summaryrefslogtreecommitdiff
path: root/Build/source/libs/poppler/poppler-src/goo/GooMutex.h
blob: 68dabc4028cfd5b13b65bd12b741f84ebbdf210b (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
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
//========================================================================
//
// GooMutex.h
//
// Portable mutex macros.
//
// Copyright 2002-2003 Glyph & Cog, LLC
//
//========================================================================

//========================================================================
//
// Modified under the Poppler project - http://poppler.freedesktop.org
//
// All changes made under the Poppler project to this file are licensed
// under GPL version 2 or later
//
// Copyright (C) 2009 Kovid Goyal <kovid@kovidgoyal.net>
// Copyright (C) 2013 Thomas Freitag <Thomas.Freitag@alfa.de>
// Copyright (C) 2013 Albert Astals Cid <aacid@kde.org>
// Copyright (C) 2013 Adam Reichold <adamreichold@myopera.com>
// Copyright (C) 2014 Bogdan Cristea <cristeab@gmail.com>
// Copyright (C) 2014 Peter Breitenlohner <peb@mppmu.mpg.de>
// Copyright (C) 2017 Adrian Johnson <ajohnson@redneon.com>
//
// To see a description of the changes please see the Changelog file that
// came with your tarball or type make ChangeLog if you are building from git
//
//========================================================================

#ifndef GMUTEX_H
#define GMUTEX_H

#ifdef MULTITHREADED

// Usage:
//
// GooMutex m;
// gInitMutex(&m);
// ...
// gLockMutex(&m);
//   ... critical section ...
// gUnlockMutex(&m);
// ...
// gDestroyMutex(&m);

#ifdef _WIN32
#ifndef NOMINMAX
#define NOMINMAX
#endif
#include <windows.h>

typedef CRITICAL_SECTION GooMutex;

#define gInitMutex(m) InitializeCriticalSection(m)
#define gDestroyMutex(m) DeleteCriticalSection(m)
#define gLockMutex(m) EnterCriticalSection(m)
#define gUnlockMutex(m) LeaveCriticalSection(m)

#else // assume pthreads

#include <pthread.h>

typedef pthread_mutex_t GooMutex;

inline void gInitMutex(GooMutex *m) {
  pthread_mutexattr_t mutexattr;
  pthread_mutexattr_init(&mutexattr);
  pthread_mutexattr_settype(&mutexattr, PTHREAD_MUTEX_RECURSIVE);
  pthread_mutex_init(m, &mutexattr);
  pthread_mutexattr_destroy(&mutexattr);
}
#define gDestroyMutex(m) pthread_mutex_destroy(m)
#define gLockMutex(m) pthread_mutex_lock(m)
#define gUnlockMutex(m) pthread_mutex_unlock(m)

#endif

class MutexLocker {
public:
  MutexLocker(GooMutex *mutexA) : mutex(mutexA) { gLockMutex(mutex); }
  ~MutexLocker() { gUnlockMutex(mutex); }

private:
  GooMutex *mutex;
};

#endif // MULTITHREADED

#endif // GMUTEX_H