watcher_mu); /* if there is nobody polling for read, but we need to, then start doing so */ @@ -374,7 +406,7 @@ void grpc_fd_end_poll(grpc_fd_watcher *watcher, int got_read, int got_write) { } gpr_mu_unlock(&fd->watcher_mu); - grpc_fd_unref(fd); + GRPC_FD_UNREF(fd, "poll"); } void grpc_fd_become_readable(grpc_fd *fd, int allow_synchronous_callback) { diff --git a/src/core/iomgr/fd_posix.h b/src/core/iomgr/fd_posix.h index 0fa71850e3..94d0019fa4 100644 --- a/src/core/iomgr/fd_posix.h +++ b/src/core/iomgr/fd_posix.h @@ -62,12 +62,12 @@ struct grpc_fd { gpr_atm shutdown; /* The watcher list. - + The following watcher related fields are protected by watcher_mu. - + An fd_watcher is an ephemeral object created when an fd wants to begin polling, and destroyed after the poll. - + It denotes the fd's interest in whether to read poll or write poll or both or neither on this fd. @@ -93,7 +93,7 @@ struct grpc_fd { struct grpc_fd *freelist_next; - grpc_iomgr_closure on_done_closure; + grpc_iomgr_closure *on_done_closure; grpc_iomgr_closure *shutdown_closures[2]; grpc_iomgr_object iomgr_object; @@ -109,7 +109,8 @@ grpc_fd *grpc_fd_create(int fd, const char *name); If on_done is NULL, no callback will be made. Requires: *fd initialized; no outstanding notify_on_read or notify_on_write. */ -void grpc_fd_orphan(grpc_fd *fd, grpc_iomgr_cb_func on_done, void *user_data); +void grpc_fd_orphan(grpc_fd *fd, grpc_iomgr_closure *on_done, + const char *reason); /* Begin polling on an fd. Registers that the given pollset is interested in this fd - so that if read @@ -159,10 +160,19 @@ void grpc_fd_become_readable(grpc_fd *fd, int allow_synchronous_callback); void grpc_fd_become_writable(grpc_fd *fd, int allow_synchronous_callback); /* Reference counting for fds */ +#ifdef GRPC_FD_REF_COUNT_DEBUG +void grpc_fd_ref(grpc_fd *fd, const char *reason, const char *file, int line); +void grpc_fd_unref(grpc_fd *fd, const char *reason, const char *file, int line); +#define GRPC_FD_REF(fd, reason) grpc_fd_ref(fd, reason, __FILE__, __LINE__) +#define GRPC_FD_UNREF(fd, reason) grpc_fd_unref(fd, reason, __FILE__, __LINE__) +#else void grpc_fd_ref(grpc_fd *fd); void grpc_fd_unref(grpc_fd *fd); +#define GRPC_FD_REF(fd, reason) grpc_fd_ref(fd) +#define GRPC_FD_UNREF(fd, reason) grpc_fd_unref(fd) +#endif void grpc_fd_global_init(void); void grpc_fd_global_shutdown(void); -#endif /* GRPC_INTERNAL_CORE_IOMGR_FD_POSIX_H */ +#endif /* GRPC_INTERNAL_CORE_IOMGR_FD_POSIX_H */ diff --git a/src/core/iomgr/iomgr.c b/src/core/iomgr/iomgr.c index fa8dcc5b4a..c47528aa94 100644 --- a/src/core/iomgr/iomgr.c +++ b/src/core/iomgr/iomgr.c @@ -112,13 +112,20 @@ void grpc_iomgr_shutdown(void) { gpr_timespec shutdown_deadline = gpr_time_add(gpr_now(), gpr_time_from_seconds(10)); - gpr_mu_lock(&g_mu); g_shutdown = 1; - while (g_cbs_head || g_root_object.next != &g_root_object) { - size_t nobjs = count_objects(); - gpr_log(GPR_DEBUG, "Waiting for %d iomgr objects to be destroyed%s", nobjs, - g_cbs_head ? " and executing final callbacks" : ""); + while (g_cbs_head != NULL || g_root_object.next != &g_root_object) { + if (g_cbs_head != NULL && g_root_object.next != &g_root_object) { + gpr_log(GPR_DEBUG, + "Waiting for %d iomgr objects to be destroyed and executing " + "final callbacks", + count_objects()); + } else if (g_cbs_head != NULL) { + gpr_log(GPR_DEBUG, "Executing final iomgr callbacks"); + } else { + gpr_log(GPR_DEBUG, "Waiting for %d iomgr objects to be destroyed", + count_objects()); + } if (g_cbs_head) { do { closure = g_cbs_head; @@ -131,10 +138,14 @@ void grpc_iomgr_shutdown(void) { } while (g_cbs_head); continue; } - if (nobjs > 0) { + if (grpc_alarm_check(&g_mu, gpr_inf_future, NULL)) { + gpr_log(GPR_DEBUG, "got late alarm"); + continue; + } + if (g_root_object.next != &g_root_object) { int timeout = 0; - gpr_timespec short_deadline = gpr_time_add(gpr_now(), - gpr_time_from_millis(100)); + gpr_timespec short_deadline = + gpr_time_add(gpr_now(), gpr_time_from_millis(100)); while (gpr_cv_wait(&g_rcv, &g_mu, short_deadline) && g_cbs_head == NULL) { if (gpr_time_cmp(gpr_now(), shutdown_deadline) > 0) { timeout = 1; @@ -158,15 +169,16 @@ void grpc_iomgr_shutdown(void) { grpc_kick_poller(); gpr_event_wait(&g_background_callback_executor_done, gpr_inf_future); - grpc_iomgr_platform_shutdown(); grpc_alarm_list_shutdown(); + + grpc_iomgr_platform_shutdown(); gpr_mu_destroy(&g_mu); gpr_cv_destroy(&g_rcv); } void grpc_iomgr_register_object(grpc_iomgr_object *obj, const char *name) { - obj->name = gpr_strdup(name); gpr_mu_lock(&g_mu); + obj->name = gpr_strdup(name); obj->next = &g_root_object; obj->prev = obj->next->prev; obj->next->prev = obj->prev->next = obj; @@ -174,15 +186,14 @@ void grpc_iomgr_register_object(grpc_iomgr_object *obj, const char *name) { } void grpc_iomgr_unregister_object(grpc_iomgr_object *obj) { - gpr_free(obj->name); gpr_mu_lock(&g_mu); obj->next->prev = obj->prev; obj->prev->next = obj->next; + gpr_free(obj->name); gpr_cv_signal(&g_rcv); gpr_mu_unlock(&g_mu); } - void grpc_iomgr_closure_init(grpc_iomgr_closure *closure, grpc_iomgr_cb_func cb, void *cb_arg) { closure->cb = cb; @@ -200,15 +211,16 @@ void grpc_iomgr_add_delayed_callback(grpc_iomgr_closure *closure, int success) { g_cbs_tail->next = closure; g_cbs_tail = closure; } + if (g_shutdown) { + gpr_cv_signal(&g_rcv); + } gpr_mu_unlock(&g_mu); } - void grpc_iomgr_add_callback(grpc_iomgr_closure *closure) { grpc_iomgr_add_delayed_callback(closure, 1 /* GPR_TRUE */); } - int grpc_maybe_call_delayed_callbacks(gpr_mu *drop_mu, int success) { int n = 0; gpr_mu *retake_mu = NULL; diff --git a/src/core/iomgr/iomgr.h b/src/core/iomgr/iomgr.h index a10e481e48..265c817db1 100644 --- a/src/core/iomgr/iomgr.h +++ b/src/core/iomgr/iomgr.h @@ -73,4 +73,6 @@ void grpc_iomgr_shutdown(void); * Can be called from within a callback or from anywhere else */ void grpc_iomgr_add_callback(grpc_iomgr_closure *closure); +void grpc_iomgr_add_delayed_callback(grpc_iomgr_closure *iocb, int success); + #endif /* GRPC_INTERNAL_CORE_IOMGR_IOMGR_H */ diff --git a/src/core/iomgr/pollset.h b/src/core/iomgr/pollset.h index 067af87c93..7472b6144f 100644 --- a/src/core/iomgr/pollset.h +++ b/src/core/iomgr/pollset.h @@ -52,14 +52,12 @@ #include "src/core/iomgr/pollset_windows.h" #endif - void grpc_pollset_init(grpc_pollset *pollset); void grpc_pollset_shutdown(grpc_pollset *pollset, void (*shutdown_done)(void *arg), void *shutdown_done_arg); void grpc_pollset_destroy(grpc_pollset *pollset); - /* Do some work on a pollset. May involve invoking asynchronous callbacks, or actually polling file descriptors. @@ -67,8 +65,8 @@ void grpc_pollset_destroy(grpc_pollset *pollset); May unlock GRPC_POLLSET_MU(pollset) during its execution. */ int grpc_pollset_work(grpc_pollset *pollset, gpr_timespec deadline); -/* Break a pollset out of polling work +/* Break one polling thread out of polling work for this pollset. Requires GRPC_POLLSET_MU(pollset) locked. */ void grpc_pollset_kick(grpc_pollset *pollset); -#endif /* GRPC_INTERNAL_CORE_IOMGR_POLLSET_H */ +#endif /* GRPC_INTERNAL_CORE_IOMGR_POLLSET_H */ diff --git a/src/core/iomgr/pollset_kick.c b/src/core/iomgr/pollset_kick_posix.c index f0211b8274..51021784f2 100644 --- a/src/core/iomgr/pollset_kick.c +++ b/src/core/iomgr/pollset_kick_posix.c @@ -34,7 +34,7 @@ #include <grpc/support/port_platform.h> #ifdef GPR_POSIX_SOCKET -#include "src/core/iomgr/pollset_kick.h" +#include "src/core/iomgr/pollset_kick_posix.h" #include <errno.h> #include <string.h> @@ -73,7 +73,7 @@ static grpc_kick_fd_info *allocate_wfd(void) { return info; } -static void destroy_wfd(grpc_kick_fd_info* wfd) { +static void destroy_wfd(grpc_kick_fd_info *wfd) { grpc_wakeup_fd_destroy(&wfd->wakeup_fd); gpr_free(wfd); } @@ -96,41 +96,49 @@ static void free_wfd(grpc_kick_fd_info *fd_info) { void grpc_pollset_kick_init(grpc_pollset_kick_state *kick_state) { gpr_mu_init(&kick_state->mu); kick_state->kicked = 0; - kick_state->fd_info = NULL; + kick_state->fd_list.next = kick_state->fd_list.prev = &kick_state->fd_list; } void grpc_pollset_kick_destroy(grpc_pollset_kick_state *kick_state) { gpr_mu_destroy(&kick_state->mu); - GPR_ASSERT(kick_state->fd_info == NULL); + GPR_ASSERT(kick_state->fd_list.next == &kick_state->fd_list); } -int grpc_pollset_kick_pre_poll(grpc_pollset_kick_state *kick_state) { +grpc_kick_fd_info *grpc_pollset_kick_pre_poll( + grpc_pollset_kick_state *kick_state) { + grpc_kick_fd_info *fd_info; gpr_mu_lock(&kick_state->mu); if (kick_state->kicked) { kick_state->kicked = 0; gpr_mu_unlock(&kick_state->mu); - return -1; + return NULL; } - kick_state->fd_info = allocate_wfd(); + fd_info = allocate_wfd(); + fd_info->next = &kick_state->fd_list; + fd_info->prev = fd_info->next->prev; + fd_info->next->prev = fd_info->prev->next = fd_info; gpr_mu_unlock(&kick_state->mu); - return GRPC_WAKEUP_FD_GET_READ_FD(&kick_state->fd_info->wakeup_fd); + return fd_info; } -void grpc_pollset_kick_consume(grpc_pollset_kick_state *kick_state) { - grpc_wakeup_fd_consume_wakeup(&kick_state->fd_info->wakeup_fd); +void grpc_pollset_kick_consume(grpc_pollset_kick_state *kick_state, + grpc_kick_fd_info *fd_info) { + grpc_wakeup_fd_consume_wakeup(&fd_info->wakeup_fd); } -void grpc_pollset_kick_post_poll(grpc_pollset_kick_state *kick_state) { +void grpc_pollset_kick_post_poll(grpc_pollset_kick_state *kick_state, + grpc_kick_fd_info *fd_info) { gpr_mu_lock(&kick_state->mu); - free_wfd(kick_state->fd_info); - kick_state->fd_info = NULL; + fd_info->next->prev = fd_info->prev; + fd_info->prev->next = fd_info->next; + free_wfd(fd_info); gpr_mu_unlock(&kick_state->mu); } void grpc_pollset_kick_kick(grpc_pollset_kick_state *kick_state) { gpr_mu_lock(&kick_state->mu); - if (kick_state->fd_info != NULL) { - grpc_wakeup_fd_wakeup(&kick_state->fd_info->wakeup_fd); + if (kick_state->fd_list.next != &kick_state->fd_list) { + grpc_wakeup_fd_wakeup(&kick_state->fd_list.next->wakeup_fd); } else { kick_state->kicked = 1; } @@ -157,5 +165,4 @@ void grpc_pollset_kick_global_destroy(void) { gpr_mu_destroy(&fd_freelist_mu); } - -#endif /* GPR_POSIX_SOCKET */ +#endif /* GPR_POSIX_SOCKET */ diff --git a/src/core/iomgr/pollset_kick_posix.h b/src/core/iomgr/pollset_kick_posix.h index 427699198c..77e32a8d51 100644 --- a/src/core/iomgr/pollset_kick_posix.h +++ b/src/core/iomgr/pollset_kick_posix.h @@ -37,15 +37,57 @@ #include "src/core/iomgr/wakeup_fd_posix.h" #include <grpc/support/sync.h> +/* pollset kicking allows breaking a thread out of polling work for + a given pollset. + writing a byte to a pipe is used as a posix-ly portable base + mechanism, and eventfds are utilized on Linux for better performance. */ + typedef struct grpc_kick_fd_info { grpc_wakeup_fd_info wakeup_fd; + /* used for polling list and free list */ struct grpc_kick_fd_info *next; + /* only used when polling */ + struct grpc_kick_fd_info *prev; } grpc_kick_fd_info; typedef struct grpc_pollset_kick_state { gpr_mu mu; int kicked; - struct grpc_kick_fd_info *fd_info; + struct grpc_kick_fd_info fd_list; } grpc_pollset_kick_state; -#endif /* GRPC_INTERNAL_CORE_IOMGR_POLLSET_KICK_POSIX_H */ +#define GRPC_POLLSET_KICK_GET_FD(kick_fd_info) \ + GRPC_WAKEUP_FD_GET_READ_FD(&(kick_fd_info)->wakeup_fd) + +/* This is an abstraction around the typical pipe mechanism for waking up a + thread sitting in a poll() style call. */ + +void grpc_pollset_kick_global_init(void); +void grpc_pollset_kick_global_destroy(void); + +void grpc_pollset_kick_init(grpc_pollset_kick_state *kick_state); +void grpc_pollset_kick_destroy(grpc_pollset_kick_state *kick_state); + +/* Guarantees a pure posix implementation rather than a specialized one, if + * applicable. Intended for testing. */ +void grpc_pollset_kick_global_init_fallback_fd(void); + +/* Must be called before entering poll(). If return value is NULL, this consumed + an existing kick. Otherwise the return value is an FD to add to the poll set. + */ +grpc_kick_fd_info *grpc_pollset_kick_pre_poll( + grpc_pollset_kick_state *kick_state); + +/* Consume an existing kick. Must be called after poll returns that the fd was + readable, and before calling kick_post_poll. */ +void grpc_pollset_kick_consume(grpc_pollset_kick_state *kick_state, + grpc_kick_fd_info *fd_info); + +/* Must be called after pre_poll, and after consume if applicable */ +void grpc_pollset_kick_post_poll(grpc_pollset_kick_state *kick_state, + grpc_kick_fd_info *fd_info); + +/* Actually kick */ +void grpc_pollset_kick_kick(grpc_pollset_kick_state *kick_state); + +#endif /* GRPC_INTERNAL_CORE_IOMGR_POLLSET_KICK_POSIX_H */ diff --git a/src/core/iomgr/pollset_multipoller_with_epoll.c b/src/core/iomgr/pollset_multipoller_with_epoll.c index 40b7935a57..b4a526b9e7 100644 --- a/src/core/iomgr/pollset_multipoller_with_epoll.c +++ b/src/core/iomgr/pollset_multipoller_with_epoll.c @@ -97,14 +97,7 @@ static int multipoll_with_epoll_pollset_maybe_work( * here. */ - if (gpr_time_cmp(deadline, gpr_inf_future) == 0) { - timeout_ms = -1; - } else { - timeout_ms = gpr_time_to_millis(gpr_time_sub(deadline, now)); - if (timeout_ms <= 0) { - return 1; - } - } + timeout_ms = grpc_poll_deadline_to_millis_timeout(deadline, now); pollset->counter += 1; gpr_mu_unlock(&pollset->mu); @@ -140,13 +133,12 @@ static int multipoll_with_epoll_pollset_maybe_work( gpr_mu_lock(&pollset->mu); pollset->counter -= 1; - /* TODO(klempner): This should signal once per event rather than broadcast, - * although it probably doesn't matter because threads will generally be - * blocked in epoll_wait rather than being blocked on the cv. */ - gpr_cv_broadcast(&pollset->cv); return 1; } +static void multipoll_with_epoll_pollset_finish_shutdown( + grpc_pollset *pollset) {} + static void multipoll_with_epoll_pollset_destroy(grpc_pollset *pollset) { pollset_hdr *h = pollset->data.ptr; grpc_wakeup_fd_destroy(&h->wakeup_fd); @@ -160,8 +152,11 @@ static void epoll_kick(grpc_pollset *pollset) { } static const grpc_pollset_vtable multipoll_with_epoll_pollset = { - multipoll_with_epoll_pollset_add_fd, multipoll_with_epoll_pollset_del_fd, - multipoll_with_epoll_pollset_maybe_work, epoll_kick, + multipoll_with_epoll_pollset_add_fd, + multipoll_with_epoll_pollset_del_fd, + multipoll_with_epoll_pollset_maybe_work, + epoll_kick, + multipoll_with_epoll_pollset_finish_shutdown, multipoll_with_epoll_pollset_destroy}; static void epoll_become_multipoller(grpc_pollset *pollset, grpc_fd **fds, diff --git a/src/core/iomgr/pollset_multipoller_with_poll_posix.c b/src/core/iomgr/pollset_multipoller_with_poll_posix.c index d781c9b4bb..2f108da66a 100644 --- a/src/core/iomgr/pollset_multipoller_with_poll_posix.c +++ b/src/core/iomgr/pollset_multipoller_with_poll_posix.c @@ -78,7 +78,7 @@ static void multipoll_with_poll_pollset_add_fd(grpc_pollset *pollset, h->fds = gpr_realloc(h->fds, sizeof(grpc_fd *) * h->fd_capacity); } h->fds[h->fd_count++] = fd; - grpc_fd_ref(fd); + GRPC_FD_REF(fd, "multipoller"); } static void multipoll_with_poll_pollset_del_fd(grpc_pollset *pollset, @@ -90,7 +90,7 @@ static void multipoll_with_poll_pollset_del_fd(grpc_pollset *pollset, h->dels = gpr_realloc(h->dels, sizeof(grpc_fd *) * h->del_capacity); } h->dels[h->del_count++] = fd; - grpc_fd_ref(fd); + GRPC_FD_REF(fd, "multipoller_del"); } static void end_polling(grpc_pollset *pollset) { @@ -110,19 +110,10 @@ static int multipoll_with_poll_pollset_maybe_work( int r; size_t i, np, nf, nd; pollset_hdr *h; + grpc_kick_fd_info *kfd; - if (pollset->counter) { - return 0; - } h = pollset->data.ptr; - if (gpr_time_cmp(deadline, gpr_inf_future) == 0) { - timeout = -1; - } else { - timeout = gpr_time_to_millis(gpr_time_sub(deadline, now)); - if (timeout <= 0) { - return 1; - } - } + timeout = grpc_poll_deadline_to_millis_timeout(deadline, now); if (h->pfd_capacity < h->fd_count + 1) { h->pfd_capacity = GPR_MAX(h->pfd_capacity * 3 / 2, h->fd_count + 1); gpr_free(h->pfds); @@ -132,11 +123,12 @@ static int multipoll_with_poll_pollset_maybe_work( } nf = 0; np = 1; - h->pfds[0].fd = grpc_pollset_kick_pre_poll(&pollset->kick_state); - if (h->pfds[0].fd < 0) { + kfd = grpc_pollset_kick_pre_poll(&pollset->kick_state); + if (kfd == NULL) { /* Already kicked */ return 1; } + h->pfds[0].fd = GRPC_POLLSET_KICK_GET_FD(kfd); h->pfds[0].events = POLLIN; h->pfds[0].revents = POLLOUT; for (i = 0; i < h->fd_count; i++) { @@ -145,7 +137,7 @@ static int multipoll_with_poll_pollset_maybe_work( if (h->fds[i] == h->dels[nd]) remove = 1; } if (remove) { - grpc_fd_unref(h->fds[i]); + GRPC_FD_UNREF(h->fds[i], "multipoller"); } else { h->fds[nf++] = h->fds[i]; h->watchers[np].fd = h->fds[i]; @@ -157,14 +149,14 @@ static int multipoll_with_poll_pollset_maybe_work( h->pfd_count = np; h->fd_count = nf; for (nd = 0; nd < h->del_count; nd++) { - grpc_fd_unref(h->dels[nd]); + GRPC_FD_UNREF(h->dels[nd], "multipoller_del"); } h->del_count = 0; if (h->pfd_count == 0) { end_polling(pollset); return 0; } - pollset->counter = 1; + pollset->counter++; gpr_mu_unlock(&pollset->mu); for (i = 1; i < np; i++) { @@ -184,7 +176,7 @@ static int multipoll_with_poll_pollset_maybe_work( /* do nothing */ } else { if (h->pfds[0].revents & POLLIN) { - grpc_pollset_kick_consume(&pollset->kick_state); + grpc_pollset_kick_consume(&pollset->kick_state, kfd); } for (i = 1; i < np; i++) { if (h->pfds[i].revents & (POLLIN | POLLHUP | POLLERR)) { @@ -195,11 +187,11 @@ static int multipoll_with_poll_pollset_maybe_work( } } } - grpc_pollset_kick_post_poll(&pollset->kick_state); + grpc_pollset_kick_post_poll(&pollset->kick_state, kfd); gpr_mu_lock(&pollset->mu); - pollset->counter = 0; - gpr_cv_broadcast(&pollset->cv); + pollset->counter--; + return 1; } @@ -207,16 +199,23 @@ static void multipoll_with_poll_pollset_kick(grpc_pollset *p) { grpc_pollset_force_kick(p); } -static void multipoll_with_poll_pollset_destroy(grpc_pollset *pollset) { +static void multipoll_with_poll_pollset_finish_shutdown(grpc_pollset *pollset) { size_t i; pollset_hdr *h = pollset->data.ptr; GPR_ASSERT(pollset->counter == 0); for (i = 0; i < h->fd_count; i++) { - grpc_fd_unref(h->fds[i]); + GRPC_FD_UNREF(h->fds[i], "multipoller"); } for (i = 0; i < h->del_count; i++) { - grpc_fd_unref(h->dels[i]); + GRPC_FD_UNREF(h->dels[i], "multipoller_del"); } + h->fd_count = 0; + h->del_count = 0; +} + +static void multipoll_with_poll_pollset_destroy(grpc_pollset *pollset) { + pollset_hdr *h = pollset->data.ptr; + multipoll_with_poll_pollset_finish_shutdown(pollset); gpr_free(h->pfds); gpr_free(h->watchers); gpr_free(h->fds); @@ -225,8 +224,11 @@ static void multipoll_with_poll_pollset_destroy(grpc_pollset *pollset) { } static const grpc_pollset_vtable multipoll_with_poll_pollset = { - multipoll_with_poll_pollset_add_fd, multipoll_with_poll_pollset_del_fd, - multipoll_with_poll_pollset_maybe_work, multipoll_with_poll_pollset_kick, + multipoll_with_poll_pollset_add_fd, + multipoll_with_poll_pollset_del_fd, + multipoll_with_poll_pollset_maybe_work, + multipoll_with_poll_pollset_kick, + multipoll_with_poll_pollset_finish_shutdown, multipoll_with_poll_pollset_destroy}; void grpc_poll_become_multipoller(grpc_pollset *pollset, grpc_fd **fds, @@ -247,7 +249,7 @@ void grpc_poll_become_multipoller(grpc_pollset *pollset, grpc_fd **fds, h->dels = NULL; for (i = 0; i < nfds; i++) { h->fds[i] = fds[i]; - grpc_fd_ref(fds[i]); + GRPC_FD_REF(fds[i], "multipoller"); } } diff --git a/src/core/iomgr/pollset_posix.c b/src/core/iomgr/pollset_posix.c index d2f615271e..46d3d132ce 100644 --- a/src/core/iomgr/pollset_posix.c +++ b/src/core/iomgr/pollset_posix.c @@ -54,31 +54,8 @@ #include <grpc/support/tls.h> #include <grpc/support/useful.h> -static grpc_pollset g_backup_pollset; -static int g_shutdown_backup_poller; -static gpr_event g_backup_poller_done; -static gpr_event g_backup_pollset_shutdown_done; - GPR_TLS_DECL(g_current_thread_poller); -static void backup_poller(void *p) { - gpr_timespec delta = gpr_time_from_millis(100); - gpr_timespec last_poll = gpr_now(); - - gpr_mu_lock(&g_backup_pollset.mu); - while (g_shutdown_backup_poller == 0) { - gpr_timespec next_poll = gpr_time_add(last_poll, delta); - grpc_pollset_work(&g_backup_pollset, gpr_time_add(gpr_now(), gpr_time_from_seconds(1))); - gpr_mu_unlock(&g_backup_pollset.mu); - gpr_sleep_until(next_poll); - gpr_mu_lock(&g_backup_pollset.mu); - last_poll = next_poll; - } - gpr_mu_unlock(&g_backup_pollset.mu); - - gpr_event_set(&g_backup_poller_done, (void *)1); -} - void grpc_pollset_kick(grpc_pollset *p) { if (gpr_tls_get(&g_current_thread_poller) != (gpr_intptr)p && p->counter) { p->vtable->kick(p); @@ -99,44 +76,14 @@ static void kick_using_pollset_kick(grpc_pollset *p) { /* global state management */ -grpc_pollset *grpc_backup_pollset(void) { return &g_backup_pollset; } - void grpc_pollset_global_init(void) { - gpr_thd_id id; - gpr_tls_init(&g_current_thread_poller); /* Initialize kick fd state */ grpc_pollset_kick_global_init(); - - /* initialize the backup pollset */ - grpc_pollset_init(&g_backup_pollset); - - /* start the backup poller thread */ - g_shutdown_backup_poller = 0; - gpr_event_init(&g_backup_poller_done); - gpr_event_init(&g_backup_pollset_shutdown_done); - gpr_thd_new(&id, backup_poller, NULL, NULL); -} - -static void on_backup_pollset_shutdown_done(void *arg) { - gpr_event_set(&g_backup_pollset_shutdown_done, (void *)1); } void grpc_pollset_global_shutdown(void) { - /* terminate the backup poller thread */ - gpr_mu_lock(&g_backup_pollset.mu); - g_shutdown_backup_poller = 1; - gpr_mu_unlock(&g_backup_pollset.mu); - gpr_event_wait(&g_backup_poller_done, gpr_inf_future); - - grpc_pollset_shutdown(&g_backup_pollset, on_backup_pollset_shutdown_done, - NULL); - gpr_event_wait(&g_backup_pollset_shutdown_done, gpr_inf_future); - - /* destroy the backup pollset */ - grpc_pollset_destroy(&g_backup_pollset); - /* destroy the kick pipes */ grpc_pollset_kick_global_destroy(); @@ -145,32 +92,34 @@ void grpc_pollset_global_shutdown(void) { /* main interface */ -static void become_empty_pollset(grpc_pollset *pollset); -static void become_unary_pollset(grpc_pollset *pollset, grpc_fd *fd); +static void become_basic_pollset(grpc_pollset *pollset, grpc_fd *fd_or_null); void grpc_pollset_init(grpc_pollset *pollset) { gpr_mu_init(&pollset->mu); - gpr_cv_init(&pollset->cv); grpc_pollset_kick_init(&pollset->kick_state); pollset->in_flight_cbs = 0; pollset->shutting_down = 0; - become_empty_pollset(pollset); + pollset->called_shutdown = 0; + become_basic_pollset(pollset, NULL); } void grpc_pollset_add_fd(grpc_pollset *pollset, grpc_fd *fd) { gpr_mu_lock(&pollset->mu); pollset->vtable->add_fd(pollset, fd); - gpr_cv_broadcast(&pollset->cv); gpr_mu_unlock(&pollset->mu); } void grpc_pollset_del_fd(grpc_pollset *pollset, grpc_fd *fd) { gpr_mu_lock(&pollset->mu); pollset->vtable->del_fd(pollset, fd); - gpr_cv_broadcast(&pollset->cv); gpr_mu_unlock(&pollset->mu); } +static void finish_shutdown(grpc_pollset *pollset) { + pollset->vtable->finish_shutdown(pollset); + pollset->shutdown_done_cb(pollset->shutdown_done_arg); +} + int grpc_pollset_work(grpc_pollset *pollset, gpr_timespec deadline) { /* pollset->mu already held */ gpr_timespec now = gpr_now(); @@ -193,9 +142,10 @@ int grpc_pollset_work(grpc_pollset *pollset, gpr_timespec deadline) { if (pollset->shutting_down) { if (pollset->counter > 0) { grpc_pollset_kick(pollset); - } else if (pollset->in_flight_cbs == 0) { + } else if (!pollset->called_shutdown && pollset->in_flight_cbs == 0) { + pollset->called_shutdown = 1; gpr_mu_unlock(&pollset->mu); - pollset->shutdown_done_cb(pollset->shutdown_done_arg); + finish_shutdown(pollset); /* Continuing to access pollset here is safe -- it is the caller's * responsibility to not destroy when it has outstanding calls to * grpc_pollset_work. @@ -209,21 +159,24 @@ int grpc_pollset_work(grpc_pollset *pollset, gpr_timespec deadline) { void grpc_pollset_shutdown(grpc_pollset *pollset, void (*shutdown_done)(void *arg), void *shutdown_done_arg) { - int in_flight_cbs; - int counter; + int call_shutdown = 0; gpr_mu_lock(&pollset->mu); + GPR_ASSERT(!pollset->shutting_down); pollset->shutting_down = 1; - in_flight_cbs = pollset->in_flight_cbs; - counter = pollset->counter; + if (!pollset->called_shutdown && pollset->in_flight_cbs == 0 && + pollset->counter == 0) { + pollset->called_shutdown = 1; + call_shutdown = 1; + } pollset->shutdown_done_cb = shutdown_done; pollset->shutdown_done_arg = shutdown_done_arg; - if (counter > 0) { + if (pollset->counter > 0) { grpc_pollset_kick(pollset); } gpr_mu_unlock(&pollset->mu); - if (in_flight_cbs == 0 && counter == 0) { - shutdown_done(shutdown_done_arg); + if (call_shutdown) { + finish_shutdown(pollset); } } @@ -233,41 +186,29 @@ void grpc_pollset_destroy(grpc_pollset *pollset) { pollset->vtable->destroy(pollset); grpc_pollset_kick_destroy(&pollset->kick_state); gpr_mu_destroy(&pollset->mu); - gpr_cv_destroy(&pollset->cv); -} - -/* - * empty_pollset - a vtable that provides polling for NO file descriptors - */ - -static void empty_pollset_add_fd(grpc_pollset *pollset, grpc_fd *fd) { - become_unary_pollset(pollset, fd); } -static void empty_pollset_del_fd(grpc_pollset *pollset, grpc_fd *fd) {} - -static int empty_pollset_maybe_work(grpc_pollset *pollset, - gpr_timespec deadline, gpr_timespec now, - int allow_synchronous_callback) { - return 0; -} - -static void empty_pollset_destroy(grpc_pollset *pollset) {} - -static const grpc_pollset_vtable empty_pollset = { - empty_pollset_add_fd, empty_pollset_del_fd, empty_pollset_maybe_work, - kick_using_pollset_kick, empty_pollset_destroy}; - -static void become_empty_pollset(grpc_pollset *pollset) { - pollset->vtable = &empty_pollset; +int grpc_poll_deadline_to_millis_timeout(gpr_timespec deadline, gpr_timespec now) { + gpr_timespec timeout; + static const int max_spin_polling_us = 10; + if (gpr_time_cmp(deadline, gpr_inf_future) == 0) { + return -1; + } + if (gpr_time_cmp( + deadline, + gpr_time_add(now, gpr_time_from_micros(max_spin_polling_us))) <= 0) { + return 0; + } + timeout = gpr_time_sub(deadline, now); + return gpr_time_to_millis( + gpr_time_add(timeout, gpr_time_from_nanos(GPR_NS_PER_SEC - 1))); } /* - * unary_poll_pollset - a vtable that provides polling for one file descriptor - * via poll() + * basic_pollset - a vtable that provides polling for zero or one file + * descriptor via poll() */ - typedef struct grpc_unary_promote_args { const grpc_pollset_vtable *original_vtable; grpc_pollset *pollset; @@ -275,7 +216,7 @@ typedef struct grpc_unary_promote_args { grpc_iomgr_closure promotion_closure; } grpc_unary_promote_args; -static void unary_poll_do_promote(void *args, int success) { +static void basic_do_promote(void *args, int success) { grpc_unary_promote_args *up_args = args; const grpc_pollset_vtable *original_vtable = up_args->original_vtable; grpc_pollset *pollset = up_args->pollset; @@ -293,7 +234,7 @@ static void unary_poll_do_promote(void *args, int success) { gpr_mu_lock(&pollset->mu); /* First we need to ensure that nobody is polling concurrently */ - while (pollset->counter != 0) { + if (pollset->counter != 0) { grpc_pollset_kick(pollset); grpc_iomgr_add_callback(&up_args->promotion_closure); gpr_mu_unlock(&pollset->mu); @@ -321,33 +262,33 @@ static void unary_poll_do_promote(void *args, int success) { fds[0] = pollset->data.ptr; fds[1] = fd; - if (!grpc_fd_is_orphaned(fds[0])) { + if (fds[0] && !grpc_fd_is_orphaned(fds[0])) { grpc_platform_become_multipoller(pollset, fds, GPR_ARRAY_SIZE(fds)); - grpc_fd_unref(fds[0]); + GRPC_FD_UNREF(fds[0], "basicpoll"); } else { /* old fd is orphaned and we haven't cleaned it up until now, so remain a * unary poller */ /* Note that it is possible that fds[1] is also orphaned at this point. * That's okay, we'll correct it at the next add or poll. */ - grpc_fd_unref(fds[0]); + if (fds[0]) GRPC_FD_UNREF(fds[0], "basicpoll"); pollset->data.ptr = fd; - grpc_fd_ref(fd); + GRPC_FD_REF(fd, "basicpoll"); } } - gpr_cv_broadcast(&pollset->cv); gpr_mu_unlock(&pollset->mu); if (do_shutdown_cb) { pollset->shutdown_done_cb(pollset->shutdown_done_arg); } - /* Matching ref in unary_poll_pollset_add_fd */ - grpc_fd_unref(fd); + /* Matching ref in basic_pollset_add_fd */ + GRPC_FD_UNREF(fd, "basicpoll_add"); } -static void unary_poll_pollset_add_fd(grpc_pollset *pollset, grpc_fd *fd) { +static void basic_pollset_add_fd(grpc_pollset *pollset, grpc_fd *fd) { grpc_unary_promote_args *up_args; + GPR_ASSERT(fd); if (fd == pollset->data.ptr) return; if (!pollset->counter) { @@ -358,92 +299,100 @@ static void unary_poll_pollset_add_fd(grpc_pollset *pollset, grpc_fd *fd) { fds[0] = pollset->data.ptr; fds[1] = fd; - if (!grpc_fd_is_orphaned(fds[0])) { + if (fds[0] == NULL) { + pollset->data.ptr = fd; + GRPC_FD_REF(fd, "basicpoll"); + } else if (!grpc_fd_is_orphaned(fds[0])) { grpc_platform_become_multipoller(pollset, fds, GPR_ARRAY_SIZE(fds)); - grpc_fd_unref(fds[0]); + GRPC_FD_UNREF(fds[0], "basicpoll"); } else { /* old fd is orphaned and we haven't cleaned it up until now, so remain a * unary poller */ - grpc_fd_unref(fds[0]); + GRPC_FD_UNREF(fds[0], "basicpoll"); pollset->data.ptr = fd; - grpc_fd_ref(fd); + GRPC_FD_REF(fd, "basicpoll"); } return; } /* Now we need to promote. This needs to happen when we're not polling. Since * this may be called from poll, the wait needs to happen asynchronously. */ - grpc_fd_ref(fd); + GRPC_FD_REF(fd, "basicpoll_add"); pollset->in_flight_cbs++; up_args = gpr_malloc(sizeof(*up_args)); up_args->pollset = pollset; up_args->fd = fd; up_args->original_vtable = pollset->vtable; - up_args->promotion_closure.cb = unary_poll_do_promote; + up_args->promotion_closure.cb = basic_do_promote; up_args->promotion_closure.cb_arg = up_args; grpc_iomgr_add_callback(&up_args->promotion_closure); grpc_pollset_kick(pollset); } -static void unary_poll_pollset_del_fd(grpc_pollset *pollset, grpc_fd *fd) { +static void basic_pollset_del_fd(grpc_pollset *pollset, grpc_fd *fd) { + GPR_ASSERT(fd); if (fd == pollset->data.ptr) { - grpc_fd_unref(pollset->data.ptr); - become_empty_pollset(pollset); + GRPC_FD_UNREF(pollset->data.ptr, "basicpoll"); + pollset->data.ptr = NULL; } } -static int unary_poll_pollset_maybe_work(grpc_pollset *pollset, - gpr_timespec deadline, - gpr_timespec now, - int allow_synchronous_callback) { +static int basic_pollset_maybe_work(grpc_pollset *pollset, + gpr_timespec deadline, gpr_timespec now, + int allow_synchronous_callback) { struct pollfd pfd[2]; grpc_fd *fd; grpc_fd_watcher fd_watcher; + grpc_kick_fd_info *kfd; int timeout; int r; + int nfds; - if (pollset->counter) { - return 0; - } if (pollset->in_flight_cbs) { /* Give do_promote priority so we don't starve it out */ - return 0; + gpr_mu_unlock(&pollset->mu); + gpr_mu_lock(&pollset->mu); + return 1; } fd = pollset->data.ptr; - if (grpc_fd_is_orphaned(fd)) { - grpc_fd_unref(fd); - become_empty_pollset(pollset); - return 0; + if (fd && grpc_fd_is_orphaned(fd)) { + GRPC_FD_UNREF(fd, "basicpoll"); + fd = pollset->data.ptr = NULL; } - if (gpr_time_cmp(deadline, gpr_inf_future) == 0) { - timeout = -1; - } else { - timeout = gpr_time_to_millis(gpr_time_sub(deadline, now)); - if (timeout <= 0) { - return 1; - } - } - pfd[0].fd = grpc_pollset_kick_pre_poll(&pollset->kick_state); - if (pfd[0].fd < 0) { + timeout = grpc_poll_deadline_to_millis_timeout(deadline, now); + kfd = grpc_pollset_kick_pre_poll(&pollset->kick_state); + if (kfd == NULL) { /* Already kicked */ return 1; } + pfd[0].fd = GRPC_POLLSET_KICK_GET_FD(kfd); pfd[0].events = POLLIN; pfd[0].revents = 0; - pfd[1].fd = fd->fd; - pfd[1].revents = 0; - pollset->counter = 1; - gpr_mu_unlock(&pollset->mu); - - pfd[1].events = grpc_fd_begin_poll(fd, pollset, POLLIN, POLLOUT, &fd_watcher); + nfds = 1; + pollset->counter++; + if (fd) { + pfd[1].fd = fd->fd; + pfd[1].revents = 0; + gpr_mu_unlock(&pollset->mu); + pfd[1].events = + grpc_fd_begin_poll(fd, pollset, POLLIN, POLLOUT, &fd_watcher); + if (pfd[1].events != 0) { + nfds++; + } + } else { + gpr_mu_unlock(&pollset->mu); + } /* poll fd count (argument 2) is shortened by one if we have no events to poll on - such that it only includes the kicker */ - r = poll(pfd, GPR_ARRAY_SIZE(pfd) - (pfd[1].events == 0), timeout); + r = poll(pfd, nfds, timeout); GRPC_TIMER_MARK(GRPC_PTAG_POLL_FINISHED, r); - grpc_fd_end_poll(&fd_watcher, pfd[1].revents & POLLIN, pfd[1].revents & POLLOUT); + if (fd) { + grpc_fd_end_poll(&fd_watcher, pfd[1].revents & POLLIN, + pfd[1].revents & POLLOUT); + } if (r < 0) { if (errno != EINTR) { @@ -453,39 +402,44 @@ static int unary_poll_pollset_maybe_work(grpc_pollset *pollset, /* do nothing */ } else { if (pfd[0].revents & POLLIN) { - grpc_pollset_kick_consume(&pollset->kick_state); - } - if (pfd[1].revents & (POLLIN | POLLHUP | POLLERR)) { - grpc_fd_become_readable(fd, allow_synchronous_callback); + grpc_pollset_kick_consume(&pollset->kick_state, kfd); } - if (pfd[1].revents & (POLLOUT | POLLHUP | POLLERR)) { - grpc_fd_become_writable(fd, allow_synchronous_callback); + if (nfds > 1) { + if (pfd[1].revents & (POLLIN | POLLHUP | POLLERR)) { + grpc_fd_become_readable(fd, allow_synchronous_callback); + } + if (pfd[1].revents & (POLLOUT | POLLHUP | POLLERR)) { + grpc_fd_become_writable(fd, allow_synchronous_callback); + } } } - grpc_pollset_kick_post_poll(&pollset->kick_state); + grpc_pollset_kick_post_poll(&pollset->kick_state, kfd); gpr_mu_lock(&pollset->mu); - pollset->counter = 0; - gpr_cv_broadcast(&pollset->cv); + pollset->counter--; return 1; } -static void unary_poll_pollset_destroy(grpc_pollset *pollset) { +static void basic_pollset_destroy(grpc_pollset *pollset) { GPR_ASSERT(pollset->counter == 0); - grpc_fd_unref(pollset->data.ptr); + if (pollset->data.ptr != NULL) { + GRPC_FD_UNREF(pollset->data.ptr, "basicpoll"); + pollset->data.ptr = NULL; + } } -static const grpc_pollset_vtable unary_poll_pollset = { - unary_poll_pollset_add_fd, unary_poll_pollset_del_fd, - unary_poll_pollset_maybe_work, kick_using_pollset_kick, - unary_poll_pollset_destroy}; +static const grpc_pollset_vtable basic_pollset = { + basic_pollset_add_fd, basic_pollset_del_fd, basic_pollset_maybe_work, + kick_using_pollset_kick, basic_pollset_destroy, basic_pollset_destroy}; -static void become_unary_pollset(grpc_pollset *pollset, grpc_fd *fd) { - pollset->vtable = &unary_poll_pollset; +static void become_basic_pollset(grpc_pollset *pollset, grpc_fd *fd_or_null) { + pollset->vtable = &basic_pollset; pollset->counter = 0; - pollset->data.ptr = fd; - grpc_fd_ref(fd); + pollset->data.ptr = fd_or_null; + if (fd_or_null) { + GRPC_FD_REF(fd_or_null, "basicpoll"); + } } #endif /* GPR_POSIX_POLLSET */ diff --git a/src/core/iomgr/pollset_posix.h b/src/core/iomgr/pollset_posix.h index 088ec910c2..ba3d638d41 100644 --- a/src/core/iomgr/pollset_posix.h +++ b/src/core/iomgr/pollset_posix.h @@ -36,7 +36,7 @@ #include <grpc/support/sync.h> -#include "src/core/iomgr/pollset_kick.h" +#include "src/core/iomgr/pollset_kick_posix.h" typedef struct grpc_pollset_vtable grpc_pollset_vtable; @@ -52,11 +52,11 @@ typedef struct grpc_pollset { few fds, and an epoll() based implementation for many fds */ const grpc_pollset_vtable *vtable; gpr_mu mu; - gpr_cv cv; grpc_pollset_kick_state kick_state; int counter; int in_flight_cbs; int shutting_down; + int called_shutdown; void (*shutdown_done_cb)(void *arg); void *shutdown_done_arg; union { @@ -71,11 +71,11 @@ struct grpc_pollset_vtable { int (*maybe_work)(grpc_pollset *pollset, gpr_timespec deadline, gpr_timespec now, int allow_synchronous_callback); void (*kick)(grpc_pollset *pollset); + void (*finish_shutdown)(grpc_pollset *pollset); void (*destroy)(grpc_pollset *pollset); }; #define GRPC_POLLSET_MU(pollset) (&(pollset)->mu) -#define GRPC_POLLSET_CV(pollset) (&(pollset)->cv) /* Add an fd to a pollset */ void grpc_pollset_add_fd(grpc_pollset *pollset, struct grpc_fd *fd); @@ -94,11 +94,14 @@ int grpc_kick_read_fd(grpc_pollset *p); /* Call after polling has been kicked to leave the kicked state */ void grpc_kick_drain(grpc_pollset *p); -/* All fds get added to a backup pollset to ensure that progress is made - regardless of applications listening to events. Relying on this is slow - however (the backup pollset only listens every 100ms or so) - so it's not - to be relied on. */ -grpc_pollset *grpc_backup_pollset(void); +/* Convert a timespec to milliseconds: + - very small or negative poll times are clamped to zero to do a + non-blocking poll (which becomes spin polling) + - other small values are rounded up to one millisecond + - longer than a millisecond polls are rounded up to the next nearest + millisecond to avoid spinning + - infinite timeouts are converted to -1 */ +int grpc_poll_deadline_to_millis_timeout(gpr_timespec deadline, gpr_timespec now); /* turn a pollset into a multipoller: platform specific */ typedef void (*grpc_platform_become_multipoller_type)(grpc_pollset *pollset, diff --git a/src/core/iomgr/pollset_kick.h b/src/core/iomgr/pollset_set.h index cc9357de1f..98e3b552a7 100644 --- a/src/core/iomgr/pollset_kick.h +++ b/src/core/iomgr/pollset_set.h @@ -31,44 +31,29 @@ * */ -#ifndef GRPC_INTERNAL_CORE_IOMGR_POLLSET_KICK_H -#define GRPC_INTERNAL_CORE_IOMGR_POLLSET_KICK_H +#ifndef GRPC_INTERNAL_CORE_IOMGR_POLLSET_SET_H +#define GRPC_INTERNAL_CORE_IOMGR_POLLSET_SET_H -#include <grpc/support/port_platform.h> +#include "src/core/iomgr/pollset.h" + +/* A grpc_pollset_set is a set of pollsets that are interested in an + action. Adding a pollset to a pollset_set automatically adds any + fd's (etc) that have been registered with the set_set with that pollset. + Registering fd's automatically adds them to all current pollsets. */ #ifdef GPR_POSIX_SOCKET -#include "src/core/iomgr/pollset_kick_posix.h" +#include "src/core/iomgr/pollset_set_posix.h" #endif #ifdef GPR_WIN32 -#include "src/core/iomgr/pollset_kick_windows.h" +#include "src/core/iomgr/pollset_set_windows.h" #endif -/* This is an abstraction around the typical pipe mechanism for waking up a - thread sitting in a poll() style call. */ - -void grpc_pollset_kick_global_init(void); -void grpc_pollset_kick_global_destroy(void); - -void grpc_pollset_kick_init(grpc_pollset_kick_state *kick_state); -void grpc_pollset_kick_destroy(grpc_pollset_kick_state *kick_state); - -/* Guarantees a pure posix implementation rather than a specialized one, if - * applicable. Intended for testing. */ -void grpc_pollset_kick_global_init_fallback_fd(void); - -/* Must be called before entering poll(). If return value is -1, this consumed - an existing kick. Otherwise the return value is an FD to add to the poll set. - */ -int grpc_pollset_kick_pre_poll(grpc_pollset_kick_state *kick_state); - -/* Consume an existing kick. Must be called after poll returns that the fd was - readable, and before calling kick_post_poll. */ -void grpc_pollset_kick_consume(grpc_pollset_kick_state *kick_state); - -/* Must be called after pre_poll, and after consume if applicable */ -void grpc_pollset_kick_post_poll(grpc_pollset_kick_state *kick_state); - -void grpc_pollset_kick_kick(grpc_pollset_kick_state *kick_state); +void grpc_pollset_set_init(grpc_pollset_set *pollset_set); +void grpc_pollset_set_destroy(grpc_pollset_set *pollset_set); +void grpc_pollset_set_add_pollset(grpc_pollset_set *pollset_set, + grpc_pollset *pollset); +void grpc_pollset_set_del_pollset(grpc_pollset_set *pollset_set, + grpc_pollset *pollset); -#endif /* GRPC_INTERNAL_CORE_IOMGR_POLLSET_KICK_H */ +#endif /* GRPC_INTERNAL_CORE_IOMGR_POLLSET_H */ diff --git a/src/core/iomgr/pollset_set_posix.c b/src/core/iomgr/pollset_set_posix.c new file mode 100644 index 0000000000..005e938398 --- /dev/null +++ b/src/core/iomgr/pollset_set_posix.c @@ -0,0 +1,125 @@ +/* + * + * 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 <stdlib.h> +#include <string.h> + +#include <grpc/support/alloc.h> +#include <grpc/support/useful.h> + +#include "src/core/iomgr/pollset_set.h" + +void grpc_pollset_set_init(grpc_pollset_set *pollset_set) { + memset(pollset_set, 0, sizeof(*pollset_set)); + gpr_mu_init(&pollset_set->mu); +} + +void grpc_pollset_set_destroy(grpc_pollset_set *pollset_set) { + size_t i; + gpr_mu_destroy(&pollset_set->mu); + for (i = 0; i < pollset_set->fd_count; i++) { + GRPC_FD_UNREF(pollset_set->fds[i], "pollset"); + } + gpr_free(pollset_set->pollsets); + gpr_free(pollset_set->fds); +} + +void grpc_pollset_set_add_pollset(grpc_pollset_set *pollset_set, + grpc_pollset *pollset) { + size_t i; + gpr_mu_lock(&pollset_set->mu); + if (pollset_set->pollset_count == pollset_set->pollset_capacity) { + pollset_set->pollset_capacity = + GPR_MAX(8, 2 * pollset_set->pollset_capacity); + pollset_set->pollsets = + gpr_realloc(pollset_set->pollsets, pollset_set->pollset_capacity * + sizeof(*pollset_set->pollsets)); + } + pollset_set->pollsets[pollset_set->pollset_count++] = pollset; + for (i = 0; i < pollset_set->fd_count; i++) { + grpc_pollset_add_fd(pollset, pollset_set->fds[i]); + } + gpr_mu_unlock(&pollset_set->mu); +} + +void grpc_pollset_set_del_pollset(grpc_pollset_set *pollset_set, + grpc_pollset *pollset) { + size_t i; + gpr_mu_lock(&pollset_set->mu); + for (i = 0; i < pollset_set->pollset_count; i++) { + if (pollset_set->pollsets[i] == pollset) { + pollset_set->pollset_count--; + GPR_SWAP(grpc_pollset *, pollset_set->pollsets[i], + pollset_set->pollsets[pollset_set->pollset_count]); + break; + } + } + gpr_mu_unlock(&pollset_set->mu); +} + +void grpc_pollset_set_add_fd(grpc_pollset_set *pollset_set, grpc_fd *fd) { + size_t i; + gpr_mu_lock(&pollset_set->mu); + if (pollset_set->fd_count == pollset_set->fd_capacity) { + pollset_set->fd_capacity = GPR_MAX(8, 2 * pollset_set->fd_capacity); + pollset_set->fds = gpr_realloc( + pollset_set->fds, pollset_set->fd_capacity * sizeof(*pollset_set->fds)); + } + GRPC_FD_REF(fd, "pollset_set"); + pollset_set->fds[pollset_set->fd_count++] = fd; + for (i = 0; i < pollset_set->pollset_count; i++) { + grpc_pollset_add_fd(pollset_set->pollsets[i], fd); + } + gpr_mu_unlock(&pollset_set->mu); +} + +void grpc_pollset_set_del_fd(grpc_pollset_set *pollset_set, grpc_fd *fd) { + size_t i; + gpr_mu_lock(&pollset_set->mu); + for (i = 0; i < pollset_set->fd_count; i++) { + if (pollset_set->fds[i] == fd) { + pollset_set->fd_count--; + GPR_SWAP(grpc_fd *, pollset_set->fds[i], + pollset_set->fds[pollset_set->pollset_count]); + GRPC_FD_UNREF(fd, "pollset_set"); + break; + } + } + gpr_mu_unlock(&pollset_set->mu); +} + +#endif /* GPR_POSIX_SOCKET */ diff --git a/src/core/iomgr/pollset_set_posix.h b/src/core/iomgr/pollset_set_posix.h new file mode 100644 index 