// Copyright (C) 2002-2003

// David Moore, William E. Kempf

//

//  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)

#ifndef BOOST_BARRIER_JDM030602_HPP

#define BOOST_BARRIER_JDM030602_HPP

#include <boost/thread/detail/config.hpp>

#include <boost/thread/mutex.hpp>

#include <boost/thread/condition.hpp>

namespace boost {

class BOOST_THREAD_DECL barrier

{

public:

    barrier(unsigned int count);

    ~barrier();

    bool wait();

private:

    mutex m_mutex;

// disable warnings about non dll import

// see: http://www.boost.org/more/separate_compilation.html#dlls

#ifdef BOOST_MSVC

#   pragma warning(push)

#   pragma warning(disable: 4251 4231 4660 4275)

#endif

    condition m_cond;

#ifdef BOOST_MSVC

#   pragma warning(pop)

#endif

    unsigned int m_threshold;

    unsigned int m_count;

    unsigned int m_generation;

};

}   // namespace boost

#endif