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//========================================================================
//
// 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
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