0000000000..e88740bde1 --- /dev/null +++ b/src/core/iomgr/pollset_set_posix.h @@ -0,0 +1,55 @@ +/* + * + * 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. + * + */ + +#ifndef GRPC_INTERNAL_CORE_IOMGR_POLLSET_SET_POSIX_H +#define GRPC_INTERNAL_CORE_IOMGR_POLLSET_SET_POSIX_H + +#include "src/core/iomgr/fd_posix.h" +#include "src/core/iomgr/pollset_posix.h" + +typedef struct grpc_pollset_set { + gpr_mu mu; + + size_t pollset_count; + size_t pollset_capacity; + grpc_pollset **pollsets; + + size_t fd_count; + size_t fd_capacity; + grpc_fd **fds; +} grpc_pollset_set; + +void grpc_pollset_set_add_fd(grpc_pollset_set *pollset_set, grpc_fd *fd); +void grpc_pollset_set_del_fd(grpc_pollset_set *pollset_set, grpc_fd *fd); + +#endif /* GRPC_INTERNAL_CORE_IOMGR_POLLSET_WINDOWS_H */ diff --git a/src/core/iomgr/pollset_set_windows.c b/src/core/iomgr/pollset_set_windows.c new file mode 100644 index 0000000000..b9c209cd2c --- /dev/null +++ b/src/core/iomgr/pollset_set_windows.c @@ -0,0 +1,50 @@ +/* + * + * 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_WINSOCK_SOCKET + +#include "src/core/iomgr/pollset_set.h" + +void grpc_pollset_set_init(grpc_pollset_set *pollset_set) {} + +void grpc_pollset_set_destroy(grpc_pollset_set *pollset_set) {} + +void grpc_pollset_set_add_pollset(grpc_pollset_set *pollset_set, + grpc_pollset *pollset) {} + +void grpc_pollset_set_del_pollset(grpc_pollset_set *pollset_set, + grpc_pollset *pollset) {} + +#endif /* GPR_WINSOCK_SOCKET */ diff --git a/src/core/iomgr/pollset_kick_windows.h b/src/core/iomgr/pollset_set_windows.h index c675c119ab..cada0d2b61 100644 --- a/src/core/iomgr/pollset_kick_windows.h +++ b/src/core/iomgr/pollset_set_windows.h @@ -31,18 +31,9 @@ * */ -#ifndef GRPC_INTERNAL_CORE_IOMGR_POLLSET_KICK_WINDOWS_H -#define GRPC_INTERNAL_CORE_IOMGR_POLLSET_KICK_WINDOWS_H +#ifndef GRPC_INTERNAL_CORE_IOMGR_POLLSET_SET_WINDOWS_H +#define GRPC_INTERNAL_CORE_IOMGR_POLLSET_SET_WINDOWS_H -#include <grpc/support/sync.h> +typedef struct grpc_pollset_set { void *unused; } grpc_pollset_set; -/* There isn't really any such thing as a pollset under Windows, due to the - nature of the IO completion ports. */ - -struct grpc_kick_fd_info; - -typedef struct grpc_pollset_kick_state { - int unused; -} grpc_pollset_kick_state; - -#endif /* GRPC_INTERNAL_CORE_IOMGR_POLLSET_KICK_WINDOWS_H */ +#endif /* GRPC_INTERNAL_CORE_IOMGR_POLLSET_WINDOWS_H */ diff --git a/src/core/iomgr/pollset_windows.c b/src/core/iomgr/pollset_windows.c index b1f4c09a2c..9deb0fa8fa 100644 --- a/src/core/iomgr/pollset_windows.c +++ b/src/core/iomgr/pollset_windows.c @@ -46,10 +46,7 @@ set of features for the sake of the rest of grpc. But grpc_pollset_work won't actually do any polling, and return as quickly as possible. */ -void grpc_pollset_init(grpc_pollset *pollset) { - gpr_mu_init(&pollset->mu); - gpr_cv_init(&pollset->cv); -} +void grpc_pollset_init(grpc_pollset *pollset) { gpr_mu_init(&pollset->mu); } void grpc_pollset_shutdown(grpc_pollset *pollset, void (*shutdown_done)(void *arg), @@ -59,7 +56,6 @@ void grpc_pollset_shutdown(grpc_pollset *pollset, void grpc_pollset_destroy(grpc_pollset *pollset) { gpr_mu_destroy(&pollset->mu); - gpr_cv_destroy(&pollset->cv); } int grpc_pollset_work(grpc_pollset *pollset, gpr_timespec deadline) { @@ -77,6 +73,6 @@ int grpc_pollset_work(grpc_pollset *pollset, gpr_timespec deadline) { return 0 /* GPR_FALSE */; } -void grpc_pollset_kick(grpc_pollset *p) { } +void grpc_pollset_kick(grpc_pollset *p) {} -#endif /* GPR_WINSOCK_SOCKET */ +#endif /* GPR_WINSOCK_SOCKET */ diff --git a/src/core/iomgr/pollset_windows.h b/src/core/iomgr/pollset_windows.h index e1115bac4f..cbbd9efdd1 100644 --- a/src/core/iomgr/pollset_windows.h +++ b/src/core/iomgr/pollset_windows.h @@ -37,7 +37,6 @@ #include <windows.h> #include <grpc/support/sync.h> -#include "src/core/iomgr/pollset_kick.h" #include "src/core/iomgr/socket_windows.h" /* There isn't really any such thing as a pollset under Windows, due to the @@ -45,12 +44,8 @@ and a condition variable, as this is the minimal set of features we need implemented for the rest of grpc. But we won't use them directly. */ -typedef struct grpc_pollset { - gpr_mu mu; - gpr_cv cv; -} grpc_pollset; +typedef struct grpc_pollset { gpr_mu mu; } grpc_pollset; #define GRPC_POLLSET_MU(pollset) (&(pollset)->mu) -#define GRPC_POLLSET_CV(pollset) (&(pollset)->cv) -#endif /* GRPC_INTERNAL_CORE_IOMGR_POLLSET_WINDOWS_H */ +#endif /* GRPC_INTERNAL_CORE_IOMGR_POLLSET_WINDOWS_H */ diff --git a/src/core/iomgr/tcp_client.h b/src/core/iomgr/tcp_client.h index 2e91497fb7..0fa08b52b0 100644 --- a/src/core/iomgr/tcp_client.h +++ b/src/core/iomgr/tcp_client.h @@ -35,14 +35,18 @@ #define GRPC_INTERNAL_CORE_IOMGR_TCP_CLIENT_H #include "src/core/iomgr/endpoint.h" +#include "src/core/iomgr/pollset_set.h" #include "src/core/iomgr/sockaddr.h" #include <grpc/support/time.h> /* Asynchronously connect to an address (specified as (addr, len)), and call cb with arg and the completed connection when done (or call cb with arg and - NULL on failure) */ + NULL on failure). + interested_parties points to a set of pollsets that would be interested + in this connection being established (in order to continue their work) */ void grpc_tcp_client_connect(void (*cb)(void *arg, grpc_endpoint *tcp), - void *arg, const struct sockaddr *addr, - int addr_len, gpr_timespec deadline); + void *arg, grpc_pollset_set *interested_parties, + const struct sockaddr *addr, int addr_len, + gpr_timespec deadline); -#endif /* GRPC_INTERNAL_CORE_IOMGR_TCP_CLIENT_H */ +#endif /* GRPC_INTERNAL_CORE_IOMGR_TCP_CLIENT_H */ diff --git a/src/core/iomgr/tcp_client_posix.c b/src/core/iomgr/tcp_client_posix.c index 668a651947..bbf7711588 100644 --- a/src/core/iomgr/tcp_client_posix.c +++ b/src/core/iomgr/tcp_client_posix.c @@ -113,8 +113,6 @@ static void on_writable(void *acp, int success) { void (*cb)(void *arg, grpc_endpoint *tcp) = ac->cb; void *cb_arg = ac->cb_arg; - grpc_alarm_cancel(&ac->alarm); - if (success) { do { so_error_size = sizeof(so_error); @@ -167,26 +165,30 @@ static void on_writable(void *acp, int success) { finish: gpr_mu_lock(&ac->mu); if (!ep) { - grpc_fd_orphan(ac->fd, NULL, NULL); + grpc_fd_orphan(ac->fd, NULL, "tcp_client_orphan"); } done = (--ac->refs == 0); gpr_mu_unlock(&ac->mu); if (done) { gpr_mu_destroy(&ac->mu); gpr_free(ac); + } else { + grpc_alarm_cancel(&ac->alarm); } cb(cb_arg, ep); } void grpc_tcp_client_connect(void (*cb)(void *arg, grpc_endpoint *ep), - void *arg, const struct sockaddr *addr, - int addr_len, gpr_timespec deadline) { + void *arg, grpc_pollset_set *interested_parties, + const struct sockaddr *addr, int addr_len, + gpr_timespec deadline) { int fd; grpc_dualstack_mode dsmode; int err; async_connect *ac; struct sockaddr_in6 addr6_v4mapped; struct sockaddr_in addr4_copy; + grpc_fd *fdobj; char *name; char *addr_str; @@ -218,31 +220,35 @@ void grpc_tcp_client_connect(void (*cb)(void *arg, grpc_endpoint *ep), grpc_sockaddr_to_string(&addr_str, addr, 1); gpr_asprintf(&name, "tcp-client:%s", addr_str); + fdobj = grpc_fd_create(fd, name); + if (err >= 0) { - gpr_log(GPR_DEBUG, "instant connect"); - cb(arg, grpc_tcp_create(grpc_fd_create(fd, name), - GRPC_TCP_DEFAULT_READ_SLICE_SIZE)); + cb(arg, grpc_tcp_create(fdobj, GRPC_TCP_DEFAULT_READ_SLICE_SIZE)); goto done; } if (errno != EWOULDBLOCK && errno != EINPROGRESS) { gpr_log(GPR_ERROR, "connect error to '%s': %s", addr_str, strerror(errno)); - close(fd); + grpc_fd_orphan(fdobj, NULL, "tcp_client_connect_error"); cb(arg, NULL); goto done; } + grpc_pollset_set_add_fd(interested_parties, fdobj); + ac = gpr_malloc(sizeof(async_connect)); ac->cb = cb; ac->cb_arg = arg; - ac->fd = grpc_fd_create(fd, name); + ac->fd = fdobj; gpr_mu_init(&ac->mu); ac->refs = 2; ac->write_closure.cb = on_writable; ac->write_closure.cb_arg = ac; + gpr_mu_lock(&ac->mu); grpc_alarm_init(&ac->alarm, deadline, on_alarm, ac, gpr_now()); grpc_fd_notify_on_write(ac->fd, &ac->write_closure); + gpr_mu_unlock(&ac->mu); done: gpr_free(name); diff --git a/src/core/iomgr/tcp_client_windows.c b/src/core/iomgr/tcp_client_windows.c index 2a040ffc4a..b1a169b519 100644 --- a/src/core/iomgr/tcp_client_windows.c +++ b/src/core/iomgr/tcp_client_windows.c @@ -52,7 +52,7 @@ #include "src/core/iomgr/socket_windows.h" typedef struct { - void(*cb)(void *arg, grpc_endpoint *tcp); + void (*cb)(void *arg, grpc_endpoint *tcp); void *cb_arg; gpr_mu mu; grpc_winsocket *socket; @@ -86,7 +86,7 @@ static void on_connect(void *acp, int from_iocp) { SOCKET sock = ac->socket->socket; grpc_endpoint *ep = NULL; grpc_winsocket_callback_info *info = &ac->socket->write_info; - void(*cb)(void *arg, grpc_endpoint *tcp) = ac->cb; + void (*cb)(void *arg, grpc_endpoint *tcp) = ac->cb; void *cb_arg = ac->cb_arg; int aborted; @@ -99,8 +99,7 @@ static void on_connect(void *acp, int from_iocp) { DWORD transfered_bytes = 0; DWORD flags; BOOL wsa_success = WSAGetOverlappedResult(sock, &info->overlapped, - &transfered_bytes, FALSE, - &flags); + &transfered_bytes, FALSE, &flags); info->outstanding = 0; GPR_ASSERT(transfered_bytes == 0); if (!wsa_success) { @@ -138,9 +137,10 @@ static void on_connect(void *acp, int from_iocp) { /* Tries to issue one async connection, then schedules both an IOCP notification request for the connection, and one timeout alert. */ -void grpc_tcp_client_connect(void(*cb)(void *arg, grpc_endpoint *tcp), - void *arg, const struct sockaddr *addr, - int addr_len, gpr_timespec deadline) { +void grpc_tcp_client_connect(void (*cb)(void *arg, grpc_endpoint *tcp), + void *arg, grpc_pollset_set *interested_parties, + const struct sockaddr *addr, int addr_len, + gpr_timespec deadline) { SOCKET sock = INVALID_SOCKET; BOOL success; int status; @@ -175,9 +175,9 @@ void grpc_tcp_client_connect(void(*cb)(void *arg, grpc_endpoint *tcp), /* Grab the function pointer for ConnectEx for that specific socket. It may change depending on the interface. */ - status = WSAIoctl(sock, SIO_GET_EXTENSION_FUNCTION_POINTER, - &guid, sizeof(guid), &ConnectEx, sizeof(ConnectEx), - &ioctl_num_bytes, NULL, NULL); + status = + WSAIoctl(sock, SIO_GET_EXTENSION_FUNCTION_POINTER, &guid, sizeof(guid), + &ConnectEx, sizeof(ConnectEx), &ioctl_num_bytes, NULL, NULL); if (status != 0) { message = "Unable to retrieve ConnectEx pointer: %s"; @@ -186,8 +186,7 @@ void grpc_tcp_client_connect(void(*cb)(void *arg, grpc_endpoint *tcp), grpc_sockaddr_make_wildcard6(0, &local_address); - status = bind(sock, (struct sockaddr *) &local_address, - sizeof(local_address)); + status = bind(sock, (struct sockaddr *)&local_address, sizeof(local_address)); if (status != 0) { message = "Unable to bind socket: %s"; goto failure; @@ -233,4 +232,4 @@ failure: cb(arg, NULL); } -#endif /* GPR_WINSOCK_SOCKET */ +#endif /* GPR_WINSOCK_SOCKET */ diff --git a/src/core/iomgr/tcp_posix.c b/src/core/iomgr/tcp_posix.c index 2f19f9d442..9ad089af66 100644 --- a/src/core/iomgr/tcp_posix.c +++ b/src/core/iomgr/tcp_posix.c @@ -266,7 +266,7 @@ typedef struct { grpc_endpoint base; grpc_fd *em_fd; int fd; - int iov_size; /* Number of slices to allocate per read attempt */ + int iov_size; /* Number of slices to allocate per read attempt */ int finished_edge; size_t slice_size; gpr_refcount refcount; @@ -295,7 +295,7 @@ static void grpc_tcp_shutdown(grpc_endpoint *ep) { static void grpc_tcp_unref(grpc_tcp *tcp) { int refcount_zero = gpr_unref(&tcp->refcount); if (refcount_zero) { - grpc_fd_orphan(tcp->em_fd, NULL, NULL); + grpc_fd_orphan(tcp->em_fd, NULL, "tcp_unref_orphan"); gpr_free(tcp); } } @@ -412,8 +412,7 @@ static void grpc_tcp_continue_read(grpc_tcp *tcp) { ++tcp->iov_size; } GPR_ASSERT(slice_state_has_available(&read_state)); - slice_state_transfer_ownership(&read_state, &final_slices, - &final_nslices); + slice_state_transfer_ownership(&read_state, &final_slices, &final_nslices); call_read_cb(tcp, final_slices, final_nslices, GRPC_ENDPOINT_CB_OK); slice_state_destroy(&read_state); grpc_tcp_unref(tcp); diff --git a/src/core/iomgr/tcp_server_posix.c b/src/core/iomgr/tcp_server_posix.c index c49f3e1518..5854031c9b 100644 --- a/src/core/iomgr/tcp_server_posix.c +++ b/src/core/iomgr/tcp_server_posix.c @@ -85,6 +85,7 @@ typedef struct { } addr; int addr_len; grpc_iomgr_closure read_closure; + grpc_iomgr_closure destroyed_closure; } server_port; static void unlink_if_unix_domain_socket(const struct sockaddr_un *un) { @@ -101,13 +102,15 @@ struct grpc_tcp_server { void *cb_arg; gpr_mu mu; - gpr_cv cv; /* active port count: how many ports are actually still listening */ size_t active_ports; /* destroyed port count: how many ports are completely destroyed */ size_t destroyed_ports; + /* is this server shutting down? (boolean) */ + int shutdown; + /* all listening ports */ server_port *ports; size_t nports; @@ -116,14 +119,19 @@ struct grpc_tcp_server { /* shutdown callback */ void (*shutdown_complete)(void *); void *shutdown_complete_arg; + + /* all pollsets interested in new connections */ + grpc_pollset **pollsets; + /* number of pollsets in the pollsets array */ + size_t pollset_count; }; grpc_tcp_server *grpc_tcp_server_create(void) { grpc_tcp_server *s = gpr_malloc(sizeof(grpc_tcp_server)); gpr_mu_init(&s->mu); - gpr_cv_init(&s->cv); s->active_ports = 0; s->destroyed_ports = 0; + s->shutdown = 0; s->cb = NULL; s->cb_arg = NULL; s->ports = gpr_malloc(sizeof(server_port) * INIT_PORT_CAP); @@ -136,7 +144,6 @@ static void finish_shutdown(grpc_tcp_server *s) { s->shutdown_complete(s->shutdown_complete_arg); gpr_mu_destroy(&s->mu); - gpr_cv_destroy(&s->cv); gpr_free(s->ports); gpr_free(s); @@ -156,40 +163,60 @@ static void destroyed_port(void *server, int success) { static void dont_care_about_shutdown_completion(void *ignored) {} +/* called when all listening endpoints have been shutdown, so no further + events will be received on them - at this point it's safe to destroy + things */ +static void deactivated_all_ports(grpc_tcp_server *s) { + size_t i; + + /* delete ALL the things */ + gpr_mu_lock(&s->mu); + + if (!s->shutdown) { + gpr_mu_unlock(&s->mu); + return; + } + + if (s->nports) { + for (i = 0; i < s->nports; i++) { + server_port *sp = &s->ports[i]; + if (sp->addr.sockaddr.sa_family == AF_UNIX) { + unlink_if_unix_domain_socket(&sp->addr.un); + } + sp->destroyed_closure.cb = destroyed_port; + sp->destroyed_closure.cb_arg = s; + grpc_fd_orphan(sp->emfd, &sp->destroyed_closure, "tcp_listener_shutdown"); + } + gpr_mu_unlock(&s->mu); + } else { + gpr_mu_unlock(&s->mu); + finish_shutdown(s); + } +} + void grpc_tcp_server_destroy( grpc_tcp_server *s, void (*shutdown_complete)(void *shutdown_complete_arg), void *shutdown_complete_arg) { size_t i; gpr_mu_lock(&s->mu); + GPR_ASSERT(!s->shutdown); + s->shutdown = 1; + s->shutdown_complete = shutdown_complete ? shutdown_complete : dont_care_about_shutdown_completion; s->shutdown_complete_arg = shutdown_complete_arg; /* shutdown all fd's */ - for (i = 0; i < s->nports; i++) { - grpc_fd_shutdown(s->ports[i].emfd); - } - /* wait while that happens */ - /* TODO(ctiller): make this asynchronous also */ - while (s->active_ports) { - gpr_cv_wait(&s->cv, &s->mu, gpr_inf_future); - } - - /* delete ALL the things */ - if (s->nports) { + if (s->active_ports) { for (i = 0; i < s->nports; i++) { - server_port *sp = &s->ports[i]; - if (sp->addr.sockaddr.sa_family == AF_UNIX) { - unlink_if_unix_domain_socket(&sp->addr.un); - } - grpc_fd_orphan(sp->emfd, destroyed_port, s); + grpc_fd_shutdown(s->ports[i].emfd); } gpr_mu_unlock(&s->mu); } else { gpr_mu_unlock(&s->mu); - finish_shutdown(s); + deactivated_all_ports(s); } } @@ -274,6 +301,8 @@ error: /* event manager callback when reads are ready */ static void on_read(void *arg, int success) { server_port *sp = arg; + grpc_fd *fdobj; + size_t i; if (!success) { goto error; @@ -306,12 +335,18 @@ static void on_read(void *arg, int success) { grpc_sockaddr_to_string(&addr_str, (struct sockaddr *)&addr, 1); gpr_asprintf(&name, "tcp-server-connection:%s", addr_str); + fdobj = grpc_fd_create(fd, name); + /* TODO(ctiller): revise this when we have server-side sharding + of channels -- we certainly should not be automatically adding every + incoming channel to every pollset owned by the server */ + for (i = 0; i < sp->server->pollset_count; i++) { + grpc_pollset_add_fd(sp->server->pollsets[i], fdobj); + } sp->server->cb(sp->server->cb_arg, - grpc_tcp_create(grpc_fd_create(fd, name), - GRPC_TCP_DEFAULT_READ_SLICE_SIZE)); + grpc_tcp_create(fdobj, GRPC_TCP_DEFAULT_READ_SLICE_SIZE)); - gpr_free(addr_str); gpr_free(name); + gpr_free(addr_str); } abort(); @@ -319,9 +354,11 @@ static void on_read(void *arg, int success) { error: gpr_mu_lock(&sp->server->mu); if (0 == --sp->server->active_ports) { - gpr_cv_broadcast(&sp->server->cv); + gpr_mu_unlock(&sp->server->mu); + deactivated_all_ports(sp->server); + } else { + gpr_mu_unlock(&sp->server->mu); } - gpr_mu_unlock(&sp->server->mu); } static int add_socket_to_server(grpc_tcp_server *s, int fd, @@ -452,6 +489,8 @@ void grpc_tcp_server_start(grpc_tcp_server *s, grpc_pollset **pollsets, GPR_ASSERT(s->active_ports == 0); s->cb = cb; s->cb_arg = cb_arg; + s->pollsets = pollsets; + s->pollset_count = pollset_count; for (i = 0; i < s->nports; i++) { for (j = 0; j < pollset_count; j++) { grpc_pollset_add_fd(pollsets[j], s->ports[i].emfd); diff --git a/src/core/security/client_auth_filter.c b/src/core/security/client_auth_filter.c index 0867bd7053..e9bd45db68 100644 --- a/src/core/security/client_auth_filter.c +++ b/src/core/security/client_auth_filter.c @@ -53,6 +53,11 @@ typedef struct { grpc_credentials *creds; grpc_mdstr *host; grpc_mdstr *method; + /* pollset bound to this call; if we need to make external + network requests, they should be done under this pollset + so that work can progress when this call wants work to + progress */ + grpc_pollset *pollset; grpc_transport_op op; size_t op_md_idx; int sent_initial_metadata; @@ -161,8 +166,9 @@ static void send_security_metadata(grpc_call_element *elem, service_url = build_service_url(chand->security_connector->base.url_scheme, calld); calld->op = *op; /* Copy op (originates from the caller's stack). */ - grpc_credentials_get_request_metadata(calld->creds, service_url, - on_credentials_metadata, elem); + GPR_ASSERT(calld->pollset); + grpc_credentials_get_request_metadata( + calld->creds, calld->pollset, service_url, on_credentials_metadata, elem); gpr_free(service_url); } @@ -196,6 +202,10 @@ static void auth_start_transport_op(grpc_call_element *elem, /* TODO(jboeuf): write the call auth context. */ + if (op->bind_pollset) { + calld->pollset = op->bind_pollset; + } + if (op->send_ops && !calld->sent_initial_metadata) { size_t nops = op->send_ops->nops; grpc_stream_op *ops = op->send_ops->ops; @@ -258,6 +268,7 @@ static void init_call_elem(grpc_call_element *elem, calld->creds = NULL; calld->host = NULL; calld->method = NULL; + calld->pollset = NULL; calld->sent_initial_metadata = 0; GPR_ASSERT(!initial_op || !initial_op->send_ops); @@ -296,13 +307,10 @@ static void init_channel_elem(grpc_channel_element *elem, chand->security_connector = (grpc_channel_security_connector *)grpc_security_connector_ref(sc); chand->md_ctx = metadata_context; - chand->authority_string = - grpc_mdstr_from_string(chand->md_ctx, ":authority"); + chand->authority_string = grpc_mdstr_from_string(chand->md_ctx, ":authority"); chand->path_string = grpc_mdstr_from_string(chand->md_ctx, ":path"); - chand->error_msg_key = - grpc_mdstr_from_string(chand->md_ctx, "grpc-message"); - chand->status_key = - grpc_mdstr_from_string(chand->md_ctx, "grpc-status"); + chand->error_msg_key = grpc_mdstr_from_string(chand->md_ctx, "grpc-message"); + chand->status_key = grpc_mdstr_from_string(chand->md_ctx, "grpc-status"); } /* Destructor for channel data */ @@ -326,6 +334,6 @@ static void destroy_channel_elem(grpc_channel_element *elem) { } const grpc_channel_filter grpc_client_auth_filter = { - auth_start_transport_op, channel_op, sizeof(call_data), init_call_elem, - destroy_call_elem, sizeof(channel_data), init_channel_elem, - destroy_channel_elem, "client-auth"}; + auth_start_transport_op, channel_op, sizeof(call_data), + init_call_elem, destroy_call_elem, sizeof(channel_data), + init_channel_elem, destroy_channel_elem, "client-auth"}; diff --git a/src/core/security/credentials.c b/src/core/security/credentials.c index f1ae6cecbc..cf663faf2d 100644 --- a/src/core/security/credentials.c +++ b/src/core/security/credentials.c @@ -106,6 +106,7 @@ int grpc_credentials_has_request_metadata_only(grpc_credentials *creds) { } void grpc_credentials_get_request_metadata(grpc_credentials *creds, + grpc_pollset *pollset, const char *service_url, grpc_credentials_metadata_cb cb, void *user_data) { @@ -116,7 +117,8 @@ void grpc_credentials_get_request_metadata(grpc_credentials *creds, } return; } - creds->vtable->get_request_metadata(creds, service_url, cb, user_data); + creds->vtable->get_request_metadata(creds, pollset, service_url, cb, + user_data); } grpc_security_status grpc_credentials_create_security_connector( @@ -191,9 +193,7 @@ static void ssl_server_destroy(grpc_server_credentials *creds) { gpr_free(creds); } -static int ssl_has_request_metadata(const grpc_credentials *creds) { - return 0; -} +static int ssl_has_request_metadata(const grpc_credentials *creds) { return 0; } static int ssl_has_request_metadata_only(const grpc_credentials *creds) { return 0; @@ -368,8 +368,8 @@ static int jwt_has_request_metadata_only(const grpc_credentials *creds) { return 1; } - static void jwt_get_request_metadata(grpc_credentials *creds, + grpc_pollset *pollset, const char *service_url, grpc_credentials_metadata_cb cb, void *user_data) { @@ -450,6 +450,8 @@ grpc_credentials *grpc_jwt_credentials_create(const char *json_key, from an http service. */ typedef void (*grpc_fetch_oauth2_func)(grpc_credentials_metadata_request *req, + grpc_httpcli_context *http_context, + grpc_pollset *pollset, grpc_httpcli_response_cb response_cb, gpr_timespec deadline); @@ -458,6 +460,8 @@ typedef struct { gpr_mu mu; grpc_credentials_md_store *access_token_md; gpr_timespec token_expiration; + grpc_httpcli_context httpcli_context; + grpc_pollset_set pollset_set; grpc_fetch_oauth2_func fetch_func; } grpc_oauth2_token_fetcher_credentials; @@ -466,6 +470,7 @@ static void oauth2_token_fetcher_destroy(grpc_credentials *creds) { (grpc_oauth2_token_fetcher_credentials *)creds; grpc_credentials_md_store_unref(c->access_token_md); gpr_mu_destroy(&c->mu); + grpc_httpcli_context_destroy(&c->httpcli_context); gpr_free(c); } @@ -481,8 +486,8 @@ static int oauth2_token_fetcher_has_request_metadata_only( grpc_credentials_status grpc_oauth2_token_fetcher_credentials_parse_server_response( - const grpc_httpcli_response *response, - grpc_credentials_md_store **token_md, gpr_timespec *token_lifetime) { + const grpc_httpcli_response *response, grpc_credentials_md_store **token_md, + gpr_timespec *token_lifetime) { char *null_terminated_body = NULL; char *new_access_token = NULL; grpc_credentials_status status = GRPC_CREDENTIALS_OK; @@ -593,7 +598,7 @@ static void on_oauth2_token_fetcher_http_response( } static void oauth2_token_fetcher_get_request_metadata( - grpc_credentials *creds, const char *service_url, + grpc_credentials *creds, grpc_pollset *pollset, const char *service_url, grpc_credentials_metadata_cb cb, void *user_data) { grpc_oauth2_token_fetcher_credentials *c = (grpc_oauth2_token_fetcher_credentials *)creds; @@ -605,7 +610,8 @@ static void oauth2_token_fetcher_get_request_metadata( if (c->access_token_md != NULL && (gpr_time_cmp(gpr_time_sub(c->token_expiration, gpr_now()), refresh_threshold) > 0)) { - cached_access_token_md = grpc_credentials_md_store_ref(c->access_token_md); + cached_access_token_md = + grpc_credentials_md_store_ref(c->access_token_md); } gpr_mu_unlock(&c->mu); } @@ -616,7 +622,7 @@ static void oauth2_token_fetcher_get_request_metadata( } else { c->fetch_func( grpc_credentials_metadata_request_create(creds, cb, user_data), - on_oauth2_token_fetcher_http_response, + &c->httpcli_context, pollset, on_oauth2_token_fetcher_http_response, gpr_time_add(gpr_now(), refresh_threshold)); } } @@ -629,6 +635,7 @@ static void init_oauth2_token_fetcher(grpc_oauth2_token_fetcher_credentials *c, gpr_mu_init(&c->mu); c->token_expiration = gpr_inf_past; c->fetch_func = fetch_func; + grpc_pollset_set_init(&c->pollset_set); } /* -- ComputeEngine credentials. -- */ @@ -640,6 +647,7 @@ static grpc_credentials_vtable compute_engine_vtable = { static void compute_engine_fetch_oauth2( grpc_credentials_metadata_request *metadata_req, + grpc_httpcli_context *httpcli_context, grpc_pollset *pollset, grpc_httpcli_response_cb response_cb, gpr_timespec deadline) { grpc_httpcli_header header = {"Metadata-Flavor", "Google"}; grpc_httpcli_request request; @@ -648,7 +656,8 @@ static void compute_engine_fetch_oauth2( request.path = GRPC_COMPUTE_ENGINE_METADATA_TOKEN_PATH; request.hdr_count = 1; request.hdrs = &header; - grpc_httpcli_get(&request, deadline, response_cb, metadata_req); + grpc_httpcli_get(httpcli_context, pollset, &request, deadline, response_cb, + metadata_req); } grpc_credentials *grpc_compute_engine_credentials_create(void) { @@ -683,6 +692,7 @@ static grpc_credentials_vtable service_account_vtable = { static void service_account_fetch_oauth2( grpc_credentials_metadata_request *metadata_req, + grpc_httpcli_context *httpcli_context, grpc_pollset *pollset, grpc_httpcli_response_cb response_cb, gpr_timespec deadline) { grpc_service_account_credentials *c = (grpc_service_account_credentials *)metadata_req->creds; @@ -708,8 +718,8 @@ static void service_account_fetch_oauth2( request.hdr_count = 1; request.hdrs = &header; request.use_ssl = 1; - grpc_httpcli_post(&request, body, strlen(body), deadline, response_cb, - metadata_req); + grpc_httpcli_post(httpcli_context, pollset, &request, body, strlen(body), + deadline, response_cb, metadata_req); gpr_free(body); gpr_free(jwt); } @@ -743,8 +753,7 @@ typedef struct { } grpc_refresh_token_credentials; static void refresh_token_destroy(grpc_credentials *creds) { - grpc_refresh_token_credentials *c = - (grpc_refresh_token_credentials *)creds; + grpc_refresh_token_credentials *c = (grpc_refresh_token_credentials *)creds; grpc_auth_refresh_token_destruct(&c->refresh_token); oauth2_token_fetcher_destroy(&c->base.base); } @@ -756,6 +765,7 @@ static grpc_credentials_vtable refresh_token_vtable = { static void refresh_token_fetch_oauth2( grpc_credentials_metadata_request *metadata_req, + grpc_httpcli_context *httpcli_context, grpc_pollset *pollset, grpc_httpcli_response_cb response_cb, gpr_timespec deadline) { grpc_refresh_token_credentials *c = (grpc_refresh_token_credentials *)metadata_req->creds; @@ -772,8 +782,8 @@ static void refresh_token_fetch_oauth2( request.hdr_count = 1; request.hdrs = &header; request.use_ssl = 1; - grpc_httpcli_post(&request, body, strlen(body), deadline, response_cb, - metadata_req); + grpc_httpcli_post(httpcli_context, pollset, &request, body, strlen(body), + deadline, response_cb, metadata_req); gpr_free(body); } @@ -784,8 +794,7 @@ grpc_credentials *grpc_refresh_token_credentials_create( grpc_auth_refresh_token_create_from_string(json_refresh_token); if (!grpc_auth_refresh_token_is_valid(&refresh_token)) { - gpr_log(GPR_ERROR, - "Invalid input for refresh token credentials creation"); + gpr_log(GPR_ERROR, "Invalid input for refresh token credentials creation"); return NULL; } c = gpr_malloc(sizeof(grpc_refresh_token_credentials)); @@ -830,6 +839,7 @@ void on_simulated_token_fetch_done(void *user_data, int success) { } static void fake_oauth2_get_request_metadata(grpc_credentials *creds, + grpc_pollset *pollset, const char *service_url, grpc_credentials_metadata_cb cb, void *user_data) { @@ -888,8 +898,7 @@ static int fake_transport_security_has_request_metadata_only( return 0; } -static grpc_security_status -fake_transport_security_create_security_connector( +static grpc_security_status fake_transport_security_create_security_connector( grpc_credentials *c, const char *target, const grpc_channel_args *args, grpc_credentials *request_metadata_creds, grpc_channel_security_connector **sc, grpc_channel_args **new_args) { @@ -947,6 +956,7 @@ typedef struct { grpc_credentials_md_store *md_elems; char *service_url; void *user_data; + grpc_pollset *pollset; grpc_credentials_metadata_cb cb; } grpc_composite_credentials_metadata_context; @@ -1015,7 +1025,8 @@ static void composite_metadata_cb(void *user_data, grpc_credentials *inner_creds = ctx->composite_creds->inner.creds_array[ctx->creds_index++]; if (grpc_credentials_has_request_metadata(inner_creds)) { - grpc_credentials_get_request_metadata(inner_creds, ctx->service_url, + grpc_credentials_get_request_metadata(inner_creds, ctx->pollset, + ctx->service_url, composite_metadata_cb, ctx); return; } @@ -1028,6 +1039,7 @@ static void composite_metadata_cb(void *user_data, } static void composite_get_request_metadata(grpc_credentials *creds, + grpc_pollset *pollset, const char *service_url, grpc_credentials_metadata_cb cb, void *user_data) { @@ -1043,11 +1055,12 @@ static void composite_get_request_metadata(grpc_credentials *creds, ctx->user_data = user_data; ctx->cb = cb; ctx->composite_creds = c; + ctx->pollset = pollset; ctx->md_elems = grpc_credentials_md_store_create(c->inner.num_creds); while (ctx->creds_index < c->inner.num_creds) { grpc_credentials *inner_creds = c->inner.creds_array[ctx->creds_index++]; if (grpc_credentials_has_request_metadata(inner_creds)) { - grpc_credentials_get_request_metadata(inner_creds, service_url, + grpc_credentials_get_request_metadata(inner_creds, pollset, service_url, composite_metadata_cb, ctx); return; } @@ -1178,15 +1191,14 @@ static void iam_destroy(grpc_credentials *creds) { gpr_free(c); } -static int iam_has_request_metadata(const grpc_credentials *creds) { - return 1; -} +static int iam_has_request_metadata(const grpc_credentials *creds) { return 1; } static int iam_has_request_metadata_only(const grpc_credentials *creds) { return 1; } static void iam_get_request_metadata(grpc_credentials *creds, + grpc_pollset *pollset, const char *service_url, grpc_credentials_metadata_cb cb, void *user_data) { diff --git a/src/core/security/credentials.h b/src/core/security/credentials.h index 4768ce6990..75af73a0c6 100644 --- a/src/core/security/credentials.h +++ b/src/core/security/credentials.h @@ -108,7 +108,6 @@ grpc_credentials_md_store *grpc_credentials_md_store_ref( grpc_credentials_md_store *store); void grpc_credentials_md_store_unref(grpc_credentials_md_store *store); - /* --- grpc_credentials. --- */ /* It is the caller's responsibility to gpr_free the result if not NULL. */ @@ -123,7 +122,7 @@ typedef struct { void (*destroy)(grpc_credentials *c); int (*has_request_metadata)(const grpc_credentials *c); int (*has_request_metadata_only)(const grpc_credentials *c); - void (*get_request_metadata)(grpc_credentials *c, + void (*get_request_metadata)(grpc_credentials *c, grpc_pollset *pollset, const char *service_url, grpc_credentials_metadata_cb cb, void *user_data); @@ -131,7 +130,6 @@ typedef struct { grpc_credentials *c, const char *target, const grpc_channel_args *args, grpc_credentials *request_metadata_creds, grpc_channel_security_connector **sc, grpc_channel_args **new_args); - } grpc_credentials_vtable; struct grpc_credentials { @@ -145,6 +143,7 @@ void grpc_credentials_unref(grpc_credentials *creds); int grpc_credentials_has_request_metadata(grpc_credentials *creds); int grpc_credentials_has_request_metadata_only(grpc_credentials *creds); void grpc_credentials_get_request_metadata(grpc_credentials *creds, + grpc_pollset *pollset, const char *service_url, grpc_credentials_metadata_cb cb, void *user_data); @@ -177,8 +176,8 @@ grpc_credentials *grpc_credentials_contains_type( /* Exposed for testing only. */ grpc_credentials_status grpc_oauth2_token_fetcher_credentials_parse_server_response( - const struct grpc_httpcli_response *response, grpc_credentials_md_store **token_md, - gpr_timespec *token_lifetime); + const struct grpc_httpcli_response *response, + grpc_credentials_md_store **token_md, gpr_timespec *token_lifetime); /* Simulates an oauth2 token fetch with the specified value for testing. */ grpc_credentials *grpc_fake_oauth2_credentials_create( @@ -200,4 +199,4 @@ struct grpc_server_credentials { grpc_security_status grpc_server_credentials_create_security_connector( grpc_server_credentials *creds, grpc_security_connector **sc); -#endif /* GRPC_INTERNAL_CORE_SECURITY_CREDENTIALS_H */ +#endif /* GRPC_INTERNAL_CORE_SECURITY_CREDENTIALS_H */ diff --git a/src/core/security/google_default_credentials.c b/src/core/security/google_default_credentials.c index 0e4b9fc9d3..5822ce6337 100644 --- a/src/core/security/google_default_credentials.c +++ b/src/core/security/google_default_credentials.c @@ -55,13 +55,10 @@ static int compute_engine_detection_done = 0; static gpr_mu g_mu; static gpr_once g_once = GPR_ONCE_INIT; -static void init_default_credentials(void) { - gpr_mu_init(&g_mu); -} +static void init_default_credentials(void) { gpr_mu_init(&g_mu); } typedef struct { - gpr_cv cv; - gpr_mu mu; + grpc_pollset pollset; int is_done; int success; } compute_engine_detector; @@ -82,22 +79,22 @@ static void on_compute_engine_detection_http_response( } } } - gpr_mu_lock(&detector->mu); + gpr_mu_lock(GRPC_POLLSET_MU(&detector->pollset)); detector->is_done = 1; - gpr_mu_unlock(&detector->mu); - gpr_cv_signal(&detector->cv); + grpc_pollset_kick(&detector->pollset); + gpr_mu_unlock(GRPC_POLLSET_MU(&detector->pollset)); } static int is_stack_running_on_compute_engine(void) { compute_engine_detector detector; grpc_httpcli_request request; + grpc_httpcli_context context; /* The http call is local. If it takes more than one sec, it is for sure not on compute engine. */ gpr_timespec max_detection_delay = {1, 0}; - gpr_mu_init(&detector.mu); - gpr_cv_init(&detector.cv); + grpc_pollset_init(&detector.pollset); detector.is_done = 0; detector.success = 0; @@ -105,19 +102,23 @@ static int is_stack_running_on_compute_engine(void) { request.host = GRPC_COMPUTE_ENGINE_DETECTION_HOST; request.path = "/"; - grpc_httpcli_get(&request, gpr_time_add(gpr_now(), max_detection_delay), + grpc_httpcli_context_init(&context); + + grpc_httpcli_get(&context, &detector.pollset, &request, + gpr_time_add(gpr_now(), max_detection_delay), on_compute_engine_detection_http_response, &detector); /* Block until we get the response. This is not ideal but this should only be called once for the lifetime of the process by the default credentials. */ - gpr_mu_lock(&detector.mu); + gpr_mu_lock(GRPC_POLLSET_MU(&detector.pollset)); while (!detector.is_done) { - gpr_cv_wait(&detector.cv, &detector.mu, gpr_inf_future); + grpc_pollset_work(&detector.pollset, gpr_inf_future); } - gpr_mu_unlock(&detector.mu); + gpr_mu_unlock(GRPC_POLLSET_MU(&detector.pollset)); + + grpc_httpcli_context_destroy(&context); + grpc_pollset_destroy(&detector.pollset); - gpr_mu_destroy(&detector.mu); - gpr_cv_destroy(&detector.cv); return detector.success; } diff --git a/src/core/security/server_secure_chttp2.c b/src/core/security/server_secure_chttp2.c index 3519930f38..b312bdd0b6 100644 --- a/src/core/security/server_secure_chttp2.c +++ b/src/core/security/server_secure_chttp2.c @@ -66,6 +66,10 @@ static void state_ref(grpc_server_secure_state *state) { static void state_unref(grpc_server_secure_state *state) { if (gpr_unref(&state->refcount)) { + /* ensure all threads have unlocked */ + gpr_mu_lock(&state->mu); + gpr_mu_unlock(&state->mu); + /* clean up */ grpc_security_connector_unref(state->sc); gpr_free(state); } @@ -124,16 +128,20 @@ static void start(grpc_server *server, void *statep, grpc_pollset **pollsets, grpc_tcp_server_start(state->tcp, pollsets, pollset_count, on_accept, state); } +static void destroy_done(void *statep) { + grpc_server_secure_state *state = statep; + grpc_server_listener_destroy_done(state->server); + state_unref(state); +} + /* Server callback: destroy the tcp listener (so we don't generate further callbacks) */ static void destroy(grpc_server *server, void *statep) { grpc_server_secure_state *state = statep; gpr_mu_lock(&state->mu); state->is_shutdown = 1; - grpc_tcp_server_destroy(state->tcp, grpc_server_listener_destroy_done, - server); + grpc_tcp_server_destroy(state->tcp, destroy_done, state); gpr_mu_unlock(&state->mu); - state_unref(state); } int grpc_server_add_secure_http2_port(grpc_server *server, const char *addr, diff --git a/src/core/support/log_win32.c b/src/core/support/log_win32.c index f878e6aaa1..d249be7d2e 100644 --- a/src/core/support/log_win32.c +++ b/src/core/support/log_win32.c @@ -94,23 +94,22 @@ void gpr_default_log(gpr_log_func_args *args) { fprintf(stderr, "%s%s.