ceph/src/boost/boost/atomic/fences.hpp

   1 /*
   2  * Distributed under the Boost Software License, Version 1.0.
   3  * (See accompanying file LICENSE_1_0.txt or copy at
   4  * http://www.boost.org/LICENSE_1_0.txt)
   5  *
   6  * Copyright (c) 2011 Helge Bahmann
   7  * Copyright (c) 2013 Tim Blechmann
   8  * Copyright (c) 2014 Andrey Semashev
   9  */
  10 /*!
  11  * \file   atomic/fences.hpp
  12  *
  13  * This header contains definition of \c atomic_thread_fence and \c atomic_signal_fence functions.
  14  */
  15
  16 #ifndef BOOST_ATOMIC_FENCES_HPP_INCLUDED_
  17 #define BOOST_ATOMIC_FENCES_HPP_INCLUDED_
  18
  19 #include <boost/memory_order.hpp>
  20 #include <boost/atomic/capabilities.hpp>
  21 #include <boost/atomic/detail/fence_operations.hpp>
  22 #include <boost/atomic/detail/header.hpp>
  23
  24 #ifdef BOOST_HAS_PRAGMA_ONCE
  25 #pragma once
  26 #endif
  27
  28 /*
  29  * IMPLEMENTATION NOTE: All interface functions MUST be declared with BOOST_FORCEINLINE,
  30  *                      see comment for convert_memory_order_to_gcc in gcc_atomic_memory_order_utils.hpp.
  31  */
  32
  33 namespace boost {
  34
  35 namespace atomics {
  36
  37 BOOST_FORCEINLINE void atomic_thread_fence(memory_order order) BOOST_NOEXCEPT
  38 {
  39     atomics::detail::fence_operations::thread_fence(order);
  40 }
  41
  42 BOOST_FORCEINLINE void atomic_signal_fence(memory_order order) BOOST_NOEXCEPT
  43 {
  44     atomics::detail::fence_operations::signal_fence(order);
  45 }
  46
  47 } // namespace atomics
  48
  49 using atomics::atomic_thread_fence;
  50 using atomics::atomic_signal_fence;
  51
  52 } // namespace boost
  53
  54 #include <boost/atomic/detail/footer.hpp>
  55
  56 #endif // BOOST_ATOMIC_FENCES_HPP_INCLUDED_