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/scoped_file.h" 27 #include "perfetto/ext/base/thread_checker.h" 28 #include "perfetto/ext/base/unix_socket.h" 29 #include "perfetto/ext/ipc/deferred.h" 30 #include "perfetto/ext/ipc/host.h" 31 #include "src/ipc/buffered_frame_deserializer.h" 32 33 namespace perfetto { 34 namespace ipc { 35 36 constexpr uint32_t kDefaultIpcTxTimeoutMs = 10000; 37 38 class HostImpl : public Host, public base::UnixSocket::EventListener { 39 public: 40 HostImpl(const char* socket_name, base::TaskRunner*); 41 HostImpl(base::ScopedSocketHandle, base::TaskRunner*); 42 HostImpl(base::TaskRunner* task_runner); 43 ~HostImpl() override; 44 45 // Host implementation. 46 bool ExposeService(std::unique_ptr<Service>) override; 47 void AdoptConnectedSocket_Fuchsia( 48 base::ScopedSocketHandle, 49 std::function<bool(int)> send_fd_cb) override; 50 void SetSocketSendTimeoutMs(uint32_t timeout_ms) override; 51 52 // base::UnixSocket::EventListener implementation. 53 void OnNewIncomingConnection(base::UnixSocket*, 54 std::unique_ptr<base::UnixSocket>) override; 55 void OnDisconnect(base::UnixSocket*) override; 56 void OnDataAvailable(base::UnixSocket*) override; 57 sock()58 const base::UnixSocket* sock() const { return sock_.get(); } 59 60 private: 61 // Owns the per-client receive buffer (BufferedFrameDeserializer). 62 struct ClientConnection { 63 ~ClientConnection(); 64 ClientID id; 65 std::unique_ptr<base::UnixSocket> sock; 66 BufferedFrameDeserializer frame_deserializer; 67 base::ScopedFile received_fd; 68 std::function<bool(int)> send_fd_cb_fuchsia; 69 }; 70 struct ExposedService { 71 ExposedService(ServiceID, const std::string&, std::unique_ptr<Service>); 72 ~ExposedService(); 73 ExposedService(ExposedService&&) noexcept; 74 ExposedService& operator=(ExposedService&&); 75 76 ServiceID id; 77 std::string name; 78 std::unique_ptr<Service> instance; 79 }; 80 81 HostImpl(const HostImpl&) = delete; 82 HostImpl& operator=(const HostImpl&) = delete; 83 84 bool Initialize(const char* socket_name); 85 void OnReceivedFrame(ClientConnection*, const Frame&); 86 void OnBindService(ClientConnection*, const Frame&); 87 void OnInvokeMethod(ClientConnection*, const Frame&); 88 void ReplyToMethodInvocation(ClientID, RequestID, AsyncResult<ProtoMessage>); 89 const ExposedService* GetServiceByName(const std::string&); 90 91 static void SendFrame(ClientConnection*, const Frame&, int fd = -1); 92 93 base::TaskRunner* const task_runner_; 94 std::map<ServiceID, ExposedService> services_; 95 std::unique_ptr<base::UnixSocket> sock_; // The listening socket. 96 std::map<ClientID, std::unique_ptr<ClientConnection>> clients_; 97 std::map<base::UnixSocket*, ClientConnection*> clients_by_socket_; 98 ServiceID last_service_id_ = 0; 99 ClientID last_client_id_ = 0; 100 uint32_t socket_tx_timeout_ms_ = kDefaultIpcTxTimeoutMs; 101 PERFETTO_THREAD_CHECKER(thread_checker_) 102 base::WeakPtrFactory<HostImpl> weak_ptr_factory_; // Keep last. 103 }; 104 105 } // namespace ipc 106 } // namespace perfetto 107 108 #endif // SRC_IPC_HOST_IMPL_H_ 109