%09u %5lu %s:%d] %s\n", gpr_log_severity_string(args->severity), time_buffer, - (int)(now.tv_nsec), GetCurrentThreadId(), - args->file, args->line, args->message); + (int)(now.tv_nsec), GetCurrentThreadId(), args->file, args->line, + args->message); } char *gpr_format_message(DWORD messageid) { LPTSTR tmessage; char *message; - DWORD status = FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | - FORMAT_MESSAGE_FROM_SYSTEM | - FORMAT_MESSAGE_IGNORE_INSERTS, - NULL, messageid, - MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), - (LPTSTR)(&tmessage), 0, NULL); + DWORD status = FormatMessage( + FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | + FORMAT_MESSAGE_IGNORE_INSERTS, + NULL, messageid, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), + (LPTSTR)(&tmessage), 0, NULL); if (status == 0) return gpr_strdup("Unable to retrieve error string"); message = gpr_tchar_to_char(tmessage); LocalFree(tmessage); return message; } -#endif /* GPR_WIN32 */ +#endif /* GPR_WIN32 */ diff --git a/src/core/support/slice_buffer.c b/src/core/support/slice_buffer.c index 91b5d8c98b..f54aca8cfe 100644 --- a/src/core/support/slice_buffer.c +++ b/src/core/support/slice_buffer.c @@ -190,3 +190,19 @@ void gpr_slice_buffer_swap(gpr_slice_buffer *a, gpr_slice_buffer *b) { GPR_SWAP(gpr_slice *, a->slices, b->slices); } } + +void gpr_slice_buffer_move_into(gpr_slice_buffer *src, gpr_slice_buffer *dst) { + /* anything to move? */ + if (src->count == 0) { + return; + } + /* anything in dst? */ + if (dst->count == 0) { + gpr_slice_buffer_swap(src, dst); + return; + } + /* both buffers have data - copy, and reset src */ + gpr_slice_buffer_addn(dst, src->slices, src->count); + src->count = 0; + src->length = 0; +} diff --git a/src/core/surface/byte_buffer_reader.c b/src/core/surface/byte_buffer_reader.c index 86829a686f..283db83833 100644 --- a/src/core/surface/byte_buffer_reader.c +++ b/src/core/surface/byte_buffer_reader.c @@ -64,11 +64,11 @@ void grpc_byte_buffer_reader_init(grpc_byte_buffer_reader *reader, grpc_msg_decompress(reader->buffer_in->data.raw.compression, &reader->buffer_in->data.raw.slice_buffer, &decompressed_slices_buffer); - reader->buffer_out = grpc_raw_byte_buffer_create( - decompressed_slices_buffer.slices, - decompressed_slices_buffer.count); + reader->buffer_out = + grpc_raw_byte_buffer_create(decompressed_slices_buffer.slices, + decompressed_slices_buffer.count); gpr_slice_buffer_destroy(&decompressed_slices_buffer); - } else { /* not compressed, use the input buffer as output */ + } else { /* not compressed, use the input buffer as output */ reader->buffer_out = reader->buffer_in; } reader->current.index = 0; diff --git a/src/core/surface/call.c b/src/core/surface/call.c index 5cdd7cd0f6..784468abf9 100644 --- a/src/core/surface/call.c +++ b/src/core/surface/call.c @@ -99,6 +99,8 @@ typedef enum { /* Status came from 'the wire' - or somewhere below the surface layer */ STATUS_FROM_WIRE, + /* Status came from the server sending status */ + STATUS_FROM_SERVER_STATUS, STATUS_SOURCE_COUNT } status_source; @@ -148,13 +150,19 @@ struct grpc_call { gpr_uint8 receiving; /* are we currently completing requests */ gpr_uint8 completing; + /** has grpc_call_destroy been called */ + gpr_uint8 destroy_called; /* pairs with completed_requests */ gpr_uint8 num_completed_requests; /* are we currently reading a message? */ gpr_uint8 reading_message; + /* have we bound a pollset yet? */ + gpr_uint8 bound_pollset; /* flags with bits corresponding to write states allowing us to determine what was sent */ gpr_uint16 last_send_contains; + /* cancel with this status on the next outgoing transport op */ + grpc_status_code cancel_with_status; /* Active ioreqs. request_set and request_data contain one element per active ioreq @@ -231,6 +239,9 @@ struct grpc_call { gpr_uint32 incoming_message_length; gpr_uint32 incoming_message_flags; grpc_iomgr_closure destroy_closure; + grpc_iomgr_closure on_done_recv; + grpc_iomgr_closure on_done_send; + grpc_iomgr_closure on_done_bind; }; #define CALL_STACK_FROM_CALL(call) ((grpc_call_stack *)((call) + 1)) @@ -248,8 +259,11 @@ static void execute_op(grpc_call *call, grpc_transport_op *op); static void recv_metadata(grpc_call *call, grpc_metadata_batch *metadata); static void finish_read_ops(grpc_call *call); static grpc_call_error cancel_with_status(grpc_call *c, grpc_status_code status, - const char *description, - gpr_uint8 locked); + const char *description); +static void finished_loose_op(void *call, int success); + +static void lock(grpc_call *call); +static void unlock(grpc_call *call); grpc_call *grpc_call_create(grpc_channel *channel, grpc_completion_queue *cq, const void *server_transport_data, @@ -266,6 +280,9 @@ grpc_call *grpc_call_create(grpc_channel *channel, grpc_completion_queue *cq, gpr_mu_init(&call->mu); call->channel = channel; call->cq = cq; + if (cq) { + GRPC_CQ_INTERNAL_REF(cq, "bind"); + } call->is_client = server_transport_data == NULL; for (i = 0; i < GRPC_IOREQ_OP_COUNT; i++) { call->request_set[i] = REQSET_EMPTY; @@ -282,21 +299,23 @@ grpc_call *grpc_call_create(grpc_channel *channel, grpc_completion_queue *cq, } call->send_initial_metadata_count = add_initial_metadata_count; call->send_deadline = send_deadline; - grpc_channel_internal_ref(channel); + GRPC_CHANNEL_INTERNAL_REF(channel, "call"); call->metadata_context = grpc_channel_get_metadata_context(channel); grpc_sopb_init(&call->send_ops); grpc_sopb_init(&call->recv_ops); gpr_slice_buffer_init(&call->incoming_message); - /* dropped in destroy */ - gpr_ref_init(&call->internal_refcount, 1); + grpc_iomgr_closure_init(&call->on_done_recv, call_on_done_recv, call); + grpc_iomgr_closure_init(&call->on_done_send, call_on_done_send, call); + grpc_iomgr_closure_init(&call->on_done_bind, finished_loose_op, call); + /* dropped in destroy and when READ_STATE_STREAM_CLOSED received */ + gpr_ref_init(&call->internal_refcount, 2); /* server hack: start reads immediately so we can get initial metadata. TODO(ctiller): figure out a cleaner solution */ if (!call->is_client) { memset(&initial_op, 0, sizeof(initial_op)); initial_op.recv_ops = &call->recv_ops; initial_op.recv_state = &call->recv_state; - initial_op.on_done_recv = call_on_done_recv; - initial_op.recv_user_data = call; + initial_op.on_done_recv = &call->on_done_recv; initial_op.context = call->context; call->receiving = 1; GRPC_CALL_INTERNAL_REF(call, "receiving"); @@ -312,7 +331,12 @@ grpc_call *grpc_call_create(grpc_channel *channel, grpc_completion_queue *cq, void grpc_call_set_completion_queue(grpc_call *call, grpc_completion_queue *cq) { + lock(call); call->cq = cq; + if (cq) { + GRPC_CQ_INTERNAL_REF(cq, "bind"); + } + unlock(call); } grpc_completion_queue *grpc_call_get_completion_queue(grpc_call *call) { @@ -333,7 +357,7 @@ static void destroy_call(void *call, int ignored_success) { size_t i; grpc_call *c = call; grpc_call_stack_destroy(CALL_STACK_FROM_CALL(c)); - grpc_channel_internal_unref(c->channel); + GRPC_CHANNEL_INTERNAL_UNREF(c->channel, "call"); gpr_mu_destroy(&c->mu); for (i = 0; i < STATUS_SOURCE_COUNT; i++) { if (c->status[i].details) { @@ -359,6 +383,9 @@ static void destroy_call(void *call, int ignored_success) { grpc_sopb_destroy(&c->recv_ops); grpc_bbq_destroy(&c->incoming_queue); gpr_slice_buffer_destroy(&c->incoming_message); + if (c->cq) { + GRPC_CQ_INTERNAL_UNREF(c->cq, "bind"); + } gpr_free(c); } @@ -411,6 +438,7 @@ static void lock(grpc_call *call) { gpr_mu_lock(&call->mu); } static int need_more_data(grpc_call *call) { if (call->read_state == READ_STATE_STREAM_CLOSED) return 0; + /* TODO(ctiller): this needs some serious cleanup */ return is_op_live(call, GRPC_IOREQ_RECV_INITIAL_METADATA) || (is_op_live(call, GRPC_IOREQ_RECV_MESSAGE) && grpc_bbq_empty(&call->incoming_queue)) || @@ -419,7 +447,9 @@ static int need_more_data(grpc_call *call) { is_op_live(call, GRPC_IOREQ_RECV_STATUS_DETAILS) || (is_op_live(call, GRPC_IOREQ_RECV_CLOSE) && grpc_bbq_empty(&call->incoming_queue)) || - (call->write_state == WRITE_STATE_INITIAL && !call->is_client); + (call->write_state == WRITE_STATE_INITIAL && !call->is_client) || + (call->cancel_with_status != GRPC_STATUS_OK) || + call->destroy_called; } static void unlock(grpc_call *call) { @@ -431,11 +461,14 @@ static void unlock(grpc_call *call) { memset(&op, 0, sizeof(op)); + op.cancel_with_status = call->cancel_with_status; + start_op = op.cancel_with_status != GRPC_STATUS_OK; + call->cancel_with_status = GRPC_STATUS_OK; /* reset */ + if (!call->receiving && need_more_data(call)) { op.recv_ops = &call->recv_ops; op.recv_state = &call->recv_state; - op.on_done_recv = call_on_done_recv; - op.recv_user_data = call; + op.on_done_recv = &call->on_done_recv; call->receiving = 1; GRPC_CALL_INTERNAL_REF(call, "receiving"); start_op = 1; @@ -449,6 +482,12 @@ static void unlock(grpc_call *call) { } } + if (!call->bound_pollset && call->cq && (!call->is_client || start_op)) { + call->bound_pollset = 1; + op.bind_pollset = grpc_cq_pollset(call->cq); + start_op = 1; + } + if (!call->completing && call->num_completed_requests != 0) { completing_requests = call->num_completed_requests; memcpy(completed_requests, call->completed_requests, @@ -551,10 +590,18 @@ static void finish_live_ioreq_op(grpc_call *call, grpc_ioreq_op op, call->write_state = WRITE_STATE_WRITE_CLOSED; } break; + case GRPC_IOREQ_SEND_STATUS: + if (call->request_data[GRPC_IOREQ_SEND_STATUS].send_status.details != + NULL) { + grpc_mdstr_unref( + call->request_data[GRPC_IOREQ_SEND_STATUS].send_status.details); + call->request_data[GRPC_IOREQ_SEND_STATUS].send_status.details = + NULL; + } + break; case GRPC_IOREQ_RECV_CLOSE: case GRPC_IOREQ_SEND_INITIAL_METADATA: case GRPC_IOREQ_SEND_TRAILING_METADATA: - case GRPC_IOREQ_SEND_STATUS: case GRPC_IOREQ_SEND_CLOSE: break; case GRPC_IOREQ_RECV_STATUS: @@ -655,7 +702,7 @@ static int begin_message(grpc_call *call, grpc_begin_message msg) { gpr_asprintf( &message, "Message terminated early; read %d bytes, expected %d", (int)call->incoming_message.length, (int)call->incoming_message_length); - cancel_with_status(call, GRPC_STATUS_INVALID_ARGUMENT, message, 1); + cancel_with_status(call, GRPC_STATUS_INVALID_ARGUMENT, message); gpr_free(message); return 0; } @@ -666,7 +713,7 @@ static int begin_message(grpc_call *call, grpc_begin_message msg) { &message, "Maximum message length of %d exceeded by a message of length %d", grpc_channel_get_max_message_length(call->channel), msg.length); - cancel_with_status(call, GRPC_STATUS_INVALID_ARGUMENT, message, 1); + cancel_with_status(call, GRPC_STATUS_INVALID_ARGUMENT, message); gpr_free(message); return 0; } else if (msg.length > 0) { @@ -688,7 +735,7 @@ static int add_slice_to_message(grpc_call *call, gpr_slice slice) { /* we have to be reading a message to know what to do here */ if (!call->reading_message) { cancel_with_status(call, GRPC_STATUS_INVALID_ARGUMENT, - "Received payload data while not reading a message", 1); + "Received payload data while not reading a message"); return 0; } /* append the slice to the incoming buffer */ @@ -699,7 +746,7 @@ static int add_slice_to_message(grpc_call *call, gpr_slice slice) { gpr_asprintf( &message, "Receiving message overflow; read %d bytes, expected %d", (int)call->incoming_message.length, (int)call->incoming_message_length); - cancel_with_status(call, GRPC_STATUS_INVALID_ARGUMENT, message, 1); + cancel_with_status(call, GRPC_STATUS_INVALID_ARGUMENT, message); gpr_free(message); return 0; } else if (call->incoming_message.length == call->incoming_message_length) { @@ -748,6 +795,7 @@ static void call_on_done_recv(void *pc, int success) { grpc_alarm_cancel(&call->alarm); call->have_alarm = 0; } + GRPC_CALL_INTERNAL_UNREF(call, "closed", 0); } finish_read_ops(call); } else { @@ -841,7 +889,6 @@ static int fill_send_ops(grpc_call *call, grpc_transport_op *op) { } grpc_sopb_add_metadata(&call->send_ops, mdb); op->send_ops = &call->send_ops; - op->bind_pollset = grpc_cq_pollset(call->cq); call->last_send_contains |= 1 << GRPC_IOREQ_SEND_INITIAL_METADATA; call->send_initial_metadata_count = 0; /* fall through intended */ @@ -880,8 +927,9 @@ static int fill_send_ops(grpc_call *call, grpc_transport_op *op) { call->metadata_context, grpc_mdstr_ref( grpc_channel_get_message_string(call->channel)), - grpc_mdstr_from_string(call->metadata_context, - data.send_status.details))); + data.send_status.details)); + call->request_data[GRPC_IOREQ_SEND_STATUS].send_status.details = + NULL; } grpc_sopb_add_metadata(&call->send_ops, mdb); } @@ -891,8 +939,7 @@ static int fill_send_ops(grpc_call *call, grpc_transport_op *op) { break; } if (op->send_ops) { - op->on_done_send = call_on_done_send; - op->send_user_data = call; + op->on_done_send = &call->on_done_send; } return op->send_ops != NULL; } @@ -981,6 +1028,14 @@ static grpc_call_error start_ioreq(grpc_call *call, const grpc_ioreq *reqs, GRPC_CALL_ERROR_INVALID_METADATA); } } + if (op == GRPC_IOREQ_SEND_STATUS) { + set_status_code(call, STATUS_FROM_SERVER_STATUS, + reqs[i].data.send_status.code); + if (reqs[i].data.send_status.details) { + set_status_details(call, STATUS_FROM_SERVER_STATUS, + grpc_mdstr_ref(reqs[i].data.send_status.details)); + } + } have_ops |= 1u << op; call->request_data[op] = data; @@ -1014,6 +1069,8 @@ grpc_call_error grpc_call_start_ioreq_and_call_back( void grpc_call_destroy(grpc_call *c) { int cancel; lock(c); + GPR_ASSERT(!c->destroy_called); + c->destroy_called = 1; if (c->have_alarm) { grpc_alarm_cancel(&c->alarm); c->have_alarm = 0; @@ -1031,35 +1088,60 @@ grpc_call_error grpc_call_cancel(grpc_call *call) { grpc_call_error grpc_call_cancel_with_status(grpc_call *c, grpc_status_code status, const char *description) { - return cancel_with_status(c, status, description, 0); + grpc_call_error r; + lock(c); + r = cancel_with_status(c, status, description); + unlock(c); + return r; } static grpc_call_error cancel_with_status(grpc_call *c, grpc_status_code status, - const char *description, - gpr_uint8 locked) { - grpc_transport_op op; + const char *description) { grpc_mdstr *details = description ? grpc_mdstr_from_string(c->metadata_context, description) : NULL; - memset(&op, 0, sizeof(op)); - op.cancel_with_status = status; - if (locked == 0) { - lock(c); - } + GPR_ASSERT(status != GRPC_STATUS_OK); + set_status_code(c, STATUS_FROM_API_OVERRIDE, status); set_status_details(c, STATUS_FROM_API_OVERRIDE, details); - if (locked == 0) { - unlock(c); - } - execute_op(c, &op); + c->cancel_with_status = status; return GRPC_CALL_OK; } +static void finished_loose_op(void *call, int success_ignored) { + GRPC_CALL_INTERNAL_UNREF(call, "loose-op", 0); +} + +typedef struct { + grpc_call *call; + grpc_iomgr_closure closure; +} finished_loose_op_allocated_args; + +static void finished_loose_op_allocated(void *alloc, int success) { + finished_loose_op_allocated_args *args = alloc; + finished_loose_op(args->call, success); + gpr_free(args); +} + static void execute_op(grpc_call *call, grpc_transport_op *op) { grpc_call_element *elem; + + GPR_ASSERT(op->on_consumed == NULL); + if (op->cancel_with_status != GRPC_STATUS_OK || op->bind_pollset) { + GRPC_CALL_INTERNAL_REF(call, "loose-op"); + if (op->bind_pollset) { + op->on_consumed = &call->on_done_bind; + } else { + finished_loose_op_allocated_args *args = gpr_malloc(sizeof(*args)); + args->call = call; + grpc_iomgr_closure_init(&args->closure, finished_loose_op_allocated, args); + op->on_consumed = &args->closure; + } + } + elem = CALL_ELEM_FROM_CALL(call, 0); op->context = call->context; elem->filter->start_transport_op(elem, op); @@ -1072,12 +1154,10 @@ grpc_call *grpc_call_from_top_element(grpc_call_element *elem) { static void call_alarm(void *arg, int success) { grpc_call *call = arg; if (success) { - if (call->is_client) { - cancel_with_status(call, GRPC_STATUS_DEADLINE_EXCEEDED, - "Deadline Exceeded", 0); - } else { - grpc_call_cancel(call); - } + lock(call); + cancel_with_status(call, GRPC_STATUS_DEADLINE_EXCEEDED, + "Deadline Exceeded"); + unlock(call); } GRPC_CALL_INTERNAL_UNREF(call, "alarm", 1); } @@ -1235,7 +1315,7 @@ grpc_call_error grpc_call_start_batch(grpc_call *call, const grpc_op *ops, req->flags = op->flags; break; case GRPC_OP_SEND_MESSAGE: - if (!are_write_flags_valid(op->flags)){ + if (!are_write_flags_valid(op->flags)) { return GRPC_CALL_ERROR_INVALID_FLAGS; } req = &reqs[out++]; @@ -1270,7 +1350,11 @@ grpc_call_error grpc_call_start_batch(grpc_call *call, const grpc_op *ops, req->op = GRPC_IOREQ_SEND_STATUS; req->data.send_status.code = op->data.send_status_from_server.status; req->data.send_status.details = - op->data.send_status_from_server.status_details; + op->data.send_status_from_server.status_details != NULL + ? grpc_mdstr_from_string( + call->metadata_context, + op->data.send_status_from_server.status_details) + : NULL; req = &reqs[out++]; req->op = GRPC_IOREQ_SEND_CLOSE; break; diff --git a/src/core/surface/call.h b/src/core/surface/call.h index 7a14161253..fb3662b50d 100644 --- a/src/core/surface/call.h +++ b/src/core/surface/call.h @@ -72,14 +72,14 @@ typedef union { grpc_byte_buffer *send_message; struct { grpc_status_code code; - const char *details; + grpc_mdstr *details; } send_status; } grpc_ioreq_data; typedef struct { grpc_ioreq_op op; grpc_ioreq_data data; - gpr_uint32 flags; /**< A copy of the write flags from grpc_op */ + gpr_uint32 flags; /**< A copy of the write flags from grpc_op */ } grpc_ioreq; typedef void (*grpc_ioreq_completion_func)(grpc_call *call, int success, @@ -96,8 +96,10 @@ grpc_completion_queue *grpc_call_get_completion_queue(grpc_call *call); #ifdef GRPC_CALL_REF_COUNT_DEBUG void grpc_call_internal_ref(grpc_call *call, const char *reason); -void grpc_call_internal_unref(grpc_call *call, const char *reason, int allow_immediate_deletion); -#define GRPC_CALL_INTERNAL_REF(call, reason) grpc_call_internal_ref(call, reason) +void grpc_call_internal_unref(grpc_call *call, const char *reason, + int allow_immediate_deletion); +#define GRPC_CALL_INTERNAL_REF(call, reason) \ + grpc_call_internal_ref(call, reason) #define GRPC_CALL_INTERNAL_UNREF(call, reason, allow_immediate_deletion) \ grpc_call_internal_unref(call, reason, allow_immediate_deletion) #else @@ -125,8 +127,7 @@ void grpc_call_log_batch(char *file, int line, gpr_log_severity severity, void grpc_server_log_request_call(char *file, int line, gpr_log_severity severity, - grpc_server *server, - grpc_call **call, + grpc_server *server, grpc_call **call, grpc_call_details *details, grpc_metadata_array *initial_metadata, grpc_completion_queue *cq_bound_to_call, @@ -135,16 +136,20 @@ void grpc_server_log_request_call(char *file, int line, /* Set a context pointer. No thread safety guarantees are made wrt this value. */ -void grpc_call_context_set(grpc_call *call, grpc_context_index elem, void *value, - void (*destroy)(void *value)); +void grpc_call_context_set(grpc_call *call, grpc_context_index elem, + void *value, void (*destroy)(void *value)); /* Get a context pointer. */ void *grpc_call_context_get(grpc_call *call, grpc_context_index elem); #define GRPC_CALL_LOG_BATCH(sev, call, ops, nops, tag) \ if (grpc_trace_batch) grpc_call_log_batch(sev, call, ops, nops, tag) -#define GRPC_SERVER_LOG_REQUEST_CALL(sev, server, call, details, initial_metadata, cq_bound_to_call, cq_for_notifications, tag) \ - if (grpc_trace_batch) grpc_server_log_request_call(sev, server, call, details, initial_metadata, cq_bound_to_call, cq_for_notifications, tag) +#define GRPC_SERVER_LOG_REQUEST_CALL(sev, server, call, details, \ + initial_metadata, cq_bound_to_call, \ + cq_for_notifications, tag) \ + if (grpc_trace_batch) \ + grpc_server_log_request_call(sev, server, call, details, initial_metadata, \ + cq_bound_to_call, cq_for_notifications, tag) gpr_uint8 grpc_call_is_client(grpc_call *call); diff --git a/src/core/surface/channel.c b/src/core/surface/channel.c index 9175ad0572..9ecdd374a9 100644 --- a/src/core/surface/channel.c +++ b/src/core/surface/channel.c @@ -187,8 +187,14 @@ grpc_call *grpc_channel_create_registered_call( grpc_mdelem_ref(rc->authority), deadline); } -void grpc_channel_internal_ref(grpc_channel *channel) { - gpr_ref(&channel->refs); +#ifdef GRPC_CHANNEL_REF_COUNT_DEBUG +void grpc_channel_internal_ref(grpc_channel *c, const char *reason) { + gpr_log(GPR_DEBUG, "CHANNEL: ref %p %d -> %d [%s]", c, c->refs.count, + c->refs.count + 1, reason); +#else +void grpc_channel_internal_ref(grpc_channel *c) { +#endif + gpr_ref(&c->refs); } static void destroy_channel(void *p, int ok) { @@ -214,7 +220,13 @@ static void destroy_channel(void *p, int ok) { gpr_free(channel); } +#ifdef GRPC_CHANNEL_REF_COUNT_DEBUG +void grpc_channel_internal_unref(grpc_channel *channel, const char *reason) { + gpr_log(GPR_DEBUG, "CHANNEL: unref %p %d -> %d [%s]", channel, + channel->refs.count, channel->refs.count - 1, reason); +#else void grpc_channel_internal_unref(grpc_channel *channel) { +#endif if (gpr_unref(&channel->refs)) { channel->destroy_closure.cb = destroy_channel; channel->destroy_closure.cb_arg = channel; @@ -238,11 +250,11 @@ void grpc_channel_destroy(grpc_channel *channel) { op.dir = GRPC_CALL_DOWN; elem->filter->channel_op(elem, NULL, &op); - grpc_channel_internal_unref(channel); + GRPC_CHANNEL_INTERNAL_UNREF(channel, "channel"); } void grpc_client_channel_closed(grpc_channel_element *elem) { - grpc_channel_internal_unref(CHANNEL_FROM_TOP_ELEM(elem)); + GRPC_CHANNEL_INTERNAL_UNREF(CHANNEL_FROM_TOP_ELEM(elem), "closed"); } grpc_channel_stack *grpc_channel_get_channel_stack(grpc_channel *channel) { diff --git a/src/core/surface/channel.h b/src/core/surface/channel.h index 6d1ed87900..ba3c0abac9 100644 --- a/src/core/surface/channel.h +++ b/src/core/surface/channel.h @@ -58,7 +58,20 @@ gpr_uint32 grpc_channel_get_max_message_length(grpc_channel *channel); void grpc_client_channel_closed(grpc_channel_element *elem); +#ifdef GRPC_CHANNEL_REF_COUNT_DEBUG +void grpc_channel_internal_ref(grpc_channel *channel, const char *reason); +void grpc_channel_internal_unref(grpc_channel *channel, const char *reason); +#define GRPC_CHANNEL_INTERNAL_REF(channel, reason) \ + grpc_channel_internal_ref(channel, reason) +#define GRPC_CHANNEL_INTERNAL_UNREF(channel, reason) \ + grpc_channel_internal_unref(channel, reason) +#else void grpc_channel_internal_ref(grpc_channel *channel); void grpc_channel_internal_unref(grpc_channel *channel); +#define GRPC_CHANNEL_INTERNAL_REF(channel, reason) \ + grpc_channel_internal_ref(channel) +#define GRPC_CHANNEL_INTERNAL_UNREF(channel, reason) \ + grpc_channel_internal_unref(channel) +#endif #endif /* GRPC_INTERNAL_CORE_SURFACE_CHANNEL_H */ diff --git a/src/core/surface/channel_create.c b/src/core/surface/channel_create.c index 946ee0949d..d069a04a9a 100644 --- a/src/core/surface/channel_create.c +++ b/src/core/surface/channel_create.c @@ -91,7 +91,7 @@ static void done(request *r, int was_successful) { static void on_connect(void *rp, grpc_endpoint *tcp) { request *r = rp; - if (!grpc_client_setup_request_should_continue(r->cs_request)) { + if (!grpc_client_setup_request_should_continue(r->cs_request, "on_connect")) { if (tcp) { grpc_endpoint_shutdown(tcp); grpc_endpoint_destroy(tcp); @@ -107,12 +107,12 @@ static void on_connect(void *rp, grpc_endpoint *tcp) { } else { return; } - } else if (grpc_client_setup_cb_begin(r->cs_request)) { + } else if (grpc_client_setup_cb_begin(r->cs_request, "on_connect")) { grpc_create_chttp2_transport( r->setup->setup_callback, r->setup->setup_user_data, grpc_client_setup_get_channel_args(r->cs_request), tcp, NULL, 0, grpc_client_setup_get_mdctx(r->cs_request), 1); - grpc_client_setup_cb_end(r->cs_request); + grpc_client_setup_cb_end(r->cs_request, "on_connect"); done(r, 1); return; } else { @@ -126,9 +126,10 @@ static int maybe_try_next_resolved(request *r) { if (!r->resolved) return 0; if (r->resolved_index == r->resolved->naddrs) return 0; addr = &r->resolved->addrs[r->resolved_index++]; - grpc_tcp_client_connect(on_connect, r, (struct sockaddr *)&addr->addr, - addr->len, - grpc_client_setup_request_deadline(r->cs_request)); + grpc_tcp_client_connect( + on_connect, r, grpc_client_setup_get_interested_parties(r->cs_request), + (struct sockaddr *)&addr->addr, addr->len, + grpc_client_setup_request_deadline(r->cs_request)); return 1; } @@ -137,7 +138,8 @@ static void on_resolved(void *rp, grpc_resolved_addresses *resolved) { request *r = rp; /* if we're not still the active request, abort */ - if (!grpc_client_setup_request_should_continue(r->cs_request)) { + if (!grpc_client_setup_request_should_continue(r->cs_request, + "on_resolved")) { if (resolved) { grpc_resolved_addresses_destroy(resolved); } diff --git a/src/core/surface/completion_queue.c b/src/core/surface/completion_queue.c index b48fbace31..bd0fabf9da 100644 --- a/src/core/surface/completion_queue.c +++ b/src/core/surface/completion_queue.c @@ -59,9 +59,6 @@ typedef struct event { /* Completion queue structure */ struct grpc_completion_queue { - /* TODO(ctiller): see if this can be removed */ - int allow_polling; - /* When refs drops to zero, we are in shutdown mode, and will be destroyable once all queued events are drained */ gpr_refcount refs; @@ -76,6 +73,7 @@ struct grpc_completion_queue { event *queue; /* Fixed size chained hash table of events for pluck() */ event *buckets[NUM_TAG_BUCKETS]; + int is_server_cq; }; grpc_completion_queue *grpc_completion_queue_create(void) { @@ -86,20 +84,31 @@ grpc_completion_queue *grpc_completion_queue_create(void) { /* One for destroy(), one for pollset_shutdown */ gpr_ref_init(&cc->owning_refs, 2); grpc_pollset_init(&cc->pollset); - cc->allow_polling = 1; return cc; } +#ifdef GRPC_CQ_REF_COUNT_DEBUG +void grpc_cq_internal_ref(grpc_completion_queue *cc, const char *reason) { + gpr_log(GPR_DEBUG, "CQ:%p ref %d -> %d %s", cc, (int)cc->owning_refs.count, + (int)cc->owning_refs.count + 1, reason); +#else void grpc_cq_internal_ref(grpc_completion_queue *cc) { +#endif gpr_ref(&cc->owning_refs); } static void on_pollset_destroy_done(void *arg) { grpc_completion_queue *cc = arg; - grpc_cq_internal_unref(cc); + GRPC_CQ_INTERNAL_UNREF(cc, "pollset_destroy"); } +#ifdef GRPC_CQ_REF_COUNT_DEBUG +void grpc_cq_internal_unref(grpc_completion_queue *cc, const char *reason) { + gpr_log(GPR_DEBUG, "CQ:%p unref %d -> %d %s", cc, (int)cc->owning_refs.count, + (int)cc->owning_refs.count - 1, reason); +#else void grpc_cq_internal_unref(grpc_completion_queue *cc) { +#endif if (gpr_unref(&cc->owning_refs)) { GPR_ASSERT(cc->queue == NULL); grpc_pollset_destroy(&cc->pollset); @@ -107,10 +116,6 @@ void grpc_cq_internal_unref(grpc_completion_queue *cc) { } } -void grpc_completion_queue_dont_poll_test_only(grpc_completion_queue *cc) { - cc->allow_polling = 0; -} - /* Create and append an event to the queue. Returns the event so that its data members can be filled in. Requires GRPC_POLLSET_MU(&cc->pollset) locked. */ @@ -134,7 +139,6 @@ static event *add_locked(grpc_completion_queue *cc, grpc_completion_type type, ev->bucket_prev = cc->buckets[bucket]->bucket_prev; ev->bucket_next->bucket_prev = ev->bucket_prev->bucket_next = ev; } - gpr_cv_broadcast(GRPC_POLLSET_CV(&cc->pollset)); grpc_pollset_kick(&cc->pollset); return ev; } @@ -157,7 +161,6 @@ void grpc_cq_end_op(grpc_completion_queue *cc, void *tag, grpc_call *call, GPR_ASSERT(!cc->shutdown); GPR_ASSERT(cc->shutdown_called); cc->shutdown = 1; - gpr_cv_broadcast(GRPC_POLLSET_CV(&cc->pollset)); shutdown = 1; } gpr_mu_unlock(GRPC_POLLSET_MU(&cc->pollset)); @@ -180,7 +183,7 @@ grpc_event grpc_completion_queue_next(grpc_completion_queue *cc, event *ev = NULL; grpc_event ret; - grpc_cq_internal_ref(cc); + GRPC_CQ_INTERNAL_REF(cc, "next"); gpr_mu_lock(GRPC_POLLSET_MU(&cc->pollset)); for (;;) { if (cc->queue != NULL) { @@ -207,16 +210,12 @@ grpc_event grpc_completion_queue_next(grpc_completion_queue *cc, ev = create_shutdown_event(); break; } - if (cc->allow_polling && grpc_pollset_work(&cc->pollset, deadline)) { - continue; - } - if (gpr_cv_wait(GRPC_POLLSET_CV(&cc->pollset), - GRPC_POLLSET_MU(&cc->pollset), deadline)) { + if (!grpc_pollset_work(&cc->pollset, deadline)) { gpr_mu_unlock(GRPC_POLLSET_MU(&cc->pollset)); memset(&ret, 0, sizeof(ret)); ret.type = GRPC_QUEUE_TIMEOUT; GRPC_SURFACE_TRACE_RETURNED_EVENT(cc, &ret); - grpc_cq_internal_unref(cc); + GRPC_CQ_INTERNAL_UNREF(cc, "next"); return ret; } } @@ -224,7 +223,7 @@ grpc_event grpc_completion_queue_next(grpc_completion_queue *cc, ret = ev->base; gpr_free(ev); GRPC_SURFACE_TRACE_RETURNED_EVENT(cc, &ret); - grpc_cq_internal_unref(cc); + GRPC_CQ_INTERNAL_UNREF(cc, "next"); return ret; } @@ -262,7 +261,7 @@ grpc_event grpc_completion_queue_pluck(grpc_completion_queue *cc, void *tag, event *ev = NULL; grpc_event ret; - grpc_cq_internal_ref(cc); + GRPC_CQ_INTERNAL_REF(cc, "pluck"); gpr_mu_lock(GRPC_POLLSET_MU(&cc->pollset)); for (;;) { if ((ev = pluck_event(cc, tag))) { @@ -272,16 +271,12 @@ grpc_event grpc_completion_queue_pluck(grpc_completion_queue *cc, void *tag, ev = create_shutdown_event(); break; } - if (cc->allow_polling && grpc_pollset_work(&cc->pollset, deadline)) { - continue; - } - if (gpr_cv_wait(GRPC_POLLSET_CV(&cc->pollset), - GRPC_POLLSET_MU(&cc->pollset), deadline)) { + if (!grpc_pollset_work(&cc->pollset, deadline)) { gpr_mu_unlock(GRPC_POLLSET_MU(&cc->pollset)); memset(&ret, 0, sizeof(ret)); ret.type = GRPC_QUEUE_TIMEOUT; GRPC_SURFACE_TRACE_RETURNED_EVENT(cc, &ret); - grpc_cq_internal_unref(cc); + GRPC_CQ_INTERNAL_UNREF(cc, "pluck"); return ret; } } @@ -289,7 +284,7 @@ grpc_event grpc_completion_queue_pluck(grpc_completion_queue *cc, void *tag, ret = ev->base; gpr_free(ev); GRPC_SURFACE_TRACE_RETURNED_EVENT(cc, &ret); - grpc_cq_internal_unref(cc); + GRPC_CQ_INTERNAL_UNREF(cc, "pluck"); return ret; } @@ -297,6 +292,10 @@ grpc_event grpc_completion_queue_pluck(grpc_completion_queue *cc, void *tag, to zero here, then enter shutdown mode and wake up any waiters */ void grpc_completion_queue_shutdown(grpc_completion_queue *cc) { gpr_mu_lock(GRPC_POLLSET_MU(&cc->pollset)); + if (cc->shutdown_called) { + gpr_mu_unlock(GRPC_POLLSET_MU(&cc->pollset)); + return; + } cc->shutdown_called = 1; gpr_mu_unlock(GRPC_POLLSET_MU(&cc->pollset)); @@ -304,14 +303,14 @@ void grpc_completion_queue_shutdown(grpc_completion_queue *cc) { gpr_mu_lock(GRPC_POLLSET_MU(&cc->pollset)); GPR_ASSERT(!cc->shutdown); cc->shutdown = 1; - gpr_cv_broadcast(GRPC_POLLSET_CV(&cc->pollset)); gpr_mu_unlock(GRPC_POLLSET_MU(&cc->pollset)); grpc_pollset_shutdown(&cc->pollset, on_pollset_destroy_done, cc); } } void grpc_completion_queue_destroy(grpc_completion_queue *cc) { - grpc_cq_internal_unref(cc); + grpc_completion_queue_shutdown(cc); + GRPC_CQ_INTERNAL_UNREF(cc, "destroy"); } grpc_pollset *grpc_cq_pollset(grpc_completion_queue *cc) { @@ -325,3 +324,7 @@ void grpc_cq_hack_spin_pollset(grpc_completion_queue *cc) { gpr_time_add(gpr_now(), gpr_time_from_millis(100))); gpr_mu_unlock(GRPC_POLLSET_MU(&cc->pollset)); } + +void grpc_cq_mark_server_cq(grpc_completion_queue *cc) { cc->is_server_cq = 1; } + +int grpc_cq_is_server_cq(grpc_completion_queue *cc) { return cc->is_server_cq; } diff --git a/src/core/surface/completion_queue.h b/src/core/surface/completion_queue.h index 7b6fad98fd..e76910c00b 100644 --- a/src/core/surface/completion_queue.h +++ b/src/core/surface/completion_queue.h @@ -39,8 +39,17 @@ #include "src/core/iomgr/pollset.h" #include <grpc/grpc.h> +#ifdef GRPC_CQ_REF_COUNT_DEBUG +void grpc_cq_internal_ref(grpc_completion_queue *cc, const char *reason); +void grpc_cq_internal_unref(grpc_completion_queue *cc, const char *reason); +#define GRPC_CQ_INTERNAL_REF(cc, reason) grpc_cq_internal_ref(cc, reason) +#define GRPC_CQ_INTERNAL_UNREF(cc, reason) grpc_cq_internal_unref(cc, reason) +#else void grpc_cq_internal_ref(grpc_completion_queue *cc); void grpc_cq_internal_unref(grpc_completion_queue *cc); +#define GRPC_CQ_INTERNAL_REF(cc, reason) grpc_cq_internal_ref(cc) +#define GRPC_CQ_INTERNAL_UNREF(cc, reason) grpc_cq_internal_unref(cc) +#endif /* Flag that an operation is beginning: the completion channel will not finish shutdown until a corrensponding grpc_cq_end_* call is made */ @@ -50,11 +59,11 @@ void grpc_cq_begin_op(grpc_completion_queue *cc, grpc_call *call); void grpc_cq_end_op(grpc_completion_queue *cc, void *tag, grpc_call *call, int success); -/* disable polling for some tests */ -void grpc_completion_queue_dont_poll_test_only(grpc_completion_queue *cc); - grpc_pollset *grpc_cq_pollset(grpc_completion_queue *cc); void grpc_cq_hack_spin_pollset(grpc_completion_queue *cc); +void grpc_cq_mark_server_cq(grpc_completion_queue *cc); +int grpc_cq_is_server_cq(grpc_completion_queue *cc); + #endif /* GRPC_INTERNAL_CORE_SURFACE_COMPLETION_QUEUE_H */ diff --git a/src/core/surface/lame_client.c b/src/core/surface/lame_client.c index a3b0b2672b..85e1ab5554 100644 --- a/src/core/surface/lame_client.c +++ b/src/core/surface/lame_client.c @@ -56,7 +56,7 @@ static void lame_start_transport_op(grpc_call_element *elem, GRPC_CALL_LOG_OP(GPR_INFO, elem, op); if (op->send_ops) { grpc_stream_ops_unref_owned_objects(op->send_ops->ops, op->send_ops->nops); - op->on_done_send(op->send_user_data, 0); + op->on_done_send->cb(op->on_done_send->cb_arg, 0); } if (op->recv_ops) { char tmp[GPR_LTOA_MIN_BUFSIZE]; @@ -75,7 +75,10 @@ static void lame_start_transport_op(grpc_call_element *elem, mdb.deadline = gpr_inf_future; grpc_sopb_add_metadata(op->recv_ops, mdb); *op->recv_state = GRPC_STREAM_CLOSED; - op->on_done_recv(op->recv_user_data, 1); + op->on_done_recv->cb(op->on_done_recv->cb_arg, 1); + } + if (op->on_consumed) { + op->on_consumed->cb(op->on_consumed->cb_arg, 0); } } @@ -115,9 +118,9 @@ static void init_channel_elem(grpc_channel_element *elem, static void destroy_channel_elem(grpc_channel_element *elem) {} static const grpc_channel_filter lame_filter = { - lame_start_transport_op, channel_op, sizeof(call_data), init_call_elem, - destroy_call_elem, sizeof(channel_data), init_channel_elem, - destroy_channel_elem, "lame-client", + lame_start_transport_op, channel_op, sizeof(call_data), + init_call_elem, destroy_call_elem, sizeof(channel_data), + init_channel_elem, destroy_channel_elem, "lame-client", }; grpc_channel *grpc_lame_client_channel_create(void) { diff --git a/src/core/surface/secure_channel_create.c b/src/core/surface/secure_channel_create.c index 8b39934881..fae3e4e90a 100644 --- a/src/core/surface/secure_channel_create.c +++ b/src/core/surface/secure_channel_create.c @@ -97,12 +97,13 @@ static void on_secure_transport_setup_done(void *rp, if (status != GRPC_SECURITY_OK) { gpr_log(GPR_ERROR, "Secure transport setup failed with error %d.", status); done(r, 0); - } else if (grpc_client_setup_cb_begin(r->cs_request)) { + } else if (grpc_client_setup_cb_begin(r->cs_request, + "on_secure_transport_setup_done")) { grpc_create_chttp2_transport( r->setup->setup_callback, r->setup->setup_user_data, grpc_client_setup_get_channel_args(r->cs_request), secure_endpoint, NULL, 0, grpc_client_setup_get_mdctx(r->cs_request), 1); - grpc_client_setup_cb_end(r->cs_request); + grpc_client_setup_cb_end(r->cs_request, "on_secure_transport_setup_done"); done(r, 1); } else { done(r, 0); @@ -113,7 +114,8 @@ static void on_secure_transport_setup_done(void *rp, static void on_connect(void *rp, grpc_endpoint *tcp) { request *r = rp; - if (!grpc_client_setup_request_should_continue(r->cs_request)) { + if (!grpc_client_setup_request_should_continue(r->cs_request, + "on_connect.secure")) { if (tcp) { grpc_endpoint_shutdown(tcp); grpc_endpoint_destroy(tcp); @@ -141,9 +143,10 @@ static int maybe_try_next_resolved(request *r) { if (!r->resolved) return 0; if (r->resolved_index == r->resolved->naddrs) return 0; addr = &r->resolved->addrs[r->resolved_index++]; - grpc_tcp_client_connect(on_connect, r, (struct sockaddr *)&addr->addr, - addr->len, - grpc_client_setup_request_deadline(r->cs_request)); + grpc_tcp_client_connect( + on_connect, r, grpc_client_setup_get_interested_parties(r->cs_request), + (struct sockaddr *)&addr->addr, addr->len, + grpc_client_setup_request_deadline(r->cs_request)); return 1; } @@ -152,7 +155,8 @@ static void on_resolved(void *rp, grpc_resolved_addresses *resolved) { request *r = rp; /* if we're not still the active request, abort */ - if (!grpc_client_setup_request_should_continue(r->cs_request)) { + if (!grpc_client_setup_request_should_continue(r->cs_request, + "on_resolved.secure")) { if (resolved) { grpc_resolved_addresses_destroy(resolved); } diff --git a/src/core/surface/server.c b/src/core/surface/server.c index 825ef66804..43e9afd56b 100644 --- a/src/core/surface/server.c +++ b/src/core/surface/server.c @@ -114,6 +114,7 @@ typedef struct channel_registered_method { struct channel_data { grpc_server *server; + size_t num_calls; grpc_channel *channel; grpc_mdstr *path_key; grpc_mdstr *authority_key; @@ -123,7 +124,6 @@ struct channel_data { channel_registered_method *registered_methods; gpr_uint32 registered_method_slots; gpr_uint32 registered_method_max_probes; - grpc_iomgr_closure finish_shutdown_channel_closure; grpc_iomgr_closure finish_destroy_channel_closure; }; @@ -183,9 +183,9 @@ struct call_data { grpc_stream_op_buffer *recv_ops; grpc_stream_state *recv_state; - void (*on_done_recv)(void *user_data, int success); - void *recv_user_data; + grpc_iomgr_closure *on_done_recv; + grpc_iomgr_closure server_on_recv; grpc_iomgr_closure kill_zombie_closure; call_data **root[CALL_LIST_COUNT]; @@ -198,6 +198,9 @@ struct call_data { static void begin_call(grpc_server *server, call_data *calld, requested_call *rc); static void fail_call(grpc_server *server, requested_call *rc); +static void shutdown_channel(channel_data *chand, int send_goaway, + int send_disconnect); +static void maybe_finish_shutdown(grpc_server *server); static int call_list_join(call_data **root, call_data *call, call_list list) { GPR_ASSERT(!call->root[list]); @@ -281,7 +284,7 @@ static void server_delete(grpc_server *server) { gpr_free(rm); } for (i = 0; i < server->cq_count; i++) { - grpc_cq_internal_unref(server->cqs[i]); + GRPC_CQ_INTERNAL_UNREF(server->cqs[i], "server"); } gpr_free(server->cqs); gpr_free(server->pollsets); @@ -308,7 +311,7 @@ static void orphan_channel(channel_data *chand) { static void finish_destroy_channel(void *cd, int success) { channel_data *chand = cd; grpc_server *server = chand->server; - grpc_channel_internal_unref(chand->channel); + GRPC_CHANNEL_INTERNAL_UNREF(chand->channel, "server"); server_unref(server); } @@ -317,6 +320,7 @@ static void destroy_channel(channel_data *chand) { GPR_ASSERT(chand->server != NULL); orphan_channel(chand); server_ref(chand->server); + maybe_finish_shutdown(chand->server); chand->finish_destroy_channel_closure.cb = finish_destroy_channel; chand->finish_destroy_channel_closure.cb_arg = chand; grpc_iomgr_add_callback(&chand->finish_destroy_channel_closure); @@ -397,12 +401,28 @@ static int num_listeners(grpc_server *server) { static void maybe_finish_shutdown(grpc_server *server) { size_t i; - if (server->shutdown && !server->shutdown_published && server->lists[ALL_CALLS] == NULL && server->listeners_destroyed == num_listeners(server)) { - server->shutdown_published = 1; - for (i = 0; i < server->num_shutdown_tags; i++) { - grpc_cq_end_op(server->shutdown_tags[i].cq, server->shutdown_tags[i].tag, - NULL, 1); - } + if (!server->shutdown || server->shutdown_published) { + return; + } + if (server->lists[ALL_CALLS] != NULL) { + gpr_log(GPR_DEBUG, + "Waiting for all calls to finish before destroying server"); + return; + } + if (server->root_channel_data.next != &server->root_channel_data) { + gpr_log(GPR_DEBUG, + "Waiting for all channels to close before destroying server"); + return; + } + if (server->listeners_destroyed < num_listeners(server)) { + gpr_log(GPR_DEBUG, "Waiting for all listeners to be destroyed (@ %d/%d)", + server->listeners_destroyed, num_listeners(server)); + return; + } + server->shutdown_published = 1; + for (i = 0; i < server->num_shutdown_tags; i++) { + grpc_cq_end_op(server->shutdown_tags[i].cq, server->shutdown_tags[i].tag, + NULL, 1); } } @@ -420,6 +440,14 @@ static grpc_mdelem *server_filter(void *user_data, grpc_mdelem *md) { return md; } +static void decrement_call_count(channel_data *chand) { + chand->num_calls--; + if (0 == chand->num_calls && chand->server->shutdown) { + shutdown_channel(chand, 0, 1); + } + maybe_finish_shutdown(chand->server); +} + static void server_on_recv(void *ptr, int success) { grpc_call_element *elem = ptr; call_data *calld = elem->call_data; @@ -467,16 +495,15 @@ static void server_on_recv(void *ptr, int success) { calld->state = ZOMBIED; grpc_iomgr_closure_init(&calld->kill_zombie_closure, kill_zombie, elem); grpc_iomgr_add_callback(&calld->kill_zombie_closure); - } if (call_list_remove(calld, ALL_CALLS)) { - maybe_finish_shutdown(chand->server); + decrement_call_count(chand); } gpr_mu_unlock(&chand->server->mu); break; } - calld->on_done_recv(calld->recv_user_data, success); + calld->on_done_recv->cb(calld->on_done_recv->cb_arg, success); } static void server_mutate_op(grpc_call_element *elem, grpc_transport_op *op) { @@ -487,9 +514,7 @@ static void server_mutate_op(grpc_call_element *elem, grpc_transport_op *op) { calld->recv_ops = op->recv_ops; calld->recv_state = op->recv_state; calld->on_done_recv = op->on_done_recv; - calld->recv_user_data = op->recv_user_data; - op->on_done_recv = server_on_recv; - op->recv_user_data = elem; + op->on_done_recv = &calld->server_on_recv; } } @@ -531,22 +556,49 @@ static void channel_op(grpc_channel_element *elem, } } -static void finish_shutdown_channel(void *cd, int success) { - channel_data *chand = cd; +typedef struct { + channel_data *chand; + int send_goaway; + int send_disconnect; + grpc_iomgr_closure finish_shutdown_channel_closure; +} shutdown_channel_args; + +static void finish_shutdown_channel(void *p, int success) { + shutdown_channel_args *sca = p; grpc_channel_op op; - op.type = GRPC_CHANNEL_DISCONNECT; - op.dir = GRPC_CALL_DOWN; - channel_op(grpc_channel_stack_element( - grpc_channel_get_channel_stack(chand->channel), 0), - NULL, &op); - grpc_channel_internal_unref(chand->channel); + + if (sca->send_goaway) { + op.type = GRPC_CHANNEL_GOAWAY; + op.dir = GRPC_CALL_DOWN; + op.data.goaway.status = GRPC_STATUS_OK; + op.data.goaway.message = gpr_slice_from_copied_string("Server shutdown"); + channel_op(grpc_channel_stack_element( + grpc_channel_get_channel_stack(sca->chand->channel), 0), + NULL, &op); + } + if (sca->send_disconnect) { + op.type = GRPC_CHANNEL_DISCONNECT; + op.dir = GRPC_CALL_DOWN; + channel_op(grpc_channel_stack_element( + grpc_channel_get_channel_stack(sca->chand->channel), 0), + NULL, &op); + } + GRPC_CHANNEL_INTERNAL_UNREF(sca->chand->channel, "shutdown"); + + gpr_free(sca); } -static void shutdown_channel(channel_data *chand) { - grpc_channel_internal_ref(chand->channel); - chand->finish_shutdown_channel_closure.cb = finish_shutdown_channel; - chand->finish_shutdown_channel_closure.cb_arg = chand; - grpc_iomgr_add_callback(&chand->finish_shutdown_channel_closure); +static void shutdown_channel(channel_data *chand, int send_goaway, + int send_disconnect) { + shutdown_channel_args *sca; + GRPC_CHANNEL_INTERNAL_REF(chand->channel, "shutdown"); + sca = gpr_malloc(sizeof(shutdown_channel_args)); + sca->chand = chand; + sca->send_goaway = send_goaway; + sca->send_disconnect = send_disconnect; + sca->finish_shutdown_channel_closure.cb = finish_shutdown_channel; + sca->finish_shutdown_channel_closure.cb_arg = sca; + grpc_iomgr_add_callback(&sca->finish_shutdown_channel_closure); } static void init_call_elem(grpc_call_element *elem, @@ -558,8 +610,11 @@ static void init_call_elem(grpc_call_element *elem, calld->deadline = gpr_inf_future; calld->call = grpc_call_from_top_element(elem); + grpc_iomgr_closure_init(&calld->server_on_recv, server_on_recv, elem); + gpr_mu_lock(&chand->server->mu); call_list_join(&chand->server->lists[ALL_CALLS], calld, ALL_CALLS); + chand->num_calls++; gpr_mu_unlock(&chand->server->mu); server_ref(chand->server); @@ -578,7 +633,7 @@ static void destroy_call_elem(grpc_call_element *elem) { removed[i] = call_list_remove(elem->call_data, i); } if (removed[ALL_CALLS]) { - maybe_finish_shutdown(chand->server); + decrement_call_count(chand); } gpr_mu_unlock(&chand->server->mu); @@ -600,6 +655,7 @@ static void init_channel_elem(grpc_channel_element *elem, GPR_ASSERT(is_first); GPR_ASSERT(!is_last); chand->server = NULL; + chand->num_calls = 0; chand->channel = NULL; chand->path_key = grpc_mdstr_from_string(metadata_context, ":path"); chand->authority_key = grpc_mdstr_from_string(metadata_context, ":authority"); @@ -626,6 +682,7 @@ static void destroy_channel_elem(grpc_channel_element *elem) { chand->next->prev = chand->prev; chand->prev->next = chand->next; chand->next = chand->prev = chand; + maybe_finish_shutdown(chand->server); gpr_mu_unlock(&chand->server->mu); grpc_mdstr_unref(chand->path_key); grpc_mdstr_unref(chand->authority_key); @@ -651,7 +708,8 @@ void grpc_server_register_completion_queue(grpc_server *server, for (i = 0; i < server->cq_count; i++) { if (server->cqs[i] == cq) return; } - grpc_cq_internal_ref(cq); + GRPC_CQ_INTERNAL_REF(cq, "server"); + grpc_cq_mark_server_cq(cq); n = server->cq_count++; server->cqs = gpr_realloc(server->cqs, server->cq_count * sizeof(grpc_completion_queue *)); @@ -713,7 +771,8 @@ void *grpc_server_register_method(grpc_server *server, const char *method, const char *host) { registered_method *m; if (!method) { - gpr_log(GPR_ERROR, "grpc_server_register_method method string cannot be NULL"); + gpr_log(GPR_ERROR, + "grpc_server_register_method method string cannot be NULL"); return NULL; } for (m = server->registered_methods; m; m = m->next) { @@ -836,12 +895,8 @@ void grpc_server_shutdown_and_notify(grpc_server *server, grpc_completion_queue *cq, void *tag) { listener *l; requested_call_array requested_calls; - channel_data **channels; channel_data *c; - size_t nchannels; size_t i; - grpc_channel_op op; - grpc_channel_element *elem; registered_method *rm; shutdown_tag *sdt; @@ -859,18 +914,9 @@ void grpc_server_shutdown_and_notify(grpc_server *server, return; } - nchannels = 0; for (c = server->root_channel_data.next; c != &server->root_channel_data; c = c->next) { - nchannels++; - } - channels = gpr_malloc(sizeof(channel_data *) * nchannels); - i = 0; - for (c = server->root_channel_data.next; c != &server->root_channel_data; - c = c->next) { - grpc_channel_internal_ref(c->channel); - channels[i] = c; - i++; + shutdown_channel(c, 1, c->num_calls == 0); } /* collect all unregistered then registered calls */ @@ -897,21 +943,6 @@ void grpc_server_shutdown_and_notify(grpc_server *server, maybe_finish_shutdown(server); gpr_mu_unlock(&server->mu); - for (i = 0; i < nchannels; i++) { - c = channels[i]; - elem = grpc_channel_stack_element( - grpc_channel_get_channel_stack(c->channel), 0); - - op.type = GRPC_CHANNEL_GOAWAY; - op.dir = GRPC_CALL_DOWN; - op.data.goaway.status = GRPC_STATUS_OK; - op.data.goaway.message = gpr_slice_from_copied_string("Server shutdown"); - elem->filter->channel_op(elem, NULL, &op); - - grpc_channel_internal_unref(c->channel); - } - gpr_free(channels); - /* terminate all the requested calls */ for (i = 0; i < requested_calls.count; i++) { fail_call(server, &requested_calls.calls[i]); @@ -953,7 +984,9 @@ void grpc_server_cancel_all_calls(grpc_server *server) { call_count = 0; calls = gpr_malloc(sizeof(grpc_call *) * call_capacity); - for (calld = server->lists[ALL_CALLS]; calld != server->lists[ALL_CALLS] || is_first; calld = calld->links[ALL_CALLS].next) { + for (calld = server->lists[ALL_CALLS]; + calld != server->lists[ALL_CALLS] || is_first; + calld = calld->links[ALL_CALLS].next) { if (call_count == call_capacity) { call_capacity *= 2; calls = gpr_realloc(calls, sizeof(grpc_call *) * call_capacity); @@ -966,7 +999,8 @@ void grpc_server_cancel_all_calls(grpc_server *server) { gpr_mu_unlock(&server->mu); for (i = 0; i < call_count; i++) { - grpc_call_cancel_with_status(calls[i], GRPC_STATUS_UNAVAILABLE, "Unavailable"); + grpc_call_cancel_with_status(calls[i], GRPC_STATUS_UNAVAILABLE, + "Unavailable"); GRPC_CALL_INTERNAL_UNREF(calls[i], "cancel_all", 