diff options
Diffstat (limited to 'src/core/ext/filters')
26 files changed, 277 insertions, 324 deletions
diff --git a/src/core/ext/filters/client_channel/backup_poller.cc b/src/core/ext/filters/client_channel/backup_poller.cc index 4ee5e9c109..906a72b662 100644 --- a/src/core/ext/filters/client_channel/backup_poller.cc +++ b/src/core/ext/filters/client_channel/backup_poller.cc @@ -23,11 +23,11 @@ #include <grpc/support/log.h> #include <grpc/support/sync.h> #include "src/core/ext/filters/client_channel/client_channel.h" +#include "src/core/lib/gpr/env.h" +#include "src/core/lib/gpr/string.h" #include "src/core/lib/iomgr/error.h" #include "src/core/lib/iomgr/pollset.h" #include "src/core/lib/iomgr/timer.h" -#include "src/core/lib/support/env.h" -#include "src/core/lib/support/string.h" #include "src/core/lib/surface/channel.h" #include "src/core/lib/surface/completion_queue.h" diff --git a/src/core/ext/filters/client_channel/client_channel.cc b/src/core/ext/filters/client_channel/client_channel.cc index 3f3334d44a..a8a7a37be0 100644 --- a/src/core/ext/filters/client_channel/client_channel.cc +++ b/src/core/ext/filters/client_channel/client_channel.cc @@ -41,12 +41,12 @@ #include "src/core/ext/filters/deadline/deadline_filter.h" #include "src/core/lib/channel/channel_args.h" #include "src/core/lib/channel/connected_channel.h" +#include "src/core/lib/gpr/string.h" #include "src/core/lib/iomgr/combiner.h" #include "src/core/lib/iomgr/iomgr.h" #include "src/core/lib/iomgr/polling_entity.h" #include "src/core/lib/profiling/timers.h" #include "src/core/lib/slice/slice_internal.h" -#include "src/core/lib/support/string.h" #include "src/core/lib/surface/channel.h" #include "src/core/lib/transport/connectivity_state.h" #include "src/core/lib/transport/metadata.h" @@ -1003,7 +1003,7 @@ static void create_subchannel_call_locked(grpc_call_element* elem, grpc_error* error) { channel_data* chand = (channel_data*)elem->channel_data; call_data* calld = (call_data*)elem->call_data; - const grpc_connected_subchannel_call_args call_args = { + const grpc_core::ConnectedSubchannel::CallArgs call_args = { calld->pollent, // pollent calld->path, // path calld->call_start_time, // start_time @@ -1012,8 +1012,8 @@ static void create_subchannel_call_locked(grpc_call_element* elem, calld->pick.subchannel_call_context, // context calld->call_combiner // call_combiner }; - grpc_error* new_error = grpc_connected_subchannel_create_call( - calld->pick.connected_subchannel, &call_args, &calld->subchannel_call); + grpc_error* new_error = calld->pick.connected_subchannel->CreateCall( + call_args, &calld->subchannel_call); if (grpc_client_channel_trace.enabled()) { gpr_log(GPR_DEBUG, "chand=%p calld=%p: create subchannel_call=%p: error=%s", chand, calld, calld->subchannel_call, grpc_error_string(new_error)); @@ -1463,7 +1463,7 @@ static void cc_destroy_call_elem(grpc_call_element* elem, } GPR_ASSERT(calld->waiting_for_pick_batches_count == 0); if (calld->pick.connected_subchannel != nullptr) { - GRPC_CONNECTED_SUBCHANNEL_UNREF(calld->pick.connected_subchannel, "picked"); + calld->pick.connected_subchannel.reset(); } for (size_t i = 0; i < GRPC_CONTEXT_COUNT; ++i) { if (calld->pick.subchannel_call_context[i].value != nullptr) { diff --git a/src/core/ext/filters/client_channel/http_connect_handshaker.cc b/src/core/ext/filters/client_channel/http_connect_handshaker.cc index 556a3bc6a1..6bfd038887 100644 --- a/src/core/ext/filters/client_channel/http_connect_handshaker.cc +++ b/src/core/ext/filters/client_channel/http_connect_handshaker.cc @@ -30,11 +30,11 @@ #include "src/core/ext/filters/client_channel/uri_parser.h" #include "src/core/lib/channel/channel_args.h" #include "src/core/lib/channel/handshaker_registry.h" +#include "src/core/lib/gpr/env.h" +#include "src/core/lib/gpr/string.h" #include "src/core/lib/http/format_request.h" #include "src/core/lib/http/parser.h" #include "src/core/lib/slice/slice_internal.h" -#include "src/core/lib/support/env.h" -#include "src/core/lib/support/string.h" typedef struct http_connect_handshaker { // Base class. Must be first. diff --git a/src/core/ext/filters/client_channel/http_proxy.cc b/src/core/ext/filters/client_channel/http_proxy.cc index 2eafeee702..037c65822a 100644 --- a/src/core/ext/filters/client_channel/http_proxy.cc +++ b/src/core/ext/filters/client_channel/http_proxy.cc @@ -30,9 +30,9 @@ #include "src/core/ext/filters/client_channel/proxy_mapper_registry.h" #include "src/core/ext/filters/client_channel/uri_parser.h" #include "src/core/lib/channel/channel_args.h" +#include "src/core/lib/gpr/env.h" +#include "src/core/lib/gpr/string.h" #include "src/core/lib/slice/b64.h" -#include "src/core/lib/support/env.h" -#include "src/core/lib/support/string.h" /** * Parses the 'http_proxy' env var and returns the proxy hostname to resolve or diff --git a/src/core/ext/filters/client_channel/lb_policy.h b/src/core/ext/filters/client_channel/lb_policy.h index 1176a05b78..e19726efb3 100644 --- a/src/core/ext/filters/client_channel/lb_policy.h +++ b/src/core/ext/filters/client_channel/lb_policy.h @@ -20,6 +20,7 @@ #define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_LB_POLICY_H #include "src/core/ext/filters/client_channel/subchannel.h" +#include "src/core/lib/gpr++/ref_counted_ptr.h" #include "src/core/lib/iomgr/polling_entity.h" #include "src/core/lib/transport/connectivity_state.h" @@ -54,9 +55,9 @@ typedef struct grpc_lb_policy_pick_state { grpc_linked_mdelem lb_token_mdelem_storage; /// Closure to run when pick is complete, if not completed synchronously. grpc_closure* on_complete; - /// Will be set to the selected subchannel, or NULL on failure or when + /// Will be set to the selected subchannel, or nullptr on failure or when /// the LB policy decides to drop the call. - grpc_connected_subchannel* connected_subchannel; + grpc_core::RefCountedPtr<grpc_core::ConnectedSubchannel> connected_subchannel; /// Will be populated with context to pass to the subchannel call, if needed. grpc_call_context_element subchannel_call_context[GRPC_CONTEXT_COUNT]; /// Upon success, \a *user_data will be set to whatever opaque information @@ -152,7 +153,8 @@ void grpc_lb_policy_shutdown_locked(grpc_lb_policy* policy, int grpc_lb_policy_pick_locked(grpc_lb_policy* policy, grpc_lb_policy_pick_state* pick); -/** Perform a connected subchannel ping (see \a grpc_connected_subchannel_ping) +/** Perform a connected subchannel ping (see \a + grpc_core::ConnectedSubchannel::Ping) against one of the connected subchannels managed by \a policy. */ void grpc_lb_policy_ping_one_locked(grpc_lb_policy* policy, grpc_closure* on_initiate, diff --git a/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.cc b/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.cc index 272b3617b2..eb5ced4c20 100644 --- a/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.cc +++ b/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb.cc @@ -106,6 +106,8 @@ #include "src/core/lib/backoff/backoff.h" #include "src/core/lib/channel/channel_args.h" #include "src/core/lib/channel/channel_stack.h" +#include "src/core/lib/gpr++/manual_constructor.h" +#include "src/core/lib/gpr/string.h" #include "src/core/lib/iomgr/combiner.h" #include "src/core/lib/iomgr/sockaddr.h" #include "src/core/lib/iomgr/sockaddr_utils.h" @@ -113,8 +115,6 @@ #include "src/core/lib/slice/slice_hash_table.h" #include "src/core/lib/slice/slice_internal.h" #include "src/core/lib/slice/slice_string_helpers.h" -#include "src/core/lib/support/manual_constructor.h" -#include "src/core/lib/support/string.h" #include "src/core/lib/surface/call.h" #include "src/core/lib/surface/channel.h" #include "src/core/lib/surface/channel_init.h" @@ -939,7 +939,7 @@ static void glb_shutdown_locked(grpc_lb_policy* pol, } gpr_free(pp); } else { - pp->pick->connected_subchannel = nullptr; + pp->pick->connected_subchannel.reset(); GRPC_CLOSURE_SCHED(&pp->on_complete, GRPC_ERROR_REF(error)); } pp = next; @@ -976,7 +976,7 @@ static void glb_cancel_pick_locked(grpc_lb_policy* pol, while (pp != nullptr) { pending_pick* next = pp->next; if (pp->pick == pick) { - pick->connected_subchannel = nullptr; + pick->connected_subchannel.reset(); GRPC_CLOSURE_SCHED(&pp->on_complete, GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING( "Pick Cancelled", &error, 1)); diff --git a/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel.cc b/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel.cc index a8ecea4212..1e7f34bdc7 100644 --- a/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel.cc +++ b/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel.cc @@ -22,8 +22,8 @@ #include "src/core/ext/filters/client_channel/client_channel.h" #include "src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel.h" #include "src/core/lib/channel/channel_args.h" +#include "src/core/lib/gpr/string.h" #include "src/core/lib/iomgr/sockaddr_utils.h" -#include "src/core/lib/support/string.h" grpc_channel* grpc_lb_policy_grpclb_create_lb_channel( const char* lb_service_target_addresses, diff --git a/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel_secure.cc b/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel_secure.cc index 76bcddf945..15233d371c 100644 --- a/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel_secure.cc +++ b/src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel_secure.cc @@ -22,11 +22,11 @@ #include "src/core/ext/filters/client_channel/client_channel.h" #include "src/core/ext/filters/client_channel/lb_policy/grpclb/grpclb_channel.h" #include "src/core/lib/channel/channel_args.h" +#include "src/core/lib/gpr/string.h" #include "src/core/lib/iomgr/sockaddr_utils.h" #include "src/core/lib/security/credentials/credentials.h" #include "src/core/lib/security/transport/lb_targets_info.h" #include "src/core/lib/slice/slice_internal.h" -#include "src/core/lib/support/string.h" grpc_channel* grpc_lb_policy_grpclb_create_lb_channel( const char* lb_service_target_addresses, diff --git a/src/core/ext/filters/client_channel/lb_policy/pick_first/pick_first.cc b/src/core/ext/filters/client_channel/lb_policy/pick_first/pick_first.cc index 60385272cf..725b78d478 100644 --- a/src/core/ext/filters/client_channel/lb_policy/pick_first/pick_first.cc +++ b/src/core/ext/filters/client_channel/lb_policy/pick_first/pick_first.cc @@ -81,7 +81,7 @@ static void pf_shutdown_locked(grpc_lb_policy* pol, GRPC_CLOSURE_SCHED(pick->on_complete, GRPC_ERROR_NONE); } } else { - pick->connected_subchannel = nullptr; + pick->connected_subchannel.reset(); GRPC_CLOSURE_SCHED(pick->on_complete, GRPC_ERROR_REF(error)); } } @@ -111,7 +111,7 @@ static void pf_cancel_pick_locked(grpc_lb_policy* pol, while (pp != nullptr) { grpc_lb_policy_pick_state* next = pp->next; if (pp == pick) { - pick->connected_subchannel = nullptr; + pick->connected_subchannel.reset(); GRPC_CLOSURE_SCHED(pick->on_complete, GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING( "Pick Cancelled", &error, 1)); @@ -176,8 +176,7 @@ static int pf_pick_locked(grpc_lb_policy* pol, pick_first_lb_policy* p = (pick_first_lb_policy*)pol; // If we have a selected subchannel already, return synchronously. if (p->selected != nullptr) { - pick->connected_subchannel = GRPC_CONNECTED_SUBCHANNEL_REF( - p->selected->connected_subchannel, "picked"); + pick->connected_subchannel = p->selected->connected_subchannel; return 1; } // No subchannel selected yet, so handle asynchronously. @@ -217,8 +216,7 @@ static void pf_ping_one_locked(grpc_lb_policy* pol, grpc_closure* on_initiate, grpc_closure* on_ack) { pick_first_lb_policy* p = (pick_first_lb_policy*)pol; if (p->selected) { - grpc_connected_subchannel_ping(p->selected->connected_subchannel, - on_initiate, on_ack); + p->selected->connected_subchannel->Ping(on_initiate, on_ack); } else { GRPC_CLOSURE_SCHED(on_initiate, GRPC_ERROR_CREATE_FROM_STATIC_STRING("Not connected")); @@ -297,8 +295,7 @@ static void pf_update_locked(grpc_lb_policy* policy, subchannel_list->num_subchannels); } if (p->selected->connected_subchannel != nullptr) { - sd->connected_subchannel = GRPC_CONNECTED_SUBCHANNEL_REF( - p->selected->connected_subchannel, "pf_update_includes_selected"); + sd->connected_subchannel = p->selected->connected_subchannel; } p->selected = sd; if (p->subchannel_list != nullptr) { @@ -410,8 +407,8 @@ static void pf_connectivity_changed_locked(void* arg, grpc_error* error) { // re-resolution is introduced. But we need to investigate whether we // really want to take any action instead of waiting for the selected // subchannel reconnecting. - if (sd->curr_connectivity_state == GRPC_CHANNEL_SHUTDOWN || - sd->curr_connectivity_state == GRPC_CHANNEL_TRANSIENT_FAILURE) { + GPR_ASSERT(sd->curr_connectivity_state != GRPC_CHANNEL_SHUTDOWN); + if (sd->curr_connectivity_state == GRPC_CHANNEL_TRANSIENT_FAILURE) { // If the selected channel goes bad, request a re-resolution. grpc_connectivity_state_set(&p->state_tracker, GRPC_CHANNEL_IDLE, GRPC_ERROR_NONE, @@ -419,20 +416,19 @@ static void pf_connectivity_changed_locked(void* arg, grpc_error* error) { p->started_picking = false; grpc_lb_policy_try_reresolve(&p->base, &grpc_lb_pick_first_trace, GRPC_ERROR_NONE); + // in transient failure. Rely on re-resolution to recover. + p->selected = nullptr; + grpc_lb_subchannel_data_stop_connectivity_watch(sd); + grpc_lb_subchannel_list_unref_for_connectivity_watch( + sd->subchannel_list, "pf_selected_shutdown"); + grpc_lb_subchannel_data_unref_subchannel( + sd, "pf_selected_shutdown"); // Unrefs connected subchannel } else { grpc_connectivity_state_set(&p->state_tracker, sd->curr_connectivity_state, GRPC_ERROR_REF(error), "selected_changed"); - } - if (sd->curr_connectivity_state != GRPC_CHANNEL_SHUTDOWN) { // Renew notification. grpc_lb_subchannel_data_start_connectivity_watch(sd); - } else { - p->selected = nullptr; - grpc_lb_subchannel_data_stop_connectivity_watch(sd); - grpc_lb_subchannel_list_unref_for_connectivity_watch( - sd->subchannel_list, "pf_selected_shutdown"); - grpc_lb_subchannel_data_unref_subchannel(sd, "pf_selected_shutdown"); } } return; @@ -450,6 +446,8 @@ static void pf_connectivity_changed_locked(void* arg, grpc_error* error) { case GRPC_CHANNEL_READY: { // Case 2. Promote p->latest_pending_subchannel_list to // p->subchannel_list. + sd->connected_subchannel = + grpc_subchannel_get_connected_subchannel(sd->subchannel); if (sd->subchannel_list == p->latest_pending_subchannel_list) { GPR_ASSERT(p->subchannel_list != nullptr); grpc_lb_subchannel_list_shutdown_and_unref(p->subchannel_list, @@ -460,9 +458,6 @@ static void pf_connectivity_changed_locked(void* arg, grpc_error* error) { // Cases 1 and 2. grpc_connectivity_state_set(&p->state_tracker, GRPC_CHANNEL_READY, GRPC_ERROR_NONE, "connecting_ready"); - sd->connected_subchannel = GRPC_CONNECTED_SUBCHANNEL_REF( - grpc_subchannel_get_connected_subchannel(sd->subchannel), - "connected"); p->selected = sd; if (grpc_lb_pick_first_trace.enabled()) { gpr_log(GPR_INFO, "Pick First %p selected subchannel %p", (void*)p, @@ -474,8 +469,7 @@ static void pf_connectivity_changed_locked(void* arg, grpc_error* error) { grpc_lb_policy_pick_state* pick; while ((pick = p->pending_picks)) { p->pending_picks = pick->next; - pick->connected_subchannel = GRPC_CONNECTED_SUBCHANNEL_REF( - p->selected->connected_subchannel, "picked"); + pick->connected_subchannel = p->selected->connected_subchannel; if (grpc_lb_pick_first_trace.enabled()) { gpr_log(GPR_INFO, "Servicing pending pick with selected subchannel %p", @@ -520,39 +514,8 @@ static void pf_connectivity_changed_locked(void* arg, grpc_error* error) { grpc_lb_subchannel_data_start_connectivity_watch(sd); break; } - case GRPC_CHANNEL_SHUTDOWN: { - grpc_lb_subchannel_data_stop_connectivity_watch(sd); - grpc_lb_subchannel_data_unref_subchannel(sd, "pf_candidate_shutdown"); - // Advance to next subchannel and check its state. - grpc_lb_subchannel_data* original_sd = sd; - do { - sd->subchannel_list->checking_subchannel = - (sd->subchannel_list->checking_subchannel + 1) % - sd->subchannel_list->num_subchannels; - sd = &sd->subchannel_list - ->subchannels[sd->subchannel_list->checking_subchannel]; - } while (sd->subchannel == nullptr && sd != original_sd); - if (sd == original_sd) { - grpc_lb_subchannel_list_unref_for_connectivity_watch( - sd->subchannel_list, "pf_exhausted_subchannels"); - if (sd->subchannel_list == p->subchannel_list) { - grpc_connectivity_state_set(&p->state_tracker, GRPC_CHANNEL_IDLE, - GRPC_ERROR_NONE, - "exhausted_subchannels+reresolve"); - p->started_picking = false; - grpc_lb_policy_try_reresolve(&p->base, &grpc_lb_pick_first_trace, - GRPC_ERROR_NONE); - } - } else { - if (sd->subchannel_list == p->subchannel_list) { - grpc_connectivity_state_set( - &p->state_tracker, GRPC_CHANNEL_TRANSIENT_FAILURE, - GRPC_ERROR_REF(error), "subchannel_failed"); - } - // Reuses the connectivity refs from the previous watch. - grpc_lb_subchannel_data_start_connectivity_watch(sd); - } - } + case GRPC_CHANNEL_SHUTDOWN: + GPR_UNREACHABLE_CODE(break); } } diff --git a/src/core/ext/filters/client_channel/lb_policy/round_robin/round_robin.cc b/src/core/ext/filters/client_channel/lb_policy/round_robin/round_robin.cc index 92c7d5bd5d..e217a0b0c0 100644 --- a/src/core/ext/filters/client_channel/lb_policy/round_robin/round_robin.cc +++ b/src/core/ext/filters/client_channel/lb_policy/round_robin/round_robin.cc @@ -34,6 +34,7 @@ #include "src/core/ext/filters/client_channel/subchannel_index.h" #include "src/core/lib/channel/channel_args.h" #include "src/core/lib/debug/trace.h" +#include "src/core/lib/gpr++/ref_counted_ptr.h" #include "src/core/lib/iomgr/combiner.h" #include "src/core/lib/iomgr/sockaddr_utils.h" #include "src/core/lib/transport/connectivity_state.h" @@ -127,7 +128,7 @@ static void update_last_ready_subchannel_index_locked(round_robin_lb_policy* p, (void*)p, (unsigned long)last_ready_index, (void*)p->subchannel_list->subchannels[last_ready_index].subchannel, (void*)p->subchannel_list->subchannels[last_ready_index] - .connected_subchannel); + .connected_subchannel.get()); } } @@ -162,7 +163,7 @@ static void rr_shutdown_locked(grpc_lb_policy* pol, GRPC_CLOSURE_SCHED(pick->on_complete, GRPC_ERROR_NONE); } } else { - pick->connected_subchannel = nullptr; + pick->connected_subchannel.reset(); GRPC_CLOSURE_SCHED(pick->on_complete, GRPC_ERROR_REF(error)); } } @@ -192,7 +193,7 @@ static void rr_cancel_pick_locked(grpc_lb_policy* pol, while (pp != nullptr) { grpc_lb_policy_pick_state* next = pp->next; if (pp == pick) { - pick->connected_subchannel = nullptr; + pick->connected_subchannel.reset(); GRPC_CLOSURE_SCHED(pick->on_complete, GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING( "Pick cancelled", &error, 1)); @@ -216,7 +217,7 @@ static void rr_cancel_picks_locked(grpc_lb_policy* pol, grpc_lb_policy_pick_state* next = pick->next; if ((pick->initial_metadata_flags & initial_metadata_flags_mask) == initial_metadata_flags_eq) { - pick->connected_subchannel = nullptr; + pick->connected_subchannel.reset(); GRPC_CLOSURE_SCHED(pick->on_complete, GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING( "Pick cancelled", &error, 1)); @@ -262,8 +263,7 @@ static int rr_pick_locked(grpc_lb_policy* pol, /* readily available, report right away */ grpc_lb_subchannel_data* sd = &p->subchannel_list->subchannels[next_ready_index]; - pick->connected_subchannel = - GRPC_CONNECTED_SUBCHANNEL_REF(sd->connected_subchannel, "rr_picked"); + pick->connected_subchannel = sd->connected_subchannel; if (pick->user_data != nullptr) { *pick->user_data = sd->user_data; } @@ -272,8 +272,8 @@ static int rr_pick_locked(grpc_lb_policy* pol, GPR_DEBUG, "[RR %p] Picked target <-- Subchannel %p (connected %p) (sl %p, " "index %" PRIuPTR ")", - p, sd->subchannel, pick->connected_subchannel, sd->subchannel_list, - next_ready_index); + p, sd->subchannel, pick->connected_subchannel.get(), + sd->subchannel_list, next_ready_index); } /* only advance the last picked pointer if the selection was used */ update_last_ready_subchannel_index_locked(p, next_ready_index); @@ -291,15 +291,14 @@ static int rr_pick_locked(grpc_lb_policy* pol, static void update_state_counters_locked(grpc_lb_subchannel_data* sd) { grpc_lb_subchannel_list* subchannel_list = sd->subchannel_list; + GPR_ASSERT(sd->prev_connectivity_state != GRPC_CHANNEL_SHUTDOWN); + GPR_ASSERT(sd->curr_connectivity_state != GRPC_CHANNEL_SHUTDOWN); if (sd->prev_connectivity_state == GRPC_CHANNEL_READY) { GPR_ASSERT(subchannel_list->num_ready > 0); --subchannel_list->num_ready; } else if (sd->prev_connectivity_state == GRPC_CHANNEL_TRANSIENT_FAILURE) { GPR_ASSERT(subchannel_list->num_transient_failures > 0); --subchannel_list->num_transient_failures; - } else if (sd->prev_connectivity_state == GRPC_CHANNEL_SHUTDOWN) { - GPR_ASSERT(subchannel_list->num_shutdown > 0); - --subchannel_list->num_shutdown; } else if (sd->prev_connectivity_state == GRPC_CHANNEL_IDLE) { GPR_ASSERT(subchannel_list->num_idle > 0); --subchannel_list->num_idle; @@ -309,8 +308,6 @@ static void update_state_counters_locked(grpc_lb_subchannel_data* sd) { ++subchannel_list->num_ready; } else if (sd->curr_connectivity_state == GRPC_CHANNEL_TRANSIENT_FAILURE) { ++subchannel_list->num_transient_failures; - } else if (sd->curr_connectivity_state == GRPC_CHANNEL_SHUTDOWN) { - ++subchannel_list->num_shutdown; } else if (sd->curr_connectivity_state == GRPC_CHANNEL_IDLE) { ++subchannel_list->num_idle; } @@ -410,6 +407,7 @@ static void rr_connectivity_changed_locked(void* arg, grpc_error* error) { // either the current or latest pending subchannel lists. GPR_ASSERT(sd->subchannel_list == p->subchannel_list || sd->subchannel_list == p->latest_pending_subchannel_list); + GPR_ASSERT(sd->pending_connectivity_state_unsafe != GRPC_CHANNEL_SHUTDOWN); // Now that we're inside the combiner, copy the pending connectivity // state (which was set by the connectivity state watcher) to // curr_connectivity_state, which is what we use inside of the combiner. @@ -417,18 +415,17 @@ static void rr_connectivity_changed_locked(void* arg, grpc_error* error) { // Update state counters and new overall state. update_state_counters_locked(sd); update_lb_connectivity_status_locked(sd, GRPC_ERROR_REF(error)); - // If the sd's new state is SHUTDOWN, unref the subchannel. - if (sd->curr_connectivity_state == GRPC_CHANNEL_SHUTDOWN) { - grpc_lb_subchannel_data_stop_connectivity_watch(sd); - grpc_lb_subchannel_data_unref_subchannel(sd, "rr_connectivity_shutdown"); - grpc_lb_subchannel_list_unref_for_connectivity_watch( - sd->subchannel_list, "rr_connectivity_shutdown"); - } else { // sd not in SHUTDOWN - if (sd->curr_connectivity_state == GRPC_CHANNEL_READY) { + // If the sd's new state is TRANSIENT_FAILURE, unref the *connected* + // subchannel, if any. + switch (sd->curr_connectivity_state) { + case GRPC_CHANNEL_TRANSIENT_FAILURE: { + sd->connected_subchannel.reset(); + break; + } + case GRPC_CHANNEL_READY: { if (sd->connected_subchannel == nullptr) { - sd->connected_subchannel = GRPC_CONNECTED_SUBCHANNEL_REF( - grpc_subchannel_get_connected_subchannel(sd->subchannel), - "connected"); + sd->connected_subchannel = + grpc_subchannel_get_connected_subchannel(sd->subchannel); } if (sd->subchannel_list != p->subchannel_list) { // promote sd->subchannel_list to p->subchannel_list. @@ -471,8 +468,7 @@ static void rr_connectivity_changed_locked(void* arg, grpc_error* error) { grpc_lb_policy_pick_state* pick; while ((pick = p->pending_picks)) { p->pending_picks = pick->next; - pick->connected_subchannel = GRPC_CONNECTED_SUBCHANNEL_REF( - selected->connected_subchannel, "rr_picked"); + pick->connected_subchannel = selected->connected_subchannel; if (pick->user_data != nullptr) { *pick->user_data = selected->user_data; } @@ -485,10 +481,15 @@ static void rr_connectivity_changed_locked(void* arg, grpc_error* error) { } GRPC_CLOSURE_SCHED(pick->on_complete, GRPC_ERROR_NONE); } + break; } - // Renew notification. - grpc_lb_subchannel_data_start_connectivity_watch(sd); + case GRPC_CHANNEL_SHUTDOWN: + GPR_UNREACHABLE_CODE(return ); + case GRPC_CHANNEL_CONNECTING: + case GRPC_CHANNEL_IDLE:; // fallthrough } + // Renew notification. + grpc_lb_subchannel_data_start_connectivity_watch(sd); } static grpc_connectivity_state rr_check_connectivity_locked( @@ -512,10 +513,9 @@ static void rr_ping_one_locked(grpc_lb_policy* pol, grpc_closure* on_initiate, if (next_ready_index < p->subchannel_list->num_subchannels) { grpc_lb_subchannel_data* selected = &p->subchannel_list->subchannels[next_ready_index]; - grpc_connected_subchannel* target = GRPC_CONNECTED_SUBCHANNEL_REF( - selected->connected_subchannel, "rr_ping"); - grpc_connected_subchannel_ping(target, on_initiate, on_ack); - GRPC_CONNECTED_SUBCHANNEL_UNREF(target, "rr_ping"); + grpc_core::RefCountedPtr<grpc_core::ConnectedSubchannel> target = + selected->connected_subchannel; + target->Ping(on_initiate, on_ack); } else { GRPC_CLOSURE_SCHED(on_initiate, GRPC_ERROR_CREATE_FROM_STATIC_STRING( "Round Robin not connected")); diff --git a/src/core/ext/filters/client_channel/lb_policy/subchannel_list.cc b/src/core/ext/filters/client_channel/lb_policy/subchannel_list.cc index 5ce1298afc..fa2ffcc796 100644 --- a/src/core/ext/filters/client_channel/lb_policy/subchannel_list.cc +++ b/src/core/ext/filters/client_channel/lb_policy/subchannel_list.cc @@ -42,10 +42,7 @@ void grpc_lb_subchannel_data_unref_subchannel(grpc_lb_subchannel_data* sd, } GRPC_SUBCHANNEL_UNREF(sd->subchannel, reason); sd->subchannel = nullptr; - if (sd->connected_subchannel != nullptr) { - GRPC_CONNECTED_SUBCHANNEL_UNREF(sd->connected_subchannel, reason); - sd->connected_subchannel = nullptr; - } + sd->connected_subchannel.reset(); if (sd->user_data != nullptr) { GPR_ASSERT(sd->user_data_vtable != nullptr); sd->user_data_vtable->destroy(sd->user_data); diff --git a/src/core/ext/filters/client_channel/lb_policy/subchannel_list.h b/src/core/ext/filters/client_channel/lb_policy/subchannel_list.h index 0f8cea9347..f4e345def6 100644 --- a/src/core/ext/filters/client_channel/lb_policy/subchannel_list.h +++ b/src/core/ext/filters/client_channel/lb_policy/subchannel_list.h @@ -22,6 +22,7 @@ #include "src/core/ext/filters/client_channel/lb_policy_registry.h" #include "src/core/ext/filters/client_channel/subchannel.h" #include "src/core/lib/debug/trace.h" +#include "src/core/lib/gpr++/ref_counted_ptr.h" #include "src/core/lib/transport/connectivity_state.h" // TODO(roth): This code is intended to be shared between pick_first and @@ -43,7 +44,7 @@ typedef struct { grpc_lb_subchannel_list* subchannel_list; /** subchannel itself */ grpc_subchannel* subchannel; - grpc_connected_subchannel* connected_subchannel; + grpc_core::RefCountedPtr<grpc_core::ConnectedSubchannel> connected_subchannel; /** Is a connectivity notification pending? */ bool connectivity_notification_pending; /** notification that connectivity has changed on subchannel */ diff --git a/src/core/ext/filters/client_channel/lb_policy_registry.cc b/src/core/ext/filters/client_channel/lb_policy_registry.cc index edd0330c6a..8414504e8f 100644 --- a/src/core/ext/filters/client_channel/lb_policy_registry.cc +++ b/src/core/ext/filters/client_channel/lb_policy_registry.cc @@ -20,7 +20,7 @@ #include <string.h> -#include "src/core/lib/support/string.h" +#include "src/core/lib/gpr/string.h" #define MAX_POLICIES 10 diff --git a/src/core/ext/filters/client_channel/parse_address.cc b/src/core/ext/filters/client_channel/parse_address.cc index 39b1237c77..c3309e36a3 100644 --- a/src/core/ext/filters/client_channel/parse_address.cc +++ b/src/core/ext/filters/client_channel/parse_address.cc @@ -29,7 +29,7 @@ #include <grpc/support/host_port.h> #include <grpc/support/log.h> #include <grpc/support/string_util.h> -#include "src/core/lib/support/string.h" +#include "src/core/lib/gpr/string.h" #ifdef GRPC_HAVE_UNIX_SOCKET diff --git a/src/core/ext/filters/client_channel/resolver/dns/c_ares/dns_resolver_ares.cc b/src/core/ext/filters/client_channel/resolver/dns/c_ares/dns_resolver_ares.cc index 4659a5f3ed..7ea3cdd6e1 100644 --- a/src/core/ext/filters/client_channel/resolver/dns/c_ares/dns_resolver_ares.cc +++ b/src/core/ext/filters/client_channel/resolver/dns/c_ares/dns_resolver_ares.cc @@ -34,14 +34,14 @@ #include "src/core/ext/filters/client_channel/resolver_registry.h" #include "src/core/lib/backoff/backoff.h" #include "src/core/lib/channel/channel_args.h" +#include "src/core/lib/gpr++/manual_constructor.h" +#include "src/core/lib/gpr/env.h" +#include "src/core/lib/gpr/string.h" #include "src/core/lib/iomgr/combiner.h" #include "src/core/lib/iomgr/gethostname.h" #include "src/core/lib/iomgr/resolve_address.h" #include "src/core/lib/iomgr/timer.h" #include "src/core/lib/json/json.h" -#include "src/core/lib/support/env.h" -#include "src/core/lib/support/manual_constructor.h" -#include "src/core/lib/support/string.h" #include "src/core/lib/transport/service_config.h" #define GRPC_DNS_INITIAL_CONNECT_BACKOFF_SECONDS 1 diff --git a/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver_posix.cc b/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver_posix.cc index 40e264504c..2eb2a9b59d 100644 --- a/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver_posix.cc +++ b/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver_posix.cc @@ -30,10 +30,10 @@ #include <grpc/support/time.h> #include <grpc/support/useful.h> #include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.h" +#include "src/core/lib/gpr/string.h" #include "src/core/lib/iomgr/ev_posix.h" #include "src/core/lib/iomgr/iomgr_internal.h" #include "src/core/lib/iomgr/sockaddr_utils.h" -#include "src/core/lib/support/string.h" typedef struct fd_node { /** the owner of this fd node */ diff --git a/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.cc b/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.cc index 3a870b2d06..2b35bdb605 100644 --- a/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.cc +++ b/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.cc @@ -36,12 +36,12 @@ #include "src/core/ext/filters/client_channel/parse_address.h" #include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver.h" +#include "src/core/lib/gpr/string.h" #include "src/core/lib/iomgr/error.h" #include "src/core/lib/iomgr/executor.h" #include "src/core/lib/iomgr/iomgr_internal.h" #include "src/core/lib/iomgr/nameser.h" #include "src/core/lib/iomgr/sockaddr_utils.h" -#include "src/core/lib/support/string.h" static gpr_once g_basic_init = GPR_ONCE_INIT; static gpr_mu g_init_mu; diff --git a/src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.cc b/src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.cc index 1c2cfc08e7..93a1fe87a2 100644 --- a/src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.cc +++ b/src/core/ext/filters/client_channel/resolver/dns/native/dns_resolver.cc @@ -29,12 +29,12 @@ #include "src/core/ext/filters/client_channel/resolver_registry.h" #include "src/core/lib/backoff/backoff.h" #include "src/core/lib/channel/channel_args.h" +#include "src/core/lib/gpr++/manual_constructor.h" +#include "src/core/lib/gpr/env.h" +#include "src/core/lib/gpr/string.h" #include "src/core/lib/iomgr/combiner.h" #include "src/core/lib/iomgr/resolve_address.h" #include "src/core/lib/iomgr/timer.h" -#include "src/core/lib/support/env.h" -#include "src/core/lib/support/manual_constructor.h" -#include "src/core/lib/support/string.h" #define GRPC_DNS_INITIAL_CONNECT_BACKOFF_SECONDS 1 #define GRPC_DNS_RECONNECT_BACKOFF_MULTIPLIER 1.6 diff --git a/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.cc b/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.cc index fe3ad1403c..eaa5e6ac49 100644 --- a/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.cc +++ b/src/core/ext/filters/client_channel/resolver/fake/fake_resolver.cc @@ -32,13 +32,13 @@ #include "src/core/ext/filters/client_channel/parse_address.h" #include "src/core/ext/filters/client_channel/resolver_registry.h" #include "src/core/lib/channel/channel_args.h" +#include "src/core/lib/gpr/string.h" #include "src/core/lib/iomgr/closure.h" #include "src/core/lib/iomgr/combiner.h" #include "src/core/lib/iomgr/resolve_address.h" #include "src/core/lib/iomgr/unix_sockets_posix.h" #include "src/core/lib/slice/slice_internal.h" #include "src/core/lib/slice/slice_string_helpers.h" -#include "src/core/lib/support/string.h" #include "src/core/ext/filters/client_channel/resolver/fake/fake_resolver.h" diff --git a/src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.cc b/src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.cc index 7d1e283fa3..99ad78e23c 100644 --- a/src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.cc +++ b/src/core/ext/filters/client_channel/resolver/sockaddr/sockaddr_resolver.cc @@ -30,12 +30,12 @@ #include "src/core/ext/filters/client_channel/parse_address.h" #include "src/core/ext/filters/client_channel/resolver_registry.h" #include "src/core/lib/channel/channel_args.h" +#include "src/core/lib/gpr/string.h" #include "src/core/lib/iomgr/combiner.h" #include "src/core/lib/iomgr/resolve_address.h" #include "src/core/lib/iomgr/unix_sockets_posix.h" #include "src/core/lib/slice/slice_internal.h" #include "src/core/lib/slice/slice_string_helpers.h" -#include "src/core/lib/support/string.h" typedef struct { /** base class: must be first */ diff --git a/src/core/ext/filters/client_channel/subchannel.cc b/src/core/ext/filters/client_channel/subchannel.cc index a604c55c58..fe4fcbbb7d 100644 --- a/src/core/ext/filters/client_channel/subchannel.cc +++ b/src/core/ext/filters/client_channel/subchannel.cc @@ -37,11 +37,12 @@ #include "src/core/lib/channel/channel_args.h" #include "src/core/lib/channel/connected_channel.h" #include "src/core/lib/debug/stats.h" +#include "src/core/lib/gpr++/debug_location.h" +#include "src/core/lib/gpr++/manual_constructor.h" #include "src/core/lib/iomgr/sockaddr_utils.h" #include "src/core/lib/iomgr/timer.h" #include "src/core/lib/profiling/timers.h" #include "src/core/lib/slice/slice_internal.h" -#include "src/core/lib/support/manual_constructor.h" #include "src/core/lib/surface/channel.h" #include "src/core/lib/surface/channel_init.h" #include "src/core/lib/transport/connectivity_state.h" @@ -55,10 +56,6 @@ #define GRPC_SUBCHANNEL_RECONNECT_MAX_BACKOFF_SECONDS 120 #define GRPC_SUBCHANNEL_RECONNECT_JITTER 0.2 -#define GET_CONNECTED_SUBCHANNEL(subchannel, barrier) \ - ((grpc_connected_subchannel*)(gpr_atm_##barrier##_load( \ - &(subchannel)->connected_subchannel))) - namespace { struct state_watcher { grpc_closure closure; @@ -98,7 +95,7 @@ struct grpc_subchannel { grpc_connect_out_args connecting_result; /** callback for connection finishing */ - grpc_closure connected; + grpc_closure on_connected; /** callback for our alarm */ grpc_closure on_alarm; @@ -107,12 +104,13 @@ struct grpc_subchannel { being setup */ grpc_pollset_set* pollset_set; - /** active connection, or null; of type grpc_connected_subchannel */ - gpr_atm connected_subchannel; - /** mutex protecting remaining elements */ gpr_mu mu; + /** active connection, or null; of type grpc_core::ConnectedSubchannel + */ + grpc_core::RefCountedPtr<grpc_core::ConnectedSubchannel> connected_subchannel; + /** have we seen a disconnection? */ bool disconnected; /** are we connecting */ @@ -136,16 +134,15 @@ struct grpc_subchannel { }; struct grpc_subchannel_call { - grpc_connected_subchannel* connection; + grpc_core::ConnectedSubchannel* connection; grpc_closure* schedule_closure_after_destroy; }; #define SUBCHANNEL_CALL_TO_CALL_STACK(call) ((grpc_call_stack*)((call) + 1)) -#define CHANNEL_STACK_FROM_CONNECTION(con) ((grpc_channel_stack*)(con)) #define CALLSTACK_TO_SUBCHANNEL_CALL(callstack) \ (((grpc_subchannel_call*)(callstack)) - 1) -static void subchannel_connected(void* subchannel, grpc_error* error); +static void on_subchannel_connected(void* subchannel, grpc_error* error); #ifndef NDEBUG #define REF_REASON reason @@ -163,20 +160,9 @@ static void subchannel_connected(void* subchannel, grpc_error* error); */ static void connection_destroy(void* arg, grpc_error* error) { - grpc_connected_subchannel* c = (grpc_connected_subchannel*)arg; - grpc_channel_stack_destroy(CHANNEL_STACK_FROM_CONNECTION(c)); - gpr_free(c); -} - -grpc_connected_subchannel* grpc_connected_subchannel_ref( - grpc_connected_subchannel* c GRPC_SUBCHANNEL_REF_EXTRA_ARGS) { - GRPC_CHANNEL_STACK_REF(CHANNEL_STACK_FROM_CONNECTION(c), REF_REASON); - return c; -} - -void grpc_connected_subchannel_unref( - grpc_connected_subchannel* c GRPC_SUBCHANNEL_REF_EXTRA_ARGS) { - GRPC_CHANNEL_STACK_UNREF(CHANNEL_STACK_FROM_CONNECTION(c), REF_REASON); + grpc_channel_stack* stk = (grpc_channel_stack*)arg; + grpc_channel_stack_destroy(stk); + gpr_free(stk); } /* @@ -243,18 +229,13 @@ grpc_subchannel* grpc_subchannel_ref_from_weak_ref( } static void disconnect(grpc_subchannel* c) { - grpc_connected_subchannel* con; grpc_subchannel_index_unregister(c->key, c); gpr_mu_lock(&c->mu); GPR_ASSERT(!c->disconnected); c->disconnected = true; grpc_connector_shutdown(c->connector, GRPC_ERROR_CREATE_FROM_STATIC_STRING( "Subchannel disconnected")); - con = GET_CONNECTED_SUBCHANNEL(c, no_barrier); - if (con != nullptr) { - GRPC_CONNECTED_SUBCHANNEL_UNREF(con, "connection"); - gpr_atm_no_barrier_store(&c->connected_subchannel, (gpr_atm)0xdeadbeef); - } + c->connected_subchannel.reset(); gpr_mu_unlock(&c->mu); } @@ -374,7 +355,7 @@ grpc_subchannel* grpc_subchannel_create(grpc_connector* connector, if (new_args != nullptr) grpc_channel_args_destroy(new_args); c->root_external_state_watcher.next = c->root_external_state_watcher.prev = &c->root_external_state_watcher; - GRPC_CLOSURE_INIT(&c->connected, subchannel_connected, c, + GRPC_CLOSURE_INIT(&c->on_connected, on_subchannel_connected, c, grpc_schedule_on_exec_ctx); grpc_connectivity_state_init(&c->state_tracker, GRPC_CHANNEL_IDLE, "subchannel"); @@ -397,7 +378,7 @@ static void continue_connect_locked(grpc_subchannel* c) { grpc_connectivity_state_set(&c->state_tracker, GRPC_CHANNEL_CONNECTING, GRPC_ERROR_NONE, "state_change"); grpc_connector_connect(c->connector, &args, &c->connecting_result, - &c->connected); + &c->on_connected); } grpc_connectivity_state grpc_subchannel_check_connectivity(grpc_subchannel* c, @@ -458,7 +439,7 @@ static void maybe_start_connecting_locked(grpc_subchannel* c) { return; } - if (GET_CONNECTED_SUBCHANNEL(c, no_barrier) != nullptr) { + if (c->connected_subchannel != nullptr) { /* Already connected: don't restart */ return; } @@ -481,9 +462,10 @@ static void maybe_start_connecting_locked(grpc_subchannel* c) { const grpc_millis time_til_next = c->next_attempt_deadline - grpc_core::ExecCtx::Get()->Now(); if (time_til_next <= 0) { - gpr_log(GPR_INFO, "Retry immediately"); + gpr_log(GPR_INFO, "Subchannel %p: Retry immediately", c); } else { - gpr_log(GPR_INFO, "Retry in %" PRIdPTR " milliseconds", time_til_next); + gpr_log(GPR_INFO, "Subchannel %p: Retry in %" PRIdPTR " milliseconds", c, + time_til_next); } GRPC_CLOSURE_INIT(&c->on_alarm, on_alarm, c, grpc_schedule_on_exec_ctx); grpc_timer_init(&c->alarm, c->next_attempt_deadline, &c->on_alarm); @@ -527,75 +509,56 @@ void grpc_subchannel_notify_on_state_change( } } -void grpc_connected_subchannel_process_transport_op( - grpc_connected_subchannel* con, grpc_transport_op* op) { - grpc_channel_stack* channel_stack = CHANNEL_STACK_FROM_CONNECTION(con); - grpc_channel_element* top_elem = grpc_channel_stack_element(channel_stack, 0); - top_elem->filter->start_transport_op(top_elem, op); -} - -static void subchannel_on_child_state_changed(void* p, grpc_error* error) { - state_watcher* sw = (state_watcher*)p; - grpc_subchannel* c = sw->subchannel; +static void on_connected_subchannel_connectivity_changed(void* p, + grpc_error* error) { + state_watcher* connected_subchannel_watcher = (state_watcher*)p; + grpc_subchannel* c = connected_subchannel_watcher->subchannel; gpr_mu* mu = &c->mu; gpr_mu_lock(mu); - /* if we failed just leave this closure */ - if (sw->connectivity_state == GRPC_CHANNEL_TRANSIENT_FAILURE) { - /* any errors on a subchannel ==> we're done, create a new one */ - sw->connectivity_state = GRPC_CHANNEL_SHUTDOWN; - } - grpc_connectivity_state_set(&c->state_tracker, sw->connectivity_state, - GRPC_ERROR_REF(error), "reflect_child"); - if (sw->connectivity_state != GRPC_CHANNEL_SHUTDOWN) { - grpc_connected_subchannel_notify_on_state_change( - GET_CONNECTED_SUBCHANNEL(c, no_barrier), nullptr, - &sw->connectivity_state, &sw->closure); - GRPC_SUBCHANNEL_WEAK_REF(c, "state_watcher"); - sw = nullptr; + switch (connected_subchannel_watcher->connectivity_state) { + case GRPC_CHANNEL_TRANSIENT_FAILURE: + case GRPC_CHANNEL_SHUTDOWN: { + if (!c->disconnected && c->connected_subchannel != nullptr) { + if (grpc_trace_stream_refcount.enabled()) { + gpr_log(GPR_INFO, + "Connected subchannel %p of subchannel %p has gone into %s. " + "Attempting to reconnect.", + c->connected_subchannel.get(), c, + grpc_connectivity_state_name( + connected_subchannel_watcher->connectivity_state)); + } + c->connected_subchannel.reset(); + grpc_connectivity_state_set(&c->state_tracker, + GRPC_CHANNEL_TRANSIENT_FAILURE, + GRPC_ERROR_REF(error), "reflect_child"); + c->backoff_begun = false; + c->backoff->Reset(); + maybe_start_connecting_locked(c); + } else { + connected_subchannel_watcher->connectivity_state = + GRPC_CHANNEL_SHUTDOWN; + } + break; + } + default: { + grpc_connectivity_state_set( + &c->state_tracker, connected_subchannel_watcher->connectivity_state, + GRPC_ERROR_REF(error), "reflect_child"); + GRPC_SUBCHANNEL_WEAK_REF(c, "state_watcher"); + c->connected_subchannel->NotifyOnStateChange( + nullptr, &connected_subchannel_watcher->connectivity_state, + &connected_subchannel_watcher->closure); + connected_subchannel_watcher = nullptr; + } } - gpr_mu_unlock(mu); GRPC_SUBCHANNEL_WEAK_UNREF(c, "state_watcher"); - gpr_free(sw); -} - -static void connected_subchannel_state_op(grpc_connected_subchannel* con, - grpc_pollset_set* interested_parties, - grpc_connectivity_state* state, - grpc_closure* closure) { - grpc_transport_op* op = grpc_make_transport_op(nullptr); - grpc_channel_element* elem; - op->connectivity_state = state; - op->on_connectivity_state_change = closure; - op->bind_pollset_set = interested_parties; - elem = grpc_channel_stack_element(CHANNEL_STACK_FROM_CONNECTION(con), 0); - elem->filter->start_transport_op(elem, op); -} - -void grpc_connected_subchannel_notify_on_state_change( - grpc_connected_subchannel* con, grpc_pollset_set* interested_parties, - grpc_connectivity_state* state, grpc_closure* closure) { - connected_subchannel_state_op(con, interested_parties, state, closure); -} - -void grpc_connected_subchannel_ping(grpc_connected_subchannel* con, - grpc_closure* on_initiate, - grpc_closure* on_ack) { - grpc_transport_op* op = grpc_make_transport_op(nullptr); - grpc_channel_element* elem; - op->send_ping.on_initiate = on_initiate; - op->send_ping.on_ack = on_ack; - elem = grpc_channel_stack_element(CHANNEL_STACK_FROM_CONNECTION(con), 0); - elem->filter->start_transport_op(elem, op); + gpr_free(connected_subchannel_watcher); } static bool publish_transport_locked(grpc_subchannel* c) { - grpc_connected_subchannel* con; - grpc_channel_stack* stk; - state_watcher* sw_subchannel; - /* construct channel stack */ grpc_channel_stack_builder* builder = grpc_channel_stack_builder_create(); grpc_channel_stack_builder_set_channel_arguments( @@ -607,8 +570,9 @@ static bool publish_transport_locked(grpc_subchannel* c) { grpc_channel_stack_builder_destroy(builder); return false; } + grpc_channel_stack* stk; grpc_error* error = grpc_channel_stack_builder_finish( - builder, 0, 1, connection_destroy, nullptr, (void**)&con); + builder, 0, 1, connection_destroy, nullptr, (void**)&stk); if (error != GRPC_ERROR_NONE) { grpc_transport_destroy(c->connecting_result.transport); gpr_log(GPR_ERROR, "error initializing subchannel stack: %s", @@ -616,38 +580,37 @@ static bool publish_transport_locked(grpc_subchannel* c) { GRPC_ERROR_UNREF(error); return false; } - stk = CHANNEL_STACK_FROM_CONNECTION(con); memset(&c->connecting_result, 0, sizeof(c->connecting_result)); /* initialize state watcher */ - sw_subchannel = (state_watcher*)gpr_malloc(sizeof(*sw_subchannel)); - sw_subchannel->subchannel = c; - sw_subchannel->connectivity_state = GRPC_CHANNEL_READY; - GRPC_CLOSURE_INIT(&sw_subchannel->closure, subchannel_on_child_state_changed, - sw_subchannel, grpc_schedule_on_exec_ctx); + state_watcher* connected_subchannel_watcher = + (state_watcher*)gpr_zalloc(sizeof(*connected_subchannel_watcher)); + connected_subchannel_watcher->subchannel = c; + connected_subchannel_watcher->connectivity_state = GRPC_CHANNEL_READY; + GRPC_CLOSURE_INIT(&connected_subchannel_watcher->closure, + on_connected_subchannel_connectivity_changed, + connected_subchannel_watcher, grpc_schedule_on_exec_ctx); if (c->disconnected) { - gpr_free(sw_subchannel); + gpr_free(connected_subchannel_watcher); grpc_channel_stack_destroy(stk); - gpr_free(con); + gpr_free(stk); return false; } /* publish */ - /* TODO(ctiller): this full barrier seems to clear up a TSAN failure. - I'd have expected the rel_cas below to be enough, but - seemingly it's not. - Re-evaluate if we really need this. */ - gpr_atm_full_barrier(); - GPR_ASSERT(gpr_atm_rel_cas(&c->connected_subchannel, 0, (gpr_atm)con)); + c->connected_subchannel.reset( + grpc_core::New<grpc_core::ConnectedSubchannel>(stk)); + gpr_log(GPR_INFO, "New connected