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 SRC_IPC_HOST_IMPL_H_ 18 #define SRC_IPC_HOST_IMPL_H_ 19 20 #include <map> 21 #include <set> 22 #include <string> 23 #include <vector> 24 25 #include "perfetto/base/task_runner.h" 26 #include "perfetto/ext/base/thread_checker.h" 27 #include "perfetto/ext/base/unix_socket.h" 28 #include "perfetto/ext/ipc/deferred.h" 29 #include "perfetto/ext/ipc/host.h" 30 #include "src/ipc/buffered_frame_deserializer.h" 31 32 namespace perfetto { 33 namespace ipc { 34 35 constexpr uint32_t kDefaultIpcTxTimeoutMs = 10000; 36 37 class HostImpl : public Host, public base::UnixSocket::EventListener { 38 public: 39 HostImpl(const char* socket_name, base::TaskRunner*); 40 HostImpl(base::ScopedSocketHandle, base::TaskRunner*); 41 ~HostImpl() override; 42 43 // Host implementation. 44 bool ExposeService(std::unique_ptr<Service>) override; 45 void SetSocketSendTimeoutMs(uint32_t timeout_ms) override; 46 47 // base::UnixSocket::EventListener implementation. 48 void OnNewIncomingConnection(base::UnixSocket*, 49 std::unique_ptr<base::UnixSocket>) override; 50 void OnDisconnect(base::UnixSocket*) override; 51 void OnDataAvailable(base::UnixSocket*) override; 52 sock()53 const base::UnixSocket* sock() const { return sock_.get(); } 54 55 private: 56 // Owns the per-client receive buffer (BufferedFrameDeserializer). 57 struct ClientConnection { 58 ~ClientConnection(); 59 ClientID id; 60 std::unique_ptr<base::UnixSocket> sock; 61 BufferedFrameDeserializer frame_deserializer; 62 base::ScopedFile received_fd; 63 }; 64 struct ExposedService { 65 ExposedService(ServiceID, const std::string&, std::unique_ptr<Service>); 66 ~ExposedService(); 67 ExposedService(ExposedService&&) noexcept; 68 ExposedService& operator=(ExposedService&&); 69 70 ServiceID id; 71 std::string name; 72 std::unique_ptr<Service> instance; 73 }; 74 75 HostImpl(const HostImpl&) = delete; 76 HostImpl& operator=(const HostImpl&) = delete; 77 78 bool Initialize(const char* socket_name); 79 void OnReceivedFrame(ClientConnection*, const Frame&); 80 void OnBindService(ClientConnection*, const Frame&); 81 void OnInvokeMethod(ClientConnection*, const Frame&); 82 void ReplyToMethodInvocation(ClientID, RequestID, AsyncResult<ProtoMessage>); 83 const ExposedService* GetServiceByName(const std::string&); 84 85 static void SendFrame(ClientConnection*, const Frame&, int fd = -1); 86 87 base::TaskRunner* const task_runner_; 88 std::map<ServiceID, ExposedService> services_; 89 std::unique_ptr<base::UnixSocket> sock_; // The listening socket. 90 std::map<ClientID, std::unique_ptr<ClientConnection>> clients_; 91 std::map<base::UnixSocket*, ClientConnection*> clients_by_socket_; 92 ServiceID last_service_id_ = 0; 93 ClientID last_client_id_ = 0; 94 uint32_t socket_tx_timeout_ms_ = kDefaultIpcTxTimeoutMs; 95 PERFETTO_THREAD_CHECKER(thread_checker_) 96 base::WeakPtrFactory<HostImpl> weak_ptr_factory_; // Keep last. 97 }; 98 99 } // namespace ipc 100 } // namespace perfetto 101 102 #endif // SRC_IPC_HOST_IMPL_H_ 103