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#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/smart_ptr/detail/sp_interlocked.hpp>
namespace boost
{
namespace detail
{
class atomic_count
{
public:
explicit atomic_count( long v ): value_( v )
{
}
long operator++()
{
return BOOST_SP_INTERLOCKED_INCREMENT( &value_ );
}
long operator--()
{
return BOOST_SP_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
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