blob: fdea8c0d7c91b8e594e3af1b5b33bcad05ec3a17 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
/*
* 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 "FileBase.h"
namespace bcc {
// This class is used to acquire write locks.
// TODO(jeanluc) More documentation.
class FileMutex : public FileBase {
public:
explicit FileMutex(const std::string &pFileToLock)
: FileBase(pFileToLock + ".lock", O_RDONLY | O_CREAT, kDeleteOnClose) { }
// Provide a lock() interface filled with default configuration.
inline bool lockMutex() {
return FileBase::lock(FileBase::kWriteLock, true, FileBase::kDefaultMaxRetryLock,
FileBase::kDefaultRetryLockInterval);
}
};
} // namespace bcc
#endif // BCC_SUPPORT_FILE_MUTEX_H
|