1); } @@ -974,9 +1008,7 @@ void grpc_server_cancel_all_calls(grpc_server *server) { } void grpc_server_destroy(grpc_server *server) { - channel_data *c; listener *l; - call_data *calld; gpr_mu_lock(&server->mu); GPR_ASSERT(server->shutdown || !server->listeners); @@ -988,19 +1020,6 @@ void grpc_server_destroy(grpc_server *server) { gpr_free(l); } - while ((calld = call_list_remove_head(&server->lists[PENDING_START], - PENDING_START)) != NULL) { - calld->state = ZOMBIED; - grpc_iomgr_closure_init( - &calld->kill_zombie_closure, kill_zombie, - grpc_call_stack_element(grpc_call_get_call_stack(calld->call), 0)); - grpc_iomgr_add_callback(&calld->kill_zombie_closure); - } - - for (c = server->root_channel_data.next; c != &server->root_channel_data; - c = c->next) { - shutdown_channel(c); - } gpr_mu_unlock(&server->mu); server_unref(server); @@ -1063,6 +1082,9 @@ grpc_call_error grpc_server_request_call( GRPC_SERVER_LOG_REQUEST_CALL(GPR_INFO, server, call, details, initial_metadata, cq_bound_to_call, cq_for_notification, tag); + if (!grpc_cq_is_server_cq(cq_for_notification)) { + return GRPC_CALL_ERROR_NOT_SERVER_COMPLETION_QUEUE; + } grpc_cq_begin_op(cq_for_notification, NULL); rc.type = BATCH_CALL; rc.tag = tag; @@ -1081,6 +1103,9 @@ grpc_call_error grpc_server_request_registered_call( grpc_completion_queue *cq_for_notification, void *tag) { requested_call rc; registered_method *registered_method = rm; + if (!grpc_cq_is_server_cq(cq_for_notification)) { + return GRPC_CALL_ERROR_NOT_SERVER_COMPLETION_QUEUE; + } grpc_cq_begin_op(cq_for_notification, NULL); rc.type = REGISTERED_CALL; rc.tag = tag; @@ -1192,4 +1217,3 @@ int grpc_server_has_open_connections(grpc_server *server) { gpr_mu_unlock(&server->mu); return r; } - diff --git a/src/core/transport/chttp2/alpn.h b/src/core/transport/chttp2/alpn.h index fcbefc060f..f38b4c3167 100644 --- a/src/core/transport/chttp2/alpn.h +++ b/src/core/transport/chttp2/alpn.h @@ -46,4 +46,4 @@ size_t grpc_chttp2_num_alpn_versions(void); * grpc_chttp2_num_alpn_versions()) */ const char *grpc_chttp2_get_alpn_version_index(size_t i); -#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_ALPN_H */ +#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_ALPN_H */ diff --git a/src/core/transport/chttp2/bin_encoder.c b/src/core/transport/chttp2/bin_encoder.c index f5ca6c4e50..dee6dbec8b 100644 --- a/src/core/transport/chttp2/bin_encoder.c +++ b/src/core/transport/chttp2/bin_encoder.c @@ -46,70 +46,18 @@ typedef struct { gpr_uint8 length; } b64_huff_sym; -static const b64_huff_sym huff_alphabet[64] = {{0x21, 6}, - {0x5d, 7}, - {0x5e, 7}, - {0x5f, 7}, - {0x60, 7}, - {0x61, 7}, - {0x62, 7}, - {0x63, 7}, - {0x64, 7}, - {0x65, 7}, - {0x66, 7}, - {0x67, 7}, - {0x68, 7}, - {0x69, 7}, - {0x6a, 7}, - {0x6b, 7}, - {0x6c, 7}, - {0x6d, 7}, - {0x6e, 7}, - {0x6f, 7}, - {0x70, 7}, - {0x71, 7}, - {0x72, 7}, - {0xfc, 8}, - {0x73, 7}, - {0xfd, 8}, - {0x3, 5}, - {0x23, 6}, - {0x4, 5}, - {0x24, 6}, - {0x5, 5}, - {0x25, 6}, - {0x26, 6}, - {0x27, 6}, - {0x6, 5}, - {0x74, 7}, - {0x75, 7}, - {0x28, 6}, - {0x29, 6}, - {0x2a, 6}, - {0x7, 5}, - {0x2b, 6}, - {0x76, 7}, - {0x2c, 6}, - {0x8, 5}, - {0x9, 5}, - {0x2d, 6}, - {0x77, 7}, - {0x78, 7}, - {0x79, 7}, - {0x7a, 7}, - {0x7b, 7}, - {0x0, 5}, - {0x1, 5}, - {0x2, 5}, - {0x19, 6}, - {0x1a, 6}, - {0x1b, 6}, - {0x1c, 6}, - {0x1d, 6}, - {0x1e, 6}, - {0x1f, 6}, - {0x7fb, 11}, - {0x18, 6}}; +static const b64_huff_sym huff_alphabet[64] = { + {0x21, 6}, {0x5d, 7}, {0x5e, 7}, {0x5f, 7}, {0x60, 7}, {0x61, 7}, + {0x62, 7}, {0x63, 7}, {0x64, 7}, {0x65, 7}, {0x66, 7}, {0x67, 7}, + {0x68, 7}, {0x69, 7}, {0x6a, 7}, {0x6b, 7}, {0x6c, 7}, {0x6d, 7}, + {0x6e, 7}, {0x6f, 7}, {0x70, 7}, {0x71, 7}, {0x72, 7}, {0xfc, 8}, + {0x73, 7}, {0xfd, 8}, {0x3, 5}, {0x23, 6}, {0x4, 5}, {0x24, 6}, + {0x5, 5}, {0x25, 6}, {0x26, 6}, {0x27, 6}, {0x6, 5}, {0x74, 7}, + {0x75, 7}, {0x28, 6}, {0x29, 6}, {0x2a, 6}, {0x7, 5}, {0x2b, 6}, + {0x76, 7}, {0x2c, 6}, {0x8, 5}, {0x9, 5}, {0x2d, 6}, {0x77, 7}, + {0x78, 7}, {0x79, 7}, {0x7a, 7}, {0x7b, 7}, {0x0, 5}, {0x1, 5}, + {0x2, 5}, {0x19, 6}, {0x1a, 6}, {0x1b, 6}, {0x1c, 6}, {0x1d, 6}, + {0x1e, 6}, {0x1f, 6}, {0x7fb, 11}, {0x18, 6}}; static const gpr_uint8 tail_xtra[3] = {0, 2, 3}; diff --git a/src/core/transport/chttp2/bin_encoder.h b/src/core/transport/chttp2/bin_encoder.h index 9c88ac9725..d3e5a855dd 100644 --- a/src/core/transport/chttp2/bin_encoder.h +++ b/src/core/transport/chttp2/bin_encoder.h @@ -53,4 +53,4 @@ gpr_slice grpc_chttp2_base64_encode_and_huffman_compress(gpr_slice input); int grpc_is_binary_header(const char *key, size_t length); -#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_BIN_ENCODER_H */ +#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_BIN_ENCODER_H */ diff --git a/src/core/transport/chttp2/frame.h b/src/core/transport/chttp2/frame.h index c9e3e13042..879ee036fa 100644 --- a/src/core/transport/chttp2/frame.h +++ b/src/core/transport/chttp2/frame.h @@ -45,23 +45,9 @@ typedef enum { GRPC_CHTTP2_CONNECTION_ERROR } grpc_chttp2_parse_error; -typedef struct { - gpr_uint8 end_of_stream; - gpr_uint8 need_flush_reads; - gpr_uint8 metadata_boundary; - gpr_uint8 ack_settings; - gpr_uint8 send_ping_ack; - gpr_uint8 process_ping_reply; - gpr_uint8 goaway; - gpr_uint8 rst_stream; - - gpr_int64 initial_window_update; - gpr_uint32 window_update; - gpr_uint32 goaway_last_stream_index; - gpr_uint32 goaway_error; - gpr_slice goaway_text; - gpr_uint32 rst_stream_reason; -} grpc_chttp2_parse_state; +/* defined in internal.h */ +typedef struct grpc_chttp2_stream_parsing grpc_chttp2_stream_parsing; +typedef struct grpc_chttp2_transport_parsing grpc_chttp2_transport_parsing; #define GRPC_CHTTP2_FRAME_DATA 0 #define GRPC_CHTTP2_FRAME_HEADER 1 @@ -80,4 +66,4 @@ typedef struct { #define GRPC_CHTTP2_DATA_FLAG_PADDED 8 #define GRPC_CHTTP2_FLAG_HAS_PRIORITY 0x20 -#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_FRAME_H */ +#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_FRAME_H */ diff --git a/src/core/transport/chttp2/frame_data.c b/src/core/transport/chttp2/frame_data.c index a1ae9ed2e6..0ad62a9999 100644 --- a/src/core/transport/chttp2/frame_data.c +++ b/src/core/transport/chttp2/frame_data.c @@ -35,6 +35,7 @@ #include <string.h> +#include "src/core/transport/chttp2/internal.h" #include "src/core/support/string.h" #include <grpc/support/alloc.h> #include <grpc/support/log.h> @@ -69,16 +70,15 @@ grpc_chttp2_parse_error grpc_chttp2_data_parser_begin_frame( } grpc_chttp2_parse_error grpc_chttp2_data_parser_parse( - void *parser, grpc_chttp2_parse_state *state, gpr_slice slice, - int is_last) { + void *parser, grpc_chttp2_transport_parsing *transport_parsing, + grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last) { gpr_uint8 *const beg = GPR_SLICE_START_PTR(slice); gpr_uint8 *const end = GPR_SLICE_END_PTR(slice); gpr_uint8 *cur = beg; grpc_chttp2_data_parser *p = parser; if (is_last && p->is_last_frame) { - state->end_of_stream = 1; - state->need_flush_reads = 1; + stream_parsing->received_close = 1; } if (cur == end) { @@ -105,51 +105,52 @@ grpc_chttp2_parse_error grpc_chttp2_data_parser_parse( } /* fallthrough */ case GRPC_CHTTP2_DATA_FH_1: - p->frame_size = ((gpr_uint32) * cur) << 24; + p->frame_size = ((gpr_uint32)*cur) << 24; if (++cur == end) { p->state = GRPC_CHTTP2_DATA_FH_2; return GRPC_CHTTP2_PARSE_OK; } /* fallthrough */ case GRPC_CHTTP2_DATA_FH_2: - p->frame_size |= ((gpr_uint32) * cur) << 16; + p->frame_size |= ((gpr_uint32)*cur) << 16; if (++cur == end) { p->state = GRPC_CHTTP2_DATA_FH_3; return GRPC_CHTTP2_PARSE_OK; } /* fallthrough */ case GRPC_CHTTP2_DATA_FH_3: - p->frame_size |= ((gpr_uint32) * cur) << 8; + p->frame_size |= ((gpr_uint32)*cur) << 8; if (++cur == end) { p->state = GRPC_CHTTP2_DATA_FH_4; return GRPC_CHTTP2_PARSE_OK; } /* fallthrough */ case GRPC_CHTTP2_DATA_FH_4: - p->frame_size |= ((gpr_uint32) * cur); + p->frame_size |= ((gpr_uint32)*cur); p->state = GRPC_CHTTP2_DATA_FRAME; ++cur; - state->need_flush_reads = 1; grpc_sopb_add_begin_message(&p->incoming_sopb, p->frame_size, 0); /* fallthrough */ case GRPC_CHTTP2_DATA_FRAME: if (cur == end) { + grpc_chttp2_list_add_parsing_seen_stream(transport_parsing, + stream_parsing); return GRPC_CHTTP2_PARSE_OK; - } else if ((gpr_uint32)(end - cur) == p->frame_size) { - state->need_flush_reads = 1; + } + grpc_chttp2_list_add_parsing_seen_stream(transport_parsing, + stream_parsing); + if ((gpr_uint32)(end - cur) == p->frame_size) { grpc_sopb_add_slice(&p->incoming_sopb, gpr_slice_sub(slice, cur - beg, end - beg)); p->state = GRPC_CHTTP2_DATA_FH_0; return GRPC_CHTTP2_PARSE_OK; } else if ((gpr_uint32)(end - cur) > p->frame_size) { - state->need_flush_reads = 1; grpc_sopb_add_slice( &p->incoming_sopb, gpr_slice_sub(slice, cur - beg, cur + p->frame_size - beg)); cur += p->frame_size; goto fh_0; /* loop */ } else { - state->need_flush_reads = 1; grpc_sopb_add_slice(&p->incoming_sopb, gpr_slice_sub(slice, cur - beg, end - beg)); p->frame_size -= (end - cur); diff --git a/src/core/transport/chttp2/frame_data.h b/src/core/transport/chttp2/frame_data.h index 24e557accd..8d6cfcb841 100644 --- a/src/core/transport/chttp2/frame_data.h +++ b/src/core/transport/chttp2/frame_data.h @@ -72,9 +72,10 @@ grpc_chttp2_parse_error grpc_chttp2_data_parser_begin_frame( /* handle a slice of a data frame - is_last indicates the last slice of a frame */ grpc_chttp2_parse_error grpc_chttp2_data_parser_parse( - void *parser, grpc_chttp2_parse_state *state, gpr_slice slice, int is_last); + void *parser, grpc_chttp2_transport_parsing *transport_parsing, + grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last); /* create a slice with an empty data frame and is_last set */ gpr_slice grpc_chttp2_data_frame_create_empty_close(gpr_uint32 id); -#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_FRAME_DATA_H */ +#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_FRAME_DATA_H */ diff --git a/src/core/transport/chttp2/frame_goaway.c b/src/core/transport/chttp2/frame_goaway.c index 95b75d4fde..1ccbba840c 100644 --- a/src/core/transport/chttp2/frame_goaway.c +++ b/src/core/transport/chttp2/frame_goaway.c @@ -32,6 +32,7 @@ */ #include "src/core/transport/chttp2/frame_goaway.h" +#include "src/core/transport/chttp2/internal.h" #include <string.h> @@ -62,8 +63,8 @@ grpc_chttp2_parse_error grpc_chttp2_goaway_parser_begin_frame( } grpc_chttp2_parse_error grpc_chttp2_goaway_parser_parse( - void *parser, grpc_chttp2_parse_state *state, gpr_slice slice, - int is_last) { + void *parser, grpc_chttp2_transport_parsing *transport_parsing, + grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last) { gpr_uint8 *const beg = GPR_SLICE_START_PTR(slice); gpr_uint8 *const end = GPR_SLICE_END_PTR(slice); gpr_uint8 *cur = beg; @@ -75,7 +76,7 @@ grpc_chttp2_parse_error grpc_chttp2_goaway_parser_parse( p->state = GRPC_CHTTP2_GOAWAY_LSI0; return GRPC_CHTTP2_PARSE_OK; } - p->last_stream_id = ((gpr_uint32) * cur) << 24; + p->last_stream_id = ((gpr_uint32)*cur) << 24; ++cur; /* fallthrough */ case GRPC_CHTTP2_GOAWAY_LSI1: @@ -83,7 +84,7 @@ grpc_chttp2_parse_error grpc_chttp2_goaway_parser_parse( p->state = GRPC_CHTTP2_GOAWAY_LSI1; return GRPC_CHTTP2_PARSE_OK; } - p->last_stream_id |= ((gpr_uint32) * cur) << 16; + p->last_stream_id |= ((gpr_uint32)*cur) << 16; ++cur; /* fallthrough */ case GRPC_CHTTP2_GOAWAY_LSI2: @@ -91,7 +92,7 @@ grpc_chttp2_parse_error grpc_chttp2_goaway_parser_parse( p->state = GRPC_CHTTP2_GOAWAY_LSI2; return GRPC_CHTTP2_PARSE_OK; } - p->last_stream_id |= ((gpr_uint32) * cur) << 8; + p->last_stream_id |= ((gpr_uint32)*cur) << 8; ++cur; /* fallthrough */ case GRPC_CHTTP2_GOAWAY_LSI3: @@ -99,7 +100,7 @@ grpc_chttp2_parse_error grpc_chttp2_goaway_parser_parse( p->state = GRPC_CHTTP2_GOAWAY_LSI3; return GRPC_CHTTP2_PARSE_OK; } - p->last_stream_id |= ((gpr_uint32) * cur); + p->last_stream_id |= ((gpr_uint32)*cur); ++cur; /* fallthrough */ case GRPC_CHTTP2_GOAWAY_ERR0: @@ -107,7 +108,7 @@ grpc_chttp2_parse_error grpc_chttp2_goaway_parser_parse( p->state = GRPC_CHTTP2_GOAWAY_ERR0; return GRPC_CHTTP2_PARSE_OK; } - p->error_code = ((gpr_uint32) * cur) << 24; + p->error_code = ((gpr_uint32)*cur) << 24; ++cur; /* fallthrough */ case GRPC_CHTTP2_GOAWAY_ERR1: @@ -115,7 +116,7 @@ grpc_chttp2_parse_error grpc_chttp2_goaway_parser_parse( p->state = GRPC_CHTTP2_GOAWAY_ERR1; return GRPC_CHTTP2_PARSE_OK; } - p->error_code |= ((gpr_uint32) * cur) << 16; + p->error_code |= ((gpr_uint32)*cur) << 16; ++cur; /* fallthrough */ case GRPC_CHTTP2_GOAWAY_ERR2: @@ -123,7 +124,7 @@ grpc_chttp2_parse_error grpc_chttp2_goaway_parser_parse( p->state = GRPC_CHTTP2_GOAWAY_ERR2; return GRPC_CHTTP2_PARSE_OK; } - p->error_code |= ((gpr_uint32) * cur) << 8; + p->error_code |= ((gpr_uint32)*cur) << 8; ++cur; /* fallthrough */ case GRPC_CHTTP2_GOAWAY_ERR3: @@ -131,7 +132,7 @@ grpc_chttp2_parse_error grpc_chttp2_goaway_parser_parse( p->state = GRPC_CHTTP2_GOAWAY_ERR3; return GRPC_CHTTP2_PARSE_OK; } - p->error_code |= ((gpr_uint32) * cur); + p->error_code |= ((gpr_uint32)*cur); ++cur; /* fallthrough */ case GRPC_CHTTP2_GOAWAY_DEBUG: @@ -139,10 +140,11 @@ grpc_chttp2_parse_error grpc_chttp2_goaway_parser_parse( p->debug_pos += end - cur; p->state = GRPC_CHTTP2_GOAWAY_DEBUG; if (is_last) { - state->goaway = 1; - state->goaway_last_stream_index = p->last_stream_id; - state->goaway_error = p->error_code; - state->goaway_text = + 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 = p->error_code; + transport_parsing->goaway_text = gpr_slice_new(p->debug_data, p->debug_length, gpr_free); p->debug_data = NULL; } diff --git a/src/core/transport/chttp2/frame_goaway.h b/src/core/transport/chttp2/frame_goaway.h index 7638891514..9c5edfc821 100644 --- a/src/core/transport/chttp2/frame_goaway.h +++ b/src/core/transport/chttp2/frame_goaway.h @@ -65,10 +65,11 @@ void grpc_chttp2_goaway_parser_destroy(grpc_chttp2_goaway_parser *p); grpc_chttp2_parse_error grpc_chttp2_goaway_parser_begin_frame( grpc_chttp2_goaway_parser *parser, gpr_uint32 length, gpr_uint8 flags); grpc_chttp2_parse_error grpc_chttp2_goaway_parser_parse( - void *parser, grpc_chttp2_parse_state *state, gpr_slice slice, int is_last); + void *parser, grpc_chttp2_transport_parsing *transport_parsing, + grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last); void grpc_chttp2_goaway_append(gpr_uint32 last_stream_id, gpr_uint32 error_code, gpr_slice debug_data, gpr_slice_buffer *slice_buffer); -#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_FRAME_GOAWAY_H */ +#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_FRAME_GOAWAY_H */ diff --git a/src/core/transport/chttp2/frame_ping.c b/src/core/transport/chttp2/frame_ping.c index 26004b3b7c..05451c7a8a 100644 --- a/src/core/transport/chttp2/frame_ping.c +++ b/src/core/transport/chttp2/frame_ping.c @@ -32,9 +32,11 @@ */ #include "src/core/transport/chttp2/frame_ping.h" +#include "src/core/transport/chttp2/internal.h" #include <string.h> +#include <grpc/support/alloc.h> #include <grpc/support/log.h> gpr_slice grpc_chttp2_ping_create(gpr_uint8 ack, gpr_uint8 *opaque_8bytes) { @@ -67,12 +69,13 @@ grpc_chttp2_parse_error grpc_chttp2_ping_parser_begin_frame( } grpc_chttp2_parse_error grpc_chttp2_ping_parser_parse( - void *parser, grpc_chttp2_parse_state *state, gpr_slice slice, - int is_last) { + void *parser, grpc_chttp2_transport_parsing *transport_parsing, + grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last) { gpr_uint8 *const beg = GPR_SLICE_START_PTR(slice); gpr_uint8 *const end = GPR_SLICE_END_PTR(slice); gpr_uint8 *cur = beg; grpc_chttp2_ping_parser *p = parser; + grpc_chttp2_outstanding_ping *ping; while (p->byte != 8 && cur != end) { p->opaque_8bytes[p->byte] = *cur; @@ -83,9 +86,18 @@ grpc_chttp2_parse_error grpc_chttp2_ping_parser_parse( if (p->byte == 8) { GPR_ASSERT(is_last); if (p->is_ack) { - state->process_ping_reply = 1; + for (ping = transport_parsing->pings.next; + ping != &transport_parsing->pings; ping = ping->next) { + if (0 == memcmp(p->opaque_8bytes, ping->id, 8)) { + grpc_iomgr_add_delayed_callback(ping->on_recv, 1); + } + ping->next->prev = ping->prev; + ping->prev->next = ping->next; + gpr_free(ping); + } } else { - state->send_ping_ack = 1; + gpr_slice_buffer_add(&transport_parsing->qbuf, + grpc_chttp2_ping_create(1, p->opaque_8bytes)); } } diff --git a/src/core/transport/chttp2/frame_ping.h b/src/core/transport/chttp2/frame_ping.h index 11d38b80ea..99197e8352 100644 --- a/src/core/transport/chttp2/frame_ping.h +++ b/src/core/transport/chttp2/frame_ping.h @@ -48,6 +48,7 @@ gpr_slice grpc_chttp2_ping_create(gpr_uint8 ack, gpr_uint8 *opaque_8bytes); grpc_chttp2_parse_error grpc_chttp2_ping_parser_begin_frame( grpc_chttp2_ping_parser *parser, gpr_uint32 length, gpr_uint8 flags); grpc_chttp2_parse_error grpc_chttp2_ping_parser_parse( - void *parser, grpc_chttp2_parse_state *state, gpr_slice slice, int is_last); + void *parser, grpc_chttp2_transport_parsing *transport_parsing, + grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last); -#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_FRAME_PING_H */ +#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_FRAME_PING_H */ diff --git a/src/core/transport/chttp2/frame_rst_stream.c b/src/core/transport/chttp2/frame_rst_stream.c index 3016aac7a2..a878d936c1 100644 --- a/src/core/transport/chttp2/frame_rst_stream.c +++ b/src/core/transport/chttp2/frame_rst_stream.c @@ -32,6 +32,7 @@ */ #include "src/core/transport/chttp2/frame_rst_stream.h" +#include "src/core/transport/chttp2/internal.h" #include <grpc/support/log.h> @@ -61,7 +62,8 @@ gpr_slice grpc_chttp2_rst_stream_create(gpr_uint32 id, gpr_uint32 code) { grpc_chttp2_parse_error grpc_chttp2_rst_stream_parser_begin_frame( grpc_chttp2_rst_stream_parser *parser, gpr_uint32 length, gpr_uint8 flags) { if (length != 4) { - gpr_log(GPR_ERROR, "invalid rst_stream: length=%d, flags=%02x", length, flags); + gpr_log(GPR_ERROR, "invalid rst_stream: length=%d, flags=%02x", length, + flags); return GRPC_CHTTP2_CONNECTION_ERROR; } parser->byte = 0; @@ -69,8 +71,8 @@ grpc_chttp2_parse_error grpc_chttp2_rst_stream_parser_begin_frame( } grpc_chttp2_parse_error grpc_chttp2_rst_stream_parser_parse( - void *parser, grpc_chttp2_parse_state *state, gpr_slice slice, - int is_last) { + void *parser, grpc_chttp2_transport_parsing *transport_parsing, + grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last) { gpr_uint8 *const beg = GPR_SLICE_START_PTR(slice); gpr_uint8 *const end = GPR_SLICE_END_PTR(slice); gpr_uint8 *cur = beg; @@ -84,12 +86,13 @@ grpc_chttp2_parse_error grpc_chttp2_rst_stream_parser_parse( if (p->byte == 4) { GPR_ASSERT(is_last); - state->rst_stream = 1; - state->rst_stream_reason = - (((gpr_uint32)p->reason_bytes[0]) << 24) | - (((gpr_uint32)p->reason_bytes[1]) << 16) | - (((gpr_uint32)p->reason_bytes[2]) << 8) | - (((gpr_uint32)p->reason_bytes[3])); + stream_parsing->received_close = 1; + stream_parsing->saw_rst_stream = 1; + stream_parsing->rst_stream_reason = + (((gpr_uint32)p->reason_bytes[0]) << 24) | + (((gpr_uint32)p->reason_bytes[1]) << 16) | + (((gpr_uint32)p->reason_bytes[2]) << 8) | + (((gpr_uint32)p->reason_bytes[3])); } return GRPC_CHTTP2_PARSE_OK; diff --git a/src/core/transport/chttp2/frame_rst_stream.h b/src/core/transport/chttp2/frame_rst_stream.h index 07a3c98d03..ed69e588af 100644 --- a/src/core/transport/chttp2/frame_rst_stream.h +++ b/src/core/transport/chttp2/frame_rst_stream.h @@ -47,6 +47,7 @@ gpr_slice grpc_chttp2_rst_stream_create(gpr_uint32 stream_id, gpr_uint32 code); grpc_chttp2_parse_error grpc_chttp2_rst_stream_parser_begin_frame( grpc_chttp2_rst_stream_parser *parser, gpr_uint32 length, gpr_uint8 flags); grpc_chttp2_parse_error grpc_chttp2_rst_stream_parser_parse( - void *parser, grpc_chttp2_parse_state *state, gpr_slice slice, int is_last); + void *parser, grpc_chttp2_transport_parsing *transport_parsing, + grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last); -#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_FRAME_RST_STREAM_H */ +#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_FRAME_RST_STREAM_H */ diff --git a/src/core/transport/chttp2/frame_settings.c b/src/core/transport/chttp2/frame_settings.c index 2ffce730d5..119c25b12c 100644 --- a/src/core/transport/chttp2/frame_settings.c +++ b/src/core/transport/chttp2/frame_settings.c @@ -32,6 +32,7 @@ */ #include "src/core/transport/chttp2/frame_settings.h" +#include "src/core/transport/chttp2/internal.h" #include <string.h> @@ -137,7 +138,8 @@ grpc_chttp2_parse_error grpc_chttp2_settings_parser_begin_frame( } grpc_chttp2_parse_error grpc_chttp2_settings_parser_parse( - void *p, grpc_chttp2_parse_state *state, gpr_slice slice, int is_last) { + void *p, grpc_chttp2_transport_parsing *transport_parsing, + grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last) { grpc_chttp2_settings_parser *parser = p; const gpr_uint8 *cur = GPR_SLICE_START_PTR(slice); const gpr_uint8 *end = GPR_SLICE_END_PTR(slice); @@ -154,7 +156,8 @@ grpc_chttp2_parse_error grpc_chttp2_settings_parser_parse( if (is_last) { memcpy(parser->target_settings, parser->incoming_settings, GRPC_CHTTP2_NUM_SETTINGS * sizeof(gpr_uint32)); - state->ack_settings = 1; + gpr_slice_buffer_add(&transport_parsing->qbuf, + grpc_chttp2_settings_ack_create()); } return GRPC_CHTTP2_PARSE_OK; } @@ -220,11 +223,11 @@ grpc_chttp2_parse_error grpc_chttp2_settings_parser_parse( } if (parser->id == GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE && parser->incoming_settings[parser->id] != parser->value) { - state->initial_window_update = + transport_parsing->initial_window_update = (gpr_int64)parser->value - parser->incoming_settings[parser->id]; gpr_log(GPR_DEBUG, "adding %d for initial_window change", - (int)state->initial_window_update); + (int)transport_parsing->initial_window_update); } parser->incoming_settings[parser->id] = parser->value; if (grpc_http_trace) { diff --git a/src/core/transport/chttp2/frame_settings.h b/src/core/transport/chttp2/frame_settings.h index 18765631a6..0ac68a9fa8 100644 --- a/src/core/transport/chttp2/frame_settings.h +++ b/src/core/transport/chttp2/frame_settings.h @@ -94,6 +94,7 @@ grpc_chttp2_parse_error grpc_chttp2_settings_parser_begin_frame( grpc_chttp2_settings_parser *parser, gpr_uint32 length, gpr_uint8 flags, gpr_uint32 *settings); grpc_chttp2_parse_error grpc_chttp2_settings_parser_parse( - void *parser, grpc_chttp2_parse_state *state, gpr_slice slice, int is_last); + void *parser, grpc_chttp2_transport_parsing *transport_parsing, + grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last); -#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_FRAME_SETTINGS_H */ +#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_FRAME_SETTINGS_H */ diff --git a/src/core/transport/chttp2/frame_window_update.c b/src/core/transport/chttp2/frame_window_update.c index a8db7d6653..b817df7745 100644 --- a/src/core/transport/chttp2/frame_window_update.c +++ b/src/core/transport/chttp2/frame_window_update.c @@ -32,6 +32,7 @@ */ #include "src/core/transport/chttp2/frame_window_update.h" +#include "src/core/transport/chttp2/internal.h" #include <grpc/support/log.h> @@ -73,15 +74,15 @@ grpc_chttp2_parse_error grpc_chttp2_window_update_parser_begin_frame( } grpc_chttp2_parse_error grpc_chttp2_window_update_parser_parse( - void *parser, grpc_chttp2_parse_state *state, gpr_slice slice, - int is_last) { + void *parser, grpc_chttp2_transport_parsing *transport_parsing, + grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last) { gpr_uint8 *const beg = GPR_SLICE_START_PTR(slice); gpr_uint8 *const end = GPR_SLICE_END_PTR(slice); gpr_uint8 *cur = beg; grpc_chttp2_window_update_parser *p = parser; while (p->byte != 4 && cur != end) { - p->amount |= ((gpr_uint32) * cur) << (8 * (3 - p->byte)); + p->amount |= ((gpr_uint32)*cur) << (8 * (3 - p->byte)); cur++; p->byte++; } @@ -92,7 +93,21 @@ grpc_chttp2_parse_error grpc_chttp2_window_update_parser_parse( return GRPC_CHTTP2_CONNECTION_ERROR; } GPR_ASSERT(is_last); - state->window_update = p->amount; + + if (transport_parsing->incoming_stream_id) { + if (stream_parsing) { + GRPC_CHTTP2_FLOWCTL_TRACE_STREAM("update", transport_parsing, + stream_parsing, outgoing_window_update, + p->amount); + stream_parsing->outgoing_window_update += p->amount; + grpc_chttp2_list_add_parsing_seen_stream(transport_parsing, + stream_parsing); + } + } else { + GRPC_CHTTP2_FLOWCTL_TRACE_TRANSPORT("update", transport_parsing, + outgoing_window_update, p->amount); + transport_parsing->outgoing_window_update += p->amount; + } } return GRPC_CHTTP2_PARSE_OK; diff --git a/src/core/transport/chttp2/frame_window_update.h b/src/core/transport/chttp2/frame_window_update.h index 85475a8f9e..deba801d00 100644 --- a/src/core/transport/chttp2/frame_window_update.h +++ b/src/core/transport/chttp2/frame_window_update.h @@ -50,6 +50,7 @@ grpc_chttp2_parse_error grpc_chttp2_window_update_parser_begin_frame( grpc_chttp2_window_update_parser *parser, gpr_uint32 length, gpr_uint8 flags); grpc_chttp2_parse_error grpc_chttp2_window_update_parser_parse( - void *parser, grpc_chttp2_parse_state *state, gpr_slice slice, int is_last); + void *parser, grpc_chttp2_transport_parsing *transport_parsing, + grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last); -#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_FRAME_WINDOW_UPDATE_H */ +#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_FRAME_WINDOW_UPDATE_H */ diff --git a/src/core/transport/chttp2/gen_hpack_tables.c b/src/core/transport/chttp2/gen_hpack_tables.c index bdaa3cf094..555f1e71c5 100644 --- a/src/core/transport/chttp2/gen_hpack_tables.c +++ b/src/core/transport/chttp2/gen_hpack_tables.c @@ -55,19 +55,15 @@ typedef struct { unsigned char index; } spec; -static const spec fields[] = {{"INDEXED_FIELD", 0X80, 1, 1}, - {"INDEXED_FIELD_X", 0X80, 1, 2}, - {"LITHDR_INCIDX", 0X40, 2, 1}, - {"LITHDR_INCIDX_X", 0X40, 2, 2}, - {"LITHDR_INCIDX_V", 0X40, 2, 0}, - {"LITHDR_NOTIDX", 0X00, 4, 1}, - {"LITHDR_NOTIDX_X", 0X00, 4, 2}, - {"LITHDR_NOTIDX_V", 0X00, 4, 0}, - {"LITHDR_NVRIDX", 0X10, 4, 1}, - {"LITHDR_NVRIDX_X", 0X10, 4, 2}, - {"LITHDR_NVRIDX_V", 0X10, 4, 0}, - {"MAX_TBL_SIZE", 0X20, 3, 1}, - {"MAX_TBL_SIZE_X", 0X20, 3, 2}, }; +static const spec fields[] = { + {"INDEXED_FIELD", 0X80, 1, 1}, {"INDEXED_FIELD_X", 0X80, 1, 2}, + {"LITHDR_INCIDX", 0X40, 2, 1}, {"LITHDR_INCIDX_X", 0X40, 2, 2}, + {"LITHDR_INCIDX_V", 0X40, 2, 0}, {"LITHDR_NOTIDX", 0X00, 4, 1}, + {"LITHDR_NOTIDX_X", 0X00, 4, 2}, {"LITHDR_NOTIDX_V", 0X00, 4, 0}, + {"LITHDR_NVRIDX", 0X10, 4, 1}, {"LITHDR_NVRIDX_X", 0X10, 4, 2}, + {"LITHDR_NVRIDX_V", 0X10, 4, 0}, {"MAX_TBL_SIZE", 0X20, 3, 1}, + {"MAX_TBL_SIZE_X", 0X20, 3, 2}, +}; static const int num_fields = sizeof(fields) / sizeof(*fields); @@ -129,13 +125,9 @@ static void generate_first_byte_lut(void) { #define MAXHUFFSTATES 1024 /* represents a set of symbols as an array of booleans indicating inclusion */ -typedef struct { - char included[GRPC_CHTTP2_NUM_HUFFSYMS]; -} symset; +typedef struct { char included[GRPC_CHTTP2_NUM_HUFFSYMS]; } symset; /* represents a lookup table indexed by a nibble */ -typedef struct { - int values[16]; -} nibblelut; +typedef struct { int values[16]; } nibblelut; /* returns a symset that includes all possible symbols */ static symset symset_all(void) { @@ -268,8 +260,7 @@ static void build_dec_tbl(int state, int nibble, int nibbits, unsigned bitofs, /* recurse down for this bit */ build_dec_tbl(state, (nibble << 1) | bit, nibbits + 1, bitofs + 1, emit, nextsyms); - next: - ; + next:; } } diff --git a/src/core/transport/chttp2/hpack_parser.c b/src/core/transport/chttp2/hpack_parser.c index a489543868..b8ab664db5 100644 --- a/src/core/transport/chttp2/hpack_parser.c +++ b/src/core/transport/chttp2/hpack_parser.c @@ -32,6 +32,7 @@ */ #include "src/core/transport/chttp2/hpack_parser.h" +#include "src/core/transport/chttp2/internal.h" #include <stddef.h> #include <string.h> @@ -149,10 +150,12 @@ typedef enum { /* jump table of parse state functions -- order must match first_byte_type above */ static const grpc_chttp2_hpack_parser_state first_byte_action[] = { - parse_indexed_field, parse_indexed_field_x, parse_lithdr_incidx, - parse_lithdr_incidx_x, parse_lithdr_incidx_v, parse_lithdr_notidx, - parse_lithdr_notidx_x, parse_lithdr_notidx_v, parse_lithdr_nvridx, - parse_lithdr_nvridx_x, parse_lithdr_nvridx_v, parse_max_tbl_size, + parse_indexed_field, parse_indexed_field_x, + parse_lithdr_incidx, parse_lithdr_incidx_x, + parse_lithdr_incidx_v, parse_lithdr_notidx, + parse_lithdr_notidx_x, parse_lithdr_notidx_v, + parse_lithdr_nvridx, parse_lithdr_nvridx_x, + parse_lithdr_nvridx_v, parse_max_tbl_size, parse_max_tbl_size_x, parse_error}; /* indexes the first byte to a parse state function - generated by @@ -221,7 +224,8 @@ static const gpr_uint8 first_byte_lut[256] = { INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD, - INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD_X, }; + INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD, INDEXED_FIELD_X, +}; /* state table for huffman decoding: given a state, gives an index/16 into next_sub_tbl. Taking that index and adding the value of the nibble being @@ -241,7 +245,8 @@ static const gpr_uint8 next_tbl[256] = { 38, 1, 1, 1, 1, 1, 1, 1, 15, 2, 2, 2, 2, 26, 3, 3, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 7, 3, 3, 3, 40, 2, 41, 1, 1, 1, 42, 43, 1, 1, 44, 1, 1, 1, 1, 15, 2, 2, 2, 2, 2, 2, - 3, 3, 3, 45, 46, 1, 1, 2, 2, 2, 35, 3, 3, 18, 47, 2, }; + 3, 3, 3, 45, 46, 1, 1, 2, 2, 2, 35, 3, 3, 18, 47, 2, +}; /* next state, based upon current state and the current nibble: see above. generated by gen_hpack_tables.c */ static const gpr_int16 next_sub_tbl[48 * 16] = { @@ -296,7 +301,8 @@ static const gpr_int16 next_sub_tbl[48 * 16] = { 4, 8, 4, 8, 4, 8, 4, 8, 4, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 255, }; + 0, 0, 255, +}; /* emission table: indexed like next_tbl, ultimately gives the byte to be emitted, or -1 for no byte, or 256 for end of stream @@ -319,7 +325,8 @@ static const gpr_uint16 emit_tbl[256] = { 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 0, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, - 248, }; + 248, +}; /* generated by gen_hpack_tables.c */ static const gpr_int16 emit_sub_tbl[249 * 16] = { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, @@ -587,7 +594,8 @@ static const gpr_int16 emit_sub_tbl[249 * 16] = { 251, 251, 252, 252, 253, 253, 254, 254, 2, 3, 4, 5, 6, 7, 8, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 27, 28, 29, 30, 31, 127, 220, 249, -1, 10, 10, 10, 10, 13, 13, 13, - 13, 22, 22, 22, 22, 256, 256, 256, 256, }; + 13, 22, 22, 22, 22, 256, 256, 256, 256, +}; static const gpr_uint8 inverse_base64[256] = { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, @@ -607,7 +615,8 @@ static const gpr_uint8 inverse_base64[256] = { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, - 255, }; + 255, +}; /* emission helpers */ static void on_hdr(grpc_chttp2_hpack_parser *p, grpc_mdelem *md, @@ -945,7 +954,7 @@ static int parse_value1(grpc_chttp2_hpack_parser *p, const gpr_uint8 *cur, return 1; } - *p->parsing.value += (((gpr_uint32) * cur) & 0x7f) << 7; + *p->parsing.value += (((gpr_uint32)*cur) & 0x7f) << 7; if ((*cur) & 0x80) { return parse_value2(p, cur + 1, end); @@ -963,7 +972,7 @@ static int parse_value2(grpc_chttp2_hpack_parser *p, const gpr_uint8 *cur, return 1; } - *p->parsing.value += (((gpr_uint32) * cur) & 0x7f) << 14; + *p->parsing.value += (((gpr_uint32)*cur) & 0x7f) << 14; if ((*cur) & 0x80) { return parse_value3(p, cur + 1, end); @@ -981,7 +990,7 @@ static int parse_value3(grpc_chttp2_hpack_parser *p, const gpr_uint8 *cur, return 1; } - *p->parsing.value += (((gpr_uint32) * cur) & 0x7f) << 21; + *p->parsing.value += (((gpr_uint32)*cur) & 0x7f) << 21; if ((*cur) & 0x80) { return parse_value4(p, cur + 1, end); @@ -1369,8 +1378,8 @@ int grpc_chttp2_hpack_parser_parse(grpc_chttp2_hpack_parser *p, } grpc_chttp2_parse_error grpc_chttp2_header_parser_parse( - void *hpack_parser, grpc_chttp2_parse_state *state, gpr_slice slice, - int is_last) { + void *hpack_parser, grpc_chttp2_transport_parsing *transport_parsing, + grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last) { grpc_chttp2_hpack_parser *parser = hpack_parser; if (!grpc_chttp2_hpack_parser_parse(parser, GPR_SLICE_START_PTR(slice), GPR_SLICE_END_PTR(slice))) { @@ -1382,9 +1391,16 @@ grpc_chttp2_parse_error grpc_chttp2_header_parser_parse( "end of header frame not aligned with a hpack record boundary"); return GRPC_CHTTP2_CONNECTION_ERROR; } - state->metadata_boundary = parser->is_boundary; - state->end_of_stream = parser->is_eof; - state->need_flush_reads = parser->is_eof; + if (parser->is_boundary) { + grpc_chttp2_incoming_metadata_buffer_place_metadata_batch_into( + &stream_parsing->incoming_metadata, + &stream_parsing->data_parser.incoming_sopb); + grpc_chttp2_list_add_parsing_seen_stream(transport_parsing, + stream_parsing); + } + if (parser->is_eof) { + stream_parsing->received_close = 1; + } parser->on_header = on_header_not_set; parser->on_header_user_data = NULL; parser->is_boundary = 0xde; diff --git a/src/core/transport/chttp2/hpack_parser.h b/src/core/transport/chttp2/hpack_parser.h index bfc06b3980..c1768d9d5d 100644 --- a/src/core/transport/chttp2/hpack_parser.h +++ b/src/core/transport/chttp2/hpack_parser.h @@ -107,7 +107,7 @@ int grpc_chttp2_hpack_parser_parse(grpc_chttp2_hpack_parser *p, /* wraps grpc_chttp2_hpack_parser_parse to provide a frame level parser for the transport */ grpc_chttp2_parse_error grpc_chttp2_header_parser_parse( - void *hpack_parser, grpc_chttp2_parse_state *state, gpr_slice slice, - int is_last); + void *hpack_parser, grpc_chttp2_transport_parsing *transport_parsing, + grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last); -#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_HPACK_PARSER_H */ +#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_HPACK_PARSER_H */ diff --git a/src/core/transport/chttp2/hpack_table.c b/src/core/transport/chttp2/hpack_table.c index 2c0159260f..372e71d68f 100644 --- a/src/core/transport/chttp2/hpack_table.c +++ b/src/core/transport/chttp2/hpack_table.c @@ -43,68 +43,69 @@ static struct { const char *key; const char *value; } static_table[] = { - /* 0: */ {NULL, NULL}, - /* 1: */ {":authority", ""}, - /* 2: */ {":method", "GET"}, - /* 3: */ {":method", "POST"}, - /* 4: */ {":path", "/"}, - /* 5: */ {":path", "/index.html"}, - /* 6: */ {":scheme", "http"}, - /* 7: */ {":scheme", "https"}, - /* 8: */ {":status", "200"}, - /* 9: */ {":status", "204"}, - /* 10: */ {":status", "206"}, - /* 11: */ {":status", "304"}, - /* 12: */ {":status", "400"}, - /* 13: */ {":status", "404"}, - /* 14: */ {":status", "500"}, - /* 15: */ {"accept-charset", ""}, - /* 16: */ {"accept-encoding", "gzip, deflate"}, - /* 17: */ {"accept-language", ""}, - /* 18: */ {"accept-ranges", ""}, - /* 19: */ {"accept", ""}, - /* 20: */ {"access-control-allow-origin", ""}, - /* 21: */ {"age", ""}, - /* 22: */ {"allow", ""}, - /* 23: */ {"authorization", ""}, - /* 24: */ {"cache-control", ""}, - /* 25: */ {"content-disposition", ""}, - /* 26: */ {"content-encoding", ""}, - /* 27: */ {"content-language", ""}, - /* 28: */ {"content-length", ""}, - /* 29: */ {"content-location", ""}, - /* 30: */ {"content-range", ""}, - /* 31: */ {"content-type", ""}, - /* 32: */ {"cookie", ""}, - /* 33: */ {"date", ""}, - /* 34: */ {"etag", ""}, - /* 35: */ {"expect", ""}, - /* 36: */ {"expires", ""}, - /* 37: */ {"from", ""}, - /* 38: */ {"host", ""}, - /* 39: */ {"if-match", ""}, - /* 40: */ {"if-modified-since", ""}, - /* 41: */ {"if-none-match", ""}, - /* 42: */ {"if-range", ""}, - /* 43: */ {"if-unmodified-since", ""}, - /* 44: */ {"last-modified", ""}, - /* 45: */ {"link", ""}, - /* 46: */ {"location", ""}, - /* 47: */ {"max-forwards", ""}, - /* 48: */ {"proxy-authenticate", ""}, - /* 49: */ {"proxy-authorization", ""}, - /* 50: */ {"range", ""}, - /* 51: */ {"referer", ""}, - /* 52: */ {"refresh", ""}, - /* 53: */ {"retry-after", ""}, - /* 54: */ {"server", ""}, - /* 55: */ {"set-cookie", ""}, - /* 56: */ {"strict-transport-security", ""}, - /* 57: */ {"transfer-encoding", ""}, - /* 58: */ {"user-agent", ""}, - /* 59: */ {"vary", ""}, - /* 60: */ {"via", ""}, - /* 61: */ {"www-authenticate", ""}, }; + /* 0: */ {NULL, NULL}, + /* 1: */ {":authority", ""}, + /* 2: */ {":method", "GET"}, + /* 3: */ {":method", "POST"}, + /* 4: */ {":path", "/"}, + /* 5: */ {":path", "/index.html"}, + /* 6: */ {":scheme", "http"}, + /* 7: */ {":scheme", "https"}, + /* 8: */ {":status", "200"}, + /* 9: */ {":status", "204"}, + /* 10: */ {":status", "206"}, + /* 11: */ {":status", "304"}, + /* 12: */ {":status", "400"}, + /* 13: */ {":status", "404"}, + /* 14: */ {":status", "500"}, + /* 15: */ {"accept-charset", ""}, + /* 16: */ {"accept-encoding", "gzip, deflate"}, + /* 17: */ {"accept-language", ""}, + /* 18: */ {"accept-ranges", ""}, + /* 19: */ {"accept", ""}, + /* 20: */ {"access-control-allow-origin", ""}, + /* 21: */ {"age", ""}, + /* 22: */ {"allow", ""}, + /* 23: */ {"authorization", ""}, + /* 24: */ {"cache-control", ""}, + /* 25: */ {"content-disposition", ""}, + /* 26: */ {"content-encoding", ""}, + /* 27: */ {"content-language", ""}, + /* 28: */ {"content-length", ""}, + /* 29: */ {"content-location", ""}, + /* 30: */ {"content-range", ""}, + /* 31: */ {"content-type", ""}, + /* 32: */ {"cookie", ""}, + /* 33: */ {"date", ""}, + /* 34: */ {"etag", ""}, + /* 35: */ {"expect", ""}, + /* 36: */ {"expires", ""}, + /* 37: */ {"from", ""}, + /* 38: */ {"host", ""}, + /* 39: */ {"if-match", ""}, + /* 40: */ {"if-modified-since", ""}, + /* 41: */ {"if-none-match", ""}, + /* 42: */ {"if-range", ""}, + /* 43: */ {"if-unmodified-since", ""}, + /* 44: */ {"last-modified", ""}, + /* 45: */ {"link", ""}, + /* 46: */ {"location", ""}, + /* 47: */ {"max-forwards", ""}, + /* 48: */ {"proxy-authenticate", ""}, + /* 49: */ {"proxy-authorization", ""}, + /* 50: */ {"range", ""}, + /* 51: */ {"referer", ""}, + /* 52: */ {"refresh", ""}, + /* 53: */ {"retry-after", ""}, + /* 54: */ {"server", ""}, + /* 55: */ {"set-cookie", ""}, + /* 56: */ {"strict-transport-security", ""}, + /* 57: */ {"transfer-encoding", ""}, + /* 58: */ {"user-agent", ""}, + /* 59: */ {"vary", ""}, + /* 60: */ {"via", ""}, + /* 61: */ {"www-authenticate", ""}, +}; void grpc_chttp2_hptbl_init(grpc_chttp2_hptbl *tbl, grpc_mdctx *mdctx) { size_t i; diff --git a/src/core/transport/chttp2/hpack_table.h b/src/core/transport/chttp2/hpack_table.h index d3bf41bbc5..4f882e2e03 100644 --- a/src/core/transport/chttp2/hpack_table.h +++ b/src/core/transport/chttp2/hpack_table.h @@ -94,4 +94,4 @@ typedef struct { grpc_chttp2_hptbl_find_result grpc_chttp2_hptbl_find( const grpc_chttp2_hptbl *tbl, grpc_mdelem *md); -#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_HPACK_TABLE_H */ +#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_HPACK_TABLE_H */ diff --git a/src/core/transport/chttp2/http2_errors.h b/src/core/transport/chttp2/http2_errors.h index 4ab2ec0220..a4f309e056 100644 --- a/src/core/transport/chttp2/http2_errors.h +++ b/src/core/transport/chttp2/http2_errors.h @@ -53,4 +53,4 @@ typedef enum { GRPC_CHTTP2__ERROR_DO_NOT_USE = -1 } grpc_chttp2_error_code; -#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_HTTP2_ERRORS_H */ +#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_HTTP2_ERRORS_H */ diff --git a/src/core/transport/chttp2/huffsyms.c b/src/core/transport/chttp2/huffsyms.c index 0a926e7e35..6f5cf6a2a9 100644 --- a/src/core/transport/chttp2/huffsyms.c +++ b/src/core/transport/chttp2/huffsyms.c @@ -37,260 +37,69 @@ command: :%s/.