/* * Copyright 2012, 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 BCC_SUPPORT_FILE_MUTEX_H #define BCC_SUPPORT_FILE_MUTEX_H #include <string> #include "bcc/Support/FileBase.h" namespace bcc { template<enum FileBase::LockModeEnum LockMode> class FileMutex : public FileBase { public: FileMutex(const std::string &pFileToLock) : FileBase(pFileToLock + ".lock", O_RDONLY | O_CREAT, 0) { } // Provide a lock() interface filled with default configuration. inline bool lock(bool pNonblocking = true, unsigned pMaxRetry = FileBase::kDefaultMaxRetryLock, useconds_t pRetryInterval = FileBase::kDefaultRetryLockInterval) { return FileBase::lock(LockMode, pNonblocking, pMaxRetry, pRetryInterval); } }; } // namespace bcc #endif // BCC_SUPPORT_FILE_MUTEX_H