diff options
Diffstat (limited to 'src/third_party/boost/boost/type_traits/type_with_alignment.hpp')
-rw-r--r-- | src/third_party/boost/boost/type_traits/type_with_alignment.hpp | 399 |
1 files changed, 0 insertions, 399 deletions
diff --git a/src/third_party/boost/boost/type_traits/type_with_alignment.hpp b/src/third_party/boost/boost/type_traits/type_with_alignment.hpp deleted file mode 100644 index a86137f53a7..00000000000 --- a/src/third_party/boost/boost/type_traits/type_with_alignment.hpp +++ /dev/null @@ -1,399 +0,0 @@ -// (C) Copyright John Maddock 2000. -// Use, modification and distribution are subject to 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). -// -// See http://www.boost.org/libs/type_traits for most recent version including documentation. - -#ifndef BOOST_TT_TYPE_WITH_ALIGNMENT_INCLUDED -#define BOOST_TT_TYPE_WITH_ALIGNMENT_INCLUDED - -#include <boost/mpl/if.hpp> -#include <boost/preprocessor/list/for_each_i.hpp> -#include <boost/preprocessor/tuple/to_list.hpp> -#include <boost/preprocessor/cat.hpp> -#include <boost/preprocessor/list/transform.hpp> -#include <boost/preprocessor/list/append.hpp> -#include <boost/type_traits/alignment_of.hpp> -#include <boost/type_traits/is_pod.hpp> -#include <boost/static_assert.hpp> -#include <boost/config.hpp> - -// should be the last #include -#include <boost/type_traits/detail/bool_trait_def.hpp> - -#include <cstddef> - -#ifdef BOOST_MSVC -# pragma warning(push) -# pragma warning(disable: 4121) // alignment is sensitive to packing -#endif - -namespace boost { - -#ifndef __BORLANDC__ - -namespace detail { - -class alignment_dummy; -typedef void (*function_ptr)(); -typedef int (alignment_dummy::*member_ptr); -typedef int (alignment_dummy::*member_function_ptr)(); - -#ifdef BOOST_HAS_LONG_LONG -#define BOOST_TT_ALIGNMENT_BASE_TYPES BOOST_PP_TUPLE_TO_LIST( \ - 12, ( \ - char, short, int, long, ::boost::long_long_type, float, double, long double \ - , void*, function_ptr, member_ptr, member_function_ptr)) -#else -#define BOOST_TT_ALIGNMENT_BASE_TYPES BOOST_PP_TUPLE_TO_LIST( \ - 11, ( \ - char, short, int, long, float, double, long double \ - , void*, function_ptr, member_ptr, member_function_ptr)) -#endif - -#define BOOST_TT_HAS_ONE_T(D,Data,T) boost::detail::has_one_T< T > - -#define BOOST_TT_ALIGNMENT_STRUCT_TYPES \ - BOOST_PP_LIST_TRANSFORM(BOOST_TT_HAS_ONE_T, \ - X, \ - BOOST_TT_ALIGNMENT_BASE_TYPES) - -#define BOOST_TT_ALIGNMENT_TYPES \ - BOOST_PP_LIST_APPEND(BOOST_TT_ALIGNMENT_BASE_TYPES, \ - BOOST_TT_ALIGNMENT_STRUCT_TYPES) - -// -// lower_alignment_helper -- -// -// This template gets instantiated a lot, so use partial -// specialization when available to reduce the compiler burden. -// -#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION -template <bool found = true> -struct lower_alignment_helper_impl -{ - template <std::size_t, class> - struct apply - { - typedef char type; - enum { value = true }; - }; -}; - -template <> -struct lower_alignment_helper_impl<false> -{ - template <std::size_t target, class TestType> - struct apply - : public mpl::if_c<(alignment_of<TestType>::value == target), TestType, char> - { - enum { value = (alignment_of<TestType>::value == target) }; - }; -}; - -template <bool found, std::size_t target, class TestType> -struct lower_alignment_helper - : public lower_alignment_helper_impl<found>::template apply<target,TestType> -{ -}; -#else -template <bool found, std::size_t target, class TestType> -struct lower_alignment_helper -{ - typedef char type; - enum { value = true }; -}; - -template <std::size_t target, class TestType> -struct lower_alignment_helper<false,target,TestType> -{ - enum { value = (alignment_of<TestType>::value == target) }; - typedef typename mpl::if_c<value, TestType, char>::type type; -}; -#endif - -#define BOOST_TT_CHOOSE_MIN_ALIGNMENT(R,P,I,T) \ - typename lower_alignment_helper< \ - BOOST_PP_CAT(found,I),target,T \ - >::type BOOST_PP_CAT(t,I); \ - enum { \ - BOOST_PP_CAT(found,BOOST_PP_INC(I)) \ - = lower_alignment_helper<BOOST_PP_CAT(found,I),target,T >::value \ - }; - -#define BOOST_TT_CHOOSE_T(R,P,I,T) T BOOST_PP_CAT(t,I); - -template <typename T> -struct has_one_T -{ - T data; -}; - -template <std::size_t target> -union lower_alignment -{ - enum { found0 = false }; - - BOOST_PP_LIST_FOR_EACH_I( - BOOST_TT_CHOOSE_MIN_ALIGNMENT - , ignored - , BOOST_TT_ALIGNMENT_TYPES - ) -}; - -union max_align -{ - BOOST_PP_LIST_FOR_EACH_I( - BOOST_TT_CHOOSE_T - , ignored - , BOOST_TT_ALIGNMENT_TYPES - ) -}; - -#undef BOOST_TT_ALIGNMENT_BASE_TYPES -#undef BOOST_TT_HAS_ONE_T -#undef BOOST_TT_ALIGNMENT_STRUCT_TYPES -#undef BOOST_TT_ALIGNMENT_TYPES -#undef BOOST_TT_CHOOSE_MIN_ALIGNMENT -#undef BOOST_TT_CHOOSE_T - -template<std::size_t TAlign, std::size_t Align> -struct is_aligned -{ - BOOST_STATIC_CONSTANT(bool, - value = (TAlign >= Align) & (TAlign % Align == 0) - ); -}; - -#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION -BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,::boost::detail::max_align,true) -BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,::boost::detail::lower_alignment<1> ,true) -BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,::boost::detail::lower_alignment<2> ,true) -BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,::boost::detail::lower_alignment<4> ,true) -BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,::boost::detail::lower_alignment<8> ,true) -BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,::boost::detail::lower_alignment<10> ,true) -BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,::boost::detail::lower_alignment<16> ,true) -BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,::boost::detail::lower_alignment<32> ,true) -#endif - -} // namespace detail - -#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION -template<std::size_t Align> -struct is_pod< ::boost::detail::lower_alignment<Align> > -{ - BOOST_STATIC_CONSTANT(std::size_t, value = true); -}; -#endif - -// This alignment method originally due to Brian Parker, implemented by David -// Abrahams, and then ported here by Doug Gregor. -namespace detail{ - -template <std::size_t Align> -class type_with_alignment_imp -{ - typedef ::boost::detail::lower_alignment<Align> t1; - typedef typename mpl::if_c< - ::boost::detail::is_aligned< ::boost::alignment_of<t1>::value,Align >::value - , t1 - , ::boost::detail::max_align - >::type align_t; - - BOOST_STATIC_CONSTANT(std::size_t, found = alignment_of<align_t>::value); - - BOOST_STATIC_ASSERT(found >= Align); - BOOST_STATIC_ASSERT(found % Align == 0); - - public: - typedef align_t type; -}; - -} - -template <std::size_t Align> -class type_with_alignment - : public ::boost::detail::type_with_alignment_imp<Align> -{ -}; - -#if defined(__GNUC__) -namespace align { -struct __attribute__((__aligned__(2))) a2 {}; -struct __attribute__((__aligned__(4))) a4 {}; -struct __attribute__((__aligned__(8))) a8 {}; -struct __attribute__((__aligned__(16))) a16 {}; -struct __attribute__((__aligned__(32))) a32 {}; -struct __attribute__((__aligned__(64))) a64 {}; -struct __attribute__((__aligned__(128))) a128 {}; -} - -template<> class type_with_alignment<1> { public: typedef char type; }; -template<> class type_with_alignment<2> { public: typedef align::a2 type; }; -template<> class type_with_alignment<4> { public: typedef align::a4 type; }; -template<> class type_with_alignment<8> { public: typedef align::a8 type; }; -template<> class type_with_alignment<16> { public: typedef align::a16 type; }; -template<> class type_with_alignment<32> { public: typedef align::a32 type; }; -template<> class type_with_alignment<64> { public: typedef align::a64 type; }; -template<> class type_with_alignment<128> { public: typedef align::a128 type; }; - -namespace detail { -BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,::boost::align::a2,true) -BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,::boost::align::a4,true) -BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,::boost::align::a8,true) -BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,::boost::align::a16,true) -BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,::boost::align::a32,true) -BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,::boost::align::a64,true) -BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,::boost::align::a128,true) -} -#endif -#if (defined(BOOST_MSVC) || (defined(BOOST_INTEL) && defined(_MSC_VER))) && _MSC_VER >= 1300 -// -// MSVC supports types which have alignments greater than the normal -// maximum: these are used for example in the types __m64 and __m128 -// to provide types with alignment requirements which match the SSE -// registers. Therefore we extend type_with_alignment<> to support -// such types, however, we have to