scummvm/backends/mutex/pthread/pthread-mutex.cpp
2021-11-12 20:19:45 +01:00

87 lines
2.2 KiB
C++

/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#define FORBIDDEN_SYMBOL_EXCEPTION_time_h
#include "common/scummsys.h"
#if defined(__ANDROID__) || defined(IPHONE)
#include "backends/mutex/pthread/pthread-mutex.h"
#include <pthread.h>
/**
* pthreads mutex implementation
*/
class PthreadMutexInternal final : public Common::MutexInternal {
public:
PthreadMutexInternal();
virtual ~PthreadMutexInternal() override;
virtual bool lock() override;
virtual bool unlock() override;
private:
pthread_mutex_t _mutex;
};
PthreadMutexInternal::PthreadMutexInternal() {
pthread_mutexattr_t attr;
pthread_mutexattr_init(&attr);
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
if (pthread_mutex_init(&_mutex, &attr) != 0) {
warning("pthread_mutex_init() failed");
}
}
PthreadMutexInternal::~PthreadMutexInternal() {
if (pthread_mutex_destroy(&_mutex) != 0)
warning("pthread_mutex_destroy() failed");
}
bool PthreadMutexInternal::lock() {
if (pthread_mutex_lock(&_mutex) != 0) {
warning("pthread_mutex_lock() failed");
return false;
} else {
return true;
}
}
bool PthreadMutexInternal::unlock() {
if (pthread_mutex_unlock(&_mutex) != 0) {
warning("pthread_mutex_unlock() failed");
return false;
} else {
return true;
}
}
Common::MutexInternal *createPthreadMutexInternal() {
return new PthreadMutexInternal();
}
#endif