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, 2019 Andrey Semashev 9 */ 10 /*! 11 * \file atomic/detail/ops_msvc_common.hpp 12 * 13 * This header contains common tools for MSVC implementation of the atomic operations. 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 #include <boost/atomic/detail/header.hpp> 21 22 #ifdef BOOST_HAS_PRAGMA_ONCE 23 #pragma once 24 #endif 25 26 // Define compiler barriers 27 #if defined(__INTEL_COMPILER) 28 #define BOOST_ATOMIC_DETAIL_COMPILER_BARRIER() __memory_barrier() 29 #elif defined(__clang__) 30 #define BOOST_ATOMIC_DETAIL_COMPILER_BARRIER() __atomic_signal_fence(__ATOMIC_SEQ_CST) 31 #elif defined(_MSC_VER) && !defined(_WIN32_WCE) 32 extern "C" void _ReadWriteBarrier(void); 33 #pragma intrinsic(_ReadWriteBarrier) 34 #define BOOST_ATOMIC_DETAIL_COMPILER_BARRIER() _ReadWriteBarrier() 35 #endif 36 37 #ifndef BOOST_ATOMIC_DETAIL_COMPILER_BARRIER 38 #define BOOST_ATOMIC_DETAIL_COMPILER_BARRIER() 39 #endif 40 41 #include <boost/atomic/detail/footer.hpp> 42 43 #endif // BOOST_ATOMIC_DETAIL_OPS_MSVC_COMMON_HPP_INCLUDED_ 44