| /* |
| * Copyright (C) 2018 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 SRC_PROFILING_MEMORY_CLIENT_H_ |
| #define SRC_PROFILING_MEMORY_CLIENT_H_ |
| |
| #include <stddef.h> |
| #include <mutex> |
| #include <vector> |
| |
| #include "perfetto/base/scoped_file.h" |
| |
| namespace perfetto { |
| |
| class SocketPool; |
| |
| class BorrowedSocket { |
| public: |
| BorrowedSocket(const BorrowedSocket&) = delete; |
| BorrowedSocket& operator=(const BorrowedSocket&) = delete; |
| BorrowedSocket(BorrowedSocket&& other) { |
| fd_ = std::move(other.fd_); |
| socket_pool_ = other.socket_pool_; |
| other.socket_pool_ = nullptr; |
| } |
| |
| BorrowedSocket(base::ScopedFile fd, SocketPool* socket_pool); |
| int operator*(); |
| int get(); |
| void Close(); |
| ~BorrowedSocket(); |
| |
| private: |
| base::ScopedFile fd_; |
| SocketPool* socket_pool_ = nullptr; |
| }; |
| |
| class SocketPool { |
| public: |
| friend class BorrowedSocket; |
| SocketPool(std::vector<base::ScopedFile> sockets); |
| |
| BorrowedSocket Borrow(); |
| |
| private: |
| void Return(base::ScopedFile fd); |
| std::mutex mtx_; |
| std::condition_variable cv_; |
| std::vector<base::ScopedFile> sockets_; |
| size_t available_sockets_; |
| }; |
| |
| } // namespace perfetto |
| |
| #endif // SRC_PROFILING_MEMORY_CLIENT_H_ |