subchannel at %p for subchannel %p", + c->connected_subchannel.get(), c); /* setup subchannel watching connected subchannel for changes; subchannel ref for connecting is donated to the state watcher */ GRPC_SUBCHANNEL_WEAK_REF(c, "state_watcher"); GRPC_SUBCHANNEL_WEAK_UNREF(c, "connecting"); - grpc_connected_subchannel_notify_on_state_change( - con, c->pollset_set, &sw_subchannel->connectivity_state, - &sw_subchannel->closure); + c->connected_subchannel->NotifyOnStateChange( + c->pollset_set, &connected_subchannel_watcher->connectivity_state, + &connected_subchannel_watcher->closure); /* signal completion */ grpc_connectivity_state_set(&c->state_tracker, GRPC_CHANNEL_READY, @@ -655,11 +618,11 @@ static bool publish_transport_locked(grpc_subchannel* c) { return true; } -static void subchannel_connected(void* arg, grpc_error* error) { +static void on_subchannel_connected(void* arg, grpc_error* error) { grpc_subchannel* c = (grpc_subchannel*)arg; grpc_channel_args* delete_channel_args = c->connecting_result.channel_args; - GRPC_SUBCHANNEL_WEAK_REF(c, "connected"); + GRPC_SUBCHANNEL_WEAK_REF(c, "on_subchannel_connected"); gpr_mu_lock(&c->mu); c->connecting = false; if (c->connecting_result.transport != nullptr && @@ -694,10 +657,10 @@ static void subchannel_call_destroy(void* call, grpc_error* error) { grpc_subchannel_call* c = (grpc_subchannel_call*)call; GPR_ASSERT(c->schedule_closure_after_destroy != nullptr); GPR_TIMER_BEGIN("grpc_subchannel_call_unref.destroy", 0); - grpc_connected_subchannel* connection = c->connection; + grpc_core::ConnectedSubchannel* connection = c->connection; grpc_call_stack_destroy(SUBCHANNEL_CALL_TO_CALL_STACK(c), nullptr, c->schedule_closure_after_destroy); - GRPC_CONNECTED_SUBCHANNEL_UNREF(connection, "subchannel_call"); + connection->Unref(DEBUG_LOCATION, "subchannel_call"); GPR_TIMER_END("grpc_subchannel_call_unref.destroy", 0); } @@ -728,9 +691,12 @@ void grpc_subchannel_call_process_op(grpc_subchannel_call* call, GPR_TIMER_END("grpc_subchannel_call_process_op", 0); } -grpc_connected_subchannel* grpc_subchannel_get_connected_subchannel( - grpc_subchannel* c) { - return GET_CONNECTED_SUBCHANNEL(c, acq); +grpc_core::RefCountedPtr<grpc_core::ConnectedSubchannel> +grpc_subchannel_get_connected_subchannel(grpc_subchannel* c) { + gpr_mu_lock(&c->mu); + auto copy = c->connected_subchannel; + gpr_mu_unlock(&c->mu); + return copy; } const grpc_subchannel_key* grpc_subchannel_get_key( @@ -738,36 +704,6 @@ const grpc_subchannel_key* grpc_subchannel_get_key( return subchannel->key; } -grpc_error* grpc_connected_subchannel_create_call( - grpc_connected_subchannel* con, - const grpc_connected_subchannel_call_args* args, - grpc_subchannel_call** call) { - grpc_channel_stack* chanstk = CHANNEL_STACK_FROM_CONNECTION(con); - *call = (grpc_subchannel_call*)gpr_arena_alloc( - args->arena, sizeof(grpc_subchannel_call) + chanstk->call_stack_size); - grpc_call_stack* callstk = SUBCHANNEL_CALL_TO_CALL_STACK(*call); - (*call)->connection = GRPC_CONNECTED_SUBCHANNEL_REF(con, "subchannel_call"); - const grpc_call_element_args call_args = { - callstk, /* call_stack */ - nullptr, /* server_transport_data */ - args->context, /* context */ - args->path, /* path */ - args->start_time, /* start_time */ - args->deadline, /* deadline */ - args->arena, /* arena */ - args->call_combiner /* call_combiner */ - }; - grpc_error* error = grpc_call_stack_init(chanstk, 1, subchannel_call_destroy, - *call, &call_args); - if (error != GRPC_ERROR_NONE) { - const char* error_string = grpc_error_string(error); - gpr_log(GPR_ERROR, "error: %s", error_string); - return error; - } - grpc_call_stack_set_pollset_or_pollset_set(callstk, args->pollent); - return GRPC_ERROR_NONE; -} - grpc_call_stack* grpc_subchannel_call_get_call_stack( grpc_subchannel_call* subchannel_call) { return SUBCHANNEL_CALL_TO_CALL_STACK(subchannel_call); @@ -803,3 +739,64 @@ grpc_arg grpc_create_subchannel_address_arg(const grpc_resolved_address* addr) { (char*)GRPC_ARG_SUBCHANNEL_ADDRESS, addr->len > 0 ? grpc_sockaddr_to_uri(addr) : gpr_strdup("")); } + +namespace grpc_core { +ConnectedSubchannel::ConnectedSubchannel(grpc_channel_stack* channel_stack) + : grpc_core::RefCountedWithTracing(&grpc_trace_stream_refcount), + channel_stack_(channel_stack) {} + +ConnectedSubchannel::~ConnectedSubchannel() { + GRPC_CHANNEL_STACK_UNREF(channel_stack_, "connected_subchannel_dtor"); +} + +void ConnectedSubchannel::NotifyOnStateChange( + grpc_pollset_set* interested_parties, grpc_connectivity_state* state, + grpc_closure* closure) { + grpc_transport_op* op = grpc_make_transport_op(nullptr); + grpc_channel_element* elem; + op->connectivity_state = state; + op->on_connectivity_state_change = closure; + op->bind_pollset_set = interested_parties; + elem = grpc_channel_stack_element(channel_stack_, 0); + elem->filter->start_transport_op(elem, op); +} + +void ConnectedSubchannel::Ping(grpc_closure* on_initiate, + grpc_closure* on_ack) { + grpc_transport_op* op = grpc_make_transport_op(nullptr); + grpc_channel_element* elem; + op->send_ping.on_initiate = on_initiate; + op->send_ping.on_ack = on_ack; + elem = grpc_channel_stack_element(channel_stack_, 0); + elem->filter->start_transport_op(elem, op); +} + +grpc_error* ConnectedSubchannel::CreateCall(const CallArgs& args, + grpc_subchannel_call** call) { + *call = (grpc_subchannel_call*)gpr_arena_alloc( + args.arena, + sizeof(grpc_subchannel_call) + channel_stack_->call_stack_size); + grpc_call_stack* callstk = SUBCHANNEL_CALL_TO_CALL_STACK(*call); + Ref(DEBUG_LOCATION, "subchannel_call"); + (*call)->connection = this; + const grpc_call_element_args call_args = { + callstk, /* call_stack */ + nullptr, /* server_transport_data */ + args.context, /* context */ + args.path, /* path */ + args.start_time, /* start_time */ + args.deadline, /* deadline */ + args.arena, /* arena */ + args.call_combiner /* call_combiner */ + }; + grpc_error* error = grpc_call_stack_init( + channel_stack_, 1, subchannel_call_destroy, *call, &call_args); + if (error != GRPC_ERROR_NONE) { + const char* error_string = grpc_error_string(error); + gpr_log(GPR_ERROR, "error: %s", error_string); + return error; + } + grpc_call_stack_set_pollset_or_pollset_set(callstk, args.pollent); + return GRPC_ERROR_NONE; +} +} // namespace grpc_core diff --git a/src/core/ext/filters/client_channel/subchannel.h b/src/core/ext/filters/client_channel/subchannel.h index 9d34fff07a..f2a5c1e273 100644 --- a/src/core/ext/filters/client_channel/subchannel.h +++ b/src/core/ext/filters/client_channel/subchannel.h @@ -21,8 +21,10 @@ #include "src/core/ext/filters/client_channel/connector.h" #include "src/core/lib/channel/channel_stack.h" +#include "src/core/lib/gpr++/ref_counted.h" +#include "src/core/lib/gpr++/ref_counted_ptr.h" +#include "src/core/lib/gpr/arena.h" #include "src/core/lib/iomgr/polling_entity.h" -#include "src/core/lib/support/arena.h" #include "src/core/lib/transport/connectivity_state.h" #include "src/core/lib/transport/metadata.h" @@ -32,7 +34,6 @@ /** A (sub-)channel that knows how to connect to exactly one target address. Provides a target for load balancing. */ typedef struct grpc_subchannel grpc_subchannel; -typedef struct grpc_connected_subchannel grpc_connected_subchannel; typedef struct grpc_subchannel_call grpc_subchannel_call; typedef struct grpc_subchannel_args grpc_subchannel_args; typedef struct grpc_subchannel_key grpc_subchannel_key; @@ -48,10 +49,6 @@ typedef struct grpc_subchannel_key grpc_subchannel_key; grpc_subchannel_weak_ref((p), __FILE__, __LINE__, (r)) #define