* \([0-9a-f]\+\) \[ *\([0-9]\+\)\]/{0x\1, \2},/g */ const grpc_chttp2_huffsym grpc_chttp2_huffsyms[GRPC_CHTTP2_NUM_HUFFSYMS] = { - {0x1ff8, 13}, - {0x7fffd8, 23}, - {0xfffffe2, 28}, - {0xfffffe3, 28}, - {0xfffffe4, 28}, - {0xfffffe5, 28}, - {0xfffffe6, 28}, - {0xfffffe7, 28}, - {0xfffffe8, 28}, - {0xffffea, 24}, - {0x3ffffffc, 30}, - {0xfffffe9, 28}, - {0xfffffea, 28}, - {0x3ffffffd, 30}, - {0xfffffeb, 28}, - {0xfffffec, 28}, - {0xfffffed, 28}, - {0xfffffee, 28}, - {0xfffffef, 28}, - {0xffffff0, 28}, - {0xffffff1, 28}, - {0xffffff2, 28}, - {0x3ffffffe, 30}, - {0xffffff3, 28}, - {0xffffff4, 28}, - {0xffffff5, 28}, - {0xffffff6, 28}, - {0xffffff7, 28}, - {0xffffff8, 28}, - {0xffffff9, 28}, - {0xffffffa, 28}, - {0xffffffb, 28}, - {0x14, 6}, - {0x3f8, 10}, - {0x3f9, 10}, - {0xffa, 12}, - {0x1ff9, 13}, - {0x15, 6}, - {0xf8, 8}, - {0x7fa, 11}, - {0x3fa, 10}, - {0x3fb, 10}, - {0xf9, 8}, - {0x7fb, 11}, - {0xfa, 8}, - {0x16, 6}, - {0x17, 6}, - {0x18, 6}, - {0x0, 5}, - {0x1, 5}, - {0x2, 5}, - {0x19, 6}, - {0x1a, 6}, - {0x1b, 6}, - {0x1c, 6}, - {0x1d, 6}, - {0x1e, 6}, - {0x1f, 6}, - {0x5c, 7}, - {0xfb, 8}, - {0x7ffc, 15}, - {0x20, 6}, - {0xffb, 12}, - {0x3fc, 10}, - {0x1ffa, 13}, - {0x21, 6}, - {0x5d, 7}, - {0x5e, 7}, - {0x5f, 7}, - {0x60, 7}, - {0x61, 7}, - {0x62, 7}, - {0x63, 7}, - {0x64, 7}, - {0x65, 7}, - {0x66, 7}, - {0x67, 7}, - {0x68, 7}, - {0x69, 7}, - {0x6a, 7}, - {0x6b, 7}, - {0x6c, 7}, - {0x6d, 7}, - {0x6e, 7}, - {0x6f, 7}, - {0x70, 7}, - {0x71, 7}, - {0x72, 7}, - {0xfc, 8}, - {0x73, 7}, - {0xfd, 8}, - {0x1ffb, 13}, - {0x7fff0, 19}, - {0x1ffc, 13}, - {0x3ffc, 14}, - {0x22, 6}, - {0x7ffd, 15}, - {0x3, 5}, - {0x23, 6}, - {0x4, 5}, - {0x24, 6}, - {0x5, 5}, - {0x25, 6}, - {0x26, 6}, - {0x27, 6}, - {0x6, 5}, - {0x74, 7}, - {0x75, 7}, - {0x28, 6}, - {0x29, 6}, - {0x2a, 6}, - {0x7, 5}, - {0x2b, 6}, - {0x76, 7}, - {0x2c, 6}, - {0x8, 5}, - {0x9, 5}, - {0x2d, 6}, - {0x77, 7}, - {0x78, 7}, - {0x79, 7}, - {0x7a, 7}, - {0x7b, 7}, - {0x7ffe, 15}, - {0x7fc, 11}, - {0x3ffd, 14}, - {0x1ffd, 13}, - {0xffffffc, 28}, - {0xfffe6, 20}, - {0x3fffd2, 22}, - {0xfffe7, 20}, - {0xfffe8, 20}, - {0x3fffd3, 22}, - {0x3fffd4, 22}, - {0x3fffd5, 22}, - {0x7fffd9, 23}, - {0x3fffd6, 22}, - {0x7fffda, 23}, - {0x7fffdb, 23}, - {0x7fffdc, 23}, - {0x7fffdd, 23}, - {0x7fffde, 23}, - {0xffffeb, 24}, - {0x7fffdf, 23}, - {0xffffec, 24}, - {0xffffed, 24}, - {0x3fffd7, 22}, - {0x7fffe0, 23}, - {0xffffee, 24}, - {0x7fffe1, 23}, - {0x7fffe2, 23}, - {0x7fffe3, 23}, - {0x7fffe4, 23}, - {0x1fffdc, 21}, - {0x3fffd8, 22}, - {0x7fffe5, 23}, - {0x3fffd9, 22}, - {0x7fffe6, 23}, - {0x7fffe7, 23}, - {0xffffef, 24}, - {0x3fffda, 22}, - {0x1fffdd, 21}, - {0xfffe9, 20}, - {0x3fffdb, 22}, - {0x3fffdc, 22}, - {0x7fffe8, 23}, - {0x7fffe9, 23}, - {0x1fffde, 21}, - {0x7fffea, 23}, - {0x3fffdd, 22}, - {0x3fffde, 22}, - {0xfffff0, 24}, - {0x1fffdf, 21}, - {0x3fffdf, 22}, - {0x7fffeb, 23}, - {0x7fffec, 23}, - {0x1fffe0, 21}, - {0x1fffe1, 21}, - {0x3fffe0, 22}, - {0x1fffe2, 21}, - {0x7fffed, 23}, - {0x3fffe1, 22}, - {0x7fffee, 23}, - {0x7fffef, 23}, - {0xfffea, 20}, - {0x3fffe2, 22}, - {0x3fffe3, 22}, - {0x3fffe4, 22}, - {0x7ffff0, 23}, - {0x3fffe5, 22}, - {0x3fffe6, 22}, - {0x7ffff1, 23}, - {0x3ffffe0, 26}, - {0x3ffffe1, 26}, - {0xfffeb, 20}, - {0x7fff1, 19}, - {0x3fffe7, 22}, - {0x7ffff2, 23}, - {0x3fffe8, 22}, - {0x1ffffec, 25}, - {0x3ffffe2, 26}, - {0x3ffffe3, 26}, - {0x3ffffe4, 26}, - {0x7ffffde, 27}, - {0x7ffffdf, 27}, - {0x3ffffe5, 26}, - {0xfffff1, 24}, - {0x1ffffed, 25}, - {0x7fff2, 19}, - {0x1fffe3, 21}, - {0x3ffffe6, 26}, - {0x7ffffe0, 27}, - {0x7ffffe1, 27}, - {0x3ffffe7, 26}, - {0x7ffffe2, 27}, - {0xfffff2, 24}, - {0x1fffe4, 21}, - {0x1fffe5, 21}, - {0x3ffffe8, 26}, - {0x3ffffe9, 26}, - {0xffffffd, 28}, - {0x7ffffe3, 27}, - {0x7ffffe4, 27}, - {0x7ffffe5, 27}, - {0xfffec, 20}, - {0xfffff3, 24}, - {0xfffed, 20}, - {0x1fffe6, 21}, - {0x3fffe9, 22}, - {0x1fffe7, 21}, - {0x1fffe8, 21}, - {0x7ffff3, 23}, - {0x3fffea, 22}, - {0x3fffeb, 22}, - {0x1ffffee, 25}, - {0x1ffffef, 25}, - {0xfffff4, 24}, - {0xfffff5, 24}, - {0x3ffffea, 26}, - {0x7ffff4, 23}, - {0x3ffffeb, 26}, - {0x7ffffe6, 27}, - {0x3ffffec, 26}, - {0x3ffffed, 26}, - {0x7ffffe7, 27}, - {0x7ffffe8, 27}, - {0x7ffffe9, 27}, - {0x7ffffea, 27}, - {0x7ffffeb, 27}, - {0xffffffe, 28}, - {0x7ffffec, 27}, - {0x7ffffed, 27}, - {0x7ffffee, 27}, - {0x7ffffef, 27}, - {0x7fffff0, 27}, - {0x3ffffee, 26}, - {0x3fffffff, 30}, }; + {0x1ff8, 13}, {0x7fffd8, 23}, {0xfffffe2, 28}, {0xfffffe3, 28}, + {0xfffffe4, 28}, {0xfffffe5, 28}, {0xfffffe6, 28}, {0xfffffe7, 28}, + {0xfffffe8, 28}, {0xffffea, 24}, {0x3ffffffc, 30}, {0xfffffe9, 28}, + {0xfffffea, 28}, {0x3ffffffd, 30}, {0xfffffeb, 28}, {0xfffffec, 28}, + {0xfffffed, 28}, {0xfffffee, 28}, {0xfffffef, 28}, {0xffffff0, 28}, + {0xffffff1, 28}, {0xffffff2, 28}, {0x3ffffffe, 30}, {0xffffff3, 28}, + {0xffffff4, 28}, {0xffffff5, 28}, {0xffffff6, 28}, {0xffffff7, 28}, + {0xffffff8, 28}, {0xffffff9, 28}, {0xffffffa, 28}, {0xffffffb, 28}, + {0x14, 6}, {0x3f8, 10}, {0x3f9, 10}, {0xffa, 12}, + {0x1ff9, 13}, {0x15, 6}, {0xf8, 8}, {0x7fa, 11}, + {0x3fa, 10}, {0x3fb, 10}, {0xf9, 8}, {0x7fb, 11}, + {0xfa, 8}, {0x16, 6}, {0x17, 6}, {0x18, 6}, + {0x0, 5}, {0x1, 5}, {0x2, 5}, {0x19, 6}, + {0x1a, 6}, {0x1b, 6}, {0x1c, 6}, {0x1d, 6}, + {0x1e, 6}, {0x1f, 6}, {0x5c, 7}, {0xfb, 8}, + {0x7ffc, 15}, {0x20, 6}, {0xffb, 12}, {0x3fc, 10}, + {0x1ffa, 13}, {0x21, 6}, {0x5d, 7}, {0x5e, 7}, + {0x5f, 7}, {0x60, 7}, {0x61, 7}, {0x62, 7}, + {0x63, 7}, {0x64, 7}, {0x65, 7}, {0x66, 7}, + {0x67, 7}, {0x68, 7}, {0x69, 7}, {0x6a, 7}, + {0x6b, 7}, {0x6c, 7}, {0x6d, 7}, {0x6e, 7}, + {0x6f, 7}, {0x70, 7}, {0x71, 7}, {0x72, 7}, + {0xfc, 8}, {0x73, 7}, {0xfd, 8}, {0x1ffb, 13}, + {0x7fff0, 19}, {0x1ffc, 13}, {0x3ffc, 14}, {0x22, 6}, + {0x7ffd, 15}, {0x3, 5}, {0x23, 6}, {0x4, 5}, + {0x24, 6}, {0x5, 5}, {0x25, 6}, {0x26, 6}, + {0x27, 6}, {0x6, 5}, {0x74, 7}, {0x75, 7}, + {0x28, 6}, {0x29, 6}, {0x2a, 6}, {0x7, 5}, + {0x2b, 6}, {0x76, 7}, {0x2c, 6}, {0x8, 5}, + {0x9, 5}, {0x2d, 6}, {0x77, 7}, {0x78, 7}, + {0x79, 7}, {0x7a, 7}, {0x7b, 7}, {0x7ffe, 15}, + {0x7fc, 11}, {0x3ffd, 14}, {0x1ffd, 13}, {0xffffffc, 28}, + {0xfffe6, 20}, {0x3fffd2, 22}, {0xfffe7, 20}, {0xfffe8, 20}, + {0x3fffd3, 22}, {0x3fffd4, 22}, {0x3fffd5, 22}, {0x7fffd9, 23}, + {0x3fffd6, 22}, {0x7fffda, 23}, {0x7fffdb, 23}, {0x7fffdc, 23}, + {0x7fffdd, 23}, {0x7fffde, 23}, {0xffffeb, 24}, {0x7fffdf, 23}, + {0xffffec, 24}, {0xffffed, 24}, {0x3fffd7, 22}, {0x7fffe0, 23}, + {0xffffee, 24}, {0x7fffe1, 23}, {0x7fffe2, 23}, {0x7fffe3, 23}, + {0x7fffe4, 23}, {0x1fffdc, 21}, {0x3fffd8, 22}, {0x7fffe5, 23}, + {0x3fffd9, 22}, {0x7fffe6, 23}, {0x7fffe7, 23}, {0xffffef, 24}, + {0x3fffda, 22}, {0x1fffdd, 21}, {0xfffe9, 20}, {0x3fffdb, 22}, + {0x3fffdc, 22}, {0x7fffe8, 23}, {0x7fffe9, 23}, {0x1fffde, 21}, + {0x7fffea, 23}, {0x3fffdd, 22}, {0x3fffde, 22}, {0xfffff0, 24}, + {0x1fffdf, 21}, {0x3fffdf, 22}, {0x7fffeb, 23}, {0x7fffec, 23}, + {0x1fffe0, 21}, {0x1fffe1, 21}, {0x3fffe0, 22}, {0x1fffe2, 21}, + {0x7fffed, 23}, {0x3fffe1, 22}, {0x7fffee, 23}, {0x7fffef, 23}, + {0xfffea, 20}, {0x3fffe2, 22}, {0x3fffe3, 22}, {0x3fffe4, 22}, + {0x7ffff0, 23}, {0x3fffe5, 22}, {0x3fffe6, 22}, {0x7ffff1, 23}, + {0x3ffffe0, 26}, {0x3ffffe1, 26}, {0xfffeb, 20}, {0x7fff1, 19}, + {0x3fffe7, 22}, {0x7ffff2, 23}, {0x3fffe8, 22}, {0x1ffffec, 25}, + {0x3ffffe2, 26}, {0x3ffffe3, 26}, {0x3ffffe4, 26}, {0x7ffffde, 27}, + {0x7ffffdf, 27}, {0x3ffffe5, 26}, {0xfffff1, 24}, {0x1ffffed, 25}, + {0x7fff2, 19}, {0x1fffe3, 21}, {0x3ffffe6, 26}, {0x7ffffe0, 27}, + {0x7ffffe1, 27}, {0x3ffffe7, 26}, {0x7ffffe2, 27}, {0xfffff2, 24}, + {0x1fffe4, 21}, {0x1fffe5, 21}, {0x3ffffe8, 26}, {0x3ffffe9, 26}, + {0xffffffd, 28}, {0x7ffffe3, 27}, {0x7ffffe4, 27}, {0x7ffffe5, 27}, + {0xfffec, 20}, {0xfffff3, 24}, {0xfffed, 20}, {0x1fffe6, 21}, + {0x3fffe9, 22}, {0x1fffe7, 21}, {0x1fffe8, 21}, {0x7ffff3, 23}, + {0x3fffea, 22}, {0x3fffeb, 22}, {0x1ffffee, 25}, {0x1ffffef, 25}, + {0xfffff4, 24}, {0xfffff5, 24}, {0x3ffffea, 26}, {0x7ffff4, 23}, + {0x3ffffeb, 26}, {0x7ffffe6, 27}, {0x3ffffec, 26}, {0x3ffffed, 26}, + {0x7ffffe7, 27}, {0x7ffffe8, 27}, {0x7ffffe9, 27}, {0x7ffffea, 27}, + {0x7ffffeb, 27}, {0xffffffe, 28}, {0x7ffffec, 27}, {0x7ffffed, 27}, + {0x7ffffee, 27}, {0x7ffffef, 27}, {0x7fffff0, 27}, {0x3ffffee, 26}, + {0x3fffffff, 30}, +}; diff --git a/src/core/transport/chttp2/huffsyms.h b/src/core/transport/chttp2/huffsyms.h index f9c1447966..a3cdba8235 100644 --- a/src/core/transport/chttp2/huffsyms.h +++ b/src/core/transport/chttp2/huffsyms.h @@ -45,4 +45,4 @@ typedef struct { extern const grpc_chttp2_huffsym grpc_chttp2_huffsyms[GRPC_CHTTP2_NUM_HUFFSYMS]; -#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_HUFFSYMS_H */ +#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_HUFFSYMS_H */ diff --git a/src/core/transport/chttp2/incoming_metadata.c b/src/core/transport/chttp2/incoming_metadata.c new file mode 100644 index 0000000000..ea5215b1bd --- /dev/null +++ b/src/core/transport/chttp2/incoming_metadata.c @@ -0,0 +1,207 @@ +/* + * + * 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 "src/core/transport/chttp2/incoming_metadata.h" + +#include <string.h> + +#include "src/core/transport/chttp2/internal.h" + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> + +void grpc_chttp2_incoming_metadata_buffer_init( + grpc_chttp2_incoming_metadata_buffer *buffer) { + buffer->deadline = gpr_inf_future; +} + +void grpc_chttp2_incoming_metadata_buffer_destroy( + grpc_chttp2_incoming_metadata_buffer *buffer) { + gpr_free(buffer->elems); +} + +void grpc_chttp2_incoming_metadata_buffer_add( + grpc_chttp2_incoming_metadata_buffer *buffer, grpc_mdelem *elem) { + if (buffer->capacity == buffer->count) { + buffer->capacity = GPR_MAX(8, 2 * buffer->capacity); + buffer->elems = + gpr_realloc(buffer->elems, sizeof(*buffer->elems) * buffer->capacity); + } + buffer->elems[buffer->count++].md = elem; +} + +void grpc_chttp2_incoming_metadata_buffer_set_deadline( + grpc_chttp2_incoming_metadata_buffer *buffer, gpr_timespec deadline) { + buffer->deadline = deadline; +} + +void grpc_chttp2_incoming_metadata_live_op_buffer_end( + grpc_chttp2_incoming_metadata_live_op_buffer *buffer) { + gpr_free(buffer->elems); + buffer->elems = NULL; +} + +void grpc_chttp2_incoming_metadata_buffer_place_metadata_batch_into( + grpc_chttp2_incoming_metadata_buffer *buffer, grpc_stream_op_buffer *sopb) { + grpc_metadata_batch b; + + b.list.head = NULL; + /* Store away the last element of the list, so that in patch_metadata_ops + we can reconstitute the list. + We can't do list building here as later incoming metadata may reallocate + the underlying array. */ + b.list.tail = (void *)(gpr_intptr)buffer->count; + b.garbage.head = b.garbage.tail = NULL; + b.deadline = buffer->deadline; + buffer->deadline = gpr_inf_future; + + grpc_sopb_add_metadata(sopb, b); +} + +void grpc_chttp2_incoming_metadata_buffer_swap( + grpc_chttp2_incoming_metadata_buffer *a, + grpc_chttp2_incoming_metadata_buffer *b) { + GPR_SWAP(grpc_chttp2_incoming_metadata_buffer, *a, *b); +} + +void grpc_incoming_metadata_buffer_move_to_referencing_sopb( + grpc_chttp2_incoming_metadata_buffer *src, + grpc_chttp2_incoming_metadata_buffer *dst, grpc_stream_op_buffer *sopb) { + size_t delta; + size_t i; + if (gpr_time_cmp(dst->deadline, gpr_inf_future) == 0) { + dst->deadline = src->deadline; + } else if (gpr_time_cmp(src->deadline, gpr_inf_future) != 0) { + dst->deadline = gpr_time_min(src->deadline, dst->deadline); + } + + if (src->count == 0) { + return; + } + if (dst->count == 0) { + grpc_chttp2_incoming_metadata_buffer_swap(src, dst); + return; + } + delta = dst->count; + if (dst->capacity < src->count + dst->count) { + dst->capacity = GPR_MAX(dst->capacity * 2, src->count + dst->count); + dst->elems = gpr_realloc(dst->elems, dst->capacity * sizeof(*dst->elems)); + } + memcpy(dst->elems + dst->count, src->elems, src->count * sizeof(*src->elems)); + dst->count += src->count; + for (i = 0; i < sopb->nops; i++) { + if (sopb->ops[i].type != GRPC_OP_METADATA) continue; + sopb->ops[i].data.metadata.list.tail = + (void *)(delta + (gpr_intptr)sopb->ops[i].data.metadata.list.tail); + } +} + +void grpc_chttp2_incoming_metadata_buffer_postprocess_sopb_and_begin_live_op( + grpc_chttp2_incoming_metadata_buffer *buffer, grpc_stream_op_buffer *sopb, + grpc_chttp2_incoming_metadata_live_op_buffer *live_op_buffer) { + grpc_stream_op *ops = sopb->ops; + size_t nops = sopb->nops; + size_t i; + size_t j; + size_t mdidx = 0; + size_t last_mdidx; + int found_metadata = 0; + + /* rework the array of metadata into a linked list, making use + of the breadcrumbs we left in metadata batches during + add_metadata_batch */ + for (i = 0; i < nops; i++) { + grpc_stream_op *op = &ops[i]; + if (op->type != GRPC_OP_METADATA) continue; + found_metadata = 1; + /* we left a breadcrumb indicating where the end of this list is, + and since we add sequentially, we know from the end of the last + segment where this segment begins */ + last_mdidx = (size_t)(gpr_intptr)(op->data.metadata.list.tail); + GPR_ASSERT(last_mdidx > mdidx); + GPR_ASSERT(last_mdidx <= buffer->count); + /* turn the array into a doubly linked list */ + op->data.metadata.list.head = &buffer->elems[mdidx]; + op->data.metadata.list.tail = &buffer->elems[last_mdidx - 1]; + for (j = mdidx + 1; j < last_mdidx; j++) { + buffer->elems[j].prev = &buffer->elems[j - 1]; + buffer->elems[j - 1].next = &buffer->elems[j]; + } + buffer->elems[mdidx].prev = NULL; + buffer->elems[last_mdidx - 1].next = NULL; + /* track where we're up to */ + mdidx = last_mdidx; + } + if (found_metadata) { + live_op_buffer->elems = buffer->elems; + if (mdidx != buffer->count) { + /* we have a partially read metadata batch still in incoming_metadata */ + size_t new_count = buffer->count - mdidx; + size_t copy_bytes = sizeof(*buffer->elems) * new_count; + GPR_ASSERT(mdidx < buffer->count); + buffer->elems = gpr_malloc(copy_bytes); + memcpy(live_op_buffer->elems + mdidx, buffer->elems, copy_bytes); + buffer->count = buffer->capacity = new_count; + } else { + buffer->elems = NULL; + buffer->count = 0; + buffer->capacity = 0; + } + } +} + +#if 0 +void grpc_chttp2_parsing_add_metadata_batch( + grpc_chttp2_transport_parsing *transport_parsing, + grpc_chttp2_stream_parsing *stream_parsing) { + grpc_metadata_batch b; + + b.list.head = NULL; + /* Store away the last element of the list, so that in patch_metadata_ops + we can reconstitute the list. + We can't do list building here as later incoming metadata may reallocate + the underlying array. */ + b.list.tail = (void *)(gpr_intptr)stream_parsing->incoming_metadata_count; + b.garbage.head = b.garbage.tail = NULL; + b.deadline = stream_parsing->incoming_deadline; + stream_parsing->incoming_deadline = gpr_inf_future; + + grpc_sopb_add_metadata(&stream_parsing->data_parser.incoming_sopb, b); +} +#endif + +#if 0 +static void patch_metadata_ops(grpc_chttp2_stream_global *stream_global, + grpc_chttp2_stream_parsing *stream_parsing) { +} +#endif diff --git a/src/core/transport/chttp2/incoming_metadata.h b/src/core/transport/chttp2/incoming_metadata.h new file mode 100644 index 0000000000..2f1de411ba --- /dev/null +++ b/src/core/transport/chttp2/incoming_metadata.h @@ -0,0 +1,80 @@ +/* + * + * 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. + * + */ + +#ifndef GRPC_INTERNAL_CORE_CHTTP2_INCOMING_METADATA_H +#define GRPC_INTERNAL_CORE_CHTTP2_INCOMING_METADATA_H + +#include "src/core/transport/transport.h" + +typedef struct { + grpc_linked_mdelem *elems; + size_t count; + size_t capacity; + gpr_timespec deadline; +} grpc_chttp2_incoming_metadata_buffer; + +typedef struct { + grpc_linked_mdelem *elems; +} grpc_chttp2_incoming_metadata_live_op_buffer; + +/** assumes everything initially zeroed */ +void grpc_chttp2_incoming_metadata_buffer_init( + grpc_chttp2_incoming_metadata_buffer *buffer); +void grpc_chttp2_incoming_metadata_buffer_destroy( + grpc_chttp2_incoming_metadata_buffer *buffer); +void grpc_chttp2_incoming_metadata_buffer_reset( + grpc_chttp2_incoming_metadata_buffer *buffer); + +void grpc_chttp2_incoming_metadata_buffer_add( + grpc_chttp2_incoming_metadata_buffer *buffer, grpc_mdelem *elem); +void grpc_chttp2_incoming_metadata_buffer_set_deadline( + grpc_chttp2_incoming_metadata_buffer *buffer, gpr_timespec deadline); + +/** extend sopb with a metadata batch; this must be post-processed by + grpc_chttp2_incoming_metadata_buffer_postprocess_sopb before being handed + out of the transport */ +void grpc_chttp2_incoming_metadata_buffer_place_metadata_batch_into( + grpc_chttp2_incoming_metadata_buffer *buffer, grpc_stream_op_buffer *sopb); + +void grpc_incoming_metadata_buffer_move_to_referencing_sopb( + grpc_chttp2_incoming_metadata_buffer *src, + grpc_chttp2_incoming_metadata_buffer *dst, grpc_stream_op_buffer *sopb); + +void grpc_chttp2_incoming_metadata_buffer_postprocess_sopb_and_begin_live_op( + grpc_chttp2_incoming_metadata_buffer *buffer, grpc_stream_op_buffer *sopb, + grpc_chttp2_incoming_metadata_live_op_buffer *live_op_buffer); + +void grpc_chttp2_incoming_metadata_live_op_buffer_end( + grpc_chttp2_incoming_metadata_live_op_buffer *live_op_buffer); + +#endif /* GRPC_INTERNAL_CORE_CHTTP2_INCOMING_METADATA_H */ diff --git a/src/core/transport/chttp2/internal.h b/src/core/transport/chttp2/internal.h new file mode 100644 index 0000000000..2b4dc5e6b8 --- /dev/null +++ b/src/core/transport/chttp2/internal.h @@ -0,0 +1,647 @@ +/* + * + * 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. + * + */ + +#ifndef GRPC_INTERNAL_CORE_CHTTP2_INTERNAL_H +#define GRPC_INTERNAL_CORE_CHTTP2_INTERNAL_H + +#include "src/core/transport/transport_impl.h" +#include "src/core/iomgr/endpoint.h" +#include "src/core/transport/chttp2/frame.h" +#include "src/core/transport/chttp2/frame_data.h" +#include "src/core/transport/chttp2/frame_goaway.h" +#include "src/core/transport/chttp2/frame_ping.h" +#include "src/core/transport/chttp2/frame_rst_stream.h" +#include "src/core/transport/chttp2/frame_settings.h" +#include "src/core/transport/chttp2/frame_window_update.h" +#include "src/core/transport/chttp2/hpack_parser.h" +#include "src/core/transport/chttp2/incoming_metadata.h" +#include "src/core/transport/chttp2/stream_encoder.h" +#include "src/core/transport/chttp2/stream_map.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_READ_WRITE_STATE_CHANGED, + GRPC_CHTTP2_LIST_WRITABLE, + GRPC_CHTTP2_LIST_WRITING, + GRPC_CHTTP2_LIST_WRITTEN, + GRPC_CHTTP2_LIST_WRITABLE_WINDOW_UPDATE, + GRPC_CHTTP2_LIST_PARSING_SEEN, + GRPC_CHTTP2_LIST_CLOSED_WAITING_FOR_PARSING, + GRPC_CHTTP2_LIST_INCOMING_WINDOW_UPDATED, + /** 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; + +/* deframer state for the overall http2 stream of bytes */ +typedef enum { + /* prefix: one entry per http2 connection prefix byte */ + DTS_CLIENT_PREFIX_0 = 0, + DTS_CLIENT_PREFIX_1, + DTS_CLIENT_PREFIX_2, + DTS_CLIENT_PREFIX_3, + DTS_CLIENT_PREFIX_4, + DTS_CLIENT_PREFIX_5, + DTS_CLIENT_PREFIX_6, + DTS_CLIENT_PREFIX_7, + DTS_CLIENT_PREFIX_8, + DTS_CLIENT_PREFIX_9, + DTS_CLIENT_PREFIX_10, + DTS_CLIENT_PREFIX_11, + DTS_CLIENT_PREFIX_12, + DTS_CLIENT_PREFIX_13, + DTS_CLIENT_PREFIX_14, + DTS_CLIENT_PREFIX_15, + DTS_CLIENT_PREFIX_16, + DTS_CLIENT_PREFIX_17, + DTS_CLIENT_PREFIX_18, + DTS_CLIENT_PREFIX_19, + DTS_CLIENT_PREFIX_20, + DTS_CLIENT_PREFIX_21, + DTS_CLIENT_PREFIX_22, + DTS_CLIENT_PREFIX_23, + /* frame header byte 0... */ + /* must follow from the prefix states */ + DTS_FH_0, + DTS_FH_1, + DTS_FH_2, + DTS_FH_3, + DTS_FH_4, + DTS_FH_5, + DTS_FH_6, + DTS_FH_7, + /* ... frame header byte 8 */ + DTS_FH_8, + /* inside a http2 frame */ + DTS_FRAME +} grpc_chttp2_deframe_transport_state; + +typedef enum { + WRITE_STATE_OPEN, + WRITE_STATE_QUEUED_CLOSE, + WRITE_STATE_SENT_CLOSE +} grpc_chttp2_write_state; + +typedef enum { + DONT_SEND_CLOSED = 0, + SEND_CLOSED, + SEND_CLOSED_WITH_RST_STREAM +} grpc_chttp2_send_closed; + +typedef struct { + grpc_chttp2_stream *head; + grpc_chttp2_stream *tail; +} grpc_chttp2_stream_list; + +typedef struct { + grpc_chttp2_stream *next; + grpc_chttp2_stream *prev; +} grpc_chttp2_stream_link; + +typedef enum { + GRPC_CHTTP2_ERROR_STATE_NONE, + GRPC_CHTTP2_ERROR_STATE_SEEN, + GRPC_CHTTP2_ERROR_STATE_NOTIFIED +} grpc_chttp2_error_state; + +/* We keep several sets of connection wide parameters */ +typedef enum { + /* The settings our peer has asked for (and we have acked) */ + PEER_SETTINGS = 0, + /* The settings we'd like to have */ + LOCAL_SETTINGS, + /* The settings we've published to our peer */ + SENT_SETTINGS, + /* The settings the peer has acked */ + ACKED_SETTINGS, + NUM_SETTING_SETS +} grpc_chttp2_setting_set; + +/* Outstanding ping request data */ +typedef struct grpc_chttp2_outstanding_ping { + gpr_uint8 id[8]; + grpc_iomgr_closure *on_recv; + struct grpc_chttp2_outstanding_ping *next; + struct grpc_chttp2_outstanding_ping *prev; +} grpc_chttp2_outstanding_ping; + +typedef struct { + /** data to write next write */ + gpr_slice_buffer qbuf; + /** queued callbacks */ + grpc_iomgr_closure *pending_closures; + + /** window available for us to send to peer */ + gpr_uint32 outgoing_window; + /** window available for peer to send to us - updated after parse */ + gpr_uint32 incoming_window; + /** how much window would we like to have for incoming_window */ + gpr_uint32 connection_window_target; + + /** is this transport a client? */ + gpr_uint8 is_client; + /** are the local settings dirty and need to be sent? */ + gpr_uint8 dirtied_local_settings; + /** have local settings been sent? */ + gpr_uint8 sent_local_settings; + /** bitmask of setting indexes to send out */ + gpr_uint32 force_send_settings; + /** settings values */ + gpr_uint32 settings[NUM_SETTING_SETS][GRPC_CHTTP2_NUM_SETTINGS]; + + /** has there been a connection level error, and have we notified + anyone about it? */ + grpc_chttp2_error_state error_state; + + /** what is the next stream id to be allocated by this peer? + copied to next_stream_id in parsing when parsing commences */ + gpr_uint32 next_stream_id; + + /** last received stream id */ + gpr_uint32 last_incoming_stream_id; + + /** pings awaiting responses */ + grpc_chttp2_outstanding_ping pings; + /** next payload for an outgoing ping */ + gpr_uint64 ping_counter; + + /** concurrent stream count: updated when not parsing, + so this is a strict over-estimation on the client */ + gpr_uint32 concurrent_stream_count; + + /** is there a goaway available? (boolean) */ + grpc_chttp2_error_state goaway_state; + /** what is the debug text of the goaway? */ + gpr_slice goaway_text; + /** what is the status code of the goaway? */ + grpc_status_code goaway_error; +} grpc_chttp2_transport_global; + +typedef struct { + /** data to write now */ + gpr_slice_buffer outbuf; + /** hpack encoding */ + grpc_chttp2_hpack_compressor hpack_compressor; + /** is this a client? */ + gpr_uint8 is_client; +} grpc_chttp2_transport_writing; + +struct grpc_chttp2_transport_parsing { + /** is this transport a client? (boolean) */ + gpr_uint8 is_client; + + /** were settings updated? */ + gpr_uint8 settings_updated; + /** was a settings ack received? */ + gpr_uint8 settings_ack_received; + /** was a goaway frame received? */ + gpr_uint8 goaway_received; + + /** initial window change */ + gpr_int64 initial_window_update; + + /** data to write later - after parsing */ + gpr_slice_buffer qbuf; + /* metadata object cache */ + grpc_mdstr *str_grpc_timeout; + /** parser for headers */ + grpc_chttp2_hpack_parser hpack_parser; + /** simple one shot parsers */ + union { + grpc_chttp2_window_update_parser window_update; + grpc_chttp2_settings_parser settings; + grpc_chttp2_ping_parser ping; + grpc_chttp2_rst_stream_parser rst_stream; + } simple; + /** parser for goaway frames */ + grpc_chttp2_goaway_parser goaway_parser; + + /** window available for peer to send to us */ + gpr_uint32 incoming_window; + gpr_uint32 incoming_window_delta; + + /** next stream id available at the time of beginning parsing */ + gpr_uint32 next_stream_id; + gpr_uint32 last_incoming_stream_id; + + /* deframing */ + grpc_chttp2_deframe_transport_state deframe_state; + gpr_uint8 incoming_frame_type; + gpr_uint8 incoming_frame_flags; + gpr_uint8 header_eof; + gpr_uint32 expect_continuation_stream_id; + gpr_uint32 incoming_frame_size; + gpr_uint32 incoming_stream_id; + + /* active parser */ + void *parser_data; + grpc_chttp2_stream_parsing *incoming_stream; + grpc_chttp2_parse_error (*parser)( + void *parser_user_data, grpc_chttp2_transport_parsing *transport_parsing, + grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last); + + /* received settings */ + gpr_uint32 settings[GRPC_CHTTP2_NUM_SETTINGS]; + + /* goaway data */ + grpc_status_code goaway_error; + gpr_uint32 goaway_last_stream_index; + gpr_slice goaway_text; + + gpr_uint64 outgoing_window_update; + + /** pings awaiting responses */ + grpc_chttp2_outstanding_ping pings; +}; + +struct grpc_chttp2_transport { + grpc_transport base; /* must be first */ + grpc_endpoint *ep; + grpc_mdctx *metadata_context; + gpr_refcount refs; + + gpr_mu mu; + + /** is the transport destroying itself? */ + gpr_uint8 destroying; + /** has the upper layer closed the transport? */ + gpr_uint8 closed; + + /** is a thread currently writing */ + gpr_uint8 writing_active; + /** is a thread currently parsing */ + gpr_uint8 parsing_active; + + /** is there a read request to the endpoint outstanding? */ + gpr_uint8 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_active=1 */ + 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_iomgr_closure writing_action; + + /** 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 { + /** is a thread currently performing channel callbacks */ + gpr_uint8 executing; + /** transport channel-level callback */ + const grpc_transport_callbacks *cb; + /** user data for cb calls */ + void *cb_user_data; + /** closure for notifying transport closure */ + grpc_iomgr_closure notify_closed; + } channel_callback; + +#if 0 + /* basic state management - what are we doing at the moment? */ + gpr_uint8 reading; + /** are we calling back any grpc_transport_op completion events */ + gpr_uint8 calling_back_ops; + gpr_uint8 destroying; + gpr_uint8 closed; + + /* stream indexing */ + gpr_uint32 next_stream_id; + + /* window management */ + gpr_uint32 outgoing_window_update; + + /* state for a stream that's not yet been created */ + grpc_stream_op_buffer new_stream_sopb; + + /* stream ops that need to be destroyed, but outside of the lock */ + grpc_stream_op_buffer nuke_later_sopb; + + /* pings */ + gpr_int64 ping_counter; + + + grpc_chttp2_stream **accepting_stream; + +#endif +}; + +typedef struct { + /** HTTP2 stream id for this stream, or zero if one has not been assigned */ + gpr_uint32 id; + + grpc_iomgr_closure *send_done_closure; + grpc_iomgr_closure *recv_done_closure; + + /** window available for us to send to peer */ + gpr_int64 outgoing_window; + /** window available for peer to send to us - updated after parse */ + gpr_uint32 incoming_window; + /** stream ops the transport user would like to send */ + grpc_stream_op_buffer *outgoing_sopb; + /** when the application requests writes be closed, the write_closed is + 'queued'; when the close is flow controlled into the send path, we are + 'sending' it; when the write has been performed it is 'sent' */ + grpc_chttp2_write_state write_state; + /** is this stream closed (boolean) */ + gpr_uint8 read_closed; + /** has this stream been cancelled? (boolean) */ + gpr_uint8 cancelled; + grpc_status_code cancelled_status; + /** have we told the upper layer that this stream is cancelled? */ + gpr_uint8 published_cancelled; + /** is this stream in the stream map? (boolean) */ + gpr_uint8 in_stream_map; + + /** stream state already published to the upper layer */ + grpc_stream_state published_state; + /** address to publish next stream state to */ + grpc_stream_state *publish_state; + /** pointer to sop buffer to fill in with new stream ops */ + grpc_stream_op_buffer *publish_sopb; + grpc_stream_op_buffer incoming_sopb; + + /** incoming metadata */ + grpc_chttp2_incoming_metadata_buffer incoming_metadata; + grpc_chttp2_incoming_metadata_live_op_buffer outstanding_metadata; +} grpc_chttp2_stream_global; + +typedef struct { + /** HTTP2 stream id for this stream, or zero if one has not been assigned */ + gpr_uint32 id; + /** sops that have passed flow control to be written */ + grpc_stream_op_buffer sopb; + /** how strongly should we indicate closure with the next write */ + grpc_chttp2_send_closed send_closed; +} grpc_chttp2_stream_writing; + +struct grpc_chttp2_stream_parsing { + /** HTTP2 stream id for this stream, or zero if one has not been assigned */ + gpr_uint32 id; + /** has this stream received a close */ + gpr_uint8 received_close; + /** saw a rst_stream */ + gpr_uint8 saw_rst_stream; + /** incoming_window has been reduced by this much during parsing */ + gpr_uint32 incoming_window_delta; + /** window available for peer to send to us */ + gpr_uint32 incoming_window; + /** parsing state for data frames */ + grpc_chttp2_data_parser data_parser; + /** reason give to rst_stream */ + gpr_uint32 rst_stream_reason; + /* amount of window given */ + gpr_uint64 outgoing_window_update; + + /** incoming metadata */ + grpc_chttp2_incoming_metadata_buffer incoming_metadata; + + /* + grpc_linked_mdelem *incoming_metadata; + size_t incoming_metadata_count; + size_t incoming_metadata_capacity; + grpc_linked_mdelem *old_incoming_metadata; + gpr_timespec incoming_deadline; + */ +}; + +struct grpc_chttp2_stream { + grpc_chttp2_stream_global global; + grpc_chttp2_stream_writing writing; + grpc_chttp2_stream_parsing parsing; + + grpc_chttp2_stream_link links[STREAM_LIST_COUNT]; + gpr_uint8 included[STREAM_LIST_COUNT]; + +#if 0 + gpr_uint32 outgoing_window_update; + gpr_uint8 cancelled; + + grpc_stream_state callback_state; + grpc_stream_op_buffer callback_sopb; +#endif +}; + +/** Transport writing call flow: + chttp2_transport.c calls grpc_chttp2_unlocking_check_writes to see if writes + are required; + if they are, chttp2_transport.c calls grpc_chttp2_perform_writes to do the + writes. + Once writes have been completed (meaning another write could potentially be + started), + grpc_chttp2_terminate_writing is called. This will call + grpc_chttp2_cleanup_writing, at which + point the write phase is complete. */ + +/** 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_chttp2_transport_global *global, + grpc_chttp2_transport_writing *writing); +void grpc_chttp2_perform_writes( + grpc_chttp2_transport_writing *transport_writing, grpc_endpoint *endpoint); +void grpc_chttp2_terminate_writing( + grpc_chttp2_transport_writing *transport_writing, int success); +void grpc_chttp2_cleanup_writing(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); +/** Process one slice of incoming data */ +int grpc_chttp2_perform_read(grpc_chttp2_transport_parsing *transport_parsing, + gpr_slice slice); +void grpc_chttp2_publish_reads(grpc_chttp2_transport_global *global, + grpc_chttp2_transport_parsing *parsing); + +/** Get a writable stream + \return non-zero if there was a stream available */ +void grpc_chttp2_list_add_writable_stream( + grpc_chttp2_transport_global *transport_global, + grpc_chttp2_stream_global *stream_global); +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); + +void grpc_chttp2_list_add_incoming_window_updated( + grpc_chttp2_transport_global *transport_global, + grpc_chttp2_stream_global *stream_global); +int grpc_chttp2_list_pop_incoming_window_updated( + 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_remove_incoming_window_updated( + grpc_chttp2_transport_global *transport_global, + grpc_chttp2_stream_global *stream_global); + +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_writable_window_update_stream( + grpc_chttp2_transport_global *transport_global, + grpc_chttp2_stream_global *stream_global); +int grpc_chttp2_list_pop_writable_window_update_stream( + grpc_chttp2_transport_global *transport_global, + grpc_chttp2_stream_global **stream_global); + +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_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_read_write_state_changed( + grpc_chttp2_transport_global *transport_global, + grpc_chttp2_stream_global *stream_global); +int grpc_chttp2_list_pop_read_write_state_changed( + grpc_chttp2_transport_global *transport_global, + grpc_chttp2_stream_global **stream_global); + +/** schedule a closure to run without the transport lock taken */ +void grpc_chttp2_schedule_closure( + grpc_chttp2_transport_global *transport_global, grpc_iomgr_closure *closure, + int success); + +grpc_chttp2_stream_parsing *grpc_chttp2_parsing_lookup_stream( + grpc_chttp2_transport_parsing *transport_parsing, gpr_uint32 id); +grpc_chttp2_stream_parsing *grpc_chttp2_parsing_accept_stream( + grpc_chttp2_transport_parsing *transport_parsing, gpr_uint32 id); + +void grpc_chttp2_add_incoming_goaway( + grpc_chttp2_transport_global *transport_global, gpr_uint32 goaway_error, + gpr_slice goaway_text); + +void grpc_chttp2_register_stream(grpc_chttp2_transport *t, + grpc_chttp2_stream *s); +void grpc_chttp2_unregister_stream(grpc_chttp2_transport *t, + grpc_chttp2_stream *s); +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_chttp2_transport_parsing *transport_parsing); + +#define GRPC_CHTTP2_CLIENT_CONNECT_STRING "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n" +#define GRPC_CHTTP2_CLIENT_CONNECT_STRLEN \ + (sizeof(GRPC_CHTTP2_CLIENT_CONNECT_STRING) - 1) + +extern int grpc_http_trace; +extern int grpc_flowctl_trace; + +#define IF_TRACING(stmt) \ + if (!(grpc_http_trace)) \ + ; \ + else \ + stmt + +#define GRPC_CHTTP2_FLOWCTL_TRACE_STREAM(reason, transport, context, var, \ + delta) \ + if (!(grpc_flowctl_trace)) { \ + } else { \ + grpc_chttp2_flowctl_trace(__FILE__, __LINE__, reason, #context, #var, \ + transport->is_client, context->id, context->var, \ + delta); \ + } + +#define GRPC_CHTTP2_FLOWCTL_TRACE_TRANSPORT(reason, context, var, delta) \ + if (!(grpc_flowctl_trace)) { \ + } else { \ + grpc_chttp2_flowctl_trace(__FILE__, __LINE__, reason, #context, #var, \ + context->is_client, 0, context->var, delta); \ + } + +void grpc_chttp2_flowctl_trace(const char *file, int line, const char *reason, + const char *context, const char *var, + int is_client, gpr_uint32 stream_id, + gpr_int64 current_value, gpr_int64 delta); + +#endif diff --git a/src/core/transport/chttp2/parsing.c b/src/core/transport/chttp2/parsing.c new file mode 100644 index 0000000000..7276f8cafa --- /dev/null +++ b/src/core/transport/chttp2/parsing.c @@ -0,0 +1,812 @@ +/* + * + * 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 "src/core/transport/chttp2/internal.h" + +#include <string.h> + +#include "src/core/transport/chttp2/http2_errors.h" +#include "src/core/transport/chttp2/status_conversion.h" +#include "src/core/transport/chttp2/timeout_encoding.h" + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> + +static int init_frame_parser(grpc_chttp2_transport_parsing *transport_parsing); +static int init_header_frame_parser( + grpc_chttp2_transport_parsing *transport_parsing, int is_continuation); +static int init_data_frame_parser( + grpc_chttp2_transport_parsing *transport_parsing); +static int init_rst_stream_parser( + grpc_chttp2_transport_parsing *transport_parsing); +static int init_settings_frame_parser( + grpc_chttp2_transport_parsing *transport_parsing); +static int init_window_update_frame_parser( + grpc_chttp2_transport_parsing *transport_parsing); +static int init_ping_parser(grpc_chttp2_transport_parsing *transport_parsing); +static int init_goaway_parser(grpc_chttp2_transport_parsing *transport_parsing); +static int init_skip_frame_parser( + grpc_chttp2_transport_parsing *transport_parsing, int is_header); + +static int parse_frame_slice(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; + + transport_parsing->next_stream_id = transport_global->next_stream_id; + + /* update the parsing view of incoming window */ + if (transport_parsing->incoming_window != transport_global->incoming_window) { + GRPC_CHTTP2_FLOWCTL_TRACE_TRANSPORT( + "parse", transport_parsing, incoming_window, + (gpr_int64)transport_global->incoming_window - + (gpr_int64)transport_parsing->incoming_window); + transport_parsing->incoming_window = transport_global->incoming_window; + } + while (grpc_chttp2_list_pop_incoming_window_updated( + transport_global, transport_parsing, &stream_global, &stream_parsing)) { + stream_parsing->id = stream_global->id; + if (stream_parsing->incoming_window != stream_global->incoming_window) { + GRPC_CHTTP2_FLOWCTL_TRACE_STREAM( + "parse", transport_parsing, stream_parsing, incoming_window, + (gpr_int64)stream_global->incoming_window - + (gpr_int64)stream_parsing->incoming_window); + stream_parsing->incoming_window = stream_global->incoming_window; + } + } +} + +void grpc_chttp2_publish_reads( + grpc_chttp2_transport_global *transport_global, + grpc_chttp2_transport_parsing *transport_parsing) { + grpc_chttp2_stream_global *stream_global; + grpc_chttp2_stream_parsing *stream_parsing; + + /* 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->incoming_stream_id; + } + + /* TODO(ctiller): re-implement */ + GPR_ASSERT(transport_parsing->initial_window_update == 0); + + /* copy parsing qbuf to global qbuf */ + gpr_slice_buffer_move_into(&transport_parsing->qbuf, &transport_global->qbuf); + + /* update global settings */ + if (transport_parsing->settings_updated) { + memcpy(transport_global->settings[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[ACKED_SETTINGS], + transport_global->settings[SENT_SETTINGS], + GRPC_CHTTP2_NUM_SETTINGS * sizeof(gpr_uint32)); + transport_parsing->settings_ack_received = 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(transport_global, + transport_parsing->goaway_error, + transport_parsing->goaway_text); + transport_parsing->goaway_received = 0; + } + + /* propagate flow control tokens to global state */ + if (transport_parsing->outgoing_window_update) { + GRPC_CHTTP2_FLOWCTL_TRACE_TRANSPORT( + "parsed", transport_global, outgoing_window, + transport_parsing->outgoing_window_update); + GRPC_CHTTP2_FLOWCTL_TRACE_TRANSPORT( + "parsed", transport_parsing, outgoing_window_update, + -(gpr_int64)transport_parsing->outgoing_window_update); + transport_global->outgoing_window += + transport_parsing->outgoing_window_update; + transport_parsing->outgoing_window_update = 0; + } + + if (transport_parsing->incoming_window_delta) { + GRPC_CHTTP2_FLOWCTL_TRACE_TRANSPORT( + "parsed", transport_global, incoming_window, + -(gpr_int64)transport_parsing->incoming_window_delta); + GRPC_CHTTP2_FLOWCTL_TRACE_TRANSPORT( + "parsed", transport_parsing, incoming_window_delta, + -(gpr_int64)transport_parsing->incoming_window_delta); + transport_global->incoming_window -= + transport_parsing->incoming_window_delta; + transport_parsing->incoming_window_delta = 0; + } + + /* 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)) { + /* update incoming flow control window */ + if (stream_parsing->incoming_window_delta) { + GRPC_CHTTP2_FLOWCTL_TRACE_STREAM( + "parsed", transport_parsing, stream_global, incoming_window, + -(gpr_int64)stream_parsing->incoming_window_delta); + GRPC_CHTTP2_FLOWCTL_TRACE_STREAM( + "parsed", transport_parsing, stream_parsing, incoming_window_delta, + -(gpr_int64)stream_parsing->incoming_window_delta); + stream_global->incoming_window -= stream_parsing->incoming_window_delta; + stream_parsing->incoming_window_delta = 0; + grpc_chttp2_list_add_writable_window_update_stream(transport_global, + stream_global); + } + + /* update outgoing flow control window */ + if (stream_parsing->outgoing_window_update) { + int was_zero = stream_global->outgoing_window <= 0; + int is_zero; + GRPC_CHTTP2_FLOWCTL_TRACE_STREAM("parsed", transport_parsing, + stream_global, outgoing_window, + stream_parsing->outgoing_window_update); + GRPC_CHTTP2_FLOWCTL_TRACE_STREAM( + "parsed", transport_parsing, stream_parsing, outgoing_window_update, + -(gpr_int64)stream_parsing->outgoing_window_update); + stream_global->outgoing_window += stream_parsing->outgoing_window_update; + stream_parsing->outgoing_window_update = 0; + is_zero = stream_global->outgoing_window <= 0; + gpr_log(GPR_DEBUG, "was=%d is=%d", was_zero, is_zero); + if (was_zero && !is_zero) { + grpc_chttp2_list_add_writable_stream(transport_global, stream_global); + } + } + + /* updating closed status */ + if (stream_parsing->received_close) { + stream_global->read_closed = 1; + grpc_chttp2_list_add_read_write_state_changed(transport_global, + stream_global); + } + if (stream_parsing->saw_rst_stream) { + stream_global->cancelled = 1; + stream_global->cancelled_status = grpc_chttp2_http2_error_to_grpc_status(stream_parsing->rst_stream_reason); + if (stream_parsing->rst_stream_reason == GRPC_CHTTP2_NO_ERROR) { + stream_global->published_cancelled = 1; + } + grpc_chttp2_list_add_read_write_state_changed(transport_global, + stream_global); + } + + /* publish incoming stream ops */ + if (stream_parsing->data_parser.incoming_sopb.nops > 0) { + grpc_incoming_metadata_buffer_move_to_referencing_sopb( + &stream_parsing->incoming_metadata, &stream_global->incoming_metadata, + &stream_parsing->data_parser.incoming_sopb); + grpc_sopb_move_to(&stream_parsing->data_parser.incoming_sopb, + &stream_global->incoming_sopb); + grpc_chttp2_list_add_read_write_state_changed(transport_global, + stream_global); + } + } +} + +int grpc_chttp2_perform_read(grpc_chttp2_transport_parsing *transport_parsing, + gpr_slice slice) { + gpr_uint8 *beg = GPR_SLICE_START_PTR(slice); + gpr_uint8 *end = GPR_SLICE_END_PTR(slice); + gpr_uint8 *cur = beg; + + if (cur == end) return 1; + + switch (transport_parsing->deframe_state) { + case DTS_CLIENT_PREFIX_0: + case DTS_CLIENT_PREFIX_1: + case DTS_CLIENT_PREFIX_2: + case DTS_CLIENT_PREFIX_3: + case DTS_CLIENT_PREFIX_4: + case DTS_CLIENT_PREFIX_5: + case DTS_CLIENT_PREFIX_6: + case DTS_CLIENT_PREFIX_7: + case DTS_CLIENT_PREFIX_8: + case DTS_CLIENT_PREFIX_9: + case DTS_CLIENT_PREFIX_10: + case DTS_CLIENT_PREFIX_11: + case DTS_CLIENT_PREFIX_12: + case DTS_CLIENT_PREFIX_13: + case DTS_CLIENT_PREFIX_14: + case DTS_CLIENT_PREFIX_15: + case DTS_CLIENT_PREFIX_16: + case DTS_CLIENT_PREFIX_17: + case DTS_CLIENT_PREFIX_18: + case DTS_CLIENT_PREFIX_19: + case DTS_CLIENT_PREFIX_20: + case DTS_CLIENT_PREFIX_21: + case DTS_CLIENT_PREFIX_22: + case DTS_CLIENT_PREFIX_23: + while (cur != end && transport_parsing->deframe_state != DTS_FH_0) { + if (*cur != GRPC_CHTTP2_CLIENT_CONNECT_STRING[transport_parsing + ->deframe_state]) { + gpr_log(GPR_ERROR, + "Connect string mismatch: expected '%c' (%d) got '%c' (%d) " + "at byte %d", + GRPC_CHTTP2_CLIENT_CONNECT_STRING[transport_parsing + ->deframe_state], + (int)(gpr_uint8)GRPC_CHTTP2_CLIENT_CONNECT_STRING + [transport_parsing->deframe_state], + *cur, (int)*cur, transport_parsing->deframe_state); + return 0; + } + ++cur; + ++transport_parsing->deframe_state; + } + if (cur == end) { + return 1; + } + /* fallthrough */ + dts_fh_0: + case DTS_FH_0: + GPR_ASSERT(cur < end); + transport_parsing->incoming_frame_size = ((gpr_uint32)*cur) << 16; + if (++cur == end) { + transport_parsing->deframe_state = DTS_FH_1; + return 1; + } + /* fallthrough */ + case DTS_FH_1: + GPR_ASSERT(cur < end); + transport_parsing->incoming_frame_size |= ((gpr_uint32)*cur) << 8; + if (++cur == end) { + transport_parsing->deframe_state = DTS_FH_2; + return 1; + } + /* fallthrough */ + case DTS_FH_2: + GPR_ASSERT(cur < end); + transport_parsing->incoming_frame_size |= *cur; + if (++cur == end) { + transport_parsing->deframe_state = DTS_FH_3; + return 1; + } + /* fallthrough */ + case DTS_FH_3: + GPR_ASSERT(cur < end); + transport_parsing->incoming_frame_type = *cur; + if (++cur == end) { + transport_parsing->deframe_state = DTS_FH_4; + return 1; + } + /* fallthrough */ + case DTS_FH_4: + GPR_ASSERT(cur < end); + transport_parsing->incoming_frame_flags = *cur; + if (++cur == end) { + transport_parsing->deframe_state = DTS_FH_5; + return 1; + } + /* fallthrough */ + case DTS_FH_5: + GPR_ASSERT(cur < end); + transport_parsing->incoming_stream_id = (((gpr_uint32)*cur) & 0x7f) << 24; + if (++cur == end) { + transport_parsing->deframe_state = DTS_FH_6; + return 1; + } + /* fallthrough */ + case DTS_FH_6: + GPR_ASSERT(cur < end); + transport_parsing->incoming_stream_id |= ((gpr_uint32)*cur) << 16; + if (++cur == end) { + transport_parsing->deframe_state = DTS_FH_7; + return 1; + } + /* fallthrough */ + case DTS_FH_7: + GPR_ASSERT(cur < end); + transport_parsing->incoming_stream_id |= ((gpr_uint32)*cur) << 8; + if (++cur == end) { + transport_parsing->deframe_state = DTS_FH_8; + return 1; + } + /* fallthrough */ + case DTS_FH_8: + GPR_ASSERT(cur < end); + transport_parsing->incoming_stream_id |= ((gpr_uint32)*cur); + transport_parsing->deframe_state = DTS_FRAME; + if (!init_frame_parser(transport_parsing)) { + return 0; + } + if (transport_parsing->incoming_stream_id) { + transport_parsing->last_incoming_stream_id = + transport_parsing->incoming_stream_id; + } + if (transport_parsing->incoming_frame_size == 0) { + if (!parse_frame_slice(transport_parsing, gpr_empty_slice(), 