| /* |
| * |
| * Copyright 2017 gRPC authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| #include <grpc/support/port_platform.h> |
| |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/string_util.h> |
| #include <grpc/support/sync.h> |
| #include <grpc/support/time.h> |
| #include <string.h> |
| #include "src/core/ext/transport/inproc/inproc_transport.h" |
| #include "src/core/lib/channel/channel_args.h" |
| #include "src/core/lib/gprpp/manual_constructor.h" |
| #include "src/core/lib/slice/slice_internal.h" |
| #include "src/core/lib/surface/api_trace.h" |
| #include "src/core/lib/surface/channel.h" |
| #include "src/core/lib/surface/channel_stack_type.h" |
| #include "src/core/lib/surface/server.h" |
| #include "src/core/lib/transport/connectivity_state.h" |
| #include "src/core/lib/transport/error_utils.h" |
| #include "src/core/lib/transport/transport_impl.h" |
| |
| #define INPROC_LOG(...) \ |
| do { \ |
| if (grpc_inproc_trace.enabled()) gpr_log(__VA_ARGS__); \ |
| } while (0) |
| |
| namespace { |
| grpc_slice g_empty_slice; |
| grpc_slice g_fake_path_key; |
| grpc_slice g_fake_path_value; |
| grpc_slice g_fake_auth_key; |
| grpc_slice g_fake_auth_value; |
| |
| struct inproc_stream; |
| bool cancel_stream_locked(inproc_stream* s, grpc_error* error); |
| void op_state_machine(void* arg, grpc_error* error); |
| void log_metadata(const grpc_metadata_batch* md_batch, bool is_client, |
| bool is_initial); |
| grpc_error* fill_in_metadata(inproc_stream* s, |
| const grpc_metadata_batch* metadata, |
| uint32_t flags, grpc_metadata_batch* out_md, |
| uint32_t* outflags, bool* markfilled); |
| |
| struct shared_mu { |
| shared_mu() { |
| // Share one lock between both sides since both sides get affected |
| gpr_mu_init(&mu); |
| gpr_ref_init(&refs, 2); |
| } |
| |
| gpr_mu mu; |
| gpr_refcount refs; |
| }; |
| |
| struct inproc_transport { |
| inproc_transport(const grpc_transport_vtable* vtable, shared_mu* mu, |
| bool is_client) |
| : mu(mu), is_client(is_client) { |
| base.vtable = vtable; |
| // Start each side of transport with 2 refs since they each have a ref |
| // to the other |
| gpr_ref_init(&refs, 2); |
| grpc_connectivity_state_init(&connectivity, GRPC_CHANNEL_READY, |
| is_client ? "inproc_client" : "inproc_server"); |
| } |
| |
| ~inproc_transport() { |
| grpc_connectivity_state_destroy(&connectivity); |
| if (gpr_unref(&mu->refs)) { |
| gpr_free(mu); |
| } |
| } |
| |
| void ref() { |
| INPROC_LOG(GPR_INFO, "ref_transport %p", this); |
| gpr_ref(&refs); |
| } |
| |
| void unref() { |
| INPROC_LOG(GPR_INFO, "unref_transport %p", this); |
| if (!gpr_unref(&refs)) { |
| return; |
| } |
| INPROC_LOG(GPR_INFO, "really_destroy_transport %p", this); |
| this->~inproc_transport(); |
| gpr_free(this); |
| } |
| |
| grpc_transport base; |
| shared_mu* mu; |
| gpr_refcount refs; |
| bool is_client; |
| grpc_connectivity_state_tracker connectivity; |
| void (*accept_stream_cb)(void* user_data, grpc_transport* transport, |
| const void* server_data); |
| void* accept_stream_data; |
| bool is_closed = false; |
| struct inproc_transport* other_side; |
| struct inproc_stream* stream_list = nullptr; |
| }; |
| |
| struct inproc_stream { |
| inproc_stream(inproc_transport* t, grpc_stream_refcount* refcount, |
| const void* server_data, gpr_arena* arena) |
| : t(t), refs(refcount), arena(arena) { |
| // Ref this stream right now for ctor and list. |
| ref("inproc_init_stream:init"); |
| ref("inproc_init_stream:list"); |
| |
| grpc_metadata_batch_init(&to_read_initial_md); |
| grpc_metadata_batch_init(&to_read_trailing_md); |
| GRPC_CLOSURE_INIT(&op_closure, op_state_machine, this, |
| grpc_schedule_on_exec_ctx); |
| grpc_metadata_batch_init(&write_buffer_initial_md); |
| grpc_metadata_batch_init(&write_buffer_trailing_md); |
| |
| stream_list_prev = nullptr; |
| gpr_mu_lock(&t->mu->mu); |
| stream_list_next = t->stream_list; |
| if (t->stream_list) { |
| t->stream_list->stream_list_prev = this; |
| } |
| t->stream_list = this; |
| gpr_mu_unlock(&t->mu->mu); |
| |
| if (!server_data) { |
| t->ref(); |
| inproc_transport* st = t->other_side; |
| st->ref(); |
| other_side = nullptr; // will get filled in soon |
| // Pass the client-side stream address to the server-side for a ref |
| ref("inproc_init_stream:clt"); // ref it now on behalf of server |
| // side to avoid destruction |
| INPROC_LOG(GPR_INFO, "calling accept stream cb %p %p", |
| st->accept_stream_cb, st->accept_stream_data); |
| (*st->accept_stream_cb)(st->accept_stream_data, &st->base, (void*)this); |
| } else { |
| // This is the server-side and is being called through accept_stream_cb |
| inproc_stream* cs = (inproc_stream*)server_data; |
| other_side = cs; |
| // Ref the server-side stream on behalf of the client now |
| ref("inproc_init_stream:srv"); |
| |
| // Now we are about to affect the other side, so lock the transport |
| // to make sure that it doesn't get destroyed |
| gpr_mu_lock(&t->mu->mu); |
| cs->other_side = this; |
| // Now transfer from the other side's write_buffer if any to the to_read |
| // buffer |
| if (cs->write_buffer_initial_md_filled) { |
| fill_in_metadata(this, &cs->write_buffer_initial_md, |
| cs->write_buffer_initial_md_flags, &to_read_initial_md, |
| &to_read_initial_md_flags, &to_read_initial_md_filled); |
| deadline = GPR_MIN(deadline, cs->write_buffer_deadline); |
| grpc_metadata_batch_clear(&cs->write_buffer_initial_md); |
| cs->write_buffer_initial_md_filled = false; |
| } |
| if (cs->write_buffer_trailing_md_filled) { |
| fill_in_metadata(this, &cs->write_buffer_trailing_md, 0, |
| &to_read_trailing_md, nullptr, |
| &to_read_trailing_md_filled); |
| grpc_metadata_batch_clear(&cs->write_buffer_trailing_md); |
| cs->write_buffer_trailing_md_filled = false; |
| } |
| if (cs->write_buffer_cancel_error != GRPC_ERROR_NONE) { |
