| /* |
| * Copyright (C) 2010 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 ASYNCHRONOUS_SOCKET_CLOSE_MONITOR_H_included |
| #define ASYNCHRONOUS_SOCKET_CLOSE_MONITOR_H_included |
| |
| #include "ScopedPthreadMutexLock.h" |
| #include <pthread.h> |
| |
| /** |
| * AsynchronousSocketCloseMonitor helps implement Java's asynchronous Socket.close semantics. |
| * |
| * AsynchronousSocketCloseMonitor::init must be called before anything else. |
| * |
| * Every blocking network I/O operation must be surrounded by an AsynchronousSocketCloseMonitor |
| * instance. For example: |
| * |
| * { |
| * AsynchronousSocketCloseMonitor monitor(fd); |
| * byteCount = ::read(fd, buf, sizeof(buf)); |
| * } |
| * |
| * To interrupt all threads currently blocked on file descriptor 'fd', call signalBlockedThreads: |
| * |
| * AsynchronousSocketCloseMonitor::signalBlockedThreads(fd); |
| */ |
| class AsynchronousSocketCloseMonitor { |
| public: |
| AsynchronousSocketCloseMonitor(int fd); |
| ~AsynchronousSocketCloseMonitor(); |
| |
| static void init(); |
| |
| static void signalBlockedThreads(int fd); |
| |
| private: |
| AsynchronousSocketCloseMonitor* mPrev; |
| AsynchronousSocketCloseMonitor* mNext; |
| pthread_t mThread; |
| int mFd; |
| |
| // Disallow copy and assignment. |
| AsynchronousSocketCloseMonitor(const AsynchronousSocketCloseMonitor&); |
| void operator=(const AsynchronousSocketCloseMonitor&); |
| }; |
| |
| #endif // ASYNCHRONOUS_SOCKET_CLOSE_MONITOR_H_included |