blob: 2e1841bafcb3f82c3ace299657a9d387755b4b71 (
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
43
44
45
46
47
48
49
50
51
52
53
|
/*
This file is part of the KDE games library
Copyright (C) 2003 Nicolas Hadacek <hadacek@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License version 2 as published by the Free Software Foundation.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef KFILELOCK_H
#define KFILELOCK_H
class KFileLock
{
public:
KFileLock(int fd);
/** Call unlock(). */
~KFileLock();
/** @return the file descriptor. */
int fd() const { return _fd; }
/*
* Lock the file.
* @return 0 on success, -1 on failure (no permission) and -2 if another
* process is currently locking the file.
*/
int lock();
/** Unlock the file. */
void unlock();
/** @return true if we currently lock the file. */
bool isLocked() const { return _locked; }
private:
int _fd;
bool _locked;
};
#endif
|
