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| author | Remko Tronçon <git@el-tramo.be> | 2009-06-01 08:48:42 (GMT) |
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| committer | Remko Tronçon <git@el-tramo.be> | 2009-06-01 09:24:28 (GMT) |
| commit | 2812bddd81f8a1b804c7460f4e14cd0aa393d129 (patch) | |
| tree | d46294f35150c4f0f43deaf2d31fceaf945ae715 /3rdParty/Boost/boost/aligned_storage.hpp | |
| download | swift-2812bddd81f8a1b804c7460f4e14cd0aa393d129.zip swift-2812bddd81f8a1b804c7460f4e14cd0aa393d129.tar.bz2 | |
Import.
Diffstat (limited to '3rdParty/Boost/boost/aligned_storage.hpp')
| -rw-r--r-- | 3rdParty/Boost/boost/aligned_storage.hpp | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/3rdParty/Boost/boost/aligned_storage.hpp b/3rdParty/Boost/boost/aligned_storage.hpp new file mode 100644 index 0000000..cfaf787 --- /dev/null +++ b/3rdParty/Boost/boost/aligned_storage.hpp @@ -0,0 +1,170 @@ +//----------------------------------------------------------------------------- +// boost aligned_storage.hpp header file +// See http://www.boost.org for updates, documentation, and revision history. +//----------------------------------------------------------------------------- +// +// Copyright (c) 2002-2003 +// Eric Friedman, Itay Maman +// +// 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) + +#ifndef BOOST_ALIGNED_STORAGE_HPP +#define BOOST_ALIGNED_STORAGE_HPP + +#include <cstddef> // for std::size_t + +#include "boost/config.hpp" +#include "boost/detail/workaround.hpp" +#include "boost/type_traits/alignment_of.hpp" +#include "boost/type_traits/type_with_alignment.hpp" +#include "boost/type_traits/is_pod.hpp" + +#include "boost/mpl/eval_if.hpp" +#include "boost/mpl/identity.hpp" + +#include "boost/type_traits/detail/bool_trait_def.hpp" + +namespace boost { + +namespace detail { namespace aligned_storage { + +BOOST_STATIC_CONSTANT( + std::size_t + , alignment_of_max_align = ::boost::alignment_of<max_align>::value + ); + +// +// To be TR1 conforming this must be a POD type: +// +template < + std::size_t size_ + , std::size_t alignment_ +> +struct aligned_storage_imp +{ + union data_t + { + char buf[size_]; + + typename mpl::eval_if_c< + alignment_ == std::size_t(-1) + , mpl::identity<detail::max_align> + , type_with_alignment<alignment_> + >::type align_; + } data_; +}; + +}} // namespace detail::aligned_storage + +template < + std::size_t size_ + , std::size_t alignment_ = std::size_t(-1) +> +class aligned_storage +{ +private: // representation + + detail::aligned_storage::aligned_storage_imp<size_, alignment_> data_; + +public: // constants + + typedef detail::aligned_storage::aligned_storage_imp<size_, alignment_> type; + + BOOST_STATIC_CONSTANT( + std::size_t + , size = size_ + ); + BOOST_STATIC_CONSTANT( + std::size_t + , alignment = ( + alignment_ == std::size_t(-1) + ? ::boost::detail::aligned_storage::alignment_of_max_align + : alignment_ + ) + ); + +#if defined(__GNUC__) &&\ + (__GNUC__ > 3) ||\ + (__GNUC__ == 3 && (__GNUC_MINOR__ > 2 ||\ + (__GNUC_MINOR__ == 2 && __GNUC_PATCHLEVEL__ >=3))) + +private: // noncopyable + + aligned_storage(const aligned_storage&); + aligned_storage& operator=(const aligned_storage&); + +#else // gcc less than 3.2.3 + +public: // _should_ be noncopyable, but GCC compiler emits error + + aligned_storage(const aligned_storage&); + aligned_storage& operator=(const aligned_storage&); + +#endif // gcc < 3.2.3 workaround + +public: // structors + + aligned_storage() + { + } + + ~aligned_storage() + { + } + +public: // accessors + + void* address() + { + return this; + } + +#if !BOOST_WORKAROUND(BOOST_MSVC, < 1300) + + const void* address() const + { + return this; + } + +#else // MSVC6 + + const void* address() const; + +#endif // MSVC6 workaround + +}; + +#if BOOST_WORKAROUND(BOOST_MSVC, < 1300) + +// MSVC6 seems not to like inline functions with const void* returns, so we +// declare the following here: + +template <std::size_t S, std::size_t A> +const void* aligned_storage<S,A>::address() const +{ + return const_cast< aligned_storage<S,A>* >(this)->address(); +} + +#endif // MSVC6 workaround + +#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION +// +// Make sure that is_pod recognises aligned_storage<>::type +// as a POD (Note that aligned_storage<> itself is not a POD): +// +template <std::size_t size_, std::size_t alignment_> +struct is_pod<boost::detail::aligned_storage::aligned_storage_imp<size_,alignment_> > + BOOST_TT_AUX_BOOL_C_BASE(true) +{ + BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(true) +}; +#endif + + +} // namespace boost + +#include "boost/type_traits/detail/bool_trait_undef.hpp" + +#endif // BOOST_ALIGNED_STORAGE_HPP |