From 8286ac511144e4f17d34eac9affb97e50646344a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?J=C3=B6rg=20Frings-F=C3=BCrst?= Date: Wed, 23 Jul 2014 15:25:44 +0200 Subject: Imported Upstream version 4.0.0 --- libcutl/cutl/details/boost/memory_order.hpp | 53 +++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 libcutl/cutl/details/boost/memory_order.hpp (limited to 'libcutl/cutl/details/boost/memory_order.hpp') diff --git a/libcutl/cutl/details/boost/memory_order.hpp b/libcutl/cutl/details/boost/memory_order.hpp new file mode 100644 index 0000000..0d57031 --- /dev/null +++ b/libcutl/cutl/details/boost/memory_order.hpp @@ -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 cutl_details_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 cutl_details_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 cutl_details_boost + +#endif // #ifndef BOOST_MEMORY_ORDER_HPP_INCLUDED -- cgit v1.2.3