/* -*- mode: C++; indent-tabs-mode: nil; -*-

 *

 * This file is a part of LEMON, a generic C++ optimization library.

 *

 * Copyright (C) 2003-2012

 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

 * (Egervary Research Group on Combinatorial Optimization, EGRES).

 *

 * Permission to use, modify and distribute this software is granted

 * provided that this copyright notice appears in all copies. For

 * precise terms see the accompanying LICENSE file.

 *

 * This software is provided "AS IS" with no warranty of any kind,

 * express or implied, and with no claim as to its suitability for any

 * purpose.

 *

 */

#ifndef LEMON_BITS_LOCK_H

#define LEMON_BITS_LOCK_H

#include <lemon/config.h>

#if defined(LEMON_USE_PTHREAD)

#include <pthread.h>

#elif defined(LEMON_USE_WIN32_THREADS)

#include <lemon/bits/windows.h>

#endif

namespace lemon {

  namespace bits {

#if defined(LEMON_USE_PTHREAD)

    class Lock {

    public:

      Lock() {

	pthread_mutex_init(&_lock, 0);

      }

      ~Lock() {

	pthread_mutex_destroy(&_lock);

      }

      void lock() {

	pthread_mutex_lock(&_lock);

      }

      void unlock() {

	pthread_mutex_unlock(&_lock);

      }

    private:

      pthread_mutex_t _lock;

    };

#elif defined(LEMON_USE_WIN32_THREADS)

    class Lock : public WinLock {};

#else

    class Lock {

    public:

      Lock() {}

      ~Lock() {}

      void lock() {}

      void unlock() {}

    };    

#endif

  }

}

#endif