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/* * 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) * * Copyright (c) 2011 Helge Bahmann * Copyright (c) 2013 Tim Blechmann * Copyright (c) 2014 Andrey Semashev */ /*! * \file atomic/fences.hpp * * This header contains definition of \c atomic_thread_fence and \c atomic_signal_fence functions. */ #ifndef BOOST_ATOMIC_FENCES_HPP_INCLUDED_ #define BOOST_ATOMIC_FENCES_HPP_INCLUDED_ #include <boost/memory_order.hpp> #include <boost/atomic/capabilities.hpp> #include <boost/atomic/detail/operations.hpp> #ifdef BOOST_HAS_PRAGMA_ONCE #pragma once #endif /* * IMPLEMENTATION NOTE: All interface functions MUST be declared with BOOST_FORCEINLINE, * see comment for convert_memory_order_to_gcc in ops_gcc_atomic.hpp. */ namespace boost { namespace atomics { #if BOOST_ATOMIC_THREAD_FENCE > 0 BOOST_FORCEINLINE void atomic_thread_fence(memory_order order) BOOST_NOEXCEPT { detail::thread_fence(order); } #else BOOST_FORCEINLINE void atomic_thread_fence(memory_order) BOOST_NOEXCEPT { detail::lockpool::thread_fence(); } #endif #if BOOST_ATOMIC_SIGNAL_FENCE > 0 BOOST_FORCEINLINE void atomic_signal_fence(memory_order order) BOOST_NOEXCEPT { detail::signal_fence(order); } #else BOOST_FORCEINLINE void atomic_signal_fence(memory_order) BOOST_NOEXCEPT { detail::lockpool::signal_fence(); } #endif } // namespace atomics using atomics::atomic_thread_fence; using atomics::atomic_signal_fence; } // namespace boost #endif // BOOST_ATOMIC_FENCES_HPP_INCLUDED_