#ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_WIN32_HPP_INCLUDED

#define BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_WIN32_HPP_INCLUDED

// MS compatible compilers support #pragma once

#if defined(_MSC_VER) && (_MSC_VER >= 1020)

# pragma once

#endif

//

//  boost/detail/atomic_count_win32.hpp

//

//  Copyright (c) 2001-2005 Peter Dimov

//

// Distributed under the Boost Software License, Version 1.0. (See

// accompanying file LICENSE_1_0.txt or copy at

// http://www.boost.org/LICENSE_1_0.txt)

//

#include <boost/detail/interlocked.hpp>

namespace boost

{

namespace detail

{

class atomic_count

{

public:

    explicit atomic_count( long v ): value_( v )

    {

    }

    long operator++()

    {

        return BOOST_INTERLOCKED_INCREMENT( &value_ );

    }

    long operator--()

    {

        return BOOST_INTERLOCKED_DECREMENT( &value_ );

    }

    operator long() const

    {

        return static_cast<long const volatile &>( value_ );

    }

private:

    atomic_count( atomic_count const & );

    atomic_count & operator=( atomic_count const & );

    long value_;

};

} // namespace detail

} // namespace boost

#endif // #ifndef BOOST_SMART_PTR_DETAIL_ATOMIC_COUNT_WIN32_HPP_INCLUDED