Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

boost/signals2/mutex.hpp

//
//  boost/signals2/mutex.hpp - header-only mutex
//
//  Copyright (c) 2002, 2003 Peter Dimov and Multi Media Ltd.
//  Copyright (c) 2008 Frank Mori Hess
//
// 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)
//
//  boost::signals2::mutex is a modification of
//  boost::detail::lightweight_mutex to follow the newer Lockable
//  concept of Boost.Thread.
//

#ifndef BOOST_SIGNALS2_MUTEX_HPP
#define BOOST_SIGNALS2_MUTEX_HPP

// MS compatible compilers support #pragma once

#if defined(_MSC_VER)
# pragma once
#endif

#include <boost/config.hpp>

#if !defined(BOOST_HAS_THREADS)
# include <boost/signals2/detail/lwm_nop.hpp>
#elif defined(BOOST_HAS_PTHREADS)
#  include <boost/signals2/detail/lwm_pthreads.hpp>
#elif defined(BOOST_HAS_WINTHREADS)
#  include <boost/signals2/detail/lwm_win32_cs.hpp>
#else
// Use #define BOOST_DISABLE_THREADS to avoid the error
#  error Unrecognized threading platform
#endif

#endif // #ifndef BOOST_SIGNALS2_MUTEX_HPP