| cancel_other_error = cs->write_buffer_cancel_error; |
| cs->write_buffer_cancel_error = GRPC_ERROR_NONE; |
| } |
| |
| gpr_mu_unlock(&t->mu->mu); |
| } |
| } |
| |
| ~inproc_stream() { |
| GRPC_ERROR_UNREF(write_buffer_cancel_error); |
| GRPC_ERROR_UNREF(cancel_self_error); |
| GRPC_ERROR_UNREF(cancel_other_error); |
| |
| if (recv_inited) { |
| grpc_slice_buffer_destroy_internal(&recv_message); |
| } |
| |
| t->unref(); |
| |
| if (closure_at_destroy) { |
| GRPC_CLOSURE_SCHED(closure_at_destroy, GRPC_ERROR_NONE); |
| } |
| } |
| |
| #ifndef NDEBUG |
| #define STREAM_REF(refs, reason) grpc_stream_ref(refs, reason) |
| #define STREAM_UNREF(refs, reason) grpc_stream_unref(refs, reason) |
| #else |
| #define STREAM_REF(refs, reason) grpc_stream_ref(refs) |
| #define STREAM_UNREF(refs, reason) grpc_stream_unref(refs) |
| #endif |
| void ref(const char* reason) { |
| INPROC_LOG(GPR_INFO, "ref_stream %p %s", this, reason); |
| STREAM_REF(refs, reason); |
| } |
| |
| void unref(const char* reason) { |
| INPROC_LOG(GPR_INFO, "unref_stream %p %s", this, reason); |
| STREAM_UNREF(refs, reason); |
| } |
| #undef STREAM_REF |
| #undef STREAM_UNREF |
| |
| inproc_transport* t; |
| grpc_metadata_batch to_read_initial_md; |
| uint32_t to_read_initial_md_flags = 0; |
| bool to_read_initial_md_filled = false; |
| grpc_metadata_batch to_read_trailing_md; |
| bool to_read_trailing_md_filled = false; |
| bool ops_needed = false; |
| bool op_closure_scheduled = false; |
| grpc_closure op_closure; |
| // Write buffer used only during gap at init time when client-side |
| // stream is set up but server side stream is not yet set up |
| grpc_metadata_batch write_buffer_initial_md; |
| bool write_buffer_initial_md_filled = false; |
| uint32_t write_buffer_initial_md_flags = 0; |
| grpc_millis write_buffer_deadline = GRPC_MILLIS_INF_FUTURE; |
| grpc_metadata_batch write_buffer_trailing_md; |
| bool write_buffer_trailing_md_filled = false; |
| grpc_error* write_buffer_cancel_error = GRPC_ERROR_NONE; |
| |
| struct inproc_stream* other_side; |
| bool other_side_closed = false; // won't talk anymore |
| bool write_buffer_other_side_closed = false; // on hold |
| grpc_stream_refcount* refs; |
| grpc_closure* closure_at_destroy = nullptr; |
| |
| gpr_arena* arena; |
| |
| grpc_transport_stream_op_batch* send_message_op = nullptr; |
| grpc_transport_stream_op_batch* send_trailing_md_op = nullptr; |
| grpc_transport_stream_op_batch* recv_initial_md_op = nullptr; |
| grpc_transport_stream_op_batch* recv_message_op = nullptr; |
| grpc_transport_stream_op_batch* recv_trailing_md_op = nullptr; |
| |
| grpc_slice_buffer recv_message; |
| grpc_core::ManualConstructor<grpc_core::SliceBufferByteStream> recv_stream; |
| bool recv_inited = false; |
| |
| bool initial_md_sent = false; |
| bool trailing_md_sent = false; |
| bool initial_md_recvd = false; |
| bool trailing_md_recvd = false; |
| |
| bool closed = false; |
| |
| grpc_error* cancel_self_error = GRPC_ERROR_NONE; |
| grpc_error* cancel_other_error = GRPC_ERROR_NONE; |
| |
| grpc_millis deadline = GRPC_MILLIS_INF_FUTURE; |
| |
| bool listed = true; |
| struct inproc_stream* stream_list_prev; |
| struct inproc_stream* stream_list_next; |
| }; |
| |
| void log_metadata(const grpc_metadata_batch* md_batch, bool is_client, |
| bool is_initial) { |
| for (grpc_linked_mdelem* md = md_batch->list.head; md != nullptr; |
| md = md->next) { |
| char* key = grpc_slice_to_c_string(GRPC_MDKEY(md->md)); |
| char* value = grpc_slice_to_c_string(GRPC_MDVALUE(md->md)); |
| gpr_log(GPR_INFO, "INPROC:%s:%s: %s: %s", is_initial ? "HDR" : "TRL", |
| is_client ? "CLI" : "SVR", key, value); |
| gpr_free(key); |
| gpr_free(value); |
| } |
| } |
| |
| grpc_error* fill_in_metadata(inproc_stream* s, |
| const grpc_metadata_batch* metadata, |
| uint32_t flags, grpc_metadata_batch* out_md, |
| uint32_t* outflags, bool* markfilled) { |
| if (grpc_inproc_trace.enabled()) { |
| log_metadata(metadata, s->t->is_client, outflags != nullptr); |
| } |
| |
| if (outflags != nullptr) { |
| *outflags = flags; |
| } |
| if (markfilled != nullptr) { |
| *markfilled = true; |
| } |
| grpc_error* error = GRPC_ERROR_NONE; |
| for (grpc_linked_mdelem* elem = metadata->list.head; |
| (elem != nullptr) && (error == GRPC_ERROR_NONE); elem = elem->next) { |
| grpc_linked_mdelem* nelem = static_cast<grpc_linked_mdelem*>( |
| gpr_arena_alloc(s->arena, sizeof(*nelem))); |
| nelem->md = |
| grpc_mdelem_from_slices(grpc_slice_intern(GRPC_MDKEY(elem->md)), |
| grpc_slice_intern(GRPC_MDVALUE(elem->md))); |
| |
| error = grpc_metadata_batch_link_tail(out_md, nelem); |
| } |
| return error; |
| } |
| |
| int init_stream(grpc_transport* gt, grpc_stream* gs, |
| grpc_stream_refcount* refcount, const void* server_data, |
| gpr_arena* arena) { |
| INPROC_LOG(GPR_INFO, "init_stream %p %p %p", gt, gs, server_data); |
| inproc_transport* t = reinterpret_cast<inproc_transport*>(gt); |
| new (gs) inproc_stream(t, refcount, server_data, arena); |
| return 0; // return value is not important |
| } |
| |
| void close_stream_locked(inproc_stream* s) { |
| if (!s->closed) { |
| // Release the metadata that we would have written out |
| grpc_metadata_batch_destroy(&s->write_buffer_initial_md); |
| grpc_metadata_batch_destroy(&s->write_buffer_trailing_md); |
| |
| if (s->listed) { |
| inproc_stream* p = s->stream_list_prev; |
| inproc_stream* n = s->stream_list_next; |
| if (p != nullptr) { |
| p->stream_list_next = n; |
| } else { |
| s->t->stream_list = n; |
| } |
| if (n != nullptr) { |
| n->stream_list_prev = p; |
| } |
| s->listed = false; |
| s->unref("close_stream:list"); |
| } |
| s->closed = true; |
| s->unref("close_stream:closing"); |
| } |
| } |
| |
| // This function means that we are done talking/listening to the other side |
| void close_other_side_locked(inproc_stream* s, const char* reason) { |