1)) { + return 0; + } + transport_parsing->incoming_stream = NULL; + if (++cur == end) { + transport_parsing->deframe_state = DTS_FH_0; + return 1; + } + goto dts_fh_0; /* loop */ + } + if (++cur == end) { + return 1; + } + /* fallthrough */ + case DTS_FRAME: + GPR_ASSERT(cur < end); + if ((gpr_uint32)(end - cur) == transport_parsing->incoming_frame_size) { + if (!parse_frame_slice( + transport_parsing, + gpr_slice_sub_no_ref(slice, cur - beg, end - beg), 1)) { + return 0; + } + transport_parsing->deframe_state = DTS_FH_0; + transport_parsing->incoming_stream = NULL; + return 1; + } else if ((gpr_uint32)(end - cur) > + transport_parsing->incoming_frame_size) { + if (!parse_frame_slice( + transport_parsing, + gpr_slice_sub_no_ref( + slice, cur - beg, + cur + transport_parsing->incoming_frame_size - beg), + 1)) { + return 0; + } + cur += transport_parsing->incoming_frame_size; + transport_parsing->incoming_stream = NULL; + goto dts_fh_0; /* loop */ + } else { + if (!parse_frame_slice( + transport_parsing, + gpr_slice_sub_no_ref(slice, cur - beg, end - beg), 0)) { + return 0; + } + transport_parsing->incoming_frame_size -= (end - cur); + return 1; + } + gpr_log(GPR_ERROR, "should never reach here"); + abort(); + } + + gpr_log(GPR_ERROR, "should never reach here"); + abort(); + + return 0; +} + +static int init_frame_parser(grpc_chttp2_transport_parsing *transport_parsing) { + if (transport_parsing->expect_continuation_stream_id != 0) { + if (transport_parsing->incoming_frame_type != + GRPC_CHTTP2_FRAME_CONTINUATION) { + gpr_log(GPR_ERROR, "Expected CONTINUATION frame, got frame type %02x", + transport_parsing->incoming_frame_type); + return 0; + } + if (transport_parsing->expect_continuation_stream_id != + transport_parsing->incoming_stream_id) { + gpr_log(GPR_ERROR, + "Expected CONTINUATION frame for grpc_chttp2_stream %08x, got " + "grpc_chttp2_stream %08x", + transport_parsing->expect_continuation_stream_id, + transport_parsing->incoming_stream_id); + return 0; + } + return init_header_frame_parser(transport_parsing, 1); + } + switch (transport_parsing->incoming_frame_type) { + case GRPC_CHTTP2_FRAME_DATA: + return init_data_frame_parser(transport_parsing); + case GRPC_CHTTP2_FRAME_HEADER: + return init_header_frame_parser(transport_parsing, 0); + case GRPC_CHTTP2_FRAME_CONTINUATION: + gpr_log(GPR_ERROR, "Unexpected CONTINUATION frame"); + return 0; + case GRPC_CHTTP2_FRAME_RST_STREAM: + return init_rst_stream_parser(transport_parsing); + case GRPC_CHTTP2_FRAME_SETTINGS: + return init_settings_frame_parser(transport_parsing); + case GRPC_CHTTP2_FRAME_WINDOW_UPDATE: + return init_window_update_frame_parser(transport_parsing); + case GRPC_CHTTP2_FRAME_PING: + return init_ping_parser(transport_parsing); + case GRPC_CHTTP2_FRAME_GOAWAY: + return init_goaway_parser(transport_parsing); + default: + gpr_log(GPR_ERROR, "Unknown frame type %02x", + transport_parsing->incoming_frame_type); + return init_skip_frame_parser(transport_parsing, 0); + } +} + +static grpc_chttp2_parse_error skip_parser( + void *parser, grpc_chttp2_transport_parsing *transport_parsing, + grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last) { + return GRPC_CHTTP2_PARSE_OK; +} + +static void skip_header(void *tp, grpc_mdelem *md) { grpc_mdelem_unref(md); } + +static int init_skip_frame_parser( + grpc_chttp2_transport_parsing *transport_parsing, int is_header) { + if (is_header) { + int 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 = + is_eoh ? transport_parsing->header_eof : 0; + } else { + transport_parsing->parser = skip_parser; + } + return 1; +} + +void grpc_chttp2_parsing_become_skip_parser( + grpc_chttp2_transport_parsing *transport_parsing) { + init_skip_frame_parser( + transport_parsing, + transport_parsing->parser == grpc_chttp2_header_parser_parse); +} + +static grpc_chttp2_parse_error update_incoming_window( + grpc_chttp2_transport_parsing *transport_parsing, + grpc_chttp2_stream_parsing *stream_parsing) { + if (transport_parsing->incoming_frame_size > + transport_parsing->incoming_window) { + gpr_log(GPR_ERROR, "frame of size %d overflows incoming window of %d", + transport_parsing->incoming_frame_size, + transport_parsing->incoming_window); + return GRPC_CHTTP2_CONNECTION_ERROR; + } + + if (transport_parsing->incoming_frame_size > + stream_parsing->incoming_window) { + gpr_log(GPR_ERROR, "frame of size %d overflows incoming window of %d", + transport_parsing->incoming_frame_size, + stream_parsing->incoming_window); + return GRPC_CHTTP2_CONNECTION_ERROR; + } + + GRPC_CHTTP2_FLOWCTL_TRACE_TRANSPORT( + "data", transport_parsing, incoming_window, + -(gpr_int64)transport_parsing->incoming_frame_size); + GRPC_CHTTP2_FLOWCTL_TRACE_TRANSPORT("data", transport_parsing, + incoming_window_delta, + transport_parsing->incoming_frame_size); + GRPC_CHTTP2_FLOWCTL_TRACE_STREAM( + "data", transport_parsing, stream_parsing, incoming_window, + -(gpr_int64)transport_parsing->incoming_frame_size); + GRPC_CHTTP2_FLOWCTL_TRACE_STREAM("data", transport_parsing, stream_parsing, + incoming_window_delta, + transport_parsing->incoming_frame_size); + + transport_parsing->incoming_window -= transport_parsing->incoming_frame_size; + transport_parsing->incoming_window_delta += + transport_parsing->incoming_frame_size; + stream_parsing->incoming_window -= transport_parsing->incoming_frame_size; + stream_parsing->incoming_window_delta += + transport_parsing->incoming_frame_size; + grpc_chttp2_list_add_parsing_seen_stream(transport_parsing, stream_parsing); + + return GRPC_CHTTP2_PARSE_OK; +} + +static int init_data_frame_parser( + grpc_chttp2_transport_parsing *transport_parsing) { + grpc_chttp2_stream_parsing *stream_parsing = + grpc_chttp2_parsing_lookup_stream(transport_parsing, + transport_parsing->incoming_stream_id); + grpc_chttp2_parse_error err = GRPC_CHTTP2_PARSE_OK; + if (!stream_parsing || stream_parsing->received_close) + return init_skip_frame_parser(transport_parsing, 0); + if (err == GRPC_CHTTP2_PARSE_OK) { + err = update_incoming_window(transport_parsing, stream_parsing); + } + if (err == GRPC_CHTTP2_PARSE_OK) { + err = grpc_chttp2_data_parser_begin_frame( + &stream_parsing->data_parser, transport_parsing->incoming_frame_flags); + } + switch (err) { + case GRPC_CHTTP2_PARSE_OK: + transport_parsing->incoming_stream = stream_parsing; + transport_parsing->parser = grpc_chttp2_data_parser_parse; + transport_parsing->parser_data = &stream_parsing->data_parser; + return 1; + case GRPC_CHTTP2_STREAM_ERROR: + stream_parsing->received_close = 1; + stream_parsing->saw_rst_stream = 1; + stream_parsing->rst_stream_reason = GRPC_CHTTP2_PROTOCOL_ERROR; + gpr_slice_buffer_add( + &transport_parsing->qbuf, + grpc_chttp2_rst_stream_create(transport_parsing->incoming_stream_id, + GRPC_CHTTP2_PROTOCOL_ERROR)); + return init_skip_frame_parser(transport_parsing, 0); + case GRPC_CHTTP2_CONNECTION_ERROR: + return 0; + } + gpr_log(GPR_ERROR, "should never reach here"); + abort(); + return 0; +} + +static void free_timeout(void *p) { gpr_free(p); } + +static void on_header(void *tp, grpc_mdelem *md) { + grpc_chttp2_transport_parsing *transport_parsing = tp; + grpc_chttp2_stream_parsing *stream_parsing = + transport_parsing->incoming_stream; + + GPR_ASSERT(stream_parsing); + + IF_TRACING(gpr_log(GPR_INFO, "HTTP:%d:HDR: %s: %s", stream_parsing->id, + transport_parsing->is_client ? "CLI" : "SVR", + grpc_mdstr_as_c_string(md->key), + grpc_mdstr_as_c_string(md->value))); + + if (md->key == transport_parsing->str_grpc_timeout) { + gpr_timespec *cached_timeout = grpc_mdelem_get_user_data(md, free_timeout); + if (!cached_timeout) { + /* not already parsed: parse it now, and store the result away */ + cached_timeout = gpr_malloc(sizeof(gpr_timespec)); + if (!grpc_chttp2_decode_timeout(grpc_mdstr_as_c_string(md->value), + cached_timeout)) { + gpr_log(GPR_ERROR, "Ignoring bad timeout value '%s'", + grpc_mdstr_as_c_string(md->value)); + *cached_timeout = gpr_inf_future; + } + grpc_mdelem_set_user_data(md, free_timeout, cached_timeout); + } + grpc_chttp2_incoming_metadata_buffer_set_deadline( + &stream_parsing->incoming_metadata, + gpr_time_add(gpr_now(), *cached_timeout)); + grpc_mdelem_unref(md); + } else { + grpc_chttp2_incoming_metadata_buffer_add(&stream_parsing->incoming_metadata, + md); + } + + grpc_chttp2_list_add_parsing_seen_stream(transport_parsing, stream_parsing); +} + +static int init_header_frame_parser( + grpc_chttp2_transport_parsing *transport_parsing, int is_continuation) { + int is_eoh = (transport_parsing->incoming_frame_flags & + GRPC_CHTTP2_DATA_FLAG_END_HEADERS) != 0; + grpc_chttp2_stream_parsing *stream_parsing; + + if (is_eoh) { + transport_parsing->expect_continuation_stream_id = 0; + } else { + transport_parsing->expect_continuation_stream_id = + transport_parsing->incoming_stream_id; + } + + if (!is_continuation) { + transport_parsing->header_eof = (transport_parsing->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) { + if (is_continuation) { + gpr_log(GPR_ERROR, + "grpc_chttp2_stream disbanded before CONTINUATION received"); + return init_skip_frame_parser(transport_parsing, 1); + } + if (transport_parsing->is_client) { + if ((transport_parsing->incoming_stream_id & 1) && + transport_parsing->incoming_stream_id < + transport_parsing->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(transport_parsing, 1); + } else if (transport_parsing->last_incoming_stream_id > + transport_parsing->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(transport_parsing, 1); + } else if ((transport_parsing->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(transport_parsing, 1); + } + stream_parsing = transport_parsing->incoming_stream = + grpc_chttp2_parsing_accept_stream( + transport_parsing, transport_parsing->incoming_stream_id); + if (!stream_parsing) { + gpr_log(GPR_ERROR, "grpc_chttp2_stream not accepted"); + return init_skip_frame_parser(transport_parsing, 1); + } + } else { + transport_parsing->incoming_stream = stream_parsing; + } + if (stream_parsing->received_close) { + gpr_log(GPR_ERROR, "skipping already closed grpc_chttp2_stream header"); + transport_parsing->incoming_stream = NULL; + return init_skip_frame_parser(transport_parsing, 1); + } + transport_parsing->parser = grpc_chttp2_header_parser_parse; + transport_parsing->parser_data = &transport_parsing->hpack_parser; + transport_parsing->hpack_parser.on_header = on_header; + transport_parsing->hpack_parser.on_header_user_data = transport_parsing; + transport_parsing->hpack_parser.is_boundary = is_eoh; + transport_parsing->hpack_parser.is_eof = + 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); + } + return 1; +} + +static int init_window_update_frame_parser( + grpc_chttp2_transport_parsing *transport_parsing) { + int ok = GRPC_CHTTP2_PARSE_OK == grpc_chttp2_window_update_parser_begin_frame( + &transport_parsing->simple.window_update, + transport_parsing->incoming_frame_size, + transport_parsing->incoming_frame_flags); + if (transport_parsing->incoming_stream_id) { + transport_parsing->incoming_stream = grpc_chttp2_parsing_lookup_stream( + transport_parsing, transport_parsing->incoming_stream_id); + } + transport_parsing->parser = grpc_chttp2_window_update_parser_parse; + transport_parsing->parser_data = &transport_parsing->simple.window_update; + return ok; +} + +static int init_ping_parser(grpc_chttp2_transport_parsing *transport_parsing) { + int ok = GRPC_CHTTP2_PARSE_OK == grpc_chttp2_ping_parser_begin_frame( + &transport_parsing->simple.ping, + transport_parsing->incoming_frame_size, + transport_parsing->incoming_frame_flags); + transport_parsing->parser = grpc_chttp2_ping_parser_parse; + transport_parsing->parser_data = &transport_parsing->simple.ping; + return ok; +} + +static int init_rst_stream_parser( + grpc_chttp2_transport_parsing *transport_parsing) { + int ok = GRPC_CHTTP2_PARSE_OK == grpc_chttp2_rst_stream_parser_begin_frame( + &transport_parsing->simple.rst_stream, + transport_parsing->incoming_frame_size, + transport_parsing->incoming_frame_flags); + 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(transport_parsing, 0); + } + transport_parsing->parser = grpc_chttp2_rst_stream_parser_parse; + transport_parsing->parser_data = &transport_parsing->simple.rst_stream; + return ok; +} + +static int init_goaway_parser( + grpc_chttp2_transport_parsing *transport_parsing) { + int ok = GRPC_CHTTP2_PARSE_OK == grpc_chttp2_goaway_parser_begin_frame( + &transport_parsing->goaway_parser, + transport_parsing->incoming_frame_size, + transport_parsing->incoming_frame_flags); + transport_parsing->parser = grpc_chttp2_goaway_parser_parse; + transport_parsing->parser_data = &transport_parsing->goaway_parser; + return ok; +} + +static int init_settings_frame_parser( + grpc_chttp2_transport_parsing *transport_parsing) { + int ok; + + if (transport_parsing->incoming_stream_id != 0) { + gpr_log(GPR_ERROR, "settings frame received for grpc_chttp2_stream %d", + transport_parsing->incoming_stream_id); + return 0; + } + + ok = GRPC_CHTTP2_PARSE_OK == grpc_chttp2_settings_parser_begin_frame( + &transport_parsing->simple.settings, + transport_parsing->incoming_frame_size, + transport_parsing->incoming_frame_flags, + transport_parsing->settings); + if (!ok) { + return 0; + } + if (transport_parsing->incoming_frame_flags & GRPC_CHTTP2_FLAG_ACK) { + transport_parsing->settings_ack_received = 1; + } else { + transport_parsing->settings_updated = 1; + } + transport_parsing->parser = grpc_chttp2_settings_parser_parse; + transport_parsing->parser_data = &transport_parsing->simple.settings; + return ok; +} + +/* +static int is_window_update_legal(gpr_int64 window_update, gpr_int64 window) { + return window + window_update < MAX_WINDOW; +} +*/ + +static int parse_frame_slice(grpc_chttp2_transport_parsing *transport_parsing, + gpr_slice slice, int is_last) { + grpc_chttp2_stream_parsing *stream_parsing = + transport_parsing->incoming_stream; + switch (transport_parsing->parser(transport_parsing->parser_data, + transport_parsing, stream_parsing, slice, + is_last)) { + case GRPC_CHTTP2_PARSE_OK: + if (stream_parsing) { + grpc_chttp2_list_add_parsing_seen_stream(transport_parsing, + stream_parsing); + } + return 1; + case GRPC_CHTTP2_STREAM_ERROR: + grpc_chttp2_parsing_become_skip_parser(transport_parsing); + if (stream_parsing) { + stream_parsing->saw_rst_stream = 1; + stream_parsing->rst_stream_reason = GRPC_CHTTP2_PROTOCOL_ERROR; + gpr_slice_buffer_add( + &transport_parsing->qbuf, + grpc_chttp2_rst_stream_create(transport_parsing->incoming_stream_id, + GRPC_CHTTP2_PROTOCOL_ERROR)); + } + return 1; + case GRPC_CHTTP2_CONNECTION_ERROR: + return 0; + } + gpr_log(GPR_ERROR, "should never reach here"); + abort(); + return 0; +} diff --git a/src/core/transport/chttp2/status_conversion.h b/src/core/transport/chttp2/status_conversion.h index cf06c3576e..0ec5b560b8 100644 --- a/src/core/transport/chttp2/status_conversion.h +++ b/src/core/transport/chttp2/status_conversion.h @@ -47,4 +47,4 @@ grpc_status_code grpc_chttp2_http2_error_to_grpc_status( grpc_status_code grpc_chttp2_http2_status_to_grpc_status(int status); int grpc_chttp2_grpc_status_to_http2_status(grpc_status_code status); -#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_STATUS_CONVERSION_H */ +#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_STATUS_CONVERSION_H */ diff --git a/src/core/transport/chttp2/stream_encoder.h b/src/core/transport/chttp2/stream_encoder.h index 50c58ad5ca..db52f2a0f6 100644 --- a/src/core/transport/chttp2/stream_encoder.h +++ b/src/core/transport/chttp2/stream_encoder.h @@ -90,4 +90,4 @@ void grpc_chttp2_encode(grpc_stream_op *ops, size_t ops_count, int eof, grpc_chttp2_hpack_compressor *compressor, gpr_slice_buffer *output); -#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_STREAM_ENCODER_H */ +#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_STREAM_ENCODER_H */ diff --git a/src/core/transport/chttp2/stream_lists.c b/src/core/transport/chttp2/stream_lists.c new file mode 100644 index 0000000000..bac9060cb8 --- /dev/null +++ b/src/core/transport/chttp2/stream_lists.c @@ -0,0 +1,347 @@ +/* + * + * 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 "src/core/transport/chttp2/internal.h" + +#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, + grpc_chttp2_stream_list_id id) { + return t->lists[id].head == NULL; +} + +static int stream_list_pop(grpc_chttp2_transport *t, + grpc_chttp2_stream **stream, + grpc_chttp2_stream_list_id id) { + grpc_chttp2_stream *s = t->lists[id].head; + if (s) { + grpc_chttp2_stream *new_head = s->links[id].next; + GPR_ASSERT(s->included[id]); + if (new_head) { + t->lists[id].head = new_head; + new_head->links[id].prev = NULL; + } else { + t->lists[id].head = NULL; + t->lists[id].tail = NULL; + } + s->included[id] = 0; + } + *stream = s; + return s != 0; +} + +static void stream_list_remove(grpc_chttp2_transport *t, grpc_chttp2_stream *s, + grpc_chttp2_stream_list_id id) { + GPR_ASSERT(s->included[id]); + s->included[id] = 0; + if (s->links[id].prev) { + s->links[id].prev->links[id].next = s->links[id].next; + } else { + GPR_ASSERT(t->lists[id].head == s); + t->lists[id].head = s->links[id].next; + } + if (s->links[id].next) { + s->links[id].next->links[id].prev = s->links[id].prev; + } else { + t->lists[id].tail = s->links[id].prev; + } +} + +static void stream_list_maybe_remove(grpc_chttp2_transport *t, + grpc_chttp2_stream *s, + grpc_chttp2_stream_list_id id) { + if (s->included[id]) { + stream_list_remove(t, s, id); + } +} + +static void stream_list_add_tail(grpc_chttp2_transport *t, + grpc_chttp2_stream *s, + grpc_chttp2_stream_list_id id) { + grpc_chttp2_stream *old_tail; + GPR_ASSERT(!s->included[id]); + old_tail = t->lists[id].tail; + s->links[id].next = NULL; + s->links[id].prev = old_tail; + if (old_tail) { + old_tail->links[id].next = s; + } else { + s->links[id].prev = NULL; + t->lists[id].head = s; + } + t->lists[id].tail = s; + s->included[id] = 1; +} + +static void stream_list_add(grpc_chttp2_transport *t, grpc_chttp2_stream *s, + grpc_chttp2_stream_list_id id) { + if (s->included[id]) { + return; + } + stream_list_add_tail(t, s, id); +} + +/* wrappers for specializations */ + +void grpc_chttp2_list_add_writable_stream( + 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_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); + *stream_global = &stream->global; + *stream_writing = &stream->writing; + return r; +} + +void grpc_chttp2_list_add_writing_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_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); +} + +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); + *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_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); + *stream_global = &stream->global; + *stream_writing = &stream->writing; + return r; +} + +void grpc_chttp2_list_add_writable_window_update_stream( + 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_WRITABLE_WINDOW_UPDATE); +} + +int grpc_chttp2_list_pop_writable_window_update_stream( + 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_WRITABLE_WINDOW_UPDATE); + *stream_global = &stream->global; + return r; +} + +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); +} + +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); + *stream_global = &stream->global; + *stream_parsing = &stream->parsing; + return r; +} + +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); +} + +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); + *stream_global = &stream->global; + return r; +} + +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); + *stream_global = &stream->global; + return r; +} + +void grpc_chttp2_list_add_incoming_window_updated( + 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_INCOMING_WINDOW_UPDATED); +} + +int grpc_chttp2_list_pop_incoming_window_updated( + 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_INCOMING_WINDOW_UPDATED); + *stream_global = &stream->global; + *stream_parsing = &stream->parsing; + return r; +} + +void grpc_chttp2_list_remove_incoming_window_updated( + 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_INCOMING_WINDOW_UPDATED); +} + +void grpc_chttp2_list_add_read_write_state_changed( + 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_READ_WRITE_STATE_CHANGED); +} + +int grpc_chttp2_list_pop_read_write_state_changed( + 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_READ_WRITE_STATE_CHANGED); + *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); +} + +void grpc_chttp2_unregister_stream(grpc_chttp2_transport *t, + grpc_chttp2_stream *s) { + stream_list_remove(t, s, 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; + for (s = TRANSPORT_FROM_GLOBAL(transport_global) + ->lists[GRPC_CHTTP2_LIST_ALL_STREAMS] + .head; + s; s = s->links[GRPC_CHTTP2_LIST_ALL_STREAMS].next) { + cb(transport_global, user_data, &s->global); + } +} diff --git a/src/core/transport/chttp2/stream_map.c b/src/core/transport/chttp2/stream_map.c index 580e32c582..baec29e18d 100644 --- a/src/core/transport/chttp2/stream_map.c +++ b/src/core/transport/chttp2/stream_map.c @@ -32,8 +32,12 @@ */ #include "src/core/transport/chttp2/stream_map.h" + +#include <string.h> + #include <grpc/support/alloc.h> #include <grpc/support/log.h> +#include <grpc/support/useful.h> void grpc_chttp2_stream_map_init(grpc_chttp2_stream_map *map, size_t initial_capacity) { @@ -92,6 +96,34 @@ void grpc_chttp2_stream_map_add(grpc_chttp2_stream_map *map, gpr_uint32 key, map->count = count + 1; } +void grpc_chttp2_stream_map_move_into(grpc_chttp2_stream_map *src, + grpc_chttp2_stream_map *dst) { + /* if src is empty we dont need to do anything */ + if (src->count == src->free) { + return; + } + /* if dst is empty we simply need to swap */ + if (dst->count == dst->free) { + GPR_SWAP(grpc_chttp2_stream_map, *src, *dst); + return; + } + /* if dst doesn't have capacity, resize */ + if (dst->count + src->count > dst->capacity) { + dst->capacity = GPR_MAX(dst->capacity * 3 / 2, dst->count + src->count); + dst->keys = gpr_realloc(dst->keys, dst->capacity * sizeof(gpr_uint32)); + dst->values = gpr_realloc(dst->values, dst->capacity * sizeof(gpr_uint32)); + } + /* the first element of src must be greater than the last of dst */ + GPR_ASSERT(src->keys[0] > dst->keys[dst->count - 1]); + memcpy(dst->keys + dst->count, src->keys, src->count * sizeof(gpr_uint32)); + memcpy(dst->values + dst->count, src->values, + src->count * sizeof(gpr_uint32)); + dst->count += src->count; + dst->free += src->free; + src->count = 0; + src->free = 0; +} + static void **find(grpc_chttp2_stream_map *map, gpr_uint32 key) { size_t min_idx = 0; size_t max_idx = map->count; diff --git a/src/core/transport/chttp2/stream_map.h b/src/core/transport/chttp2/stream_map.h index d338d2f892..71b0582054 100644 --- a/src/core/transport/chttp2/stream_map.h +++ b/src/core/transport/chttp2/stream_map.h @@ -66,6 +66,10 @@ void grpc_chttp2_stream_map_add(grpc_chttp2_stream_map *map, gpr_uint32 key, void *grpc_chttp2_stream_map_delete(grpc_chttp2_stream_map *map, gpr_uint32 key); +/* Move all elements of src into dst */ +void grpc_chttp2_stream_map_move_into(grpc_chttp2_stream_map *src, + grpc_chttp2_stream_map *dst); + /* Return an existing key, or NULL if it does not exist */ void *grpc_chttp2_stream_map_find(grpc_chttp2_stream_map *map, gpr_uint32 key); @@ -78,4 +82,4 @@ void grpc_chttp2_stream_map_for_each(grpc_chttp2_stream_map *map, void *value), void *user_data); -#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_STREAM_MAP_H */ +#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_STREAM_MAP_H */ diff --git a/src/core/transport/chttp2/timeout_encoding.h b/src/core/transport/chttp2/timeout_encoding.h index e6664c6262..9d8756e799 100644 --- a/src/core/transport/chttp2/timeout_encoding.h +++ b/src/core/transport/chttp2/timeout_encoding.h @@ -44,4 +44,4 @@ void grpc_chttp2_encode_timeout(gpr_timespec timeout, char *buffer); int grpc_chttp2_decode_timeout(const char *buffer, gpr_timespec *timeout); -#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_TIMEOUT_ENCODING_H */ +#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_TIMEOUT_ENCODING_H */ diff --git a/src/core/transport/chttp2/varint.h b/src/core/transport/chttp2/varint.h index ee04ed7fb2..0a6fb55248 100644 --- a/src/core/transport/chttp2/varint.h +++ b/src/core/transport/chttp2/varint.h @@ -56,19 +56,18 @@ void grpc_chttp2_hpack_write_varint_tail(gpr_uint32 tail_value, ((n) < GRPC_CHTTP2_MAX_IN_PREFIX(prefix_bits) \ ? 1 \ : grpc_chttp2_hpack_varint_length( \ - (n) - GRPC_CHTTP2_MAX_IN_PREFIX(prefix_bits))) + (n)-GRPC_CHTTP2_MAX_IN_PREFIX(prefix_bits))) -#define GRPC_CHTTP2_WRITE_VARINT(n, prefix_bits, prefix_or, target, length) \ - do { \ - gpr_uint8* tgt = target; \ - if ((length) == 1) { \ - (tgt)[0] = (prefix_or) | (n); \ - } else { \ - (tgt)[0] = (prefix_or) | GRPC_CHTTP2_MAX_IN_PREFIX(prefix_bits); \ - grpc_chttp2_hpack_write_varint_tail( \ - (n) - GRPC_CHTTP2_MAX_IN_PREFIX(prefix_bits), (tgt) + 1, \ - (length) - 1); \ - } \ +#define GRPC_CHTTP2_WRITE_VARINT(n, prefix_bits, prefix_or, target, length) \ + do { \ + gpr_uint8* tgt = target; \ + if ((length) == 1) { \ + (tgt)[0] = (prefix_or) | (n); \ + } else { \ + (tgt)[0] = (prefix_or) | GRPC_CHTTP2_MAX_IN_PREFIX(prefix_bits); \ + grpc_chttp2_hpack_write_varint_tail( \ + (n)-GRPC_CHTTP2_MAX_IN_PREFIX(prefix_bits), (tgt) + 1, (length)-1); \ + } \ } while (0) -#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_VARINT_H */ +#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_VARINT_H */ diff --git a/src/core/transport/chttp2/writing.c b/src/core/transport/chttp2/writing.c new file mode 100644 index 0000000000..5fbec8fdad --- /dev/null +++ b/src/core/transport/chttp2/writing.c @@ -0,0 +1,223 @@ +/* + * + * 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 "src/core/transport/chttp2/internal.h" +#include "src/core/transport/chttp2/http2_errors.h" + +#include <grpc/support/log.h> + +static void finalize_outbuf(grpc_chttp2_transport_writing *transport_writing); +static void finish_write_cb(void *tw, grpc_endpoint_cb_status write_status); + +int grpc_chttp2_unlocking_check_writes( + grpc_chttp2_transport_global *transport_global, + grpc_chttp2_transport_writing *transport_writing) { + grpc_chttp2_stream_global *stream_global; + grpc_chttp2_stream_writing *stream_writing; + gpr_uint32 window_delta; + + /* 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); + + if (transport_global->dirtied_local_settings && + !transport_global->sent_local_settings) { + gpr_slice_buffer_add( + &transport_writing->outbuf, + grpc_chttp2_settings_create(transport_global->settings[SENT_SETTINGS], + transport_global->settings[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; + } + + /* 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 (transport_global->outgoing_window && + grpc_chttp2_list_pop_writable_stream(transport_global, + transport_writing, &stream_global, + &stream_writing) && + stream_global->outgoing_window > 0) { + stream_writing->id = stream_global->id; + window_delta = grpc_chttp2_preencode( + stream_global->outgoing_sopb->ops, &stream_global->outgoing_sopb->nops, + GPR_MIN(transport_global->outgoing_window, + stream_global->outgoing_window), + &stream_writing->sopb); + GRPC_CHTTP2_FLOWCTL_TRACE_TRANSPORT( + "write", transport_global, outgoing_window, -(gpr_int64)window_delta); + GRPC_CHTTP2_FLOWCTL_TRACE_STREAM("write", transport_global, stream_global, + outgoing_window, -(gpr_int64)window_delta); + transport_global->outgoing_window -= window_delta; + stream_global->outgoing_window -= window_delta; + + gpr_log(GPR_DEBUG, "%s ws:%d nops:%d rc:%d", + transport_global->is_client ? "CLI" : "SVR", + stream_global->write_state, stream_global->outgoing_sopb->nops, + stream_global->read_closed); + + if (stream_global->write_state == WRITE_STATE_QUEUED_CLOSE && + stream_global->outgoing_sopb->nops == 0) { + if (!transport_global->is_client && !stream_global->read_closed) { + stream_writing->send_closed = SEND_CLOSED_WITH_RST_STREAM; + } else { + stream_writing->send_closed = SEND_CLOSED; + } + } + if (stream_writing->sopb.nops > 0 || + stream_writing->send_closed != DONT_SEND_CLOSED) { + grpc_chttp2_list_add_writing_stream(transport_writing, stream_writing); + } + + /* we should either exhaust window or have no ops left, but not both */ + if (stream_global->outgoing_sopb->nops == 0) { + stream_global->outgoing_sopb = NULL; + grpc_chttp2_schedule_closure(transport_global, + stream_global->send_done_closure, 1); + } else if (stream_global->outgoing_window > 0) { + grpc_chttp2_list_add_writable_stream(transport_global, stream_global); + } + } + + /* for each grpc_chttp2_stream that wants to update its window, add that + * window here */ + while (grpc_chttp2_list_pop_writable_window_update_stream(transport_global, + &stream_global)) { + window_delta = + transport_global->settings[LOCAL_SETTINGS] + [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE] - + stream_global->incoming_window; + if (!stream_global->read_closed && window_delta > 0) { + gpr_slice_buffer_add( + &transport_writing->outbuf, + grpc_chttp2_window_update_create(stream_global->id, window_delta)); + GRPC_CHTTP2_FLOWCTL_TRACE_STREAM("write", transport_global, stream_global, + incoming_window, window_delta); + stream_global->incoming_window += window_delta; + grpc_chttp2_list_add_incoming_window_updated(transport_global, + stream_global); + } + } + + /* if the grpc_chttp2_transport is ready to send a window update, do so here + * also */ + if (transport_global->incoming_window < + transport_global->connection_window_target * 3 / 4) { + window_delta = transport_global->connection_window_target - + transport_global->incoming_window; + gpr_slice_buffer_add(&transport_writing->outbuf, + grpc_chttp2_window_update_create(0, window_delta)); + GRPC_CHTTP2_FLOWCTL_TRACE_TRANSPORT("write", transport_global, + incoming_window, window_delta); + transport_global->incoming_window += window_delta; + } + + return transport_writing->outbuf.count > 0 || + grpc_chttp2_list_have_writing_streams(transport_writing); +} + +void grpc_chttp2_perform_writes( + 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(transport_writing); + + GPR_ASSERT(transport_writing->outbuf.count > 0); + GPR_ASSERT(endpoint); + + switch (grpc_endpoint_write(endpoint, transport_writing->outbuf.slices, + transport_writing->outbuf.count, finish_write_cb, + transport_writing)) { + case GRPC_ENDPOINT_WRITE_DONE: + grpc_chttp2_terminate_writing(transport_writing, 1); + break; + case GRPC_ENDPOINT_WRITE_ERROR: + grpc_chttp2_terminate_writing(transport_writing, 0); + break; + case GRPC_ENDPOINT_WRITE_PENDING: + break; + } +} + +static void finalize_outbuf(grpc_chttp2_transport_writing *transport_writing) { + grpc_chttp2_stream_writing *stream_writing; + + while ( + grpc_chttp2_list_pop_writing_stream(transport_writing, &stream_writing)) { + gpr_log(GPR_DEBUG, "%s write %d: sc=%d", + transport_writing->is_client ? "CLI" : "SVR", stream_writing->id, + stream_writing->send_closed); + grpc_chttp2_encode(stream_writing->sopb.ops, stream_writing->sopb.nops, + stream_writing->send_closed != DONT_SEND_CLOSED, + stream_writing->id, &transport_writing->hpack_compressor, + &transport_writing->outbuf); + stream_writing->sopb.nops = 0; + if (stream_writing->send_closed == SEND_CLOSED_WITH_RST_STREAM) { + gpr_slice_buffer_add(&transport_writing->outbuf, + grpc_chttp2_rst_stream_create(stream_writing->id, + GRPC_CHTTP2_NO_ERROR)); + } + grpc_chttp2_list_add_written_stream(transport_writing, stream_writing); + } +} + +static void finish_write_cb(void *tw, grpc_endpoint_cb_status write_status) { + grpc_chttp2_transport_writing *transport_writing = tw; + grpc_chttp2_terminate_writing(transport_writing, + write_status == GRPC_ENDPOINT_CB_OK); +} + +void grpc_chttp2_cleanup_writing( + grpc_chttp2_transport_global *transport_global, + grpc_chttp2_transport_writing *transport_writing) { + grpc_chttp2_stream_writing *stream_writing; + grpc_chttp2_stream_global *stream_global; + + while (grpc_chttp2_list_pop_written_stream( + transport_global, transport_writing, &stream_global, &stream_writing)) { + if (stream_writing->send_closed != DONT_SEND_CLOSED) { + stream_global->write_state = WRITE_STATE_SENT_CLOSE; + if (!transport_global->is_client) { + stream_global->read_closed = 1; + } + grpc_chttp2_list_add_read_write_state_changed(transport_global, + stream_global); + } + } + transport_writing->outbuf.count = 0; + transport_writing->outbuf.length = 0; +} diff --git a/src/core/transport/chttp2_transport.c b/src/core/transport/chttp2_transport.c index bd259f7ae3..2d3d720f2a 100644 --- a/src/core/transport/chttp2_transport.c +++ b/src/core/transport/chttp2_transport.c @@ -39,445 +39,174 @@ #include "src/core/profiling/timers.h" #include "src/core/support/string.h" -#include "src/core/transport/chttp2/frame_data.h" -#include "src/core/transport/chttp2/frame_goaway.h" -#include "src/core/transport/chttp2/frame_ping.h" -#include "src/core/transport/chttp2/frame_rst_stream.h" -#include "src/core/transport/chttp2/frame_settings.h" -#include "src/core/transport/chttp2/frame_window_update.h" -#include "src/core/transport/chttp2/hpack_parser.h" #include "src/core/transport/chttp2/http2_errors.h" #include "src/core/transport/chttp2/status_conversion.h" -#include "src/core/transport/chttp2/stream_encoder.h" -#include "src/core/transport/chttp2/stream_map.h" #include "src/core/transport/chttp2/timeout_encoding.h" +#include "src/core/transport/chttp2/internal.h" #include "src/core/transport/transport_impl.h" #include <grpc/support/alloc.h> #include <grpc/support/log.h> #include <grpc/support/slice_buffer.h> +#include <grpc/support/string_util.h> #include <grpc/support/useful.h> +/* #define REFCOUNTING_DEBUG */ + #define DEFAULT_WINDOW 65535 #define DEFAULT_CONNECTION_WINDOW_TARGET (1024 * 1024) #define MAX_WINDOW 0x7fffffffu #define MAX_CLIENT_STREAM_ID 0x7fffffffu -#define CLIENT_CONNECT_STRING "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n" -#define CLIENT_CONNECT_STRLEN 24 - int grpc_http_trace = 0; int grpc_flowctl_trace = 0; -typedef struct transport transport; -typedef struct stream stream; - -#define IF_TRACING(stmt) \ - if (!(grpc_http_trace)) \ - ; \ - else \ - stmt - -#define FLOWCTL_TRACE(t, obj, dir, id, delta) \ - if (!grpc_flowctl_trace) \ - ; \ - else \ - flowctl_trace(t, #dir, obj->dir##_window, id, delta) - -/* streams are kept in various linked lists depending on what things need to - happen to them... this enum labels each list */ -typedef enum { - /* streams that have pending writes */ - WRITABLE = 0, - /* streams that have been selected to be written */ - WRITING, - /* streams that have just been written, and included a close */ - WRITTEN_CLOSED, - /* streams that have been cancelled and have some pending state updates - to perform */ - CANCELLED, - /* streams that want to send window updates */ - WINDOW_UPDATE, - /* streams that are waiting to start because there are too many concurrent - streams on the connection */ - WAITING_FOR_CONCURRENCY, - /* streams that have finished reading: we wait until unlock to coalesce - all changes into one callback */ - FINISHED_READ_OP, - STREAM_LIST_COUNT /* must be last */ -} stream_list_id; - -/* deframer state for the overall http2 stream of bytes */ -typedef enum { - /* prefix: one entry per http2 connection prefix byte */ - DTS_CLIENT_PREFIX_0 = 0, - DTS_CLIENT_PREFIX_1, - DTS_CLIENT_PREFIX_2, - DTS_CLIENT_PREFIX_3, - DTS_CLIENT_PREFIX_4, - DTS_CLIENT_PREFIX_5, - DTS_CLIENT_PREFIX_6, - DTS_CLIENT_PREFIX_7, - DTS_CLIENT_PREFIX_8, - DTS_CLIENT_PREFIX_9, - DTS_CLIENT_PREFIX_10, - DTS_CLIENT_PREFIX_11, - DTS_CLIENT_PREFIX_12, - DTS_CLIENT_PREFIX_13, - DTS_CLIENT_PREFIX_14, - DTS_CLIENT_PREFIX_15, - DTS_CLIENT_PREFIX_16, - DTS_CLIENT_PREFIX_17, - DTS_CLIENT_PREFIX_18, - DTS_CLIENT_PREFIX_19, - DTS_CLIENT_PREFIX_20, - DTS_CLIENT_PREFIX_21, - DTS_CLIENT_PREFIX_22, - DTS_CLIENT_PREFIX_23, - /* frame header byte 0... */ - /* must follow from the prefix states */ - DTS_FH_0, - DTS_FH_1, - DTS_FH_2, - DTS_FH_3, - DTS_FH_4, - DTS_FH_5, - DTS_FH_6, - DTS_FH_7, - /* ... frame header byte 8 */ - DTS_FH_8, - /* inside a http2 frame */ - DTS_FRAME -} deframe_transport_state; - -typedef enum { - WRITE_STATE_OPEN, - WRITE_STATE_QUEUED_CLOSE, - WRITE_STATE_SENT_CLOSE -} write_state; - -typedef enum { - DONT_SEND_CLOSED = 0, - SEND_CLOSED, - SEND_CLOSED_WITH_RST_STREAM -} send_closed; - -typedef struct { - stream *head; - stream *tail; -} stream_list; - -typedef struct { - stream *next; - stream *prev; -} stream_link; - -typedef enum { - ERROR_STATE_NONE, - ERROR_STATE_SEEN, - ERROR_STATE_NOTIFIED -} error_state; - -/* We keep several sets of connection wide parameters */ -typedef enum { - /* The settings our peer has asked for (and we have acked) */ - PEER_SETTINGS = 0, - /* The settings we'd like to have */ - LOCAL_SETTINGS, - /* The settings we've published to our peer */ - SENT_SETTINGS, - /* The settings the peer has acked */ - ACKED_SETTINGS, - NUM_SETTING_SETS -} setting_set; - -/* Outstanding ping request data */ -typedef struct { - gpr_uint8 id[8]; - void (*cb)(void *user_data); - void *user_data; -} outstanding_ping; +#define TRANSPORT_FROM_WRITING(tw) \ + ((grpc_chttp2_transport *)((char *)(tw)-offsetof(grpc_chttp2_transport, \ + writing))) -typedef struct { - grpc_status_code status; - gpr_slice debug; -} pending_goaway; +#define TRANSPORT_FROM_PARSING(tw) \ + ((grpc_chttp2_transport *)((char *)(tw)-offsetof(grpc_chttp2_transport, \ + parsing))) -typedef struct { - void (*cb)(void *user_data, int success); - void *user_data; - int success; -} op_closure; +#define TRANSPORT_FROM_GLOBAL(tg) \ + ((grpc_chttp2_transport *)((char *)(tg)-offsetof(grpc_chttp2_transport, \ + global))) -typedef struct { - op_closure *callbacks; - size_t count; - size_t capacity; -} op_closure_array; - -struct transport { - grpc_transport base; /* must be first */ - const grpc_transport_callbacks *cb; - void *cb_user_data; - grpc_endpoint *ep; - grpc_mdctx *metadata_context; - gpr_refcount refs; - gpr_uint8 is_client; - - gpr_mu mu; - gpr_cv cv; - - /* basic state management - what are we doing at the moment? */ - gpr_uint8 reading; - gpr_uint8 writing; - /** are we calling back (via cb) with a channel-level event */ - gpr_uint8 calling_back_channel; - /** are we calling back any grpc_transport_op completion events */ - gpr_uint8 calling_back_ops; - gpr_uint8 destroying; - gpr_uint8 closed; - error_state error_state; - - /* queued callbacks */ - op_closure_array pending_callbacks; - op_closure_array executing_callbacks; - - /* stream indexing */ - gpr_uint32 next_stream_id; - gpr_uint32 last_incoming_stream_id; - - /* settings */ - gpr_uint32 settings[NUM_SETTING_SETS][GRPC_CHTTP2_NUM_SETTINGS]; - gpr_uint32 force_send_settings; /* bitmask of setting indexes to send out */ - gpr_uint8 sent_local_settings; /* have local settings been sent? */ - gpr_uint8 dirtied_local_settings; /* are the local settings dirty? */ - - /* window management */ - gpr_uint32 outgoing_window; - gpr_uint32 incoming_window; - gpr_uint32 connection_window_target; - - /* deframing */ - deframe_transport_state deframe_state; - gpr_uint8 incoming_frame_type; - gpr_uint8 incoming_frame_flags; - gpr_uint8 header_eof; - gpr_uint32 expect_continuation_stream_id; - gpr_uint32 incoming_frame_size; - gpr_uint32 incoming_stream_id; - - /* hpack encoding */ - grpc_chttp2_hpack_compressor hpack_compressor; - - /* various parsers */ - grpc_chttp2_hpack_parser hpack_parser; - /* simple one shot parsers */ - union { - grpc_chttp2_window_update_parser window_update; - grpc_chttp2_settings_parser settings; - grpc_chttp2_ping_parser ping; - grpc_chttp2_rst_stream_parser rst_stream; - } simple_parsers; - - /* goaway */ - grpc_chttp2_goaway_parser goaway_parser; - pending_goaway *pending_goaways; - size_t num_pending_goaways; - size_t cap_pending_goaways; - - /* state for a stream that's not yet been created */ - grpc_stream_op_buffer new_stream_sopb; - - /* stream ops that need to be destroyed, but outside of the lock */ - grpc_stream_op_buffer nuke_later_sopb; - - /* active parser */ - void *parser_data; - stream *incoming_stream; - grpc_chttp2_parse_error (*parser)(void *parser_user_data, - grpc_chttp2_parse_state *state, - gpr_slice slice, int is_last); - - gpr_slice_buffer outbuf; - gpr_slice_buffer qbuf; - - stream_list lists[STREAM_LIST_COUNT]; - grpc_chttp2_stream_map stream_map; - - /* metadata object cache */ - grpc_mdstr *str_grpc_timeout; - - /* pings */ - outstanding_ping *pings; - size_t ping_count; - size_t ping_capacity; - gpr_int64 ping_counter; -}; - -struct stream { - gpr_uint32 id; - - gpr_uint32 incoming_window; - gpr_int64 outgoing_window; - /* when the application requests writes be closed, the write_closed is - 'queued'; when the close is flow controlled into the send path, we are - 'sending' it; when the write has been performed it is 'sent' */ - write_state write_state; - send_closed send_closed; - gpr_uint8 read_closed; - gpr_uint8 cancelled; - - op_closure send_done_closure; - op_closure recv_done_closure; - - stream_link links[STREAM_LIST_COUNT]; - gpr_uint8 included[STREAM_LIST_COUNT]; - - /* incoming metadata */ - grpc_linked_mdelem *incoming_metadata; - size_t incoming_metadata_count; - size_t incoming_metadata_capacity; - grpc_linked_mdelem *old_incoming_metadata; - gpr_timespec incoming_deadline; - - /* sops from application */ - grpc_stream_op_buffer *outgoing_sopb; - grpc_stream_op_buffer *incoming_sopb; - grpc_stream_state *publish_state; - grpc_stream_state published_state; - /* sops that have passed flow control to be written */ - grpc_stream_op_buffer writing_sopb; - - grpc_chttp2_data_parser parser; - - grpc_stream_state callback_state; - grpc_stream_op_buffer callback_sopb; -}; +#define STREAM_FROM_GLOBAL(sg) \ + ((grpc_chttp2_stream *)((char *)(sg)-offsetof(grpc_chttp2_stream, global))) static const grpc_transport_vtable vtable; -static void push_setting(transport *t, grpc_chttp2_setting_id id, - gpr_uint32 value); +static void lock(grpc_chttp2_transport *t); +static void unlock(grpc_chttp2_transport *t); -static int prepare_callbacks(transport *t); -static void run_callbacks(transport *t); -static void call_cb_closed(transport *t, const grpc_transport_callbacks *cb); +static void unlock_check_channel_callbacks(grpc_chttp2_transport *t); +static void