Florian Mayer | 824274d | 2018-09-17 11:33:45 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2018 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_PROFILING_MEMORY_CLIENT_H_ |
| 18 | #define SRC_PROFILING_MEMORY_CLIENT_H_ |
| 19 | |
| 20 | #include <stddef.h> |
| 21 | #include <mutex> |
| 22 | #include <vector> |
| 23 | |
| 24 | #include "perfetto/base/scoped_file.h" |
| 25 | |
| 26 | namespace perfetto { |
| 27 | |
| 28 | class SocketPool; |
| 29 | |
| 30 | class BorrowedSocket { |
| 31 | public: |
| 32 | BorrowedSocket(const BorrowedSocket&) = delete; |
| 33 | BorrowedSocket& operator=(const BorrowedSocket&) = delete; |
| 34 | BorrowedSocket(BorrowedSocket&& other) { |
| 35 | fd_ = std::move(other.fd_); |
| 36 | socket_pool_ = other.socket_pool_; |
| 37 | other.socket_pool_ = nullptr; |
| 38 | } |
| 39 | |
| 40 | BorrowedSocket(base::ScopedFile fd, SocketPool* socket_pool); |
| 41 | int operator*(); |
| 42 | int get(); |
| 43 | void Close(); |
| 44 | ~BorrowedSocket(); |
| 45 | |
| 46 | private: |
| 47 | base::ScopedFile fd_; |
| 48 | SocketPool* socket_pool_ = nullptr; |
| 49 | }; |
| 50 | |
| 51 | class SocketPool { |
| 52 | public: |
| 53 | friend class BorrowedSocket; |
| 54 | SocketPool(std::vector<base::ScopedFile> sockets); |
| 55 | |
| 56 | BorrowedSocket Borrow(); |
| 57 | |
| 58 | private: |
| 59 | void Return(base::ScopedFile fd); |
| 60 | std::mutex mtx_; |
| 61 | std::condition_variable cv_; |
| 62 | std::vector<base::ScopedFile> sockets_; |
| 63 | size_t available_sockets_; |
| 64 | }; |
| 65 | |
| 66 | } // namespace perfetto |
| 67 | |
| 68 | #endif // SRC_PROFILING_MEMORY_CLIENT_H_ |