Chris@16: // Copyright (C) 2000 Stephen Cleary
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See
Chris@16: // accompanying file LICENSE_1_0.txt or copy at
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: // See http://www.boost.org for updates, documentation, and revision history.
Chris@16: 
Chris@16: #ifndef BOOST_POOL_MUTEX_HPP
Chris@16: #define BOOST_POOL_MUTEX_HPP
Chris@16: 
Chris@16: #include <boost/config.hpp>  // for workarounds
Chris@16: #ifdef BOOST_HAS_THREADS
Chris@16: #include <boost/thread/mutex.hpp>
Chris@16: #endif
Chris@16: 
Chris@16: namespace boost{ namespace details{ namespace pool{
Chris@16: 
Chris@16: class null_mutex
Chris@16: {
Chris@16:   private:
Chris@16:     null_mutex(const null_mutex &);
Chris@16:     void operator=(const null_mutex &);
Chris@16: 
Chris@16:   public:
Chris@16:     null_mutex() { }
Chris@16: 
Chris@16:     static void lock() { }
Chris@16:     static void unlock() { }
Chris@16: };
Chris@16: 
Chris@16: #if !defined(BOOST_HAS_THREADS) || defined(BOOST_NO_MT) || defined(BOOST_POOL_NO_MT)
Chris@16:   typedef null_mutex default_mutex;
Chris@16: #else
Chris@16:   typedef boost::mutex default_mutex;
Chris@16: #endif
Chris@16: 
Chris@16: } // namespace pool
Chris@16: } // namespace details
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #endif