| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef INCLUDE_PERFETTO_EXT_IPC_HOST_H_ |
| #define INCLUDE_PERFETTO_EXT_IPC_HOST_H_ |
| |
| #include <memory> |
| |
| #include "perfetto/ext/base/scoped_file.h" |
| #include "perfetto/ext/base/unix_socket.h" |
| #include "perfetto/ext/ipc/basic_types.h" |
| |
| namespace perfetto { |
| |
| namespace base { |
| class TaskRunner; |
| } // namespace base |
| |
| namespace ipc { |
| |
| class Service; |
| |
| // The host-side of the IPC layer. This class acts as a registry and request |
| // dispatcher. It listen on the UnixSocket |socket_name| for incoming requests |
| // (coming Client instances) and dispatches their requests to the various |
| // Services exposed. |
| class Host { |
| public: |
| // Creates an instance and starts listening on the given |socket_name|. |
| // Returns nullptr if listening on the socket fails. |
| static std::unique_ptr<Host> CreateInstance(const char* socket_name, |
| base::TaskRunner*); |
| |
| // Like the above but takes a file descriptor to a pre-bound unix socket. |
| // Returns nullptr if listening on the socket fails. |
| static std::unique_ptr<Host> CreateInstance(base::ScopedSocketHandle, |
| base::TaskRunner*); |
| |
| // Creates a Host which is not backed by a POSIX listening socket. |
| // Instead, it accepts sockets passed in via AdoptConnectedSocket_Fuchsia(). |
| // See go/fuchsetto for more details. |
| static std::unique_ptr<Host> CreateInstance_Fuchsia(base::TaskRunner*); |
| |
| virtual ~Host(); |
| |
| // Registers a new service and makes it available to remote IPC peers. |
| // All the exposed Service instances will be destroyed when destroying the |
| // Host instance if ExposeService succeeds and returns true, or immediately |
| // after the call in case of failure. |
| // Returns true if the register has been successfully registered, false in |
| // case of errors (e.g., another service with the same name is already |
| // registered). |
| virtual bool ExposeService(std::unique_ptr<Service>) = 0; |
| |
| // Accepts a pre-connected socket handle and a callback used to send a |
| // shared memory FD to the remote client. |
| // The callback returns false if the FD could not be sent. |
| // Should only be used in conjunction with CreateInstance_Fuchsia(). |
| virtual void AdoptConnectedSocket_Fuchsia( |
| base::ScopedSocketHandle, |
| std::function<bool(int)> send_fd_cb) = 0; |
| |
| // Overrides the default send timeout for the per-connection sockets. |
| virtual void SetSocketSendTimeoutMs(uint32_t timeout_ms) = 0; |
| }; |
| |
| } // namespace ipc |
| } // namespace perfetto |
| |
| #endif // INCLUDE_PERFETTO_EXT_IPC_HOST_H_ |