1 /* 2 * 3 * Copyright 2017 gRPC authors. 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 */ 18 19 #include <grpc/support/port_platform.h> 20 21 #include "src/core/lib/surface/completion_queue.h" 22 #include "src/core/lib/surface/completion_queue_factory.h" 23 24 #include <grpc/support/log.h> 25 26 /* 27 * == Default completion queue factory implementation == 28 */ 29 30 static grpc_completion_queue* default_create( 31 const grpc_completion_queue_factory* factory, 32 const grpc_completion_queue_attributes* attr) { 33 return grpc_completion_queue_create_internal( 34 attr->cq_completion_type, attr->cq_polling_type, attr->cq_shutdown_cb); 35 } 36 37 static grpc_completion_queue_factory_vtable default_vtable = {default_create}; 38 39 static const grpc_completion_queue_factory g_default_cq_factory = { 40 "Default Factory", nullptr, &default_vtable}; 41 42 /* 43 * == Completion queue factory APIs 44 */ 45 46 const grpc_completion_queue_factory* grpc_completion_queue_factory_lookup( 47 const grpc_completion_queue_attributes* attributes) { 48 GPR_ASSERT(attributes->version >= 1 && 49 attributes->version <= GRPC_CQ_CURRENT_VERSION); 50 51 /* The default factory can handle version 1 of the attributes structure. We 52 may have to change this as more fields are added to the structure */ 53 return &g_default_cq_factory; 54 } 55 56 /* 57 * == Completion queue creation APIs == 58 */ 59 60 grpc_completion_queue* grpc_completion_queue_create_for_next(void* reserved) { 61 GPR_ASSERT(!reserved); 62 grpc_completion_queue_attributes attr = {1, GRPC_CQ_NEXT, 63 GRPC_CQ_DEFAULT_POLLING, nullptr}; 64 return g_default_cq_factory.vtable->create(&g_default_cq_factory, &attr); 65 } 66 67 grpc_completion_queue* grpc_completion_queue_create_for_pluck(void* reserved) { 68 GPR_ASSERT(!reserved); 69 grpc_completion_queue_attributes attr = {1, GRPC_CQ_PLUCK, 70 GRPC_CQ_DEFAULT_POLLING, nullptr}; 71 return g_default_cq_factory.vtable->create(&g_default_cq_factory, &attr); 72 } 73 74 grpc_completion_queue* grpc_completion_queue_create_for_callback( 75 grpc_experimental_completion_queue_functor* shutdown_callback, 76 void* reserved) { 77 GPR_ASSERT(!reserved); 78 grpc_completion_queue_attributes attr = { 79 2, GRPC_CQ_CALLBACK, GRPC_CQ_DEFAULT_POLLING, shutdown_callback}; 80 return g_default_cq_factory.vtable->create(&g_default_cq_factory, &attr); 81 } 82 83 grpc_completion_queue* grpc_completion_queue_create( 84 const grpc_completion_queue_factory* factory, 85 const grpc_completion_queue_attributes* attr, void* reserved) { 86 GPR_ASSERT(!reserved); 87 return factory->vtable->create(factory, attr); 88 } 89
