Mercurial > hg > vamp-build-and-test
diff DEPENDENCIES/generic/include/boost/memory_order.hpp @ 16:2665513ce2d3
Add boost headers
author | Chris Cannam |
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date | Tue, 05 Aug 2014 11:11:38 +0100 |
parents | |
children | c530137014c0 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DEPENDENCIES/generic/include/boost/memory_order.hpp Tue Aug 05 11:11:38 2014 +0100 @@ -0,0 +1,53 @@ +#ifndef BOOST_MEMORY_ORDER_HPP_INCLUDED +#define BOOST_MEMORY_ORDER_HPP_INCLUDED + +// MS compatible compilers support #pragma once + +#if defined(_MSC_VER) && (_MSC_VER >= 1020) +# pragma once +#endif + +// boost/memory_order.hpp +// +// Defines enum boost::memory_order per the C++0x working draft +// +// Copyright (c) 2008, 2009 Peter Dimov +// +// 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) + + +namespace boost +{ + +// +// Enum values are chosen so that code that needs to insert +// a trailing fence for acquire semantics can use a single +// test such as: +// +// if( mo & memory_order_acquire ) { ...fence... } +// +// For leading fences one can use: +// +// if( mo & memory_order_release ) { ...fence... } +// +// Architectures such as Alpha that need a fence on consume +// can use: +// +// if( mo & ( memory_order_acquire | memory_order_consume ) ) { ...fence... } +// + +enum memory_order +{ + memory_order_relaxed = 0, + memory_order_acquire = 1, + memory_order_release = 2, + memory_order_acq_rel = 3, // acquire | release + memory_order_seq_cst = 7, // acq_rel | 4 + memory_order_consume = 8 +}; + +} // namespace boost + +#endif // #ifndef BOOST_MEMORY_ORDER_HPP_INCLUDED