Zonr Chang | d670be7 | 2012-04-05 15:09:28 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2012, 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 | |
Stephen Hines | 2f6a493 | 2012-05-03 12:27:13 -0700 | [diff] [blame] | 17 | #ifndef BCC_EXECUTION_ENGINE_FILE_MUTEX_H |
| 18 | #define BCC_EXECUTION_ENGINE_FILE_MUTEX_H |
Zonr Chang | d670be7 | 2012-04-05 15:09:28 +0800 | [diff] [blame] | 19 | |
| 20 | #include <string> |
| 21 | |
Stephen Hines | 2f6a493 | 2012-05-03 12:27:13 -0700 | [diff] [blame] | 22 | #include "FileBase.h" |
Zonr Chang | d670be7 | 2012-04-05 15:09:28 +0800 | [diff] [blame] | 23 | |
| 24 | namespace bcc { |
| 25 | |
| 26 | template<enum FileBase::LockModeEnum LockMode> |
| 27 | class FileMutex : public FileBase { |
| 28 | public: |
| 29 | FileMutex(const std::string &pFileToLock) |
| 30 | : FileBase(pFileToLock + ".lock", O_RDONLY | O_CREAT, 0) { } |
| 31 | |
| 32 | // Provide a lock() interface filled with default configuration. |
| 33 | inline bool lock(bool pNonblocking = true, |
| 34 | unsigned pMaxRetry = FileBase::kDefaultMaxRetryLock, |
| 35 | useconds_t pRetryInterval = |
| 36 | FileBase::kDefaultRetryLockInterval) { |
| 37 | return FileBase::lock(LockMode, pNonblocking, pMaxRetry, pRetryInterval); |
| 38 | } |
| 39 | }; |
| 40 | |
| 41 | } // namespace bcc |
| 42 | |
Stephen Hines | 2f6a493 | 2012-05-03 12:27:13 -0700 | [diff] [blame] | 43 | #endif // BCC_EXECUTION_ENGINE_FILE_MUTEX_H |