Chris@102: /*
Chris@102:  * Distributed under the Boost Software License, Version 1.0.
Chris@102:  * (See accompanying file LICENSE_1_0.txt or copy at
Chris@102:  * http://www.boost.org/LICENSE_1_0.txt)
Chris@102:  *
Chris@102:  * Copyright (c) 2011 Helge Bahmann
Chris@102:  * Copyright (c) 2013 Tim Blechmann
Chris@102:  * Copyright (c) 2014 Andrey Semashev
Chris@102:  */
Chris@102: /*!
Chris@102:  * \file   atomic/fences.hpp
Chris@102:  *
Chris@102:  * This header contains definition of \c atomic_thread_fence and \c atomic_signal_fence functions.
Chris@102:  */
Chris@102: 
Chris@102: #ifndef BOOST_ATOMIC_FENCES_HPP_INCLUDED_
Chris@102: #define BOOST_ATOMIC_FENCES_HPP_INCLUDED_
Chris@102: 
Chris@102: #include <boost/memory_order.hpp>
Chris@102: #include <boost/atomic/capabilities.hpp>
Chris@102: #include <boost/atomic/detail/operations.hpp>
Chris@102: 
Chris@102: #ifdef BOOST_HAS_PRAGMA_ONCE
Chris@102: #pragma once
Chris@102: #endif
Chris@102: 
Chris@102: /*
Chris@102:  * IMPLEMENTATION NOTE: All interface functions MUST be declared with BOOST_FORCEINLINE,
Chris@102:  *                      see comment for convert_memory_order_to_gcc in ops_gcc_atomic.hpp.
Chris@102:  */
Chris@102: 
Chris@102: namespace boost {
Chris@102: 
Chris@102: namespace atomics {
Chris@102: 
Chris@102: #if BOOST_ATOMIC_THREAD_FENCE > 0
Chris@102: BOOST_FORCEINLINE void atomic_thread_fence(memory_order order) BOOST_NOEXCEPT
Chris@102: {
Chris@102:     detail::thread_fence(order);
Chris@102: }
Chris@102: #else
Chris@102: BOOST_FORCEINLINE void atomic_thread_fence(memory_order) BOOST_NOEXCEPT
Chris@102: {
Chris@102:     detail::lockpool::thread_fence();
Chris@102: }
Chris@102: #endif
Chris@102: 
Chris@102: #if BOOST_ATOMIC_SIGNAL_FENCE > 0
Chris@102: BOOST_FORCEINLINE void atomic_signal_fence(memory_order order) BOOST_NOEXCEPT
Chris@102: {
Chris@102:     detail::signal_fence(order);
Chris@102: }
Chris@102: #else
Chris@102: BOOST_FORCEINLINE void atomic_signal_fence(memory_order) BOOST_NOEXCEPT
Chris@102: {
Chris@102:     detail::lockpool::signal_fence();
Chris@102: }
Chris@102: #endif
Chris@102: 
Chris@102: } // namespace atomics
Chris@102: 
Chris@102: using atomics::atomic_thread_fence;
Chris@102: using atomics::atomic_signal_fence;
Chris@102: 
Chris@102: } // namespace boost
Chris@102: 
Chris@102: #endif // BOOST_ATOMIC_FENCES_HPP_INCLUDED_