| if (s->other_side != nullptr) { |
| // First release the metadata that came from the other side's arena |
| grpc_metadata_batch_destroy(&s->to_read_initial_md); |
| grpc_metadata_batch_destroy(&s->to_read_trailing_md); |
| |
| s->other_side->unref(reason); |
| s->other_side_closed = true; |
| s->other_side = nullptr; |
| } else if (!s->other_side_closed) { |
| s->write_buffer_other_side_closed = true; |
| } |
| } |
| |
| // Call the on_complete closure associated with this stream_op_batch if |
| // this stream_op_batch is only one of the pending operations for this |
| // stream. This is called when one of the pending operations for the stream |
| // is done and about to be NULLed out |
| void complete_if_batch_end_locked(inproc_stream* s, grpc_error* error, |
| grpc_transport_stream_op_batch* op, |
| const char* msg) { |
| int is_sm = static_cast<int>(op == s->send_message_op); |
| int is_stm = static_cast<int>(op == s->send_trailing_md_op); |
| // TODO(vjpai): We should not consider the recv ops here, since they |
| // have their own callbacks. We should invoke a batch's on_complete |
| // as soon as all of the batch's send ops are complete, even if there |
| // are still recv ops pending. |
| int is_rim = static_cast<int>(op == s->recv_initial_md_op); |
| int is_rm = static_cast<int>(op == s->recv_message_op); |
| int is_rtm = static_cast<int>(op == s->recv_trailing_md_op); |
| |
| if ((is_sm + is_stm + is_rim + is_rm + is_rtm) == 1) { |
| INPROC_LOG(GPR_INFO, "%s %p %p %p", msg, s, op, error); |
| GRPC_CLOSURE_SCHED(op->on_complete, GRPC_ERROR_REF(error)); |
| } |
| } |
| |
| void maybe_schedule_op_closure_locked(inproc_stream* s, grpc_error* error) { |
| if (s && s->ops_needed && !s->op_closure_scheduled) { |
| GRPC_CLOSURE_SCHED(&s->op_closure, GRPC_ERROR_REF(error)); |
| s->op_closure_scheduled = true; |
| s->ops_needed = false; |
| } |
| } |
| |
| void fail_helper_locked(inproc_stream* s, grpc_error* error) { |
| INPROC_LOG(GPR_INFO, "op_state_machine %p fail_helper", s); |
| // If we're failing this side, we need to make sure that |
| // we also send or have already sent trailing metadata |
| if (!s->trailing_md_sent) { |
| // Send trailing md to the other side indicating cancellation |
| s->trailing_md_sent = true; |
| |
| grpc_metadata_batch fake_md; |
| grpc_metadata_batch_init(&fake_md); |
| |
| inproc_stream* other = s->other_side; |
| grpc_metadata_batch* dest = (other == nullptr) |
| ? &s->write_buffer_trailing_md |
| : &other->to_read_trailing_md; |
| bool* destfilled = (other == nullptr) ? &s->write_buffer_trailing_md_filled |
| : &other->to_read_trailing_md_filled; |
| fill_in_metadata(s, &fake_md, 0, dest, nullptr, destfilled); |
| grpc_metadata_batch_destroy(&fake_md); |
| |
| if (other != nullptr) { |
| if (other->cancel_other_error == GRPC_ERROR_NONE) { |
| other->cancel_other_error = GRPC_ERROR_REF(error); |
| } |
| maybe_schedule_op_closure_locked(other, error); |
| } else if (s->write_buffer_cancel_error == GRPC_ERROR_NONE) { |
| s->write_buffer_cancel_error = GRPC_ERROR_REF(error); |
| } |
| } |
| if (s->recv_initial_md_op) { |
| grpc_error* err; |
| if (!s->t->is_client) { |
| // If this is a server, provide initial metadata with a path and authority |
| // since it expects that as well as no error yet |
| grpc_metadata_batch fake_md; |
| grpc_metadata_batch_init(&fake_md); |
| grpc_linked_mdelem* path_md = static_cast<grpc_linked_mdelem*>( |
| gpr_arena_alloc(s->arena, sizeof(*path_md))); |
| path_md->md = grpc_mdelem_from_slices(g_fake_path_key, g_fake_path_value); |
| GPR_ASSERT(grpc_metadata_batch_link_tail(&fake_md, path_md) == |
| GRPC_ERROR_NONE); |
| grpc_linked_mdelem* auth_md = static_cast<grpc_linked_mdelem*>( |
| gpr_arena_alloc(s->arena, sizeof(*auth_md))); |
| auth_md->md = grpc_mdelem_from_slices(g_fake_auth_key, g_fake_auth_value); |
| GPR_ASSERT(grpc_metadata_batch_link_tail(&fake_md, auth_md) == |
| GRPC_ERROR_NONE); |
| |
| fill_in_metadata( |
| s, &fake_md, 0, |
| s->recv_initial_md_op->payload->recv_initial_metadata |
| .recv_initial_metadata, |
| s->recv_initial_md_op->payload->recv_initial_metadata.recv_flags, |
| nullptr); |
| grpc_metadata_batch_destroy(&fake_md); |
| err = GRPC_ERROR_NONE; |
| } else { |
| err = GRPC_ERROR_REF(error); |
| } |
| if (s->recv_initial_md_op->payload->recv_initial_metadata |
| .trailing_metadata_available != nullptr) { |
| // Set to true unconditionally, because we're failing the call, so even |
| // if we haven't actually seen the send_trailing_metadata op from the |
| // other side, we're going to return trailing metadata anyway. |
| *s->recv_initial_md_op->payload->recv_initial_metadata |
| .trailing_metadata_available = true; |
| } |
| INPROC_LOG(GPR_INFO, |
| "fail_helper %p scheduling initial-metadata-ready %p %p", s, |
| error, err); |
| GRPC_CLOSURE_SCHED(s->recv_initial_md_op->payload->recv_initial_metadata |
| .recv_initial_metadata_ready, |
| err); |
| // Last use of err so no need to REF and then UNREF it |
| |
| complete_if_batch_end_locked( |
| s, error, s->recv_initial_md_op, |
| "fail_helper scheduling recv-initial-metadata-on-complete"); |
| s->recv_initial_md_op = nullptr; |
| } |
| if (s->recv_message_op) { |
| INPROC_LOG(GPR_INFO, "fail_helper %p scheduling message-ready %p", s, |
| error); |
| GRPC_CLOSURE_SCHED( |
| s->recv_message_op->payload->recv_message.recv_message_ready, |
| GRPC_ERROR_REF(error)); |
| complete_if_batch_end_locked( |
| s, error, s->recv_message_op, |
| "fail_helper scheduling recv-message-on-complete"); |
| s->recv_message_op = nullptr; |
| } |
| if (s->send_message_op) { |
| s->send_message_op->payload->send_message.send_message.reset(); |
| complete_if_batch_end_locked( |
| s, error, s->send_message_op, |
| "fail_helper scheduling send-message-on-complete"); |
| s->send_message_op = nullptr; |
| } |
| if (s->send_trailing_md_op) { |
