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43 lines
1.3 KiB
43 lines
1.3 KiB
/*
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* Copyright 2012, The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef BCC_SUPPORT_FILE_MUTEX_H
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#define BCC_SUPPORT_FILE_MUTEX_H
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#include <string>
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#include "FileBase.h"
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namespace bcc {
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// This class is used to acquire write locks.
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// TODO(jeanluc) More documentation.
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class FileMutex : public FileBase {
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public:
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explicit FileMutex(const std::string &pFileToLock)
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: FileBase(pFileToLock + ".lock", O_RDONLY | O_CREAT, kDeleteOnClose) { }
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// Provide a lock() interface filled with default configuration.
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inline bool lockMutex() {
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return FileBase::lock(FileBase::kWriteLock, true, FileBase::kDefaultMaxRetryLock,
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FileBase::kDefaultRetryLockInterval);
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}
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};
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} // namespace bcc
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#endif // BCC_SUPPORT_FILE_MUTEX_H
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