// 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