| complete_if_batch_end_locked( |
| s, error, s->send_trailing_md_op, |
| "fail_helper scheduling send-trailng-md-on-complete"); |
| s->send_trailing_md_op = nullptr; |
| } |
| if (s->recv_trailing_md_op) { |
| INPROC_LOG(GPR_INFO, "fail_helper %p scheduling trailing-metadata-ready %p", |
| s, error); |
| GRPC_CLOSURE_SCHED(s->recv_trailing_md_op->payload->recv_trailing_metadata |
| .recv_trailing_metadata_ready, |
| GRPC_ERROR_REF(error)); |
| INPROC_LOG(GPR_INFO, "fail_helper %p scheduling trailing-md-on-complete %p", |
| s, error); |
| complete_if_batch_end_locked( |
| s, error, s->recv_trailing_md_op, |
| "fail_helper scheduling recv-trailing-metadata-on-complete"); |
| s->recv_trailing_md_op = nullptr; |
| } |
| close_other_side_locked(s, "fail_helper:other_side"); |
| close_stream_locked(s); |
| |
| GRPC_ERROR_UNREF(error); |
| } |
| |
| // TODO(vjpai): It should not be necessary to drain the incoming byte |
| // stream and create a new one; instead, we should simply pass the byte |
| // stream from the sender directly to the receiver as-is. |
| // |
| // Note that fixing this will also avoid the assumption in this code |
| // that the incoming byte stream's next() call will always return |
| // synchronously. That assumption is true today but may not always be |
| // true in the future. |
| void message_transfer_locked(inproc_stream* sender, inproc_stream* receiver) { |
| size_t remaining = |
| sender->send_message_op->payload->send_message.send_message->length(); |
| if (receiver->recv_inited) { |
| grpc_slice_buffer_destroy_internal(&receiver->recv_message); |
| } |
| grpc_slice_buffer_init(&receiver->recv_message); |
| receiver->recv_inited = true; |
| do { |
| grpc_slice message_slice; |
| grpc_closure unused; |
| GPR_ASSERT( |
| sender->send_message_op->payload->send_message.send_message->Next( |
| SIZE_MAX, &unused)); |
| grpc_error* error = |
| sender->send_message_op->payload->send_message.send_message->Pull( |
| &message_slice); |
| if (error != GRPC_ERROR_NONE) { |
| cancel_stream_locked(sender, GRPC_ERROR_REF(error)); |
| break; |
| } |
| GPR_ASSERT(error == GRPC_ERROR_NONE); |
| remaining -= GRPC_SLICE_LENGTH(message_slice); |
| grpc_slice_buffer_add(&receiver->recv_message, message_slice); |
| } while (remaining > 0); |
| sender->send_message_op->payload->send_message.send_message.reset(); |
| |
| receiver->recv_stream.Init(&receiver->recv_message, 0); |
| receiver->recv_message_op->payload->recv_message.recv_message->reset( |
| receiver->recv_stream.get()); |
| INPROC_LOG(GPR_INFO, "message_transfer_locked %p scheduling message-ready", |
| receiver); |
| GRPC_CLOSURE_SCHED( |
| receiver->recv_message_op->payload->recv_message.recv_message_ready, |
| GRPC_ERROR_NONE); |
| complete_if_batch_end_locked( |
| sender, GRPC_ERROR_NONE, sender->send_message_op, |
| "message_transfer scheduling sender on_complete"); |
| complete_if_batch_end_locked( |
| receiver, GRPC_ERROR_NONE, receiver->recv_message_op, |
| "message_transfer scheduling receiver on_complete"); |
| |
| receiver->recv_message_op = nullptr; |
| sender->send_message_op = nullptr; |
| } |
| |
| void op_state_machine(void* arg, grpc_error* error) { |
| // This function gets called when we have contents in the unprocessed reads |
| // Get what we want based on our ops wanted |
| // Schedule our appropriate closures |
| // and then return to ops_needed state if still needed |
| |
| // Since this is a closure directly invoked by the combiner, it should not |
| // unref the error parameter explicitly; the combiner will do that implicitly |
| grpc_error* new_err = GRPC_ERROR_NONE; |
| |
| bool needs_close = false; |
| |
| INPROC_LOG(GPR_INFO, "op_state_machine %p", arg); |
| inproc_stream* s = static_cast<inproc_stream*>(arg); |
| gpr_mu* mu = &s->t->mu->mu; // keep aside in case s gets closed |
| gpr_mu_lock(mu); |
| s->op_closure_scheduled = false; |
| // cancellation takes precedence |
| inproc_stream* other = s->other_side; |
| |
| if (s->cancel_self_error != GRPC_ERROR_NONE) { |
| fail_helper_locked(s, GRPC_ERROR_REF(s->cancel_self_error)); |
| goto done; |
| } else if (s->cancel_other_error != GRPC_ERROR_NONE) { |
| fail_helper_locked(s, GRPC_ERROR_REF(s->cancel_other_error)); |
| goto done; |
| } else if (error != GRPC_ERROR_NONE) { |
| fail_helper_locked(s, GRPC_ERROR_REF(error)); |
| goto done; |
| } |
| |
| if (s->send_message_op && other) { |
| if (other->recv_message_op) { |
| message_transfer_locked(s, other); |
| maybe_schedule_op_closure_locked(other, GRPC_ERROR_NONE); |
| } else if (!s->t->is_client && s->trailing_md_sent) { |
| // A server send will never be matched if the server already sent status |
| s->send_message_op->payload->send_message.send_message.reset(); |
| complete_if_batch_end_locked( |
| s, GRPC_ERROR_NONE, s->send_message_op, |
| "op_state_machine scheduling send-message-on-complete"); |
| s->send_message_op = nullptr; |
| } |
| } |
| // Pause a send trailing metadata if there is still an outstanding |
| // send message unless we know that the send message will never get |
| // matched to a receive. This happens on the client if the server has |
| // already sent status or on the server if the client has requested |
| // status |
| if (s->send_trailing_md_op && |
| (!s->send_message_op || |
| (s->t->is_client && |
| (s->trailing_md_recvd || s->to_read_trailing_md_filled)) || |
| (!s->t->is_client && other && |
| (other->trailing_md_recvd || other->to_read_trailing_md_filled || |
| other->recv_trailing_md_op)))) { |
| grpc_metadata_batch* dest = (other == nullptr) |
| ? &s->write_buffer_trailing_md |
| : &other->to_read_trailing_md; |
| bool* destfilled = (other == nullptr) ? &s->write_buffer_trailing_md_filled |
| : &other->to_read_trailing_md_filled; |
| if (*destfilled || s->trailing_md_sent) { |
| // The buffer is already in use; that's an error! |
