| /* |
| * |
| * Copyright 2016 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. |
| * |
| */ |
| |
| /* With the addition of a libuv endpoint, sockaddr.h now includes uv.h when |
| using that endpoint. Because of various transitive includes in uv.h, |
| including windows.h on Windows, uv.h must be included before other system |
| headers. Therefore, sockaddr.h must always be included first */ |
| #include "src/core/lib/iomgr/sockaddr.h" |
| |
| #include "test/core/util/passthru_endpoint.h" |
| |
| #include <inttypes.h> |
| #include <string.h> |
| |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/string_util.h> |
| #include "src/core/lib/iomgr/sockaddr.h" |
| |
| #include "src/core/lib/slice/slice_internal.h" |
| |
| typedef struct passthru_endpoint passthru_endpoint; |
| |
| typedef struct { |
| grpc_endpoint base; |
| passthru_endpoint* parent; |
| grpc_slice_buffer read_buffer; |
| grpc_slice_buffer* on_read_out; |
| grpc_closure* on_read; |
| grpc_resource_user* resource_user; |
| } half; |
| |
| struct passthru_endpoint { |
| gpr_mu mu; |
| int halves; |
| grpc_passthru_endpoint_stats* stats; |
| grpc_passthru_endpoint_stats |
| dummy_stats; // used if constructor stats == NULL |
| bool shutdown; |
| half client; |
| half server; |
| }; |
| |
| static void me_read(grpc_exec_ctx* exec_ctx, grpc_endpoint* ep, |
| grpc_slice_buffer* slices, grpc_closure* cb) { |
| half* m = (half*)ep; |
| gpr_mu_lock(&m->parent->mu); |
| if (m->parent->shutdown) { |
| GRPC_CLOSURE_SCHED( |
| exec_ctx, cb, GRPC_ERROR_CREATE_FROM_STATIC_STRING("Already shutdown")); |
| } else if (m->read_buffer.count > 0) { |
| grpc_slice_buffer_swap(&m->read_buffer, slices); |
| GRPC_CLOSURE_SCHED(exec_ctx, cb, GRPC_ERROR_NONE); |
| } else { |
| m->on_read = cb; |
| m->on_read_out = slices; |
| } |
| gpr_mu_unlock(&m->parent->mu); |
| } |
| |
| static half* other_half(half* h) { |
| if (h == &h->parent->client) return &h->parent->server; |
| return &h->parent->client; |
| } |
| |
| static void me_write(grpc_exec_ctx* exec_ctx, grpc_endpoint* ep, |
| grpc_slice_buffer* slices, grpc_closure* cb) { |
| half* m = other_half((half*)ep); |
| gpr_mu_lock(&m->parent->mu); |
| grpc_error* error = GRPC_ERROR_NONE; |
| gpr_atm_no_barrier_fetch_add(&m->parent->stats->num_writes, (gpr_atm)1); |
| if (m->parent->shutdown) { |
| error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("Endpoint already shutdown"); |
| } else if (m->on_read != nullptr) { |
| for (size_t i = 0; i < slices->count; i++) { |
| grpc_slice_buffer_add(m->on_read_out, grpc_slice_copy(slices->slices[i])); |
| } |
| GRPC_CLOSURE_SCHED(exec_ctx, m->on_read, GRPC_ERROR_NONE); |
| m->on_read = nullptr; |
| } else { |
| for (size_t i = 0; i < slices->count; i++) { |
| grpc_slice_buffer_add(&m->read_buffer, |
| grpc_slice_copy(slices->slices[i])); |
| } |
| } |
| gpr_mu_unlock(&m->parent->mu); |
| GRPC_CLOSURE_SCHED(exec_ctx, cb, error); |
| } |
| |
| static void me_add_to_pollset(grpc_exec_ctx* exec_ctx, grpc_endpoint* ep, |
| grpc_pollset* pollset) {} |
| |
| static void me_add_to_pollset_set(grpc_exec_ctx* exec_ctx, grpc_endpoint* ep, |
| grpc_pollset_set* pollset) {} |
| |
