mutex.h

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/*
**  ClanLib SDK
**  Copyright (c) 1997-2005 The ClanLib Team
**
**  This software is provided 'as-is', without any express or implied
**  warranty.  In no event will the authors be held liable for any damages
**  arising from the use of this software.
**
**  Permission is granted to anyone to use this software for any purpose,
**  including commercial applications, and to alter it and redistribute it
**  freely, subject to the following restrictions:
**
**  1. The origin of this software must not be misrepresented; you must not
**     claim that you wrote the original software. If you use this software
**     in a product, an acknowledgment in the product documentation would be
**     appreciated but is not required.
**  2. Altered source versions must be plainly marked as such, and must not be
**     misrepresented as being the original software.
**  3. This notice may not be removed or altered from any source distribution.
**
**  Note: Some of the libraries ClanLib link to may have additional
**  requirements or restrictions.
**
**  File Author(s):
**
**    Magnus Norddahl
*/

#ifndef header_mutex
#define header_mutex

#ifndef WIN32
#ifndef __USE_UNIX98
#define __USE_UNIX98
#endif
#include <pthread.h>
#endif

class CL_Mutex
{
public:
        CL_Mutex();

        ~CL_Mutex();

public:

public:
        void lock();

        bool try_lock();

        void unlock();

private:
#ifdef WIN32
        CRITICAL_SECTION critical_section;
#else
        pthread_mutex_t handle;
#endif
};

class CL_MutexSection
{
public:
        CL_MutexSection(CL_Mutex *mutex, bool lock = true);

        ~CL_MutexSection();

public:
        int get_lock_count() const;

public:
        void lock();

        bool try_lock();

        void unlock();

private:
        CL_Mutex *mutex;

        int lock_count;
};

#endif

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