| INPROC_LOG(GPR_INFO, "Extra trailing metadata %p", s); |
| new_err = GRPC_ERROR_CREATE_FROM_STATIC_STRING("Extra trailing metadata"); |
| fail_helper_locked(s, GRPC_ERROR_REF(new_err)); |
| goto done; |
| } else { |
| if (!other || !other->closed) { |
| fill_in_metadata(s, |
| s->send_trailing_md_op->payload->send_trailing_metadata |
| .send_trailing_metadata, |
| 0, dest, nullptr, destfilled); |
| } |
| s->trailing_md_sent = true; |
| if (!s->t->is_client && s->trailing_md_recvd && s->recv_trailing_md_op) { |
| INPROC_LOG(GPR_INFO, |
| "op_state_machine %p scheduling trailing-metadata-ready", s); |
| GRPC_CLOSURE_SCHED( |
| s->recv_trailing_md_op->payload->recv_trailing_metadata |
| .recv_trailing_metadata_ready, |
| GRPC_ERROR_NONE); |
| INPROC_LOG(GPR_INFO, |
| "op_state_machine %p scheduling trailing-md-on-complete", s); |
| GRPC_CLOSURE_SCHED(s->recv_trailing_md_op->on_complete, |
| GRPC_ERROR_NONE); |
| s->recv_trailing_md_op = nullptr; |
| needs_close = true; |
| } |
| } |
| maybe_schedule_op_closure_locked(other, GRPC_ERROR_NONE); |
| complete_if_batch_end_locked( |
| s, GRPC_ERROR_NONE, s->send_trailing_md_op, |
| "op_state_machine scheduling send-trailing-metadata-on-complete"); |
| s->send_trailing_md_op = nullptr; |
| } |
| if (s->recv_initial_md_op) { |
| if (s->initial_md_recvd) { |
| new_err = |
| GRPC_ERROR_CREATE_FROM_STATIC_STRING("Already recvd initial md"); |
| INPROC_LOG( |
| GPR_INFO, |
| "op_state_machine %p scheduling on_complete errors for already " |
| "recvd initial md %p", |
| s, new_err); |
| fail_helper_locked(s, GRPC_ERROR_REF(new_err)); |
| goto done; |
| } |
| |
| if (s->to_read_initial_md_filled) { |
| s->initial_md_recvd = true; |
| new_err = fill_in_metadata( |
| s, &s->to_read_initial_md, s->to_read_initial_md_flags, |
| s->recv_initial_md_op->payload->recv_initial_metadata |
| .recv_initial_metadata, |
| s->recv_initial_md_op->payload->recv_initial_metadata.recv_flags, |
| nullptr); |
| s->recv_initial_md_op->payload->recv_initial_metadata |
| .recv_initial_metadata->deadline = s->deadline; |
| if (s->recv_initial_md_op->payload->recv_initial_metadata |
| .trailing_metadata_available != nullptr) { |
| *s->recv_initial_md_op->payload->recv_initial_metadata |
| .trailing_metadata_available = |
| (other != nullptr && other->send_trailing_md_op != nullptr); |
| } |
| grpc_metadata_batch_clear(&s->to_read_initial_md); |
| s->to_read_initial_md_filled = false; |
| INPROC_LOG(GPR_INFO, |
| "op_state_machine %p scheduling initial-metadata-ready %p", s, |
| new_err); |
| GRPC_CLOSURE_SCHED(s->recv_initial_md_op->payload->recv_initial_metadata |
| .recv_initial_metadata_ready, |
| GRPC_ERROR_REF(new_err)); |
| complete_if_batch_end_locked( |
| s, new_err, s->recv_initial_md_op, |
| "op_state_machine scheduling recv-initial-metadata-on-complete"); |
| s->recv_initial_md_op = nullptr; |
| |
| if (new_err != GRPC_ERROR_NONE) { |
| INPROC_LOG(GPR_INFO, |
| "op_state_machine %p scheduling on_complete errors2 %p", s, |
| new_err); |
| fail_helper_locked(s, GRPC_ERROR_REF(new_err)); |
| goto done; |
| } |
| } |
| } |
| if (s->recv_message_op) { |
| if (other && other->send_message_op) { |
| message_transfer_locked(other, s); |
| maybe_schedule_op_closure_locked(other, GRPC_ERROR_NONE); |
| } |
| } |
| if (s->to_read_trailing_md_filled) { |
| if (s->trailing_md_recvd) { |
| new_err = |
| GRPC_ERROR_CREATE_FROM_STATIC_STRING("Already recvd trailing md"); |
| INPROC_LOG( |
| GPR_INFO, |
| "op_state_machine %p scheduling on_complete errors for already " |
| "recvd trailing md %p", |
| s, new_err); |
| fail_helper_locked(s, GRPC_ERROR_REF(new_err)); |
| goto done; |
| } |
| if (s->recv_message_op != nullptr) { |
| // This message needs to be wrapped up because it will never be |
| // satisfied |
| *s->recv_message_op->payload->recv_message.recv_message = nullptr; |
| INPROC_LOG(GPR_INFO, "op_state_machine %p scheduling message-ready", s); |
| GRPC_CLOSURE_SCHED( |
| s->recv_message_op->payload->recv_message.recv_message_ready, |
| GRPC_ERROR_NONE); |
| complete_if_batch_end_locked( |
| s, new_err, s->recv_message_op, |
| "op_state_machine scheduling recv-message-on-complete"); |
| s->recv_message_op = nullptr; |
| } |
| if ((s->trailing_md_sent || s->t->is_client) && s->send_message_op) { |
| // Nothing further will try to receive from this stream, so finish off |
| // any outstanding send_message op |
| s->send_message_op->payload->send_message.send_message.reset(); |
| complete_if_batch_end_locked( |
| s, new_err, s->send_message_op, |
| "op_state_machine scheduling send-message-on-complete"); |
| s->send_message_op = nullptr; |
| } |
| if (s->recv_trailing_md_op != nullptr) { |
| // We wanted trailing metadata and we got it |
| s->trailing_md_recvd = true; |
| new_err = |
| fill_in_metadata(s, &s->to_read_trailing_md, 0, |
| s->recv_trailing_md_op->payload |
| ->recv_trailing_metadata.recv_trailing_metadata, |
| nullptr, nullptr); |
| grpc_metadata_batch_clear(&s->to_read_trailing_md); |
| s->to_read_trailing_md_filled = false; |
| |
| // We should schedule the recv_trailing_md_op completion if |
| // 1. this stream is the client-side |
| // 2. this stream is the server-side AND has already sent its trailing md |
| // (If the server hasn't already sent its trailing md, it doesn't have |
| // a final status, so don't mark this op complete) |
| if (s->t->is_client || s->trailing_md_sent) { |
| INPROC_LOG(GPR_INFO, |
| "op_state_machine %p scheduling trailing-md-on-complete %p", |
| s, new_err); |
| GRPC_CLOSURE_SCHED( |
| s->recv_trailing_md_op->payload->recv_trailing_metadata |
| .recv_trailing_metadata_ready, |
| GRPC_ERROR_REF(new_err)); |
| GRPC_CLOSURE_SCHED(s->recv_trailing_md_op->on_complete, |
| GRPC_ERROR_REF(new_err)); |
| s->recv_trailing_md_op = nullptr; |
| needs_close = true; |
| } else { |
| INPROC_LOG(GPR_INFO, |