unlock_check_read_write_state(grpc_chttp2_transport *t); -static int prepare_write(transport *t); -static void perform_write(transport *t, grpc_endpoint *ep); +/* forward declarations of various callbacks that we'll build closures around */ +static void writing_action(void *t, int iomgr_success_ignored); +static void notify_closed(void *t, int iomgr_success_ignored); -static void lock(transport *t); -static void unlock(transport *t); +/** Set a transport level setting, and push it to our peer */ +static void push_setting(grpc_chttp2_transport *t, grpc_chttp2_setting_id id, + gpr_uint32 value); -static void drop_connection(transport *t); -static void end_all_the_calls(transport *t); +/** Endpoint callback to process incoming data */ +static void recv_data(void *tp, gpr_slice *slices, size_t nslices, + grpc_endpoint_cb_status error); -static stream *stream_list_remove_head(transport *t, stream_list_id id); -static void stream_list_remove(transport *t, stream *s, stream_list_id id); -static void stream_list_add_tail(transport *t, stream *s, stream_list_id id); -static void stream_list_join(transport *t, stream *s, stream_list_id id); +/** Start disconnection chain */ +static void drop_connection(grpc_chttp2_transport *t); -static void cancel_stream_id(transport *t, gpr_uint32 id, - grpc_status_code local_status, - grpc_chttp2_error_code error_code, int send_rst); -static void cancel_stream(transport *t, stream *s, - grpc_status_code local_status, - grpc_chttp2_error_code error_code, - grpc_mdstr *optional_message, int send_rst); -static void finalize_cancellations(transport *t); -static stream *lookup_stream(transport *t, gpr_uint32 id); -static void remove_from_stream_map(transport *t, stream *s); -static void maybe_start_some_streams(transport *t); +/** Perform a transport_op */ +static void perform_op_locked(grpc_chttp2_transport_global *transport_global, + grpc_chttp2_stream_global *stream_global, + grpc_transport_op *op); -static void become_skip_parser(transport *t); +/** Cancel a stream: coming from the transport API */ +static void cancel_from_api(grpc_chttp2_transport_global *transport_global, + grpc_chttp2_stream_global *stream_global, + grpc_status_code status); -static void recv_data(void *tp, gpr_slice *slices, size_t nslices, - grpc_endpoint_cb_status error); +/** Add endpoint from this transport to pollset */ +static void add_to_pollset_locked(grpc_chttp2_transport *t, + grpc_pollset *pollset); -static void schedule_cb(transport *t, op_closure closure, int success); -static void maybe_finish_read(transport *t, stream *s); -static void maybe_join_window_updates(transport *t, stream *s); -static void finish_reads(transport *t); -static void add_to_pollset_locked(transport *t, grpc_pollset *pollset); -static void perform_op_locked(transport *t, stream *s, grpc_transport_op *op); -static void add_metadata_batch(transport *t, stream *s); - -static void flowctl_trace(transport *t, const char *flow, gpr_int32 window, - gpr_uint32 id, gpr_int32 delta) { - gpr_log(GPR_DEBUG, "HTTP:FLOW:%p:%d:%s: %d + %d = %d", t, id, flow, window, - delta, window + delta); -} +/** Start new streams that have been created if we can */ +static void maybe_start_some_streams( + grpc_chttp2_transport_global *transport_global); /* * CONSTRUCTION/DESTRUCTION/REFCOUNTING */ -static void destruct_transport(transport *t) { +static void destruct_transport(grpc_chttp2_transport *t) { size_t i; gpr_mu_lock(&t->mu); GPR_ASSERT(t->ep == NULL); - gpr_slice_buffer_destroy(&t->outbuf); - gpr_slice_buffer_destroy(&t->qbuf); - grpc_chttp2_hpack_parser_destroy(&t->hpack_parser); - grpc_chttp2_hpack_compressor_destroy(&t->hpack_compressor); - grpc_chttp2_goaway_parser_destroy(&t->goaway_parser); + gpr_slice_buffer_destroy(&t->global.qbuf); + + gpr_slice_buffer_destroy(&t->writing.outbuf); + grpc_chttp2_hpack_compressor_destroy(&t->writing.hpack_compressor); - grpc_mdstr_unref(t->str_grpc_timeout); + gpr_slice_buffer_destroy(&t->parsing.qbuf); + grpc_chttp2_hpack_parser_destroy(&t->parsing.hpack_parser); + grpc_chttp2_goaway_parser_destroy(&t->parsing.goaway_parser); + + grpc_mdstr_unref(t->parsing.str_grpc_timeout); 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->stream_map) == 0); + GPR_ASSERT(grpc_chttp2_stream_map_size(&t->parsing_stream_map) == 0); + GPR_ASSERT(grpc_chttp2_stream_map_size(&t->new_stream_map) == 0); - grpc_chttp2_stream_map_destroy(&t->stream_map); + grpc_chttp2_stream_map_destroy(&t->parsing_stream_map); + grpc_chttp2_stream_map_destroy(&t->new_stream_map); gpr_mu_unlock(&t->mu); gpr_mu_destroy(&t->mu); - gpr_cv_destroy(&t->cv); /* callback remaining pings: they're not allowed to call into the transpot, and maybe they hold resources that need to be freed */ - for (i = 0; i < t->ping_count; i++) { - t->pings[i].cb(t->pings[i].user_data); + while (t->global.pings.next != &t->global.pings) { + grpc_chttp2_outstanding_ping *ping = t->global.pings.next; + grpc_iomgr_add_delayed_callback(ping->on_recv, 0); + ping->next->prev = ping->prev; + ping->prev->next = ping->next; + gpr_free(ping); } - gpr_free(t->pings); - - gpr_free(t->pending_callbacks.callbacks); - gpr_free(t->executing_callbacks.callbacks); - - for (i = 0; i < t->num_pending_goaways; i++) { - gpr_slice_unref(t->pending_goaways[i].debug); - } - gpr_free(t->pending_goaways); - - grpc_sopb_destroy(&t->nuke_later_sopb); grpc_mdctx_unref(t->metadata_context); gpr_free(t); } -static void unref_transport(transport *t) { +#ifdef REFCOUNTING_DEBUG +#define REF_TRANSPORT(t, r) ref_transport(t, r, __FILE__, __LINE__) +#define UNREF_TRANSPORT(t, r) unref_transport(t, r, __FILE__, __LINE__) +static void unref_transport(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); + if (!gpr_unref(&t->refs)) return; + destruct_transport(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); + gpr_ref(&t->refs); +} +#else +#define REF_TRANSPORT(t, r) ref_transport(t) +#define UNREF_TRANSPORT(t, r) unref_transport(t) +static void unref_transport(grpc_chttp2_transport *t) { if (!gpr_unref(&t->refs)) return; destruct_transport(t); } -static void ref_transport(transport *t) { gpr_ref(&t->refs); } +static void ref_transport(grpc_chttp2_transport *t) { gpr_ref(&t->refs); } +#endif -static void init_transport(transport *t, grpc_transport_setup_callback setup, - void *arg, const grpc_channel_args *channel_args, +static void init_transport(grpc_chttp2_transport *t, + grpc_transport_setup_callback setup, void *arg, + const grpc_channel_args *channel_args, grpc_endpoint *ep, gpr_slice *slices, size_t nslices, grpc_mdctx *mdctx, int is_client) { size_t i; int j; grpc_transport_setup_result sr; - GPR_ASSERT(strlen(CLIENT_CONNECT_STRING) == CLIENT_CONNECT_STRLEN); + GPR_ASSERT(strlen(GRPC_CHTTP2_CLIENT_CONNECT_STRING) == + GRPC_CHTTP2_CLIENT_CONNECT_STRLEN); memset(t, 0, sizeof(*t)); @@ -486,51 +215,63 @@ static void init_transport(transport *t, grpc_transport_setup_callback setup, /* one ref is for destroy, the other for when ep becomes NULL */ gpr_ref_init(&t->refs, 2); gpr_mu_init(&t->mu); - gpr_cv_init(&t->cv); grpc_mdctx_ref(mdctx); t->metadata_context = mdctx; - t->str_grpc_timeout = + t->endpoint_reading = 1; + t->global.error_state = GRPC_CHTTP2_ERROR_STATE_NONE; + t->global.next_stream_id = is_client ? 1 : 2; + t->global.is_client = is_client; + t->global.outgoing_window = DEFAULT_WINDOW; + t->global.incoming_window = 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.str_grpc_timeout = grpc_mdstr_from_string(t->metadata_context, "grpc-timeout"); - t->reading = 1; - t->error_state = ERROR_STATE_NONE; - t->next_stream_id = is_client ? 1 : 2; - t->is_client = is_client; - t->outgoing_window = DEFAULT_WINDOW; - t->incoming_window = DEFAULT_WINDOW; - t->connection_window_target = DEFAULT_CONNECTION_WINDOW_TARGET; - t->deframe_state = is_client ? DTS_FH_0 : DTS_CLIENT_PREFIX_0; - t->ping_counter = gpr_now().tv_nsec; - grpc_chttp2_hpack_compressor_init(&t->hpack_compressor, mdctx); - grpc_chttp2_goaway_parser_init(&t->goaway_parser); - gpr_slice_buffer_init(&t->outbuf); - gpr_slice_buffer_init(&t->qbuf); - grpc_sopb_init(&t->nuke_later_sopb); - grpc_chttp2_hpack_parser_init(&t->hpack_parser, t->metadata_context); + t->parsing.deframe_state = is_client ? DTS_FH_0 : DTS_CLIENT_PREFIX_0; + t->writing.is_client = is_client; + + gpr_slice_buffer_init(&t->global.qbuf); + + gpr_slice_buffer_init(&t->writing.outbuf); + grpc_chttp2_hpack_compressor_init(&t->writing.hpack_compressor, mdctx); + grpc_iomgr_closure_init(&t->writing_action, writing_action, 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, t->metadata_context); + + grpc_iomgr_closure_init(&t->channel_callback.notify_closed, notify_closed, t); if (is_client) { - gpr_slice_buffer_add(&t->qbuf, - gpr_slice_from_copied_string(CLIENT_CONNECT_STRING)); + gpr_slice_buffer_add( + &t->global.qbuf, + gpr_slice_from_copied_string(GRPC_CHTTP2_CLIENT_CONNECT_STRING)); } /* 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->stream_map, 8); + grpc_chttp2_stream_map_init(&t->parsing_stream_map, 8); + grpc_chttp2_stream_map_init(&t->new_stream_map, 8); /* copy in initial settings to all setting sets */ - for (i = 0; i < NUM_SETTING_SETS; i++) { - for (j = 0; j < GRPC_CHTTP2_NUM_SETTINGS; j++) { - t->settings[i][j] = grpc_chttp2_settings_parameters[j].default_value; + for (i = 0; i < GRPC_CHTTP2_NUM_SETTINGS; i++) { + t->parsing.settings[i] = grpc_chttp2_settings_parameters[i].default_value; + for (j = 0; j < NUM_SETTING_SETS; j++) { + t->global.settings[j][i] = + grpc_chttp2_settings_parameters[i].default_value; } } - t->dirtied_local_settings = 1; + t->global.dirtied_local_settings = 1; /* Hack: it's common for implementations to assume 65536 bytes initial send window -- this should by rights be 0 */ - t->force_send_settings = 1 << GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE; - t->sent_local_settings = 0; + t->global.force_send_settings = 1 << GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE; + t->global.sent_local_settings = 0; /* configure http2 the way we like it */ - if (t->is_client) { + if (is_client) { push_setting(t, GRPC_CHTTP2_SETTINGS_ENABLE_PUSH, 0); push_setting(t, GRPC_CHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS, 0); } @@ -540,7 +281,7 @@ static void init_transport(transport *t, grpc_transport_setup_callback setup, for (i = 0; i < channel_args->num_args; i++) { if (0 == strcmp(channel_args->args[i].key, GRPC_ARG_MAX_CONCURRENT_STREAMS)) { - if (t->is_client) { + if (is_client) { gpr_log(GPR_ERROR, "%s: is ignored on the client", GRPC_ARG_MAX_CONCURRENT_STREAMS); } else if (channel_args->args[i].type != GRPC_ARG_INTEGER) { @@ -555,357 +296,219 @@ static void init_transport(transport *t, grpc_transport_setup_callback setup, 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->next_stream_id & 1) != + } else if ((t->global.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->next_stream_id & 1, - t->is_client ? "client" : "server"); + GRPC_ARG_HTTP2_INITIAL_SEQUENCE_NUMBER, + t->global.next_stream_id & 1, + is_client ? "client" : "server"); } else { - t->next_stream_id = channel_args->args[i].value.integer; + t->global.next_stream_id = channel_args->args[i].value.integer; } } } } gpr_mu_lock(&t->mu); - t->calling_back_channel = 1; - ref_transport(t); /* matches unref at end of this function */ + t->channel_callback.executing = 1; + REF_TRANSPORT(t, "init"); /* matches unref at end of this function */ gpr_mu_unlock(&t->mu); sr = setup(arg, &t->base, t->metadata_context); lock(t); - t->cb = sr.callbacks; - t->cb_user_data = sr.user_data; - t->calling_back_channel = 0; - if (t->destroying) gpr_cv_signal(&t->cv); + t->channel_callback.cb = sr.callbacks; + t->channel_callback.cb_user_data = sr.user_data; + t->channel_callback.executing = 0; unlock(t); - ref_transport(t); /* matches unref inside recv_data */ + REF_TRANSPORT(t, "recv_data"); /* matches unref inside recv_data */ recv_data(t, slices, nslices, GRPC_ENDPOINT_CB_OK); - unref_transport(t); + UNREF_TRANSPORT(t, "init"); } static void destroy_transport(grpc_transport *gt) { - transport *t = (transport *)gt; + grpc_chttp2_transport *t = (grpc_chttp2_transport *)gt; lock(t); t->destroying = 1; - /* Wait for pending stuff to finish. - We need to be not calling back to ensure that closed() gets a chance to - trigger if needed during unlock() before we die. - We need to be not writing as cancellation finalization may produce some - callbacks that NEED to be made to close out some streams when t->writing - becomes 0. */ - while (t->calling_back_channel || t->writing) { - gpr_cv_wait(&t->cv, &t->mu, gpr_inf_future); - } drop_connection(t); unlock(t); - /* The drop_connection() above puts the transport into an error state, and - the follow-up unlock should then (as part of the cleanup work it does) - ensure that cb is NULL, and therefore not call back anything further. - This check validates this very subtle behavior. - It's shutdown path, so I don't believe an extra lock pair is going to be - problematic for performance. */ - lock(t); - GPR_ASSERT(!t->cb); - unlock(t); + UNREF_TRANSPORT(t, "destroy"); +} - unref_transport(t); +static void close_transport_locked(grpc_chttp2_transport *t) { + if (!t->closed) { + t->closed = 1; + if (t->ep) { + grpc_endpoint_shutdown(t->ep); + } + } } static void close_transport(grpc_transport *gt) { - transport *t = (transport *)gt; + grpc_chttp2_transport *t = (grpc_chttp2_transport *)gt; gpr_mu_lock(&t->mu); - GPR_ASSERT(!t->closed); - t->closed = 1; - if (t->ep) { - grpc_endpoint_shutdown(t->ep); - } + close_transport_locked(t); gpr_mu_unlock(&t->mu); } static void goaway(grpc_transport *gt, grpc_status_code status, gpr_slice debug_data) { - transport *t = (transport *)gt; + grpc_chttp2_transport *t = (grpc_chttp2_transport *)gt; lock(t); - grpc_chttp2_goaway_append(t->last_incoming_stream_id, + grpc_chttp2_goaway_append(t->global.last_incoming_stream_id, grpc_chttp2_grpc_status_to_http2_error(status), - debug_data, &t->qbuf); + debug_data, &t->global.qbuf); unlock(t); } static int init_stream(grpc_transport *gt, grpc_stream *gs, const void *server_data, grpc_transport_op *initial_op) { - transport *t = (transport *)gt; - stream *s = (stream *)gs; + grpc_chttp2_transport *t = (grpc_chttp2_transport *)gt; + grpc_chttp2_stream *s = (grpc_chttp2_stream *)gs; memset(s, 0, sizeof(*s)); - ref_transport(t); + grpc_chttp2_incoming_metadata_buffer_init(&s->parsing.incoming_metadata); + grpc_chttp2_incoming_metadata_buffer_init(&s->global.incoming_metadata); + grpc_sopb_init(&s->writing.sopb); + grpc_sopb_init(&s->global.incoming_sopb); + grpc_chttp2_data_parser_init(&s->parsing.data_parser); - if (!server_data) { - lock(t); - s->id = 0; - s->outgoing_window = 0; - s->incoming_window = 0; - } else { - /* already locked */ - s->id = (gpr_uint32)(gpr_uintptr)server_data; - s->outgoing_window = - t->settings[PEER_SETTINGS][GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE]; - s->incoming_window = - t->settings[SENT_SETTINGS][GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE]; - t->incoming_stream = s; - grpc_chttp2_stream_map_add(&t->stream_map, s->id, s); - } + REF_TRANSPORT(t, "stream"); - s->incoming_deadline = gpr_inf_future; - grpc_sopb_init(&s->writing_sopb); - grpc_sopb_init(&s->callback_sopb); - grpc_chttp2_data_parser_init(&s->parser); - - if (initial_op) perform_op_locked(t, s, initial_op); - - if (!server_data) { - unlock(t); - } + lock(t); + grpc_chttp2_register_stream(t, s); + if (server_data) { + GPR_ASSERT(t->parsing_active); + s->global.id = (gpr_uint32)(gpr_uintptr)server_data; + s->global.outgoing_window = + t->global + .settings[PEER_SETTINGS][GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE]; + s->parsing.incoming_window = s->global.incoming_window = + t->global + .settings[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 = 1; + } + + if (initial_op) perform_op_locked(&t->global, &s->global, initial_op); + unlock(t); return 0; } -static void schedule_nuke_sopb(transport *t, grpc_stream_op_buffer *sopb) { - grpc_sopb_append(&t->nuke_later_sopb, sopb->ops, sopb->nops); - sopb->nops = 0; -} - static void destroy_stream(grpc_transport *gt, grpc_stream *gs) { - transport *t = (transport *)gt; - stream *s = (stream *)gs; - size_t i; + grpc_chttp2_transport *t = (grpc_chttp2_transport *)gt; + grpc_chttp2_stream *s = (grpc_chttp2_stream *)gs; + int i; gpr_mu_lock(&t->mu); - /* stop parsing if we're currently parsing this stream */ - if (t->deframe_state == DTS_FRAME && t->incoming_stream_id == s->id && - s->id != 0) { - become_skip_parser(t); + GPR_ASSERT(s->global.published_state == GRPC_STREAM_CLOSED || + s->global.id == 0); + GPR_ASSERT(!s->global.in_stream_map); + grpc_chttp2_unregister_stream(t, s); + if (!t->parsing_active && s->global.id) { + GPR_ASSERT(grpc_chttp2_stream_map_find(&t->parsing_stream_map, + s->global.id) == NULL); } - for (i = 0; i < STREAM_LIST_COUNT; i++) { - stream_list_remove(t, s, i); - } - remove_from_stream_map(t, s); + grpc_chttp2_list_remove_incoming_window_updated(&t->global, &s->global); gpr_mu_unlock(&t->mu); - GPR_ASSERT(s->outgoing_sopb == NULL); - GPR_ASSERT(s->incoming_sopb == NULL); - grpc_sopb_destroy(&s->writing_sopb); - grpc_sopb_destroy(&s->callback_sopb); - grpc_chttp2_data_parser_destroy(&s->parser); - for (i = 0; i < s->incoming_metadata_count; i++) { - grpc_mdelem_unref(s->incoming_metadata[i].md); + for (i = 0; i < STREAM_LIST_COUNT; i++) { + GPR_ASSERT(!s->included[i]); } - gpr_free(s->incoming_metadata); - gpr_free(s->old_incoming_metadata); - unref_transport(t); -} - -/* - * LIST MANAGEMENT - */ - -static int stream_list_empty(transport *t, stream_list_id id) { - return t->lists[id].head == NULL; -} - -static stream *stream_list_remove_head(transport *t, stream_list_id id) { - stream *s = t->lists[id].head; - if (s) { - stream *new_head = s->links[id].next; - GPR_ASSERT(s->included[id]); - if (new_head) { - t->lists[id].head = new_head; - new_head->links[id].prev = NULL; - } else { - t->lists[id].head = NULL; - t->lists[id].tail = NULL; - } - s->included[id] = 0; - } - return s; -} + GPR_ASSERT(s->global.outgoing_sopb == NULL); + GPR_ASSERT(s->global.publish_sopb == NULL); + grpc_sopb_destroy(&s->writing.sopb); + grpc_chttp2_data_parser_destroy(&s->parsing.data_parser); + grpc_chttp2_incoming_metadata_buffer_destroy(&s->parsing.incoming_metadata); + grpc_chttp2_incoming_metadata_buffer_destroy(&s->global.incoming_metadata); -static void stream_list_remove(transport *t, stream *s, stream_list_id id) { - if (!s->included[id]) return; - s->included[id] = 0; - if (s->links[id].prev) { - s->links[id].prev->links[id].next = s->links[id].next; - } else { - GPR_ASSERT(t->lists[id].head == s); - t->lists[id].head = s->links[id].next; - } - if (s->links[id].next) { - s->links[id].next->links[id].prev = s->links[id].prev; - } else { - t->lists[id].tail = s->links[id].prev; - } + UNREF_TRANSPORT(t, "stream"); } -static void stream_list_add_tail(transport *t, stream *s, stream_list_id id) { - stream *old_tail; - GPR_ASSERT(!s->included[id]); - old_tail = t->lists[id].tail; - s->links[id].next = NULL; - s->links[id].prev = old_tail; - if (old_tail) { - old_tail->links[id].next = s; - } else { - s->links[id].prev = NULL; - t->lists[id].head = s; - } - t->lists[id].tail = s; - s->included[id] = 1; +grpc_chttp2_stream_parsing *grpc_chttp2_parsing_lookup_stream( + grpc_chttp2_transport_parsing *transport_parsing, gpr_uint32 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; } -static void stream_list_join(transport *t, stream *s, stream_list_id id) { - if (s->included[id]) { - return; - } - stream_list_add_tail(t, s, id); +grpc_chttp2_stream_parsing *grpc_chttp2_parsing_accept_stream( + grpc_chttp2_transport_parsing *transport_parsing, gpr_uint32 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.cb->accept_stream(t->channel_callback.cb_user_data, + &t->base, (void *)(gpr_uintptr)id); + t->accepting_stream = NULL; + return &accepting->parsing; } -static void remove_from_stream_map(transport *t, stream *s) { - if (s->id == 0) return; - IF_TRACING(gpr_log(GPR_DEBUG, "HTTP:%s: Removing stream %d", - t->is_client ? "CLI" : "SVR", s->id)); - if (grpc_chttp2_stream_map_delete(&t->stream_map, s->id)) { +#if 0 +static void remove_from_stream_map(grpc_chttp2_transport *t, grpc_chttp2_stream *s) { + if (s->global.id == 0) return; + IF_TRACING(gpr_log(GPR_DEBUG, "HTTP:%s: Removing grpc_chttp2_stream %d", + t->global.is_client ? "CLI" : "SVR", s->global.id)); + if (grpc_chttp2_stream_map_delete(&t->stream_map, s->global.id)) { maybe_start_some_streams(t); } } +#endif /* * LOCK MANAGEMENT */ -/* We take a transport-global lock in response to calls coming in from above, +/* We take a grpc_chttp2_transport-global lock in response to calls coming in + from above, and in response to data being received from below. New data to be written is always queued, as are callbacks to process data. During unlock() we check our todo lists and initiate callbacks and flush writes. */ -static void lock(transport *t) { gpr_mu_lock(&t->mu); } +static void lock(grpc_chttp2_transport *t) { gpr_mu_lock(&t->mu); } -static void unlock(transport *t) { - int start_write = 0; - int perform_callbacks = 0; - int call_closed = 0; - int num_goaways = 0; - int i; - pending_goaway *goaways = NULL; - grpc_endpoint *ep = t->ep; - grpc_stream_op_buffer nuke_now; - const grpc_transport_callbacks *cb = t->cb; - - GRPC_TIMER_BEGIN(GRPC_PTAG_HTTP2_UNLOCK, 0); +static void unlock(grpc_chttp2_transport *t) { + grpc_iomgr_closure *run_closures; - grpc_sopb_init(&nuke_now); - if (t->nuke_later_sopb.nops) { - grpc_sopb_swap(&nuke_now, &t->nuke_later_sopb); + unlock_check_read_write_state(t); + if (!t->writing_active && t->global.error_state == GRPC_CHTTP2_ERROR_STATE_NONE && + grpc_chttp2_unlocking_check_writes(&t->global, &t->writing)) { + t->writing_active = 1; + REF_TRANSPORT(t, "writing"); + grpc_chttp2_schedule_closure(&t->global, &t->writing_action, 1); } + /* unlock_check_parser(t); */ + unlock_check_channel_callbacks(t); - /* see if we need to trigger a write - and if so, get the data ready */ - if (ep && !t->writing) { - t->writing = start_write = prepare_write(t); - if (start_write) { - ref_transport(t); - } - } - - if (!t->writing) { - finalize_cancellations(t); - } - - finish_reads(t); - - /* gather any callbacks that need to be made */ - if (!t->calling_back_ops) { - t->calling_back_ops = perform_callbacks = prepare_callbacks(t); - if (perform_callbacks) ref_transport(t); - } - - if (!t->calling_back_channel && cb) { - if (t->error_state == ERROR_STATE_SEEN && !t->writing) { - call_closed = 1; - t->calling_back_channel = 1; - t->cb = NULL; /* no more callbacks */ - t->error_state = ERROR_STATE_NOTIFIED; - } - if (t->num_pending_goaways) { - goaways = t->pending_goaways; - num_goaways = t->num_pending_goaways; - t->pending_goaways = NULL; - t->num_pending_goaways = 0; - t->cap_pending_goaways = 0; - t->calling_back_channel = 1; - } - if (call_closed || num_goaways) { - ref_transport(t); - } - } + run_closures = t->global.pending_closures; + t->global.pending_closures = NULL; - /* finally unlock */ gpr_mu_unlock(&t->mu); - GRPC_TIMER_MARK(GRPC_PTAG_HTTP2_UNLOCK_CLEANUP, 0); - - /* perform some callbacks if necessary */ - for (i = 0; i < num_goaways; i++) { - cb->goaway(t->cb_user_data, &t->base, goaways[i].status, goaways[i].debug); - } - - if (perform_callbacks) { - run_callbacks(t); - lock(t); - t->calling_back_ops = 0; - unlock(t); - unref_transport(t); - } - - if (call_closed) { - call_cb_closed(t, cb); - } - - /* write some bytes if necessary */ - if (start_write) { - /* ultimately calls unref_transport(t); and clears t->writing */ - perform_write(t, ep); - } - - if (call_closed || num_goaways) { - lock(t); - t->calling_back_channel = 0; - if (t->destroying) gpr_cv_signal(&t->cv); - unlock(t); - unref_transport(t); + while (run_closures) { + grpc_iomgr_closure *next = run_closures->next; + run_closures->cb(run_closures->cb_arg, run_closures->success); + run_closures = next; } - - grpc_sopb_destroy(&nuke_now); - - gpr_free(goaways); - - GRPC_TIMER_END(GRPC_PTAG_HTTP2_UNLOCK, 0); } /* * OUTPUT PROCESSING */ -static void push_setting(transport *t, grpc_chttp2_setting_id id, +static void push_setting(grpc_chttp2_transport *t, grpc_chttp2_setting_id id, gpr_uint32 value) { const grpc_chttp2_setting_parameters *sp = &grpc_chttp2_settings_parameters[id]; @@ -914,292 +517,196 @@ static void push_setting(transport *t, grpc_chttp2_setting_id id, gpr_log(GPR_INFO, "Requested parameter %s clamped from %d to %d", sp->name, value, use_value); } - if (use_value != t->settings[LOCAL_SETTINGS][id]) { - t->settings[LOCAL_SETTINGS][id] = use_value; - t->dirtied_local_settings = 1; + if (use_value != t->global.settings[LOCAL_SETTINGS][id]) { + t->global.settings[LOCAL_SETTINGS][id] = use_value; + t->global.dirtied_local_settings = 1; } } -static int prepare_write(transport *t) { - stream *s; - gpr_uint32 window_delta; - - /* simple writes are queued to qbuf, and flushed here */ - gpr_slice_buffer_swap(&t->qbuf, &t->outbuf); - GPR_ASSERT(t->qbuf.count == 0); - - if (t->dirtied_local_settings && !t->sent_local_settings) { - gpr_slice_buffer_add( - &t->outbuf, grpc_chttp2_settings_create( - t->settings[SENT_SETTINGS], t->settings[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; - } - - /* for each stream that's become writable, frame it's data (according to - available window sizes) and add to the output buffer */ - while (t->outgoing_window && (s = stream_list_remove_head(t, WRITABLE)) && - s->outgoing_window > 0) { - window_delta = grpc_chttp2_preencode( - s->outgoing_sopb->ops, &s->outgoing_sopb->nops, - GPR_MIN(t->outgoing_window, s->outgoing_window), &s->writing_sopb); - FLOWCTL_TRACE(t, t, outgoing, 0, -(gpr_int64)window_delta); - FLOWCTL_TRACE(t, s, outgoing, s->id, -(gpr_int64)window_delta); - t->outgoing_window -= window_delta; - s->outgoing_window -= window_delta; - - if (s->write_state == WRITE_STATE_QUEUED_CLOSE && - s->outgoing_sopb->nops == 0) { - if (!t->is_client && !s->read_closed) { - s->send_closed = SEND_CLOSED_WITH_RST_STREAM; - } else { - s->send_closed = SEND_CLOSED; - } - } - if (s->writing_sopb.nops > 0 || s->send_closed) { - stream_list_join(t, s, WRITING); - } - - /* we should either exhaust window or have no ops left, but not both */ - if (s->outgoing_sopb->nops == 0) { - s->outgoing_sopb = NULL; - schedule_cb(t, s->send_done_closure, 1); - } else if (s->outgoing_window) { - stream_list_add_tail(t, s, WRITABLE); - } - } - - /* for each stream that wants to update its window, add that window here */ - while ((s = stream_list_remove_head(t, WINDOW_UPDATE))) { - window_delta = - t->settings[LOCAL_SETTINGS][GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE] - - s->incoming_window; - if (!s->read_closed && window_delta) { - gpr_slice_buffer_add( - &t->outbuf, grpc_chttp2_window_update_create(s->id, window_delta)); - FLOWCTL_TRACE(t, s, incoming, s->id, window_delta); - s->incoming_window += window_delta; - } - } - - /* if the transport is ready to send a window update, do so here also */ - if (t->incoming_window < t->connection_window_target * 3 / 4) { - window_delta = t->connection_window_target - t->incoming_window; - gpr_slice_buffer_add(&t->outbuf, - grpc_chttp2_window_update_create(0, window_delta)); - FLOWCTL_TRACE(t, t, incoming, 0, window_delta); - t->incoming_window += window_delta; - } - - return t->outbuf.length > 0 || !stream_list_empty(t, WRITING); -} - -static void finalize_outbuf(transport *t) { - stream *s; - - while ((s = stream_list_remove_head(t, WRITING))) { - grpc_chttp2_encode(s->writing_sopb.ops, s->writing_sopb.nops, - s->send_closed != DONT_SEND_CLOSED, s->id, &t->hpack_compressor, &t->outbuf); - s->writing_sopb.nops = 0; - if (s->send_closed == SEND_CLOSED_WITH_RST_STREAM) { - gpr_slice_buffer_add(&t->outbuf, grpc_chttp2_rst_stream_create(s->id, GRPC_CHTTP2_NO_ERROR)); - } - if (s->send_closed != DONT_SEND_CLOSED) { - stream_list_join(t, s, WRITTEN_CLOSED); - } - } -} - -static void finish_write_common(transport *t, int success) { - stream *s; +void grpc_chttp2_terminate_writing( + grpc_chttp2_transport_writing *transport_writing, int success) { + grpc_chttp2_transport *t = TRANSPORT_FROM_WRITING(transport_writing); lock(t); + if (!success) { drop_connection(t); } - while ((s = stream_list_remove_head(t, WRITTEN_CLOSED))) { - s->write_state = WRITE_STATE_SENT_CLOSE; - if (!t->is_client) { - s->read_closed = 1; - } - maybe_finish_read(t, s); - } - t->outbuf.count = 0; - t->outbuf.length = 0; + + /* cleanup writing related jazz */ + grpc_chttp2_cleanup_writing(&t->global, &t->writing); + /* leave the writing flag up on shutdown to prevent further writes in unlock() from starting */ - t->writing = 0; - if (t->destroying) { - gpr_cv_signal(&t->cv); - } - if (!t->reading) { + t->writing_active = 0; + if (t->ep && !t->endpoint_reading) { grpc_endpoint_destroy(t->ep); t->ep = NULL; - unref_transport(t); /* safe because we'll still have the ref for write */ + UNREF_TRANSPORT( + t, "disconnect"); /* safe because we'll still have the ref for write */ } - unlock(t); - - unref_transport(t); -} -static void finish_write(void *tp, grpc_endpoint_cb_status error) { - transport *t = tp; - finish_write_common(t, error == GRPC_ENDPOINT_CB_OK); -} - -static void perform_write(transport *t, grpc_endpoint *ep) { - finalize_outbuf(t); - - GPR_ASSERT(t->outbuf.count > 0); + unlock(t); - switch (grpc_endpoint_write(ep, t->outbuf.slices, t->outbuf.count, - finish_write, t)) { - case GRPC_ENDPOINT_WRITE_DONE: - finish_write_common(t, 1); - break; - case GRPC_ENDPOINT_WRITE_ERROR: - finish_write_common(t, 0); - break; - case GRPC_ENDPOINT_WRITE_PENDING: - break; - } + UNREF_TRANSPORT(t, "writing"); } -static void add_goaway(transport *t, gpr_uint32 goaway_error, gpr_slice goaway_text) { - if (t->num_pending_goaways == t->cap_pending_goaways) { - t->cap_pending_goaways = GPR_MAX(1, t->cap_pending_goaways * 2); - t->pending_goaways = - gpr_realloc(t->pending_goaways, - sizeof(pending_goaway) * t->cap_pending_goaways); - } - t->pending_goaways[t->num_pending_goaways].status = - grpc_chttp2_http2_error_to_grpc_status(goaway_error); - t->pending_goaways[t->num_pending_goaways].debug = goaway_text; - t->num_pending_goaways++; +static void writing_action(void *gt, int iomgr_success_ignored) { + grpc_chttp2_transport *t = gt; + grpc_chttp2_perform_writes(&t->writing, t->ep); } - -static void maybe_start_some_streams(transport *t) { - /* start streams where we have free stream ids and free concurrency */ - while ( - t->next_stream_id <= MAX_CLIENT_STREAM_ID && - grpc_chttp2_stream_map_size(&t->stream_map) < - t->settings[PEER_SETTINGS][GRPC_CHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS]) { - stream *s = stream_list_remove_head(t, WAITING_FOR_CONCURRENCY); - if (!s) return; - - IF_TRACING(gpr_log(GPR_DEBUG, "HTTP:%s: Allocating new stream %p to id %d", - t->is_client ? "CLI" : "SVR", s, t->next_stream_id)); - - if (t->next_stream_id == MAX_CLIENT_STREAM_ID) { - add_goaway(t, GRPC_CHTTP2_NO_ERROR, gpr_slice_from_copied_string("Exceeded sequence number limit")); +void grpc_chttp2_add_incoming_goaway( + grpc_chttp2_transport_global *transport_global, gpr_uint32 goaway_error, + gpr_slice goaway_text) { + char *msg = gpr_hexdump((char*)GPR_SLICE_START_PTR(goaway_text), GPR_SLICE_LENGTH(goaway_text), GPR_HEXDUMP_PLAINTEXT); + gpr_log(GPR_DEBUG, "add goaway: st=%d err=%d text=%s", transport_global->goaway_state, goaway_error, msg); + gpr_free(msg); + if (transport_global->goaway_state == GRPC_CHTTP2_ERROR_STATE_NONE) { + transport_global->goaway_state = GRPC_CHTTP2_ERROR_STATE_SEEN; + transport_global->goaway_text = goaway_text; + transport_global->goaway_error = goaway_error; + } else { + gpr_slice_unref(goaway_text); + } +} + +static void maybe_start_some_streams( + grpc_chttp2_transport_global *transport_global) { + grpc_chttp2_stream_global *stream_global; + gpr_log(GPR_DEBUG, "nextid=%d count=%d", transport_global->next_stream_id, transport_global->concurrent_stream_count); + /* 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 + [PEER_SETTINGS][GRPC_CHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS] && + grpc_chttp2_list_pop_waiting_for_concurrency(transport_global, + &stream_global)) { + 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)); + + GPR_ASSERT(stream_global->id == 0); + stream_global->id = transport_global->next_stream_id; + transport_global->next_stream_id += 2; + + if (transport_global->next_stream_id >= MAX_CLIENT_STREAM_ID) { + grpc_chttp2_add_incoming_goaway( + transport_global, GRPC_CHTTP2_NO_ERROR, + gpr_slice_from_copied_string("Exceeded sequence number limit")); } - GPR_ASSERT(s->id == 0); - s->id = t->next_stream_id; - t->next_stream_id += 2; - s->outgoing_window = - t->settings[PEER_SETTINGS][GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE]; - s->incoming_window = - t->settings[SENT_SETTINGS][GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE]; - grpc_chttp2_stream_map_add(&t->stream_map, s->id, s); - stream_list_join(t, s, WRITABLE); + stream_global->outgoing_window = + transport_global + ->settings[PEER_SETTINGS][GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE]; + stream_global->incoming_window = + transport_global + ->settings[SENT_SETTINGS][GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE]; + 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 = 1; + transport_global->concurrent_stream_count++; + grpc_chttp2_list_add_incoming_window_updated(transport_global, + stream_global); + grpc_chttp2_list_add_writable_stream(transport_global, stream_global); } /* cancel out streams that will never be started */ - while (t->next_stream_id > MAX_CLIENT_STREAM_ID) { - stream *s = stream_list_remove_head(t, WAITING_FOR_CONCURRENCY); - if (!s) return; - - cancel_stream(t, s, GRPC_STATUS_UNAVAILABLE, grpc_chttp2_grpc_status_to_http2_error(GRPC_STATUS_UNAVAILABLE), NULL, 0); + while (transport_global->next_stream_id >= MAX_CLIENT_STREAM_ID && + grpc_chttp2_list_pop_waiting_for_concurrency(transport_global, + &stream_global)) { + cancel_from_api(transport_global, stream_global, GRPC_STATUS_UNAVAILABLE); } } -static void perform_op_locked(transport *t, stream *s, grpc_transport_op *op) { +static void perform_op_locked(grpc_chttp2_transport_global *transport_global, + grpc_chttp2_stream_global *stream_global, + grpc_transport_op *op) { if (op->cancel_with_status != GRPC_STATUS_OK) { - cancel_stream( - t, s, op->cancel_with_status, - grpc_chttp2_grpc_status_to_http2_error(op->cancel_with_status), - op->cancel_message, 1); + cancel_from_api(transport_global, stream_global, op->cancel_with_status); } if (op->send_ops) { - GPR_ASSERT(s->outgoing_sopb == NULL); - s->send_done_closure.cb = op->on_done_send; - s->send_done_closure.user_data = op->send_user_data; - if (!s->cancelled) { - s->outgoing_sopb = op->send_ops; - if (op->is_last_send && s->write_state == WRITE_STATE_OPEN) { - s->write_state = WRITE_STATE_QUEUED_CLOSE; + GPR_ASSERT(stream_global->outgoing_sopb == NULL); + stream_global->send_done_closure = op->on_done_send; + if (!stream_global->cancelled) { + stream_global->outgoing_sopb = op->send_ops; + if (op->is_last_send && stream_global->write_state == WRITE_STATE_OPEN) { + stream_global->write_state = WRITE_STATE_QUEUED_CLOSE; } - if (s->id == 0) { - IF_TRACING(gpr_log(GPR_DEBUG, - "HTTP:%s: New stream %p waiting for concurrency", - t->is_client ? "CLI" : "SVR", s)); - stream_list_join(t, s, WAITING_FOR_CONCURRENCY); - maybe_start_some_streams(t); - } else if (s->outgoing_window > 0) { - stream_list_join(t, s, WRITABLE); + if (stream_global->id == 0) { + IF_TRACING(gpr_log( + GPR_DEBUG, + "HTTP:%s: New grpc_chttp2_stream %p waiting for concurrency", + transport_global->is_client ? "CLI" : "SVR", stream_global)); + grpc_chttp2_list_add_waiting_for_concurrency(transport_global, + stream_global); + maybe_start_some_streams(transport_global); + } else if (stream_global->outgoing_window > 0) { + grpc_chttp2_list_add_writable_stream(transport_global, stream_global); } } else { - schedule_nuke_sopb(t, op->send_ops); - schedule_cb(t, s->send_done_closure, 0); + grpc_sopb_reset(op->send_ops); + grpc_chttp2_schedule_closure(transport_global, + stream_global->send_done_closure, 0); } } if (op->recv_ops) { - GPR_ASSERT(s->incoming_sopb == NULL); - GPR_ASSERT(s->published_state != GRPC_STREAM_CLOSED); - s->recv_done_closure.cb = op->on_done_recv; - s->recv_done_closure.user_data = op->recv_user_data; - s->incoming_sopb = op->recv_ops; - s->incoming_sopb->nops = 0; - s->publish_state = op->recv_state; - gpr_free(s->old_incoming_metadata); - s->old_incoming_metadata = NULL; - maybe_finish_read(t, s); - maybe_join_window_updates(t, s); + GPR_ASSERT(stream_global->publish_sopb == NULL); + GPR_ASSERT(stream_global->published_state != GRPC_STREAM_CLOSED); + stream_global->recv_done_closure = op->on_done_recv; + stream_global->publish_sopb = op->recv_ops; + stream_global->publish_sopb->nops = 0; + stream_global->publish_state = op->recv_state; + grpc_chttp2_incoming_metadata_live_op_buffer_end( + &stream_global->outstanding_metadata); + grpc_chttp2_list_add_read_write_state_changed(transport_global, + stream_global); + grpc_chttp2_list_add_writable_window_update_stream(transport_global, + stream_global); } if (op->bind_pollset) { - add_to_pollset_locked(t, op->bind_pollset); + add_to_pollset_locked(TRANSPORT_FROM_GLOBAL(transport_global), + op->bind_pollset); + } + + if (op->on_consumed) { + grpc_chttp2_schedule_closure(transport_global, op->on_consumed, 1); } } static void perform_op(grpc_transport *gt, grpc_stream *gs, grpc_transport_op *op) { - transport *t = (transport *)gt; - stream *s = (stream *)gs; + grpc_chttp2_transport *t = (grpc_chttp2_transport *)gt; + grpc_chttp2_stream *s = (grpc_chttp2_stream *)gs; lock(t); - perform_op_locked(t, s, op); + perform_op_locked(&t->global, &s->global, op); unlock(t); } -static void send_ping(grpc_transport *gt, void (*cb)(void *user_data), - void *user_data) { - transport *t = (transport *)gt; - outstanding_ping *p; +static void send_ping(grpc_transport *gt, grpc_iomgr_closure *on_recv) { + grpc_chttp2_transport *t = (grpc_chttp2_transport *)gt; + grpc_chttp2_outstanding_ping *p = gpr_malloc(sizeof(*p)); lock(t); - if (t->ping_capacity == t->ping_count) { - t->ping_capacity = GPR_MAX(1, t->ping_capacity * 3 / 2); - t->pings = - gpr_realloc(t->pings, sizeof(outstanding_ping) * t->ping_capacity); - } - p = &t->pings[t->ping_count++]; - p->id[0] = (t->ping_counter >> 56) & 0xff; - p->id[1] = (t->ping_counter >> 48) & 0xff; - p->id[2] = (t->ping_counter >> 40) & 0xff; - p->id[3] = (t->ping_counter >> 32) & 0xff; - p->id[4] = (t->ping_counter >> 24) & 0xff; - p->id[5] = (t->ping_counter >> 16) & 0xff; - p->id[6] = (t->ping_counter >> 8) & 0xff; - p->id[7] = t->ping_counter & 0xff; - p->cb = cb; - p->user_data = user_data; - gpr_slice_buffer_add(&t->qbuf, grpc_chttp2_ping_create(0, p->id)); + p->next = &t->global.pings; + p->prev = p->next->prev; + p->prev->next = p->next->prev = p; + p->id[0] = (t->global.ping_counter >> 56) & 0xff; + p->id[1] = (t->global.ping_counter >> 48) & 0xff; + p->id[2] = (t->global.ping_counter >> 40) & 0xff; + p->id[3] = (t->global.ping_counter >> 32) & 0xff; + p->id[4] = (t->global.ping_counter >> 24) & 0xff; + p->id[5] = (t->global.ping_counter >> 16) & 0xff; + p->id[6] = (t->global.ping_counter >> 8) & 0xff; + p->id[7] = t->global.ping_counter & 0xff; + p->on_recv = on_recv; + gpr_slice_buffer_add(&t->global.qbuf, grpc_chttp2_ping_create(0, p->id)); unlock(t); } @@ -1207,44 +714,149 @@ static void send_ping(grpc_transport *gt, void (*cb)(void *user_data), * INPUT PROCESSING */ -static void finalize_cancellations(transport *t) { - stream *s; - - while ((s = stream_list_remove_head(t, CANCELLED))) { - s->read_closed = 1; - s->write_state = WRITE_STATE_SENT_CLOSE; - maybe_finish_read(t, s); - } +static grpc_stream_state compute_state(gpr_uint8 write_closed, + gpr_uint8 read_closed) { + if (write_closed && read_closed) return GRPC_STREAM_CLOSED; + if (write_closed) return GRPC_STREAM_SEND_CLOSED; + if (read_closed) return GRPC_STREAM_RECV_CLOSED; + return GRPC_STREAM_OPEN; } -static void add_incoming_metadata(transport *t, stream *s, grpc_mdelem *elem) { - if (s->incoming_metadata_capacity == s->incoming_metadata_count) { - s->incoming_metadata_capacity = - GPR_MAX(8, 2 * s->incoming_metadata_capacity); - s->incoming_metadata = - gpr_realloc(s->incoming_metadata, sizeof(*s->incoming_metadata) * - s->incoming_metadata_capacity); +static void remove_stream(grpc_chttp2_transport *t, gpr_uint32 id) { + 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); + } + GPR_ASSERT(s); + s->global.in_stream_map = 0; + if (t->parsing.incoming_stream == &s->parsing) { + t->parsing.incoming_stream = NULL; + grpc_chttp2_parsing_become_skip_parser(&t->parsing); + } + + new_stream_count = + grpc_chttp2_stream_map_size(&t->parsing_stream_map) + + grpc_chttp2_stream_map_size(&t->new_stream_map); + if (new_stream_count != t->global.concurrent_stream_count) { + t->global.concurrent_stream_count = new_stream_count; + maybe_start_some_streams(&t->global); + } +} + +static void unlock_check_read_write_state(grpc_chttp2_transport *t) { + grpc_chttp2_transport_global *transport_global = &t->global; + grpc_chttp2_stream_global *stream_global; + grpc_stream_state state; + + if (!t->parsing_active) { + /* 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 */ + 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_state != WRITE_STATE_OPEN); + GPR_ASSERT(stream_global->read_closed); + remove_stream(t, stream_global->id); + grpc_chttp2_list_add_read_write_state_changed(transport_global, + stream_global); + } } - s->incoming_metadata[s->incoming_metadata_count++].md = elem; -} -static void cancel_stream_inner(transport *t, stream *s, gpr_uint32 id, + while (grpc_chttp2_list_pop_read_write_state_changed(transport_global, + &stream_global)) { + if (stream_global->cancelled) { + stream_global->write_state = WRITE_STATE_SENT_CLOSE; + stream_global->read_closed = 1; + if (!stream_global->published_cancelled) { + char buffer[GPR_LTOA_MIN_BUFSIZE]; + gpr_ltoa(stream_global->cancelled_status, buffer); + grpc_chttp2_incoming_metadata_buffer_add(&stream_global->incoming_metadata, + grpc_mdelem_from_strings(t->metadata_context, "grpc-status", buffer)); + grpc_chttp2_incoming_metadata_buffer_place_metadata_batch_into( + &stream_global->incoming_metadata, + &stream_global->incoming_sopb); + stream_global->published_cancelled = 1; + } + } + if (stream_global->write_state == WRITE_STATE_SENT_CLOSE && + stream_global->read_closed && stream_global->in_stream_map) { + if (t->parsing_active) { + gpr_log(GPR_DEBUG, "%s %d: queue wait for close", + transport_global->is_client ? "CLI" : "SVR", stream_global->id); + grpc_chttp2_list_add_closed_waiting_for_parsing(transport_global, + stream_global); + } else { + gpr_log(GPR_DEBUG, "%s %d: late removal from map", + transport_global->is_client ? "CLI" : "SVR", stream_global->id); + remove_stream(t, stream_global->id); + } + } + if (!stream_global->publish_sopb) { + gpr_log(GPR_DEBUG, "%s %d: skip rw update: no publish target", + transport_global->is_client ? "CLI" : "SVR", stream_global->id); + continue; + } + state = compute_state( + stream_global->write_state == WRITE_STATE_SENT_CLOSE, + stream_global->read_closed && !stream_global->in_stream_map); + gpr_log(GPR_DEBUG, "%s %d: state=%d->%d; nops=%d", + transport_global->is_client ? "CLI" : "SVR", stream_global->id, + stream_global->published_state, state, + stream_global->incoming_sopb.nops); + if (stream_global->incoming_sopb.nops == 0 && + state == stream_global->published_state) { + continue; + } + grpc_chttp2_incoming_metadata_buffer_postprocess_sopb_and_begin_live_op( + &stream_global->incoming_metadata, &stream_global->incoming_sopb, + &stream_global->outstanding_metadata); + grpc_sopb_swap(stream_global->publish_sopb, &stream_global->incoming_sopb); + stream_global->published_state = *stream_global->publish_state = state; + grpc_chttp2_schedule_closure(transport_global, + stream_global->recv_done_closure, 1); + stream_global->recv_done_closure = NULL; + stream_global->publish_sopb = NULL; + stream_global->publish_state = NULL; + } +} + +static void cancel_from_api(grpc_chttp2_transport_global *transport_global, + grpc_chttp2_stream_global *stream_global, + grpc_status_code status) { + stream_global->cancelled = 1; + stream_global->cancelled_status = status; + if (stream_global->id != 0) { + gpr_slice_buffer_add(&transport_global->qbuf, + grpc_chttp2_rst_stream_create( + stream_global->id, + grpc_chttp2_grpc_status_to_http2_error(status))); + } + grpc_chttp2_list_add_read_write_state_changed(transport_global, + stream_global); +} + +#if 0 +static void cancel_stream_inner(grpc_chttp2_transport *t, grpc_chttp2_stream *s, gpr_uint32 id, grpc_status_code local_status, grpc_chttp2_error_code error_code, - grpc_mdstr *optional_message, int send_rst) { + grpc_mdstr *optional_message, int send_rst, + int is_parser) { int had_outgoing; char buffer[GPR_LTOA_MIN_BUFSIZE]; if (s) { /* clear out any unreported input & output: nobody cares anymore */ - had_outgoing = s->outgoing_sopb && s->outgoing_sopb->nops != 0; + had_outgoing = s->global.outgoing_sopb && s->global.outgoing_sopb->nops != 0; if (error_code != GRPC_CHTTP2_NO_ERROR) { schedule_nuke_sopb(t, &s->parser.incoming_sopb); - if (s->outgoing_sopb) { - schedule_nuke_sopb(t, s->outgoing_sopb); - s->outgoing_sopb = NULL; + if (s->global.outgoing_sopb) { + schedule_nuke_sopb(t, s->global.outgoing_sopb); + s->global.outgoing_sopb = NULL; stream_list_remove(t, s, WRITABLE); - schedule_cb(t, s->send_done_closure, 0); + grpc_chttp2_schedule_closure(t, s->global.send_done_closure, 0); } } if (s->cancelled) { @@ -1258,8 +870,8 @@ static void cancel_stream_inner(transport *t, stream *s, gpr_uint32 id, /* synthesize a status if we don't believe we'll get one */ gpr_ltoa(local_status, buffer); add_incoming_metadata( - t, s, - grpc_mdelem_from_strings(t->metadata_context, "grpc-status", buffer)); + t, s, grpc_mdelem_from_strings(t->metadata_context, "grpc-status", + buffer)); if (!optional_message) { switch (local_status) { case GRPC_STATUS_CANCELLED: @@ -1281,11 +893,11 @@ static void cancel_stream_inner(transport *t, stream *s, gpr_uint32 id, add_metadata_batch(t, s); } } - maybe_finish_read(t, s); + maybe_finish_read(t, s, is_parser); } if (!id) send_rst = 0; if (send_rst) { - gpr_slice_buffer_add(&t->qbuf, + gpr_slice_buffer_add(&t->global.qbuf, grpc_chttp2_rst_stream_create(id, error_code)); } if (optional_message) { @@ -1293,674 +905,76 @@ static void cancel_stream_inner(transport *t, stream *s, gpr_uint32 id, } } -static void cancel_stream_id(transport *t, gpr_uint32 id, +static void cancel_stream_id(grpc_chttp2_transport *t, gpr_uint32 id, grpc_status_code local_status, grpc_chttp2_error_code error_code, int send_rst) { + lock(t); cancel_stream_inner(t, lookup_stream(t, id), id, local_status, error_code, - NULL, send_rst); + NULL, send_rst, 1); + unlock(t); } -static void cancel_stream(transport *t, stream *s, +static void cancel_stream(grpc_chttp2_transport *t, grpc_chttp2_stream *s, grpc_status_code local_status, grpc_chttp2_error_code error_code, grpc_mdstr *optional_message, int send_rst) { - cancel_stream_inner(t, s, s->id, local_status, error_code, optional_message, - send_rst); + cancel_stream_inner(t, s, s->global.id, local_status, error_code, optional_message, + send_rst, 0); } +#endif -static void cancel_stream_cb(void *user_data, gpr_uint32 id, void *stream) { - cancel_stream(user_data, stream, GRPC_STATUS_UNAVAILABLE, - GRPC_CHTTP2_INTERNAL_ERROR, NULL, 0); +static void cancel_stream_cb(grpc_chttp2_transport_global *transport_global, + void *user_data, + grpc_chttp2_stream_global *stream_global) { + cancel_from_api(transport_global, stream_global, GRPC_STATUS_UNAVAILABLE); } -static void end_all_the_calls(transport *t) { - grpc_chttp2_stream_map_for_each(&t->stream_map, cancel_stream_cb, t); +static void end_all_the_calls(grpc_chttp2_transport *t) { + grpc_chttp2_for_all_streams(&t->global, NULL, cancel_stream_cb); } -static void drop_connection(transport *t) { - if (t->error_state == ERROR_STATE_NONE) { - t->error_state = ERROR_STATE_SEEN; +static void drop_connection(grpc_chttp2_transport *t) { + if (t->global.error_state == GRPC_CHTTP2_ERROR_STATE_NONE) { + t->global.error_state = GRPC_CHTTP2_ERROR_STATE_SEEN; } + close_transport_locked(t); end_all_the_calls(t); } -static void maybe_finish_read(transport *t, stream *s) { - if (s->incoming_sopb) { +#if 0 +static void maybe_finish_read(grpc_chttp2_transport *t, grpc_chttp2_stream *s, int is_parser) { + if (is_parser) { + stream_list_join(t, s, MAYBE_FINISH_READ_AFTER_PARSE); + } else if (s->incoming_sopb) { stream_list_join(t, s, FINISHED_READ_OP); } } -static void maybe_join_window_updates(transport *t, stream *s) { +static void maybe_join_window_updates(grpc_chttp2_transport *t, + grpc_chttp2_stream *s) { + if (t->parsing.executing) { + stream_list_join(t, s, OTHER_CHECK_WINDOW_UPDATES_AFTER_PARSE); + return; + } if (s->incoming_sopb != NULL && - s->incoming_window < - t->settings[LOCAL_SETTINGS] - [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE] * + s->global.incoming_window < + t->global.settings[LOCAL_SETTINGS] + [GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE] * 3 / 4) { stream_list_join(t, s, WINDOW_UPDATE); } } -static grpc_chttp2_parse_error update_incoming_window(transport *t, stream *s) { - if (t->incoming_frame_size > t->incoming_window) { - gpr_log(GPR_ERROR, "frame of size %d overflows incoming window of %d", - t->incoming_frame_size, t->incoming_window); - return GRPC_CHTTP2_CONNECTION_ERROR; - } - - if (t->incoming_frame_size > s->incoming_window) { - gpr_log(GPR_ERROR, "frame of size %d overflows incoming window of %d", - t->incoming_frame_size, s->incoming_window); - return GRPC_CHTTP2_CONNECTION_ERROR; - } - - FLOWCTL_TRACE(t, t, incoming, 0, -(gpr_int64)t->incoming_frame_size); - FLOWCTL_TRACE(t, s, incoming, s->id, -(gpr_int64)t->incoming_frame_size); - t->incoming_window -= t->incoming_frame_size; - s->incoming_window -= t->incoming_frame_size; - - /* if the stream incoming window is getting low, schedule an update */ - maybe_join_window_updates(t, s); - - return GRPC_CHTTP2_PARSE_OK; -} - -static stream *lookup_stream(transport *t, gpr_uint32 id) { +static grpc_chttp2_stream *lookup_stream(grpc_chttp2_transport *t, gpr_uint32 id) { return grpc_chttp2_stream_map_find(&t->stream_map, id); } - -static grpc_chttp2_parse_error skip_parser(void *parser, - grpc_chttp2_parse_state *st, - gpr_slice slice, int is_last) { - return GRPC_CHTTP2_PARSE_OK; -} - -static void skip_header(void *tp, grpc_mdelem *md) { grpc_mdelem_unref(md); } - -static int init_skip_frame(transport *t, int is_header) { - if (is_header) { - int 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 = is_eoh ? t->header_eof : 0; - } else { - t->parser = skip_parser; - } - return 1; -} - -static void become_skip_parser(transport *t) { - init_skip_frame(t, t->parser == grpc_chttp2_header_parser_parse); -} - -static int init_data_frame_parser(transport *t) { - stream *s = lookup_stream(t, t->incoming_stream_id); - grpc_chttp2_parse_error err = GRPC_CHTTP2_PARSE_OK; - if (!s || s->read_closed) return init_skip_frame(t, 0); - if (err == GRPC_CHTTP2_PARSE_OK) { - err = update_incoming_window(t, s); - } - if (err == GRPC_CHTTP2_PARSE_OK) { - err = grpc_chttp2_data_parser_begin_frame(&s->parser, - t->incoming_frame_flags); - } - switch (err) { - case GRPC_CHTTP2_PARSE_OK: - t->incoming_stream = s; - t->parser = grpc_chttp2_data_parser_parse; - t->parser_data = &s->parser; - return 1; - case GRPC_CHTTP2_STREAM_ERROR: - cancel_stream(t, s, grpc_chttp2_http2_error_to_grpc_status( - GRPC_CHTTP2_INTERNAL_ERROR), - GRPC_CHTTP2_INTERNAL_ERROR, NULL, 1); - return init_skip_frame(t, 0); - case GRPC_CHTTP2_CONNECTION_ERROR: - drop_connection(t); - return 0; - } - gpr_log(GPR_ERROR, "should never reach here"); - abort(); - return 0; -} - -static void free_timeout(void *p) { gpr_free(p); } - -static void on_header(void *tp, grpc_mdelem *md) { - transport *t = tp; - stream *s = t->incoming_stream; - - GPR_ASSERT(s); - - IF_TRACING(gpr_log( - GPR_INFO, "HTTP:%d:%s:HDR: %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 == t->str_grpc_timeout) { - gpr_timespec *cached_timeout = grpc_mdelem_get_user_data(md, free_timeout); - if (!cached_timeout) { - /* not already parsed: parse it now, and store the result away */ - cached_timeout = gpr_malloc(sizeof(gpr_timespec)); - if (!grpc_chttp2_decode_timeout(grpc_mdstr_as_c_string(md->value), - cached_timeout)) { - gpr_log(GPR_ERROR, "Ignoring bad timeout value '%s'", - grpc_mdstr_as_c_string(md->value)); - *cached_timeout = gpr_inf_future; - } - grpc_mdelem_set_user_data(md, free_timeout, cached_timeout); - } - s->incoming_deadline = gpr_time_add(gpr_now(), *cached_timeout); - grpc_mdelem_unref(md); - } else { - add_incoming_metadata(t, s, md); - } - maybe_finish_read(t, s); -} - -static int init_header_frame_parser(transport *t, int is_continuation) { - int is_eoh = - (t->incoming_frame_flags & GRPC_CHTTP2_DATA_FLAG_END_HEADERS) != 0; - stream *s; - - if (is_eoh) { - t->expect_continuation_stream_id = 0; - } else { - t->expect_continuation_stream_id = t->incoming_stream_id; - } - - if (!is_continuation) { - t->header_eof = - (t->incoming_frame_flags & GRPC_CHTTP2_DATA_FLAG_END_STREAM) != 0; - } - - /* could be a new stream or an existing stream */ - s = lookup_stream(t, t->incoming_stream_id); - if (!s) { - if (is_continuation) { - gpr_log(GPR_ERROR, "stream disbanded before CONTINUATION received"); - return init_skip_frame(t, 1); - } - if (t->is_client) { - if ((t->incoming_stream_id & 1) && - t->incoming_stream_id < t->next_stream_id) { - /* this is an old (probably cancelled) stream */ - } else { - gpr_log(GPR_ERROR, "ignoring new stream creation on client"); - } - return init_skip_frame(t, 1); - } else if (t->last_incoming_stream_id > t->incoming_stream_id) { - gpr_log(GPR_ERROR, - "ignoring out of order new stream request on server; last stream " - "id=%d, new stream id=%d", - t->last_incoming_stream_id, t->incoming_stream_id); - return init_skip_frame(t, 1); - } else if ((t->incoming_stream_id & 1) == 0) { - gpr_log(GPR_ERROR, "ignoring stream with non-client generated index %d", t->incoming_stream_id); - return init_skip_frame(t, 1); - } - t->incoming_stream = NULL; - /* if stream is accepted, we set incoming_stream in init_stream */ - t->cb->accept_stream(t->cb_user_data, &t->base, - (void *)(gpr_uintptr)t->incoming_stream_id); - s = t->incoming_stream; - if (!s) { - gpr_log(GPR_ERROR, "stream not accepted"); - return init_skip_frame(t, 1); - } - } else { - t->incoming_stream = s; - } - if (t->incoming_stream->read_closed) { - gpr_log(GPR_ERROR, "skipping already closed stream header"); - t->incoming_stream = NULL; - return init_skip_frame(t, 1); - } - t->parser = grpc_chttp2_header_parser_parse; - t->parser_data = &t->hpack_parser; - t->hpack_parser.on_header = on_header; - t->hpack_parser.on_header_user_data = t; - t->hpack_parser.is_boundary = is_eoh; - t->hpack_parser.is_eof = 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 1; -} - -static int init_window_update_frame_parser(transport *t) { - int ok = GRPC_CHTTP2_PARSE_OK == grpc_chttp2_window_update_parser_begin_frame( - &t->simple_parsers.window_update, - t->incoming_frame_size, - t->incoming_frame_flags); - if (!ok) { - drop_connection(t); - } - t->parser = grpc_chttp2_window_update_parser_parse; - t->parser_data = &t->simple_parsers.window_update; - return ok; -} - -static int init_ping_parser(transport *t) { - int ok = GRPC_CHTTP2_PARSE_OK == - grpc_chttp2_ping_parser_begin_frame(&t->simple_parsers.ping, - t->incoming_frame_size, - t->incoming_frame_flags); - if (!ok) { - drop_connection(t); - } - t->parser = grpc_chttp2_ping_parser_parse; - t->parser_data = &t->simple_parsers.ping; - return ok; -} - -static int init_rst_stream_parser(transport *t) { - int ok = GRPC_CHTTP2_PARSE_OK == - grpc_chttp2_rst_stream_parser_begin_frame(&t->simple_parsers.rst_stream, - t->incoming_frame_size, - t->incoming_frame_flags); - if (!ok) { - drop_connection(t); - } - t->parser = grpc_chttp2_rst_stream_parser_parse; - t->parser_data = &t->simple_parsers.rst_stream; - return ok; -} - -static int init_goaway_parser(transport *t) { - int ok = - GRPC_CHTTP2_PARSE_OK == - grpc_chttp2_goaway_parser_begin_frame( - &t->goaway_parser, t->incoming_frame_size, t->incoming_frame_flags); - if (!ok) { - drop_connection(t); - } - t->parser = grpc_chttp2_goaway_parser_parse; - t->parser_data = &t->goaway_parser; - return ok; -} - -static int init_settings_frame_parser(transport *t) { - int ok; - - if (t->incoming_stream_id != 0) { - gpr_log(GPR_ERROR, "settings frame received for stream %d", t->incoming_stream_id); - drop_connection(t); - return 0; - } - - ok = GRPC_CHTTP2_PARSE_OK == - grpc_chttp2_settings_parser_begin_frame( - &t->simple_parsers.settings, t->incoming_frame_size, - t->incoming_frame_flags, t->settings[PEER_SETTINGS]); - if (!ok) { - drop_connection(t); - return 0; - } - if (t->incoming_frame_flags & GRPC_CHTTP2_FLAG_ACK) { - memcpy(t->settings[ACKED_SETTINGS], t->settings[SENT_SETTINGS], - GRPC_CHTTP2_NUM_SETTINGS * sizeof(gpr_uint32)); - } - t->parser = grpc_chttp2_settings_parser_parse; - t->parser_data = &t->simple_parsers.settings; - return ok; -} - -static int init_frame_parser(transport *t) { - if (t->expect_continuation_stream_id != 0) { - if (t->incoming_frame_type != GRPC_CHTTP2_FRAME_CONTINUATION) { - gpr_log(GPR_ERROR, "Expected CONTINUATION frame, got frame type %02x", - t->incoming_frame_type); - return 0; - } - if (t->expect_continuation_stream_id != t->incoming_stream_id) { - gpr_log(GPR_ERROR, - "Expected CONTINUATION frame for stream %08x, got stream %08x", - t->expect_continuation_stream_id, t->incoming_stream_id); - return 0; - } - return init_header_frame_parser(t, 1); - } - switch (t->incoming_frame_type) { - case GRPC_CHTTP2_FRAME_DATA: - return init_data_frame_parser(t); - case GRPC_CHTTP2_FRAME_HEADER: - return init_header_frame_parser(t, 0); - case GRPC_CHTTP2_FRAME_CONTINUATION: - gpr_log(GPR_ERROR, "Unexpected CONTINUATION frame"); - return 0; - case GRPC_CHTTP2_FRAME_RST_STREAM: - return init_rst_stream_parser(t); - case GRPC_CHTTP2_FRAME_SETTINGS: - return init_settings_frame_parser(t); - case GRPC_CHTTP2_FRAME_WINDOW_UPDATE: - return init_window_update_frame_parser(t); - case GRPC_CHTTP2_FRAME_PING: - return init_ping_parser(t); - case GRPC_CHTTP2_FRAME_GOAWAY: - return init_goaway_parser(t); - default: - gpr_log(GPR_ERROR, "Unknown frame type %02x", t->incoming_frame_type); - return init_skip_frame(t, 0); - } -} - -static int is_window_update_legal(gpr_int64 window_update, gpr_int64 window) { - return window + window_update < MAX_WINDOW; -} - -static void add_metadata_batch(transport *t, stream *s) { - grpc_metadata_batch b; - - b.list.head = NULL; - /* Store away the last element of the list, so that in patch_metadata_ops - we can reconstitute the list. - We can't do list building here as later incoming metadata may reallocate - the underlying array. */ - b.list.tail = (void*)(gpr_intptr)s->incoming_metadata_count; - b.garbage.head = b.garbage.tail = NULL; - b.deadline = s->incoming_deadline; - s->incoming_deadline = gpr_inf_future; - - grpc_sopb_add_metadata(&s->parser.incoming_sopb, b); -} - -static int parse_frame_slice(transport *t, gpr_slice slice, int is_last) { - grpc_chttp2_parse_state st; - size_t i; - memset(&st, 0, sizeof(st)); - switch (t->parser(t->parser_data, &st, slice, is_last)) { - case GRPC_CHTTP2_PARSE_OK: - if (st.end_of_stream) { - t->incoming_stream->read_closed = 1; - maybe_finish_read(t, t->incoming_stream); - } - if (st.need_flush_reads) { - maybe_finish_read(t, t->incoming_stream); - } - if (st.metadata_boundary) { - add_metadata_batch(t, t->incoming_stream); - maybe_finish_read(t, t->incoming_stream); - } - if (st.ack_settings) { - gpr_slice_buffer_add(&t->qbuf, grpc_chttp2_settings_ack_create()); - maybe_start_some_streams(t); - } - if (st.send_ping_ack) { - gpr_slice_buffer_add( - &t->qbuf, - grpc_chttp2_ping_create(1, t->simple_parsers.ping.opaque_8bytes)); - } - if (st.goaway) { - add_goaway(t, st.goaway_error, st.goaway_text); - } - if (st.rst_stream) { - cancel_stream_id( - t, t->incoming_stream_id, - grpc_chttp2_http2_error_to_grpc_status(st.rst_stream_reason), - st.rst_stream_reason, 0); - } - if (st.process_ping_reply) { - for (i = 0; i < t->ping_count; i++) { - if (0 == - memcmp(t->pings[i].id, t->simple_parsers.ping.opaque_8bytes, 8)) { - t->pings[i].cb(t->pings[i].user_data); - memmove(&t->pings[i], &t->pings[i + 1], - (t->ping_count - i - 1) * sizeof(outstanding_ping)); - t->ping_count--; - break; - } - } - } - if (st.initial_window_update) { - for (i = 0; i < t->stream_map.count; i++) { - stream *s = (stream *)(t->stream_map.values[i]); - int was_window_empty = s->outgoing_window <= 0; - FLOWCTL_TRACE(t, s, outgoing, s->id, st.initial_window_update); - s->outgoing_window += st.initial_window_update; - if (was_window_empty && s->outgoing_window > 0 && s->outgoing_sopb && - s->outgoing_sopb->nops > 0) { - stream_list_join(t, s, WRITABLE); - } - } - } - if (st.window_update) { - if (t->incoming_stream_id) { - /* if there was a stream id, this is for some stream */ - stream *s = lookup_stream(t, t->incoming_stream_id); - if (s) { - int was_window_empty = s->outgoing_window <= 0; - if (!is_window_update_legal(st.window_update, s->outgoing_window)) { - cancel_stream(t, s, grpc_chttp2_http2_error_to_grpc_status( - GRPC_CHTTP2_FLOW_CONTROL_ERROR), - GRPC_CHTTP2_FLOW_CONTROL_ERROR, NULL, 1); - } else { - FLOWCTL_TRACE(t, s, outgoing, s->id, st.window_update); - s->outgoing_window += st.window_update; - /* if this window update makes outgoing ops writable again, - flag that */ - if (was_window_empty && s->outgoing_sopb && - s->outgoing_sopb->nops > 0) { - stream_list_join(t, s, WRITABLE); - } - } - } - } else { - /* transport level window update */ - if (!is_window_update_legal(st.window_update, t->outgoing_window)) { - drop_connection(t); - } else { - FLOWCTL_TRACE(t, t, outgoing, 0, st.window_update); - t->outgoing_window += st.window_update; - } - } - } - return 1; - case GRPC_CHTTP2_STREAM_ERROR: - become_skip_parser(t); - cancel_stream_id( - t, t->incoming_stream_id, - grpc_chttp2_http2_error_to_grpc_status(GRPC_CHTTP2_INTERNAL_ERROR), - GRPC_CHTTP2_INTERNAL_ERROR, 1); - return 1; - case GRPC_CHTTP2_CONNECTION_ERROR: - drop_connection(t); - return 0; - } - gpr_log(GPR_ERROR, "should never reach here"); - abort(); - return 0; -} - -static int process_read(transport *t, gpr_slice slice) { - gpr_uint8 *beg = GPR_SLICE_START_PTR(slice); - gpr_uint8 *end = GPR_SLICE_END_PTR(slice); - gpr_uint8 *cur = beg; - - if (cur == end) return 1; - - switch (t->deframe_state) { - case DTS_CLIENT_PREFIX_0: - case DTS_CLIENT_PREFIX_1: - case DTS_CLIENT_PREFIX_2: - case DTS_CLIENT_PREFIX_3: - case DTS_CLIENT_PREFIX_4: - case DTS_CLIENT_PREFIX_5: - case DTS_CLIENT_PREFIX_6: - case DTS_CLIENT_PREFIX_7: - case DTS_CLIENT_PREFIX_8: - case DTS_CLIENT_PREFIX_9: - case DTS_CLIENT_PREFIX_10: - case DTS_CLIENT_PREFIX_11: - case DTS_CLIENT_PREFIX_12: - case DTS_CLIENT_PREFIX_13: - case DTS_CLIENT_PREFIX_14: - case DTS_CLIENT_PREFIX_15: - case DTS_CLIENT_PREFIX_16: - case DTS_CLIENT_PREFIX_17: - case DTS_CLIENT_PREFIX_18: - case DTS_CLIENT_PREFIX_19: - case DTS_CLIENT_PREFIX_20: - case DTS_CLIENT_PREFIX_21: - case DTS_CLIENT_PREFIX_22: - case DTS_CLIENT_PREFIX_23: - while (cur != end && t->deframe_state != DTS_FH_0) { - if (*cur != CLIENT_CONNECT_STRING[t->deframe_state]) { - gpr_log(GPR_ERROR, - "Connect string mismatch: expected '%c' (%d) got '%c' (%d) " - "at byte %d", - CLIENT_CONNECT_STRING[t->deframe_state], - (int)(gpr_uint8)CLIENT_CONNECT_STRING[t->deframe_state], *cur, - (int)*cur, t->deframe_state); - drop_connection(t); - return 0; - } - ++cur; - ++t->deframe_state; - } - if (cur == end) { - return 1; - } - /* fallthrough */ - dts_fh_0: - case DTS_FH_0: - GPR_ASSERT(cur < end); - t->incoming_frame_size = ((gpr_uint32)*cur) << 16; - if (++cur == end) { - t->deframe_state = DTS_FH_1; - return 1; - } - /* fallthrough */ - case DTS_FH_1: - GPR_ASSERT(cur < end); - t->incoming_frame_size |= ((gpr_uint32)*cur) << 8; - if (++cur == end) { - t->deframe_state = DTS_FH_2; - return 1; - } - /* fallthrough */ - case DTS_FH_2: - GPR_ASSERT(cur < end); - t->incoming_frame_size |= *cur; - if (++cur == end) { - t->deframe_state = DTS_FH_3; - return 1; - } - /* fallthrough */ - case DTS_FH_3: - GPR_ASSERT(cur < end); - t->incoming_frame_type = *cur; - if (++cur == end) { - t->deframe_state = DTS_FH_4; - return 1; - } - /* fallthrough */ - case DTS_FH_4: - GPR_ASSERT(cur < end); - t->incoming_frame_flags = *cur; - if (++cur == end) { - t->deframe_state = DTS_FH_5; - return 1; - } - /* fallthrough */ - case DTS_FH_5: - GPR_ASSERT(cur < end); - t->incoming_stream_id = (((gpr_uint32)*cur) & 0x7f) << 24; - if (++cur == end) { - t->deframe_state = DTS_FH_6; - return 1; - } - /* fallthrough */ - case DTS_FH_6: - GPR_ASSERT(cur < end); - t->incoming_stream_id |= ((gpr_uint32)*cur) << 16; - if (++cur == end) { - t->deframe_state = DTS_FH_7; - return 1; - } - /* fallthrough */ - case DTS_FH_7: - GPR_ASSERT(cur < end); - t->incoming_stream_id |= ((gpr_uint32)*cur) << 8; - if (++cur == end) { - t->deframe_state = DTS_FH_8; - return 1; - } - /* fallthrough */ - case DTS_FH_8: - GPR_ASSERT(cur < end); - t->incoming_stream_id |= ((gpr_uint32)*cur); - t->deframe_state = DTS_FRAME; - if (!init_frame_parser(t)) { - return 0; - } - /* t->last_incoming_stream_id is used as last-stream-id when - sending GOAWAY frame. - https://tools.ietf.org/html/draft-ietf-httpbis-http2-17#section-6.8 - says that last-stream-id is peer-initiated stream ID. So, - since we don't have server pushed streams, client should send - GOAWAY last-stream-id=0 in this case. */ - if (!t->is_client) { - t->last_incoming_stream_id = t->incoming_stream_id; - } - if (t->incoming_frame_size == 0) { - if (!parse_frame_slice(t, gpr_empty_slice(), 1)) { - return 0; - } - if (++cur == end) { - t->deframe_state = DTS_FH_0; - return 1; - } - goto dts_fh_0; /* loop */ - } - if (++cur == end) { - return 1; - } - /* fallthrough */ - case DTS_FRAME: - GPR_ASSERT(cur < end); - if ((gpr_uint32)(end - cur) == t->incoming_frame_size) { - if (!parse_frame_slice( - t, gpr_slice_sub_no_ref(slice, cur - beg, end - beg), 1)) { - return 0; - } - t->deframe_state = DTS_FH_0; - return 1; - } else if ((gpr_uint32)(end - cur) > t->incoming_frame_size) { - if (!parse_frame_slice( - t, gpr_slice_sub_no_ref(slice, cur - beg, - cur + t->incoming_frame_size - beg), - 1)) { - return 0; - } - cur += t->incoming_frame_size; - goto dts_fh_0; /* loop */ - } else { - if (!parse_frame_slice( - t, gpr_slice_sub_no_ref(slice, cur - beg, end - beg), 0)) { - return 0; - } - t->incoming_frame_size -= (end - cur); - return 1; - } - gpr_log(GPR_ERROR, "should never reach here"); - abort(); - } - - gpr_log(GPR_ERROR, "should never reach here"); - abort(); - - return 0; -} +#endif /* tcp read callback */ static void recv_data(void *tp, gpr_slice *slices, size_t nslices, grpc_endpoint_cb_status error) { - transport *t = tp; + grpc_chttp2_transport *t = tp; size_t i; - int keep_reading = 0; switch (error) { case GRPC_ENDPOINT_CB_SHUTDOWN: @@ -1968,185 +982,191 @@ static void recv_data(void *tp, gpr_slice *slices, size_t nslices, case GRPC_ENDPOINT_CB_ERROR: lock(t); drop_connection(t); - t->reading = 0; - if (!t->writing && t->ep) { + t->endpoint_reading = 0; + if (!t->writing_active && t->ep) { grpc_endpoint_destroy(t->ep); t->ep = NULL; - unref_transport(t); /* safe as we still have a ref for read */ + UNREF_TRANSPORT( + t, "disconnect"); /* safe as we still have a ref for read */ } unlock(t); - unref_transport(t); + UNREF_TRANSPORT(t, "recv_data"); + for (i = 0; i < nslices; i++) gpr_slice_unref(slices[i]); break; case GRPC_ENDPOINT_CB_OK: lock(t); - if (t->cb) { - for (i = 0; i < nslices && process_read(t, slices[i]); i++) - ; + i = 0; + GPR_ASSERT(!t->parsing_active); + if (t->global.error_state == GRPC_CHTTP2_ERROR_STATE_NONE) { + t->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(&t->global, &t->parsing); + gpr_mu_unlock(&t->mu); + for (; i < nslices && grpc_chttp2_perform_read(&t->parsing, slices[i]); + i++) { + gpr_slice_unref(slices[i]); + } + gpr_mu_lock(&t->mu); + if (i != nslices) { + drop_connection(t); + } + /* merge stream lists */ + grpc_chttp2_stream_map_move_into(&t->new_stream_map, + &t->parsing_stream_map); + t->global.concurrent_stream_count = grpc_chttp2_stream_map_size(&t->parsing_stream_map); + /* handle higher level things */ + grpc_chttp2_publish_reads(&t->global, &t->parsing); + t->parsing_active = 0; + } + if (i == nslices) { + grpc_endpoint_notify_on_read(t->ep, recv_data, t); } unlock(t); - keep_reading = 1; + for (; i < nslices; i++) gpr_slice_unref(slices[i]); break; } - - for (i = 0; i < nslices; i++) gpr_slice_unref(slices[i]); - - if (keep_reading) { - grpc_endpoint_notify_on_read(t->ep, recv_data, t); - } } /* * CALLBACK LOOP */ -static grpc_stream_state compute_state(gpr_uint8 write_closed, - gpr_uint8 read_closed) { - if (write_closed && read_closed) return GRPC_STREAM_CLOSED; - if (write_closed) return GRPC_STREAM_SEND_CLOSED; - if (read_closed) return GRPC_STREAM_RECV_CLOSED; - return GRPC_STREAM_OPEN; -} +typedef struct { + grpc_chttp2_transport *t; + gpr_uint32 error; + gpr_slice text; + grpc_iomgr_closure closure; +} notify_goaways_args; -static void patch_metadata_ops(stream *s) { - grpc_stream_op *ops = s->incoming_sopb->ops; - size_t nops = s->incoming_sopb->nops; - size_t i; - size_t j; - size_t mdidx = 0; - size_t last_mdidx; - int found_metadata = 0; - - /* rework the array of metadata into a linked list, making use - of the breadcrumbs we left in metadata batches during - add_metadata_batch */ - for (i = 0; i < nops; i++) { - grpc_stream_op *op = &ops[i]; - if (op->type != GRPC_OP_METADATA) continue; - found_metadata = 1; - /* we left a breadcrumb indicating where the end of this list is, - and since we add sequentially, we know from the end of the last - segment where this segment begins */ - last_mdidx = (size_t)(gpr_intptr)(op->data.metadata.list.tail); - GPR_ASSERT(last_mdidx > mdidx); - GPR_ASSERT(last_mdidx <= s->incoming_metadata_count); - /* turn the array into a doubly linked list */ - op->data.metadata.list.head = &s->incoming_metadata[mdidx]; - op->data.metadata.list.tail = &s->incoming_metadata[last_mdidx - 1]; - for (j = mdidx + 1; j < last_mdidx; j++) { - s->incoming_metadata[j].prev = &s->incoming_metadata[j-1]; - s->incoming_metadata[j-1].next = &s->incoming_metadata[j]; - } - s->incoming_metadata[mdidx].prev = NULL; - s->incoming_metadata[last_mdidx-1].next = NULL; - /* track where we're up to */ - mdidx = last_mdidx; - } - if (found_metadata) { - s->old_incoming_metadata = s->incoming_metadata; - if (mdidx != s->incoming_metadata_count) { - /* we have a partially read metadata batch still in incoming_metadata */ - size_t new_count = s->incoming_metadata_count - mdidx; - size_t copy_bytes = sizeof(*s->incoming_metadata) * new_count; - GPR_ASSERT(mdidx < s->incoming_metadata_count); - s->incoming_metadata = gpr_malloc(copy_bytes); - memcpy(s->old_incoming_metadata + mdidx, s->incoming_metadata, copy_bytes); - s->incoming_metadata_count = s->incoming_metadata_capacity = new_count; - } else { - s->incoming_metadata = NULL; - s->incoming_metadata_count = 0; - s->incoming_metadata_capacity = 0; - } - } -} +static void notify_goaways(void *p, int iomgr_success_ignored) { + notify_goaways_args *a = p; + grpc_chttp2_transport *t = a->t; -static void finish_reads(transport *t) { - stream *s; - - while ((s = stream_list_remove_head(t, FINISHED_READ_OP)) != NULL) { - int publish = 0; - GPR_ASSERT(s->incoming_sopb); - *s->publish_state = - compute_state(s->write_state == WRITE_STATE_SENT_CLOSE, s->read_closed); - if (*s->publish_state != s->published_state) { - s->published_state = *s->publish_state; - publish = 1; - if (s->published_state == GRPC_STREAM_CLOSED) { - remove_from_stream_map(t, s); - } - } - if (s->parser.incoming_sopb.nops > 0) { - grpc_sopb_swap(s->incoming_sopb, &s->parser.incoming_sopb); - publish = 1; - } - if (publish) { - if (s->incoming_metadata_count > 0) { - patch_metadata_ops(s); - } - s->incoming_sopb = NULL; - schedule_cb(t, s->recv_done_closure, 1); - } - } + t->channel_callback.cb->goaway(t->channel_callback.cb_user_data, &t->base, + a->error, a->text); -} + gpr_free(a); -static void schedule_cb(transport *t, op_closure closure, int success) { - if (t->pending_callbacks.capacity == t->pending_callbacks.count) { - t->pending_callbacks.capacity = - GPR_MAX(t->pending_callbacks.capacity * 2, 8); - t->pending_callbacks.callbacks = - gpr_realloc(t->pending_callbacks.callbacks, - t->pending_callbacks.capacity * - sizeof(*t->pending_callbacks.callbacks)); - } - closure.success = success; - t->pending_callbacks.callbacks[t->pending_callbacks.count++] = closure; + lock(t); + t->channel_callback.executing = 0; + unlock(t); + + UNREF_TRANSPORT(t, "notify_goaways"); } -static int prepare_callbacks(transport *t) { - op_closure_array temp = t->pending_callbacks; - t->pending_callbacks = t->executing_callbacks; - t->executing_callbacks = temp; - return t->executing_callbacks.count > 0; +static void notify_closed(void *gt, int iomgr_success_ignored) { + grpc_chttp2_transport *t = gt; + t->channel_callback.cb->closed(t->channel_callback.cb_user_data, &t->base); + + lock(t); + t->channel_callback.executing = 0; + unlock(t); + + UNREF_TRANSPORT(t, "notify_closed"); } -static void run_callbacks(transport *t) { - size_t i; - for (i = 0; i < t->executing_callbacks.count; i++) { - op_closure c = t->executing_callbacks.callbacks[i]; - c.cb(c.user_data, c.success); +static void unlock_check_channel_callbacks(grpc_chttp2_transport *t) { + if (t->channel_callback.executing) { + return; + } + if (t->global.goaway_state != GRPC_CHTTP2_ERROR_STATE_NONE) { + if (t->global.goaway_state == GRPC_CHTTP2_ERROR_STATE_SEEN && + t->global.error_state != GRPC_CHTTP2_ERROR_STATE_NOTIFIED) { + notify_goaways_args *a = gpr_malloc(sizeof(*a)); + a->t = t; + a->error = t->global.goaway_error; + a->text = t->global.goaway_text; + t->global.goaway_state = GRPC_CHTTP2_ERROR_STATE_NOTIFIED; + t->channel_callback.executing = 1; + grpc_iomgr_closure_init(&a->closure, notify_goaways, a); + REF_TRANSPORT(t, "notify_goaways"); + grpc_chttp2_schedule_closure(&t->global, &a->closure, 1); + return; + } else if (t->global.goaway_state != GRPC_CHTTP2_ERROR_STATE_NOTIFIED) { + return; + } + } + if (t->global.error_state == GRPC_CHTTP2_ERROR_STATE_SEEN) { + t->global.error_state = GRPC_CHTTP2_ERROR_STATE_NOTIFIED; + t->channel_callback.executing = 1; + REF_TRANSPORT(t, "notify_closed"); + grpc_chttp2_schedule_closure(&t->global, &t->channel_callback.notify_closed, + 1); } - t->executing_callbacks.count = 0; } -static void call_cb_closed(transport *t, const grpc_transport_callbacks *cb) { - cb->closed(t->cb_user_data, &t->base); +void grpc_chttp2_schedule_closure( + grpc_chttp2_transport_global *transport_global, grpc_iomgr_closure *closure, + int success) { + closure->success = success; + closure->next = transport_global->pending_closures; + transport_global->pending_closures = closure; } /* * POLLSET STUFF */ -static void add_to_pollset_locked(transport *t, grpc_pollset *pollset) { +static void add_to_pollset_locked(grpc_chttp2_transport *t, + grpc_pollset *pollset) { if (t->ep) { grpc_endpoint_add_to_pollset(t->ep, pollset); } } static void add_to_pollset(grpc_transport *gt, grpc_pollset *pollset) { - transport *t = (transport *)gt; + grpc_chttp2_transport *t = (grpc_chttp2_transport *)gt; lock(t); add_to_pollset_locked(t, pollset); unlock(t); } /* + * TRACING + */ + +void grpc_chttp2_flowctl_trace(const char *file, int line, const char *reason, + const char *context, const char *var, + int is_client, gpr_uint32 stream_id, + gpr_int64 current_value, gpr_int64 delta) { + char *identifier; + char *context_scope; + char *context_thread; + char *underscore_pos = strchr(context, '_'); + GPR_ASSERT(underscore_pos); + context_thread = gpr_strdup(underscore_pos + 1); + context_scope = gpr_strdup(context); + context_scope[underscore_pos - context] = 0; + if (stream_id) { + gpr_asprintf(&identifier, "%s[%d]", context_scope, stream_id); + } else { + identifier = gpr_strdup(context_scope); + } + gpr_log(GPR_DEBUG, + "FLOWCTL: %s %-10s %8s %-23s %8lld %c %8lld = %8lld %-10s [%s:%d]", + is_client ? "client" : "server", identifier, context_thread, var, + current_value, delta < 0 ? '-' : '+', delta < 0 ? -delta : delta, + current_value + delta, reason, file, line); + gpr_free(identifier); + gpr_free(context_thread); + gpr_free(context_scope); +} + +/* * INTEGRATION GLUE */ -static const grpc_transport_vtable vtable = { - sizeof(stream), init_stream, perform_op, - add_to_pollset, destroy_stream, goaway, - close_transport, send_ping, destroy_transport}; +static const grpc_transport_vtable vtable = {sizeof(grpc_chttp2_stream), + init_stream, + perform_op, + add_to_pollset, + destroy_stream, + goaway, + close_transport, + send_ping, + destroy_transport}; void grpc_create_chttp2_transport(grpc_transport_setup_callback setup, void *arg, @@ -2154,7 +1174,7 @@ void grpc_create_chttp2_transport(grpc_transport_setup_callback setup, grpc_endpoint *ep, gpr_slice *slices, size_t nslices, grpc_mdctx *mdctx, int is_client) { - transport *t = gpr_malloc(sizeof(transport)); + grpc_chttp2_transport *t = gpr_malloc(sizeof(grpc_chttp2_transport)); init_transport(t, setup, arg, channel_args, ep, slices, nslices, mdctx, is_client); } diff --git a/src/core/transport/chttp2_transport.h b/src/core/transport/chttp2_transport.h index fad714fabf..18e19f03af 100644 --- a/src/core/transport/chttp2_transport.h +++ b/src/core/transport/chttp2_transport.h @@ -47,4 +47,4 @@ void grpc_create_chttp2_transport(grpc_transport_setup_callback setup, size_t nslices, grpc_mdctx *metadata_context, int is_client); -#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_TRANSPORT_H */ +#endif /* GRPC_INTERNAL_CORE_TRANSPORT_CHTTP2_TRANSPORT_H */ diff --git a/src/core/transport/stream_op.c b/src/core/transport/stream_op.c index 8996ecac35..efb33ddf68 100644 --- a/src/core/transport/stream_op.c +++ b/src/core/transport/stream_op.c @@ -65,7 +65,7 @@ void grpc_sopb_swap(grpc_stream_op_buffer *a, grpc_stream_op_buffer *b) { if (a->ops == a->inlined_ops) { if (b->ops == b->inlined_ops) { /* swap contents of inlined buffer */ - gpr_slice temp[GRPC_SOPB_INLINE_ELEMENTS]; + grpc_stream_op temp[GRPC_SOPB_INLINE_ELEMENTS]; memcpy(temp, a->ops, b->nops * sizeof(grpc_stream_op)); memcpy(a->ops, b->ops, a->nops * sizeof(grpc_stream_op)); memcpy(b->ops, temp, b->nops * sizeof(grpc_stream_op)); @@ -163,6 +163,18 @@ void grpc_sopb_append(grpc_stream_op_buffer *sopb, grpc_stream_op *ops, sopb->nops = new_nops; } +void grpc_sopb_move_to(grpc_stream_op_buffer *src, grpc_stream_op_buffer *dst) { + if (src->nops == 0) { + return; + } + if (dst->nops == 0) { + grpc_sopb_swap(src, dst); + return; + } + grpc_sopb_append(dst, src->ops, src->nops); + src->nops = 0; +} + static void assert_valid_list(grpc_mdelem_list *list) { #ifndef NDEBUG grpc_linked_mdelem *l; diff --git a/src/core/transport/stream_op.h b/src/core/transport/stream_op.h index e080701e2d..aae101edad 100644 --- a/src/core/transport/stream_op.h +++ b/src/core/transport/stream_op.h @@ -166,6 +166,8 @@ void grpc_sopb_add_slice(grpc_stream_op_buffer *sopb, gpr_slice slice); void grpc_sopb_append(grpc_stream_op_buffer *sopb, grpc_stream_op *ops, size_t nops); +void grpc_sopb_move_to(grpc_stream_op_buffer *src, grpc_stream_op_buffer *dst); + char *grpc_sopb_string(grpc_stream_op_buffer *sopb); #endif /* GRPC_INTERNAL_CORE_TRANSPORT_STREAM_OP_H */ diff --git a/src/core/transport/transport.c b/src/core/transport/transport.c index d9a1319c42..2f85a8557d 100644 --- a/src/core/transport/transport.c +++ b/src/core/transport/transport.c @@ -73,9 +73,8 @@ void grpc_transport_destroy_stream(grpc_transport *transport, transport->vtable->destroy_stream(transport, stream); } -void grpc_transport_ping(grpc_transport *transport, void (*cb)(void *user_data), - void *user_data) { - transport->vtable->ping(transport, cb, user_data); +void grpc_transport_ping(grpc_transport *transport, grpc_iomgr_closure *cb) { + transport->vtable->ping(transport, cb); } void grpc_transport_setup_cancel(grpc_transport_setup *setup) { @@ -86,12 +85,25 @@ void grpc_transport_setup_initiate(grpc_transport_setup *setup) { setup->vtable->initiate(setup); } +void grpc_transport_setup_add_interested_party(grpc_transport_setup *setup, + grpc_pollset *pollset) { + setup->vtable->add_interested_party(setup, pollset); +} + +void grpc_transport_setup_del_interested_party(grpc_transport_setup *setup, + grpc_pollset *pollset) { + setup->vtable->del_interested_party(setup, pollset); +} + void grpc_transport_op_finish_with_failure(grpc_transport_op *op) { if (op->send_ops) { - op->on_done_send(op->send_user_data, 0); + op->on_done_send->cb(op->on_done_send->cb_arg, 0); } if (op->recv_ops) { - op->on_done_recv(op->recv_user_data, 0); + op->on_done_recv->cb(op->on_done_recv->cb_arg, 0); + } + if (op->on_consumed) { + op->on_consumed->cb(op->on_consumed->cb_arg, 0); } } diff --git a/src/core/transport/transport.h b/src/core/transport/transport.h index 6f8d39e352..0a5b31a60a 100644 --- a/src/core/transport/transport.h +++ b/src/core/transport/transport.h @@ -37,6 +37,7 @@ #include <stddef.h> #include "src/core/iomgr/pollset.h" +#include "src/core/iomgr/pollset_set.h" #include "src/core/transport/stream_op.h" #include "src/core/channel/context.h" @@ -63,15 +64,15 @@ typedef enum grpc_stream_state { /* Transport op: a set of operations to perform on a transport */ typedef struct grpc_transport_op { + grpc_iomgr_closure *on_consumed; + grpc_stream_op_buffer *send_ops; int is_last_send; - void (*on_done_send)(void *user_data, int success); - void *send_user_data; + grpc_iomgr_closure *on_done_send; grpc_stream_op_buffer *recv_ops; grpc_stream_state *recv_state; - void (*on_done_recv)(void *user_data, int success); - void *recv_user_data; + grpc_iomgr_closure *on_done_recv; grpc_pollset *bind_pollset; @@ -163,11 +164,8 @@ void grpc_transport_perform_op(grpc_transport *transport, grpc_stream *stream, /* Send a ping on a transport - Calls cb with user data when a response is received. - cb *MAY* be called with arbitrary transport level locks held. It is not safe - to call into the transport during cb. */ -void grpc_transport_ping(grpc_transport *transport, void (*cb)(void *user_data), - void *user_data); + Calls cb with user data when a response is received. */ +void grpc_transport_ping(grpc_transport *transport, grpc_iomgr_closure *cb); /* Advise peer of pending connection termination. */ void grpc_transport_goaway(grpc_transport *transport, grpc_status_code status, @@ -195,6 +193,10 @@ typedef struct grpc_transport_setup_vtable grpc_transport_setup_vtable; struct grpc_transport_setup_vtable { void (*initiate)(grpc_transport_setup *setup); + void (*add_interested_party)(grpc_transport_setup *setup, + grpc_pollset *pollset); + void (*del_interested_party)(grpc_transport_setup *setup, + grpc_pollset *pollset); void (*cancel)(grpc_transport_setup *setup); }; @@ -211,6 +213,12 @@ struct grpc_transport_setup { This *may* be implemented as a no-op if the setup process monitors something continuously. */ void grpc_transport_setup_initiate(grpc_transport_setup *setup); + +void grpc_transport_setup_add_interested_party(grpc_transport_setup *setup, + grpc_pollset *pollset); +void grpc_transport_setup_del_interested_party(grpc_transport_setup *setup, + grpc_pollset *pollset); + /* Cancel transport setup. After this returns, no new transports should be created, and all pending transport setup callbacks should be completed. After this call completes, setup should be considered invalid (this can be diff --git a/src/core/transport/transport_impl.h b/src/core/transport/transport_impl.h index 479e15338f..c51951b7a7 100644 --- a/src/core/transport/transport_impl.h +++ b/src/core/transport/transport_impl.h @@ -63,8 +63,7 @@ typedef struct grpc_transport_vtable { void (*close)(grpc_transport *self); /* implementation of grpc_transport_ping */ - void (*ping)(grpc_transport *self, void (*cb)(void *user_data), - void *user_data); + void (*ping)(grpc_transport *self, grpc_iomgr_closure *cb); /* implementation of grpc_transport_destroy */ void (*destroy)(grpc_transport *self); |