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/* 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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef COMMON_MUTEX_H
#define COMMON_MUTEX_H
#include "common/scummsys.h"
#include "common/system.h"
namespace Common {
/**
* @defgroup common_mutex Mutex
* @ingroup common
*
* @brief API for managing the mutex.
* @{
*/
class Mutex;
class MutexInternal {
public:
virtual ~MutexInternal() {}
virtual bool lock() = 0;
virtual bool unlock() = 0;
};
/**
* Auxiliary class to (un)lock a mutex on the stack.
*/
class StackLock {
MutexInternal *_mutex;
const char *_mutexName;
bool lock();
bool unlock();
public:
explicit StackLock(MutexInternal *mutex, const char *mutexName = nullptr);
explicit StackLock(const Mutex &mutex, const char *mutexName = nullptr);
~StackLock();
};
/**
* Wrapper class around the OSystem mutex functions.
*/
class Mutex {
friend class StackLock;
MutexInternal *_mutex;
public:
Mutex();
~Mutex();
bool lock();
bool unlock();
};
/** @} */
} // End of namespace Common
#endif
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