| "op_state_machine %p server needs to delay handling " |
| "trailing-md-on-complete %p", |
| s, new_err); |
| } |
| } else { |
| INPROC_LOG( |
| GPR_INFO, |
| "op_state_machine %p has trailing md but not yet waiting for it", s); |
| } |
| } |
| if (s->trailing_md_recvd && s->recv_message_op) { |
| // No further message will come on this stream, so finish off the |
| // recv_message_op |
| INPROC_LOG(GPR_INFO, "op_state_machine %p scheduling message-ready", s); |
| *s->recv_message_op->payload->recv_message.recv_message = nullptr; |
| GRPC_CLOSURE_SCHED( |
| s->recv_message_op->payload->recv_message.recv_message_ready, |
| GRPC_ERROR_NONE); |
| complete_if_batch_end_locked( |
| s, new_err, s->recv_message_op, |
| "op_state_machine scheduling recv-message-on-complete"); |
| s->recv_message_op = nullptr; |
| } |
| if (s->trailing_md_recvd && (s->trailing_md_sent || s->t->is_client) && |
| s->send_message_op) { |
| // Nothing further will try to receive from this stream, so finish off |
| // any outstanding send_message op |
| s->send_message_op->payload->send_message.send_message.reset(); |
| complete_if_batch_end_locked( |
| s, new_err, s->send_message_op, |
| "op_state_machine scheduling send-message-on-complete"); |
| s->send_message_op = nullptr; |
| } |
| if (s->send_message_op || s->send_trailing_md_op || s->recv_initial_md_op || |
| s->recv_message_op || s->recv_trailing_md_op) { |
| // Didn't get the item we wanted so we still need to get |
| // rescheduled |
| INPROC_LOG( |
| GPR_INFO, "op_state_machine %p still needs closure %p %p %p %p %p", s, |
| s->send_message_op, s->send_trailing_md_op, s->recv_initial_md_op, |
| s->recv_message_op, s->recv_trailing_md_op); |
| s->ops_needed = true; |
| } |
| done: |
| if (needs_close) { |
| close_other_side_locked(s, "op_state_machine"); |
| close_stream_locked(s); |
| } |
| gpr_mu_unlock(mu); |
| GRPC_ERROR_UNREF(new_err); |
| } |
| |
| bool cancel_stream_locked(inproc_stream* s, grpc_error* error) { |
| bool ret = false; // was the cancel accepted |
| INPROC_LOG(GPR_INFO, "cancel_stream %p with %s", s, grpc_error_string(error)); |
| if (s->cancel_self_error == GRPC_ERROR_NONE) { |
| ret = true; |
| s->cancel_self_error = GRPC_ERROR_REF(error); |
| maybe_schedule_op_closure_locked(s, s->cancel_self_error); |
| // Send trailing md to the other side indicating cancellation, even if we |
| // already have |
| s->trailing_md_sent = true; |
| |
| grpc_metadata_batch cancel_md; |
| grpc_metadata_batch_init(&cancel_md); |
| |
| inproc_stream* other = s->other_side; |
| grpc_metadata_batch* dest = (other == nullptr) |
| ? &s->write_buffer_trailing_md |
| : &other->to_read_trailing_md; |
| bool* destfilled = (other == nullptr) ? &s->write_buffer_trailing_md_filled |
| : &other->to_read_trailing_md_filled; |
| fill_in_metadata(s, &cancel_md, 0, dest, nullptr, destfilled); |
| grpc_metadata_batch_destroy(&cancel_md); |
| |
| if (other != nullptr) { |
| if (other->cancel_other_error == GRPC_ERROR_NONE) { |
| other->cancel_other_error = GRPC_ERROR_REF(s->cancel_self_error); |
| } |
| maybe_schedule_op_closure_locked(other, other->cancel_other_error); |
| } else if (s->write_buffer_cancel_error == GRPC_ERROR_NONE) { |
| s->write_buffer_cancel_error = GRPC_ERROR_REF(s->cancel_self_error); |
| } |
| |
| // if we are a server and already received trailing md but |
| // couldn't complete that because we hadn't yet sent out trailing |
| // md, now's the chance |
| if (!s->t->is_client && s->trailing_md_recvd && s->recv_trailing_md_op) { |
| GRPC_CLOSURE_SCHED(s->recv_trailing_md_op->payload->recv_trailing_metadata |
| .recv_trailing_metadata_ready, |
| GRPC_ERROR_REF(s->cancel_self_error)); |
| complete_if_batch_end_locked( |
| s, s->cancel_self_error, s->recv_trailing_md_op, |
| "cancel_stream scheduling trailing-md-on-complete"); |
| s->recv_trailing_md_op = nullptr; |
| } |
| } |
| |
| close_other_side_locked(s, "cancel_stream:other_side"); |
| close_stream_locked(s); |
| |
| GRPC_ERROR_UNREF(error); |
| return ret; |
| } |
| |
| void do_nothing(void* arg, grpc_error* error) {} |
| |
| void perform_stream_op(grpc_transport* gt, grpc_stream* gs, |
| grpc_transport_stream_op_batch* op) { |
| INPROC_LOG(GPR_INFO, "perform_stream_op %p %p %p", gt, gs, op); |
| inproc_stream* s = reinterpret_cast<inproc_stream*>(gs); |
| gpr_mu* mu = &s->t->mu->mu; // save aside in case s gets closed |
| gpr_mu_lock(mu); |
| |
| if (grpc_inproc_trace.enabled()) { |
| if (op->send_initial_metadata) { |
| log_metadata(op->payload->send_initial_metadata.send_initial_metadata, |
| s->t->is_client, true); |
| } |
| if (op->send_trailing_metadata) { |
| log_metadata(op->payload->send_trailing_metadata.send_trailing_metadata, |
| s->t->is_client, false); |
| } |
| } |
| grpc_error* error = GRPC_ERROR_NONE; |
| grpc_closure* on_complete = op->on_complete; |
| // TODO(roth): This is a hack needed because we use data inside of the |
| // closure itself to do the barrier calculation (i.e., to ensure that |
| // we don't schedule the closure until all ops in the batch have been |
| // completed). This can go away once we move to a new C++ closure API |
| // that provides the ability to create a barrier closure. |
| if (on_complete == nullptr) { |
| on_complete = GRPC_CLOSURE_INIT(&op->handler_private.closure, do_nothing, |
| nullptr, grpc_schedule_on_exec_ctx); |
| } |
| |
| if (op->cancel_stream) { |
| // Call cancel_stream_locked without ref'ing the cancel_error because |
| // this function is responsible to make sure that that field gets unref'ed |
| cancel_stream_locked(s, op->payload->cancel_stream.cancel_error); |
| // this op can complete without an error |
| } else if (s->cancel_self_error != GRPC_ERROR_NONE) { |
| // already self-canceled so still give it an error |
| error = GRPC_ERROR_REF(s->cancel_self_error); |
| } else { |