be careful to use a builtin type -// whenever possible otherwise we break previously working code: -// see http://article.gmane.org/gmane.comp.lib.boost.devel/173011 -// for an example and test case. Thus types like a8 below will -// be used *only* if the existing implementation can't provide a type -// with suitable alignment. This does mean however, that type_with_alignment<> -// may return a type which cannot be passed through a function call -// by value (and neither can any type containing such a type like -// Boost.Optional). However, this only happens when we have no choice -// in the matter because no other "ordinary" type is available. -// -namespace align { -struct __declspec(align(8)) a8 { - char m[8]; - typedef a8 type; -}; -struct __declspec(align(16)) a16 { - char m[16]; - typedef a16 type; -}; -struct __declspec(align(32)) a32 { - char m[32]; - typedef a32 type; -}; -struct __declspec(align(64)) a64 -{ - char m[64]; - typedef a64 type; -}; -struct __declspec(align(128)) a128 { - char m[128]; - typedef a128 type; -}; -} - -template<> class type_with_alignment<8> -{ - typedef mpl::if_c< - ::boost::alignment_of<boost::detail::max_align>::value < 8, - align::a8, - boost::detail::type_with_alignment_imp<8> >::type t1; -public: - typedef t1::type type; -}; -template<> class type_with_alignment<16> -{ - typedef mpl::if_c< - ::boost::alignment_of<boost::detail::max_align>::value < 16, - align::a16, - boost::detail::type_with_alignment_imp<16> >::type t1; -public: - typedef t1::type type; -}; -template<> class type_with_alignment<32> -{ - typedef mpl::if_c< - ::boost::alignment_of<boost::detail::max_align>::value < 32, - align::a32, - boost::detail::type_with_alignment_imp<32> >::type t1; -public: - typedef t1::type type; -}; -template<> class type_with_alignment<64> { - typedef mpl::if_c< - ::boost::alignment_of<boost::detail::max_align>::value < 64, - align::a64, - boost::detail::type_with_alignment_imp<64> >::type t1; -public: - typedef t1::type type; -}; -template<> class type_with_alignment<128> { - typedef mpl::if_c< - ::boost::alignment_of<boost::detail::max_align>::value < 128, - align::a128, - boost::detail::type_with_alignment_imp<128> >::type t1; -public: - typedef t1::type type; -}; - -namespace detail { -BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,::boost::align::a8,true) -BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,::boost::align::a16,true) -BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,::boost::align::a32,true) -BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,::boost::align::a64,true) -BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,::boost::align::a128,true) -} -#endif - -#else - -// -// Borland specific version, we have this for two reasons: -// 1) The version above doesn't always compile (with the new test cases for example) -// 2) Because of Borlands #pragma option we can create types with alignments that are -// greater that the largest aligned builtin type. - -namespace align{ -#pragma option push -a16 -struct a2{ short s; }; -struct a4{ int s; }; -struct a8{ double s; }; -struct a16{ long double s; }; -#pragma option pop -} - -namespace detail { - -typedef ::boost::align::a16 max_align; - -//#if ! BOOST_WORKAROUND(__CODEGEARC__, BOOST_TESTED_AT(0x610)) -BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,::boost::align::a2,true) -BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,::boost::align::a4,true) -BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,::boost::align::a8,true) -BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_pod,::boost::align::a16,true) -//#endif -} - -template <std::size_t N> struct type_with_alignment -{ - // We should never get to here, but if we do use the maximally - // aligned type: - // BOOST_STATIC_ASSERT(0); - typedef align::a16 type; -}; -template <> struct type_with_alignment<1>{ typedef char type; }; -template <> struct type_with_alignment<2>{ typedef align::a2 type; }; -template <> struct type_with_alignment<4>{ typedef align::a4 type; }; -template <> struct type_with_alignment<8>{ typedef align::a8 type; }; -template <> struct type_with_alignment<16>{ typedef align::a16 type; }; - -#endif - -} // namespace boost - -#ifdef BOOST_MSVC -# pragma warning(pop) -#endif - -#include <boost/type_traits/detail/bool_trait_undef.hpp> - -#endif // BOOST_TT_TYPE_WITH_ALIGNMENT_INCLUDED - - |