Chris@101: //  Copyright (C) 2011-2013 Tim Blechmann
Chris@16: //
Chris@16: //  Distributed under the Boost Software License, Version 1.0. (See
Chris@16: //  accompanying file LICENSE_1_0.txt or copy at
Chris@16: //  http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16: #ifndef BOOST_LOCKFREE_DETAIL_ATOMIC_HPP
Chris@16: #define BOOST_LOCKFREE_DETAIL_ATOMIC_HPP
Chris@16: 
Chris@16: #include <boost/config.hpp>
Chris@16: 
Chris@101: #ifndef BOOST_LOCKFREE_FORCE_STD_ATOMIC
Chris@101: 
Chris@16: #define BOOST_LOCKFREE_NO_HDR_ATOMIC
Chris@16: 
Chris@16: // MSVC supports atomic<> from version 2012 onwards.
Chris@16: #if defined(BOOST_MSVC) && (BOOST_MSVC >= 1700)
Chris@16: #undef BOOST_LOCKFREE_NO_HDR_ATOMIC
Chris@16: #endif
Chris@16: 
Chris@16: // GCC supports atomic<> from version 4.8 onwards.
Chris@101: #if (BOOST_GCC >= 40800) && (__cplusplus >= 201103L)
Chris@16: #undef BOOST_LOCKFREE_NO_HDR_ATOMIC
Chris@16: #endif
Chris@16: 
Chris@101: #endif // BOOST_LOCKFREE_FORCE_STD_ATOMIC
Chris@101: 
Chris@16: 
Chris@16: #if defined(BOOST_LOCKFREE_NO_HDR_ATOMIC)
Chris@16: #include <boost/atomic.hpp>
Chris@16: #else
Chris@16: #include <atomic>
Chris@16: #endif
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace lockfree {
Chris@16: namespace detail {
Chris@16: 
Chris@16: #if defined(BOOST_LOCKFREE_NO_HDR_ATOMIC)
Chris@16: using boost::atomic;
Chris@16: using boost::memory_order_acquire;
Chris@16: using boost::memory_order_consume;
Chris@16: using boost::memory_order_relaxed;
Chris@16: using boost::memory_order_release;
Chris@16: #else
Chris@16: using std::atomic;
Chris@16: using std::memory_order_acquire;
Chris@16: using std::memory_order_consume;
Chris@16: using std::memory_order_relaxed;
Chris@16: using std::memory_order_release;
Chris@16: #endif
Chris@16: 
Chris@16: }
Chris@16: using detail::atomic;
Chris@16: using detail::memory_order_acquire;
Chris@16: using detail::memory_order_consume;
Chris@16: using detail::memory_order_relaxed;
Chris@16: using detail::memory_order_release;
Chris@16: 
Chris@16: }}
Chris@16: 
Chris@16: #endif /* BOOST_LOCKFREE_DETAIL_ATOMIC_HPP */