| INPROC_LOG(GPR_INFO, "perform_stream_op %p %s%s%s%s%s%s%s", s, |
| s->t->is_client ? "client" : "server", |
| op->send_initial_metadata ? " send_initial_metadata" : "", |
| op->send_message ? " send_message" : "", |
| op->send_trailing_metadata ? " send_trailing_metadata" : "", |
| op->recv_initial_metadata ? " recv_initial_metadata" : "", |
| op->recv_message ? " recv_message" : "", |
| op->recv_trailing_metadata ? " recv_trailing_metadata" : ""); |
| } |
| |
| bool needs_close = false; |
| |
| inproc_stream* other = s->other_side; |
| if (error == GRPC_ERROR_NONE && |
| (op->send_initial_metadata || op->send_trailing_metadata)) { |
| if (s->t->is_closed) { |
| error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("Endpoint already shutdown"); |
| } |
| if (error == GRPC_ERROR_NONE && op->send_initial_metadata) { |
| grpc_metadata_batch* dest = (other == nullptr) |
| ? &s->write_buffer_initial_md |
| : &other->to_read_initial_md; |
| uint32_t* destflags = (other == nullptr) |
| ? &s->write_buffer_initial_md_flags |
| : &other->to_read_initial_md_flags; |
| bool* destfilled = (other == nullptr) ? &s->write_buffer_initial_md_filled |
| : &other->to_read_initial_md_filled; |
| if (*destfilled || s->initial_md_sent) { |
| // The buffer is already in use; that's an error! |
| INPROC_LOG(GPR_INFO, "Extra initial metadata %p", s); |
| error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("Extra initial metadata"); |
| } else { |
| if (!other || !other->closed) { |
| fill_in_metadata( |
| s, op->payload->send_initial_metadata.send_initial_metadata, |
| op->payload->send_initial_metadata.send_initial_metadata_flags, |
| dest, destflags, destfilled); |
| } |
| if (s->t->is_client) { |
| grpc_millis* dl = |
| (other == nullptr) ? &s->write_buffer_deadline : &other->deadline; |
| *dl = GPR_MIN(*dl, op->payload->send_initial_metadata |
| .send_initial_metadata->deadline); |
| s->initial_md_sent = true; |
| } |
| } |
| maybe_schedule_op_closure_locked(other, error); |
| } |
| } |
| |
| if (error == GRPC_ERROR_NONE && |
| (op->send_message || op->send_trailing_metadata || |
| op->recv_initial_metadata || op->recv_message || |
| op->recv_trailing_metadata)) { |
| // Mark ops that need to be processed by the closure |
| if (op->send_message) { |
| s->send_message_op = op; |
| } |
| if (op->send_trailing_metadata) { |
| s->send_trailing_md_op = op; |
| } |
| if (op->recv_initial_metadata) { |
| s->recv_initial_md_op = op; |
| } |
| if (op->recv_message) { |
| s->recv_message_op = op; |
| } |
| if (op->recv_trailing_metadata) { |
| s->recv_trailing_md_op = op; |
| } |
| |
| // We want to initiate the closure if: |
| // 1. We want to send a message and the other side wants to receive |
| // 2. We want to send trailing metadata and there isn't an unmatched send |
| // or the other side wants trailing metadata |
| // 3. We want initial metadata and the other side has sent it |
| // 4. We want to receive a message and there is a message ready |
| // 5. There is trailing metadata, even if nothing specifically wants |
| // that because that can shut down the receive message as well |
| if ((op->send_message && other && other->recv_message_op != nullptr) || |
| (op->send_trailing_metadata && |
| (!s->send_message_op || (other && other->recv_trailing_md_op))) || |
| (op->recv_initial_metadata && s->to_read_initial_md_filled) || |
| (op->recv_message && other && other->send_message_op != nullptr) || |
| (s->to_read_trailing_md_filled || s->trailing_md_recvd)) { |
| if (!s->op_closure_scheduled) { |
| GRPC_CLOSURE_SCHED(&s->op_closure, GRPC_ERROR_NONE); |
| s->op_closure_scheduled = true; |
| } |
| } else { |
| s->ops_needed = true; |
| } |
| } else { |
| if (error != GRPC_ERROR_NONE) { |
| // Schedule op's closures that we didn't push to op state machine |
| if (op->recv_initial_metadata) { |
| if (op->payload->recv_initial_metadata.trailing_metadata_available != |
| nullptr) { |
| // Set to true unconditionally, because we're failing the call, so |
| // even if we haven't actually seen the send_trailing_metadata op |
| // from the other side, we're going to return trailing metadata |
| // anyway. |
| *op->payload->recv_initial_metadata.trailing_metadata_available = |
| true; |
| } |
| INPROC_LOG( |
| GPR_INFO, |
| "perform_stream_op error %p scheduling initial-metadata-ready %p", |
| s, error); |
| GRPC_CLOSURE_SCHED( |
| op->payload->recv_initial_metadata.recv_initial_metadata_ready, |
| GRPC_ERROR_REF(error)); |
| } |
| if (op->recv_message) { |
| INPROC_LOG( |
| GPR_INFO, |
| "perform_stream_op error %p scheduling recv message-ready %p", s, |
| error); |
| GRPC_CLOSURE_SCHED(op->payload->recv_message.recv_message_ready, |
| GRPC_ERROR_REF(error)); |
| } |
| if (op->recv_trailing_metadata) { |
| INPROC_LOG( |
| GPR_INFO, |
| "perform_stream_op error %p scheduling trailing-metadata-ready %p", |
| s, error); |
| GRPC_CLOSURE_SCHED( |
| op->payload->recv_trailing_metadata.recv_trailing_metadata_ready, |
| GRPC_ERROR_REF(error)); |
| } |
| } |
| INPROC_LOG(GPR_INFO, "perform_stream_op %p scheduling on_complete %p", s, |
| error); |
| GRPC_CLOSURE_SCHED(on_complete, GRPC_ERROR_REF(error)); |
| } |
| if (needs_close) { |
| close_other_side_locked(s, "perform_stream_op:other_side"); |
| close_stream_locked(s); |
| } |
| gpr_mu_unlock(mu); |
| GRPC_ERROR_UNREF(error); |
| } |
| |
| void close_transport_locked(inproc_transport* t) { |
| INPROC_LOG(GPR_INFO, "close_transport %p %d", t, t->is_closed); |
| grpc_connectivity_state_set( |
| &t->connectivity, GRPC_CHANNEL_SHUTDOWN, |
| GRPC_ERROR_CREATE_FROM_STATIC_STRING("Closing transport."), |
| "close transport"); |
| if (!t->is_closed) { |
| t->is_closed = true; |
| /* Also end all streams on this transport */ |
| while (t->stream_list != nullptr) { |
| // cancel_stream_locked also adjusts stream list |
| cancel_stream_locked( |
