atomicrefcount.h

/*
  Copyright (c) 2007-2012 by Jakob Schroeter <js@camaya.net>
  This file is part of the gloox library. http://camaya.net/gloox

  This software is distributed under a license. The full license
  agreement can be found in the file LICENSE in this distribution.
  This software may not be copied, modified, sold or distributed
  other than expressed in the named license agreement.

  This software is distributed without any warranty.
*/


#ifndef ATOMICREFCOUNT_H__
#define ATOMICREFCOUNT_H__

#include "macros.h"
#include "mutex.h"

namespace gloox
{

  namespace util
  {
    class GLOOX_API AtomicRefCount
    {
      public:
        AtomicRefCount();

        int increment();

        int decrement();

      private:
        AtomicRefCount& operator=( const AtomicRefCount& );

        volatile int m_count;

        // The mutex is only used if a native function is unavailable.
        Mutex m_lock;

    };

  }

}

#endif // ATOMICREFCOUNT_H__