GRPC_SUBCHANNEL_WEAK_UNREF(p, r) \ grpc_subchannel_weak_unref((p), __FILE__, __LINE__, (r)) -#define GRPC_CONNECTED_SUBCHANNEL_REF(p, r) \ - grpc_connected_subchannel_ref((p), __FILE__, __LINE__, (r)) -#define GRPC_CONNECTED_SUBCHANNEL_UNREF(p, r) \ - grpc_connected_subchannel_unref((p), __FILE__, __LINE__, (r)) #define GRPC_SUBCHANNEL_CALL_REF(p, r) \ grpc_subchannel_call_ref((p), __FILE__, __LINE__, (r)) #define GRPC_SUBCHANNEL_CALL_UNREF(p, r) \ @@ -65,14 +62,39 @@ typedef struct grpc_subchannel_key grpc_subchannel_key; #define GRPC_SUBCHANNEL_UNREF(p, r) grpc_subchannel_unref((p)) #define GRPC_SUBCHANNEL_WEAK_REF(p, r) grpc_subchannel_weak_ref((p)) #define GRPC_SUBCHANNEL_WEAK_UNREF(p, r) grpc_subchannel_weak_unref((p)) -#define GRPC_CONNECTED_SUBCHANNEL_REF(p, r) grpc_connected_subchannel_ref((p)) -#define GRPC_CONNECTED_SUBCHANNEL_UNREF(p, r) \ - grpc_connected_subchannel_unref((p)) #define GRPC_SUBCHANNEL_CALL_REF(p, r) grpc_subchannel_call_ref((p)) #define GRPC_SUBCHANNEL_CALL_UNREF(p, r) grpc_subchannel_call_unref((p)) #define GRPC_SUBCHANNEL_REF_EXTRA_ARGS #endif +namespace grpc_core { +class ConnectedSubchannel : public grpc_core::RefCountedWithTracing { + public: + struct CallArgs { + grpc_polling_entity* pollent; + grpc_slice path; + gpr_timespec start_time; + grpc_millis deadline; + gpr_arena* arena; + grpc_call_context_element* context; + grpc_call_combiner* call_combiner; + }; + + explicit ConnectedSubchannel(grpc_channel_stack* channel_stack); + ~ConnectedSubchannel(); + + grpc_channel_stack* channel_stack() { return channel_stack_; } + void NotifyOnStateChange(grpc_pollset_set* interested_parties, + grpc_connectivity_state* state, + grpc_closure* closure); + void Ping(grpc_closure* on_initiate, grpc_closure* on_ack); + grpc_error* CreateCall(const CallArgs& args, grpc_subchannel_call** call); + + private: + grpc_channel_stack* channel_stack_; +}; +} // namespace grpc_core + grpc_subchannel* grpc_subchannel_ref( grpc_subchannel* channel GRPC_SUBCHANNEL_REF_EXTRA_ARGS); grpc_subchannel* grpc_subchannel_ref_from_weak_ref( @@ -83,35 +105,11 @@ grpc_subchannel* grpc_subchannel_weak_ref( grpc_subchannel* channel GRPC_SUBCHANNEL_REF_EXTRA_ARGS); void grpc_subchannel_weak_unref( grpc_subchannel* channel GRPC_SUBCHANNEL_REF_EXTRA_ARGS); -grpc_connected_subchannel* grpc_connected_subchannel_ref( - grpc_connected_subchannel* channel GRPC_SUBCHANNEL_REF_EXTRA_ARGS); -void grpc_connected_subchannel_unref( - grpc_connected_subchannel* channel GRPC_SUBCHANNEL_REF_EXTRA_ARGS); void grpc_subchannel_call_ref( grpc_subchannel_call* call GRPC_SUBCHANNEL_REF_EXTRA_ARGS); void grpc_subchannel_call_unref( grpc_subchannel_call* call GRPC_SUBCHANNEL_REF_EXTRA_ARGS); -/** construct a subchannel call */ -typedef struct { - grpc_polling_entity* pollent; - grpc_slice path; - gpr_timespec start_time; - grpc_millis deadline; - gpr_arena* arena; - grpc_call_context_element* context; - grpc_call_combiner* call_combiner; -} grpc_connected_subchannel_call_args; - -grpc_error* grpc_connected_subchannel_create_call( - grpc_connected_subchannel* connected_subchannel, - const grpc_connected_subchannel_call_args* args, - grpc_subchannel_call** subchannel_call); - -/** process a transport level op */ -void grpc_connected_subchannel_process_transport_op( - grpc_connected_subchannel* subchannel, grpc_transport_op* op); - /** poll the current connectivity state of a channel */ grpc_connectivity_state grpc_subchannel_check_connectivity( grpc_subchannel* channel, grpc_error** error); @@ -121,17 +119,12 @@ grpc_connectivity_state grpc_subchannel_check_connectivity( void grpc_subchannel_notify_on_state_change( grpc_subchannel* channel, grpc_pollset_set* interested_parties, grpc_connectivity_state* state, grpc_closure* notify); -void grpc_connected_subchannel_notify_on_state_change( - grpc_connected_subchannel* channel, grpc_pollset_set* interested_parties, - grpc_connectivity_state* state, grpc_closure* notify); -void grpc_connected_subchannel_ping(grpc_connected_subchannel* channel, - grpc_closure* on_initiate, - grpc_closure* on_ack); - -/** retrieve the grpc_connected_subchannel - or NULL if called before - the subchannel becomes connected */ -grpc_connected_subchannel* grpc_subchannel_get_connected_subchannel( - grpc_subchannel* subchannel); + +/** retrieve the grpc_core::ConnectedSubchannel - or nullptr if not connected + * (which may happen before it initially connects or during transient failures) + * */ +grpc_core::RefCountedPtr<grpc_core::ConnectedSubchannel> +grpc_subchannel_get_connected_subchannel(grpc_subchannel* c); /** return the subchannel index key for \a subchannel */ const grpc_subchannel_key* grpc_subchannel_get_key( diff --git a/src/core/ext/filters/client_channel/uri_parser.cc b/src/core/ext/filters/client_channel/uri_parser.cc index 3428f4b54c..c5f2d6822c 100644 --- a/src/core/ext/filters/client_channel/uri_parser.cc +++ b/src/core/ext/filters/client_channel/uri_parser.cc @@ -26,10 +26,10 @@ #include <grpc/support/port_platform.h> #include <grpc/support/string_util.h> +#include "src/core/lib/gpr/string.h" #include "src/core/lib/slice/percent_encoding.h" #include "src/core/lib/slice/slice_internal.h" #include "src/core/lib/slice/slice_string_helpers.h" -#include "src/core/lib/support/string.h" /** a size_t default value... maps to all 1's */ #define NOT_SET (~(size_t)0) diff --git a/src/core/ext/filters/http/client/http_client_filter.cc b/src/core/ext/filters/http/client/http_client_filter.cc index 6dbd8c2a6d..5584d50018 100644 --- a/src/core/ext/filters/http/client/http_client_filter.cc +++ b/src/core/ext/filters/http/client/http_client_filter.cc @@ -20,12 +20,12 @@ #include <grpc/support/log.h> #include <grpc/support/string_util.h> #include <string.h> +#include "src/core/lib/gpr/string.h" #include "src/core/lib/profiling/timers.h" #include "src/core/lib/slice/b64.h" #include "src/core/lib/slice/percent_encoding.h" #include "src/core/lib/slice/slice_internal.h" #include "src/core/lib/slice/slice_string_helpers.h" -#include "src/core/lib/support/string.h" #include "src/core/lib/transport/static_metadata.h" #include "src/core/lib/transport/transport_impl.h" diff --git a/src/core/ext/filters/http/message_compress/message_compress_filter.cc b/src/core/ext/filters/http/message_compress/message_compress_filter.cc index 92d1716200..d0b9750497 100644 --- a/src/core/ext/filters/http/message_compress/message_compress_filter.cc +++ b/src/core/ext/filters/http/message_compress/message_compress_filter.cc @@ -28,10 +28,10 @@ #include "src/core/lib/channel/channel_args.h" #include "src/core/lib/compression/algorithm_metadata.h" #include "src/core/lib/compression/message_compress.h" +#include "src/core/lib/gpr/string.h" #include "src/core/lib/profiling/timers.h" #include "src/core/lib/slice/slice_internal.h" #include "src/core/lib/slice/slice_string_helpers.h" -#include "src/core/lib/support/string.h" #include "src/core/lib/surface/call.h" #include "src/core/lib/transport/static_metadata.h" diff --git a/src/core/ext/filters/message_size/message_size_filter.cc b/src/core/ext/filters/message_size/message_size_filter.cc index 3cb7b136c0..8d76c4a837 100644 --- a/src/core/ext/filters/message_size/message_size_filter.cc +++ b/src/core/ext/filters/message_size/message_size_filter.cc @@ -26,7 +26,7 @@ #include "src/core/lib/channel/channel_args.h" #include "src/core/lib/channel/channel_stack_builder.h" -#include "src/core/lib/support/string.h" +#include "src/core/lib/gpr/string.h" #include "src/core/lib/surface/channel_init.h" #include "src/core/lib/transport/service_config.h" |