| t->stream_list, |
| grpc_error_set_int( |
| GRPC_ERROR_CREATE_FROM_STATIC_STRING("Transport closed"), |
| GRPC_ERROR_INT_GRPC_STATUS, GRPC_STATUS_UNAVAILABLE)); |
| } |
| } |
| } |
| |
| void perform_transport_op(grpc_transport* gt, grpc_transport_op* op) { |
| inproc_transport* t = reinterpret_cast<inproc_transport*>(gt); |
| INPROC_LOG(GPR_INFO, "perform_transport_op %p %p", t, op); |
| gpr_mu_lock(&t->mu->mu); |
| if (op->on_connectivity_state_change) { |
| grpc_connectivity_state_notify_on_state_change( |
| &t->connectivity, op->connectivity_state, |
| op->on_connectivity_state_change); |
| } |
| if (op->set_accept_stream) { |
| t->accept_stream_cb = op->set_accept_stream_fn; |
| t->accept_stream_data = op->set_accept_stream_user_data; |
| } |
| if (op->on_consumed) { |
| GRPC_CLOSURE_SCHED(op->on_consumed, GRPC_ERROR_NONE); |
| } |
| |
| bool do_close = false; |
| if (op->goaway_error != GRPC_ERROR_NONE) { |
| do_close = true; |
| GRPC_ERROR_UNREF(op->goaway_error); |
| } |
| if (op->disconnect_with_error != GRPC_ERROR_NONE) { |
| do_close = true; |
| GRPC_ERROR_UNREF(op->disconnect_with_error); |
| } |
| |
| if (do_close) { |
| close_transport_locked(t); |
| } |
| gpr_mu_unlock(&t->mu->mu); |
| } |
| |
| void destroy_stream(grpc_transport* gt, grpc_stream* gs, |
| grpc_closure* then_schedule_closure) { |
| INPROC_LOG(GPR_INFO, "destroy_stream %p %p", gs, then_schedule_closure); |
| inproc_stream* s = reinterpret_cast<inproc_stream*>(gs); |
| s->closure_at_destroy = then_schedule_closure; |
| s->~inproc_stream(); |
| } |
| |
| void destroy_transport(grpc_transport* gt) { |
| inproc_transport* t = reinterpret_cast<inproc_transport*>(gt); |
| INPROC_LOG(GPR_INFO, "destroy_transport %p", t); |
| gpr_mu_lock(&t->mu->mu); |
| close_transport_locked(t); |
| gpr_mu_unlock(&t->mu->mu); |
| t->other_side->unref(); |
| t->unref(); |
| } |
| |
| /******************************************************************************* |
| * INTEGRATION GLUE |
| */ |
| |
| void set_pollset(grpc_transport* gt, grpc_stream* gs, grpc_pollset* pollset) { |
| // Nothing to do here |
| } |
| |
| void set_pollset_set(grpc_transport* gt, grpc_stream* gs, |
| grpc_pollset_set* pollset_set) { |
| // Nothing to do here |
| } |
| |
| grpc_endpoint* get_endpoint(grpc_transport* t) { return nullptr; } |
| |
| const grpc_transport_vtable inproc_vtable = { |
| sizeof(inproc_stream), "inproc", init_stream, |
| set_pollset, set_pollset_set, perform_stream_op, |
| perform_transport_op, destroy_stream, destroy_transport, |
| get_endpoint}; |
| |
| /******************************************************************************* |
| * Main inproc transport functions |
| */ |
| void inproc_transports_create(grpc_transport** server_transport, |
| const grpc_channel_args* server_args, |
| grpc_transport** client_transport, |
| const grpc_channel_args* client_args) { |
| INPROC_LOG(GPR_INFO, "inproc_transports_create"); |
| shared_mu* mu = new (gpr_malloc(sizeof(*mu))) shared_mu(); |
| inproc_transport* st = new (gpr_malloc(sizeof(*st))) |
| inproc_transport(&inproc_vtable, mu, /*is_client=*/false); |
| inproc_transport* ct = new (gpr_malloc(sizeof(*ct))) |
| inproc_transport(&inproc_vtable, mu, /*is_client=*/true); |
| st->other_side = ct; |
| ct->other_side = st; |
| *server_transport = reinterpret_cast<grpc_transport*>(st); |
| *client_transport = reinterpret_cast<grpc_transport*>(ct); |
| } |
| } // namespace |
| |
| /******************************************************************************* |
| * GLOBAL INIT AND DESTROY |
| */ |
| void grpc_inproc_transport_init(void) { |
| grpc_core::ExecCtx exec_ctx; |
| g_empty_slice = grpc_slice_from_static_buffer(nullptr, 0); |
| |
| grpc_slice key_tmp = grpc_slice_from_static_string(":path"); |
| g_fake_path_key = grpc_slice_intern(key_tmp); |
| grpc_slice_unref_internal(key_tmp); |
| |
| g_fake_path_value = grpc_slice_from_static_string("/"); |
| |
| grpc_slice auth_tmp = grpc_slice_from_static_string(":authority"); |
| g_fake_auth_key = grpc_slice_intern(auth_tmp); |
| grpc_slice_unref_internal(auth_tmp); |
| |
| g_fake_auth_value = grpc_slice_from_static_string("inproc-fail"); |
| } |
| |
| grpc_channel* grpc_inproc_channel_create(grpc_server* server, |
| grpc_channel_args* args, |
| void* reserved) { |
| GRPC_API_TRACE("grpc_inproc_channel_create(server=%p, args=%p)", 2, |
| (server, args)); |
| |
| grpc_core::ExecCtx exec_ctx; |
| |
| const grpc_channel_args* server_args = grpc_server_get_channel_args(server); |
| |
| // Add a default authority channel argument for the client |
| |
| grpc_arg default_authority_arg; |
| default_authority_arg.type = GRPC_ARG_STRING; |
| default_authority_arg.key = (char*)GRPC_ARG_DEFAULT_AUTHORITY; |
| default_authority_arg.value.string = (char*)"inproc.authority"; |
| grpc_channel_args* client_args = |
| grpc_channel_args_copy_and_add(args, &default_authority_arg, 1); |
| |
| grpc_transport* server_transport; |
| grpc_transport* client_transport; |
| inproc_transports_create(&server_transport, server_args, &client_transport, |
| client_args); |
| |
| // TODO(ncteisen): design and support channelz GetSocket for inproc. |
| grpc_server_setup_transport(server, server_transport, nullptr, server_args, |
| nullptr); |
| grpc_channel* channel = grpc_channel_create( |
| "inproc", client_args, GRPC_CLIENT_DIRECT_CHANNEL, client_transport); |
| |
| // Free up created channel args |
| grpc_channel_args_destroy(client_args); |
| |
| // Now finish scheduled operations |
| |
| return channel; |
| } |
| |
| void grpc_inproc_transport_shutdown(void) { |
| grpc_core::ExecCtx exec_ctx; |
| grpc_slice_unref_internal(g_empty_slice); |
| grpc_slice_unref_internal(g_fake_path_key); |
| grpc_slice_unref_internal(g_fake_path_value); |
| grpc_slice_unref_internal(g_fake_auth_key); |
| grpc_slice_unref_internal(g_fake_auth_value); |
| } |