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) 2009 Helge Bahmann
7  * Copyright (c) 2012 Tim Blechmann
8  * Copyright (c) 2014 Andrey Semashev
9  */
10 /*!
11  * \file   atomic/detail/ops_msvc_common.hpp
12  *
13  * This header contains common tools for MSVC implementation of the \c operations template.
14  */
15 
16 #ifndef BOOST_ATOMIC_DETAIL_OPS_MSVC_COMMON_HPP_INCLUDED_
17 #define BOOST_ATOMIC_DETAIL_OPS_MSVC_COMMON_HPP_INCLUDED_
18 
19 #include <boost/atomic/detail/config.hpp>
20 
21 #ifdef BOOST_HAS_PRAGMA_ONCE
22 #pragma once
23 #endif
24 
25 // Define compiler barriers
26 #if defined(__INTEL_COMPILER)
27 #define BOOST_ATOMIC_DETAIL_COMPILER_BARRIER() __memory_barrier()
28 #elif defined(_MSC_VER) && !defined(_WIN32_WCE)
29 extern "C" void _ReadWriteBarrier(void);
30 #pragma intrinsic(_ReadWriteBarrier)
31 #define BOOST_ATOMIC_DETAIL_COMPILER_BARRIER() _ReadWriteBarrier()
32 #endif
33 
34 #ifndef BOOST_ATOMIC_DETAIL_COMPILER_BARRIER
35 #define BOOST_ATOMIC_DETAIL_COMPILER_BARRIER()
36 #endif
37 
38 #endif // BOOST_ATOMIC_DETAIL_OPS_MSVC_COMMON_HPP_INCLUDED_
39