| static void me_delete_from_pollset_set(grpc_exec_ctx* exec_ctx, |
| grpc_endpoint* ep, |
| grpc_pollset_set* pollset) {} |
| |
| static void me_shutdown(grpc_exec_ctx* exec_ctx, grpc_endpoint* ep, |
| grpc_error* why) { |
| half* m = (half*)ep; |
| gpr_mu_lock(&m->parent->mu); |
| m->parent->shutdown = true; |
| if (m->on_read) { |
| GRPC_CLOSURE_SCHED( |
| exec_ctx, m->on_read, |
| GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING("Shutdown", &why, 1)); |
| m->on_read = nullptr; |
| } |
| m = other_half(m); |
| if (m->on_read) { |
| GRPC_CLOSURE_SCHED( |
| exec_ctx, m->on_read, |
| GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING("Shutdown", &why, 1)); |
| m->on_read = nullptr; |
| } |
| gpr_mu_unlock(&m->parent->mu); |
| grpc_resource_user_shutdown(exec_ctx, m->resource_user); |
| GRPC_ERROR_UNREF(why); |
| } |
| |
| static void me_destroy(grpc_exec_ctx* exec_ctx, grpc_endpoint* ep) { |
| passthru_endpoint* p = ((half*)ep)->parent; |
| gpr_mu_lock(&p->mu); |
| if (0 == --p->halves) { |
| gpr_mu_unlock(&p->mu); |
| gpr_mu_destroy(&p->mu); |
| grpc_slice_buffer_destroy_internal(exec_ctx, &p->client.read_buffer); |
| grpc_slice_buffer_destroy_internal(exec_ctx, &p->server.read_buffer); |
| grpc_resource_user_unref(exec_ctx, p->client.resource_user); |
| grpc_resource_user_unref(exec_ctx, p->server.resource_user); |
| gpr_free(p); |
| } else { |
| gpr_mu_unlock(&p->mu); |
| } |
| } |
| |
| static char* me_get_peer(grpc_endpoint* ep) { |
| passthru_endpoint* p = ((half*)ep)->parent; |
| return ((half*)ep) == &p->client ? gpr_strdup("fake:mock_client_endpoint") |
| : gpr_strdup("fake:mock_server_endpoint"); |
| } |
| |
| static int me_get_fd(grpc_endpoint* ep) { return -1; } |
| |
| static grpc_resource_user* me_get_resource_user(grpc_endpoint* ep) { |
| half* m = (half*)ep; |
| return m->resource_user; |
| } |
| |
| static const grpc_endpoint_vtable vtable = { |
| me_read, |
| me_write, |
| me_add_to_pollset, |
| me_add_to_pollset_set, |
| me_delete_from_pollset_set, |
| me_shutdown, |
| me_destroy, |
| me_get_resource_user, |
| me_get_peer, |
| me_get_fd, |
| }; |
| |
| static void half_init(half* m, passthru_endpoint* parent, |
| grpc_resource_quota* resource_quota, |
| const char* half_name) { |
| m->base.vtable = &vtable; |
| m->parent = parent; |
| grpc_slice_buffer_init(&m->read_buffer); |
| m->on_read = nullptr; |
| char* name; |
| gpr_asprintf(&name, "passthru_endpoint_%s_%" PRIxPTR, half_name, |
| (intptr_t)parent); |
| m->resource_user = grpc_resource_user_create(resource_quota, name); |
| gpr_free(name); |
| } |
| |
| void grpc_passthru_endpoint_create(grpc_endpoint** client, |
| grpc_endpoint** server, |
| grpc_resource_quota* resource_quota, |
| grpc_passthru_endpoint_stats* stats) { |
| passthru_endpoint* m = (passthru_endpoint*)gpr_malloc(sizeof(*m)); |
| m->halves = 2; |
| m->shutdown = 0; |
| m->stats = stats == nullptr ? &m->dummy_stats : stats; |
| memset(m->stats, 0, sizeof(*m->stats)); |
| half_init(&m->client, m, resource_quota, "client"); |
| half_init(&m->server, m, resource_quota, "server"); |
| gpr_mu_init(&m->mu); |
| *client = &m->client.base; |
| *server = &m->server.base; |
| } |