1 /* 2 * 3 * Copyright 2015 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 #ifndef GRPCPP_IMPL_GRPC_LIBRARY_H 20 #define GRPCPP_IMPL_GRPC_LIBRARY_H 21 22 #include <iostream> 23 24 #include <grpc/grpc.h> 25 #include <grpcpp/impl/codegen/config.h> 26 #include <grpcpp/impl/codegen/core_codegen.h> 27 #include <grpcpp/impl/codegen/grpc_library.h> 28 29 namespace grpc { 30 31 namespace internal { 32 class GrpcLibrary final : public GrpcLibraryInterface { 33 public: init()34 void init() override { grpc_init(); } shutdown()35 void shutdown() override { grpc_shutdown(); } 36 }; 37 38 static GrpcLibrary g_gli; 39 static CoreCodegen g_core_codegen; 40 41 /// Instantiating this class ensures the proper initialization of gRPC. 42 class GrpcLibraryInitializer final { 43 public: GrpcLibraryInitializer()44 GrpcLibraryInitializer() { 45 if (grpc::g_glip == nullptr) { 46 grpc::g_glip = &g_gli; 47 } 48 if (grpc::g_core_codegen_interface == nullptr) { 49 grpc::g_core_codegen_interface = &g_core_codegen; 50 } 51 } 52 53 /// A no-op method to force the linker to reference this class, which will 54 /// take care of initializing and shutting down the gRPC runtime. summon()55 int summon() { return 0; } 56 }; 57 58 } // namespace internal 59 } // namespace grpc 60 61 #endif // GRPCPP_IMPL_GRPC_LIBRARY_H 62