1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef INCLUDE_PERFETTO_TRACING_IPC_SERVICE_IPC_HOST_H_ 18 #define INCLUDE_PERFETTO_TRACING_IPC_SERVICE_IPC_HOST_H_ 19 20 #include <memory> 21 22 #include "perfetto/base/scoped_file.h" 23 #include "perfetto/tracing/core/basic_types.h" 24 25 namespace perfetto { 26 namespace base { 27 class TaskRunner; 28 } // namespace base. 29 30 class Service; 31 32 // Creates an instance of the service (business logic + UNIX socket transport). 33 // Exposed to: 34 // The code in the tracing client that will host the service e.g., traced. 35 // Implemented in: 36 // src/tracing/ipc/service/service_ipc_host_impl.cc 37 class ServiceIPCHost { 38 public: 39 static std::unique_ptr<ServiceIPCHost> CreateInstance(base::TaskRunner*); 40 virtual ~ServiceIPCHost(); 41 42 // Start listening on the Producer & Consumer ports. Returns false in case of 43 // failure (e.g., something else is listening on |socket_name|). 44 virtual bool Start(const char* producer_socket_name, 45 const char* consumer_socket_name) = 0; 46 47 // Like the above, but takes two file descriptors to already bound sockets. 48 // This is used when building as part of the Android tree, where init opens 49 // and binds the socket beore exec()-ing us. 50 virtual bool Start(base::ScopedFile producer_socket_fd, 51 base::ScopedFile consumer_socket_fd) = 0; 52 53 protected: 54 ServiceIPCHost(); 55 56 private: 57 ServiceIPCHost(const ServiceIPCHost&) = delete; 58 ServiceIPCHost& operator=(const ServiceIPCHost&) = delete; 59 }; 60 61 } // namespace perfetto 62 63 #endif // INCLUDE_PERFETTO_TRACING_IPC_SERVICE_IPC_HOST_H_ 64
