/* -*- 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