intrusive/detail/workaround.hpp

0001 //////////////////////////////////////////////////////////////////////////////
0002 //
0003 // (C) Copyright Ion Gaztanaga 2005-2013. Distributed under the Boost
0004 // Software License, Version 1.0. (See accompanying file
0005 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0006 //
0007 // See http://www.boost.org/libs/interprocess for documentation.
0008 //
0009 //////////////////////////////////////////////////////////////////////////////
0010
0011 #ifndef BOOST_INTRUSIVE_DETAIL_WORKAROUND_HPP
0012 #define BOOST_INTRUSIVE_DETAIL_WORKAROUND_HPP
0013
0014 #ifndef BOOST_CONFIG_HPP
0015 #  include <boost/config.hpp>
0016 #endif
0017
0018 #if defined(BOOST_HAS_PRAGMA_ONCE)
0019 #  pragma once
0020 #endif
0021
0022 #ifndef BOOST_CONFIG_HPP
0023 #include <boost/config.hpp>
0024 #endif
0025
0026 // MSVC-12 ICEs when variadic templates are enabled.
0027 #if    !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && (!defined(BOOST_MSVC) || BOOST_MSVC >= 1900)
0028    #define BOOST_INTRUSIVE_VARIADIC_TEMPLATES
0029 #endif
0030
0031 #if    !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
0032    #define BOOST_INTRUSIVE_PERFECT_FORWARDING
0033 #endif
0034
0035 //Macros for documentation purposes. For code, expands to the argument
0036 #define BOOST_INTRUSIVE_IMPDEF(TYPE) TYPE
0037 #define BOOST_INTRUSIVE_SEEDOC(TYPE) TYPE
0038 #define BOOST_INTRUSIVE_DOC1ST(TYPE1, TYPE2) TYPE2
0039 #define BOOST_INTRUSIVE_I ,
0040 #define BOOST_INTRUSIVE_DOCIGN(T1) T1
0041
0042 //#define BOOST_INTRUSIVE_DISABLE_FORCEINLINE
0043
0044 #if defined(BOOST_INTRUSIVE_DISABLE_FORCEINLINE)
0045    #define BOOST_INTRUSIVE_FORCEINLINE inline
0046 #elif defined(BOOST_INTRUSIVE_FORCEINLINE_IS_BOOST_FORCELINE)
0047    #define BOOST_INTRUSIVE_FORCEINLINE BOOST_FORCEINLINE
0048 #elif defined(BOOST_MSVC) && (_MSC_VER < 1900 || defined(_DEBUG))
0049    //"__forceinline" and MSVC seems to have some bugs in old versions and in debug mode
0050    #define BOOST_INTRUSIVE_FORCEINLINE inline
0051 #elif defined(BOOST_CLANG) || (defined(BOOST_GCC) && ((__GNUC__ <= 5) || defined(__MINGW32__)))
0052    //Older GCCs have problems with forceinline
0053    //Clang can have code bloat issues with forceinline, see
0054    //https://lists.boost.org/boost-users/2023/04/91445.php and
0055    //https://github.com/llvm/llvm-project/issues/62202
0056    #define BOOST_INTRUSIVE_FORCEINLINE inline
0057 #else
0058    #define BOOST_INTRUSIVE_FORCEINLINE BOOST_FORCEINLINE
0059 #endif
0060
0061 #if !(defined BOOST_NO_EXCEPTIONS)
0062 #    define BOOST_INTRUSIVE_TRY { try
0063 #    define BOOST_INTRUSIVE_CATCH(x) catch(x)
0064 #    define BOOST_INTRUSIVE_RETHROW throw;
0065 #    define BOOST_INTRUSIVE_CATCH_END }
0066 #else
0067 #    if !defined(BOOST_MSVC) || BOOST_MSVC >= 1900
0068 #        define BOOST_INTRUSIVE_TRY { if (true)
0069 #        define BOOST_INTRUSIVE_CATCH(x) else if (false)
0070 #    else
0071 // warning C4127: conditional expression is constant
0072 #        define BOOST_INTRUSIVE_TRY { \
0073              __pragma(warning(push)) \
0074              __pragma(warning(disable: 4127)) \
0075              if (true) \
0076              __pragma(warning(pop))
0077 #        define BOOST_INTRUSIVE_CATCH(x) else \
0078              __pragma(warning(push)) \
0079              __pragma(warning(disable: 4127)) \
0080              if (false) \
0081              __pragma(warning(pop))
0082 #    endif
0083 #    define BOOST_INTRUSIVE_RETHROW
0084 #    define BOOST_INTRUSIVE_CATCH_END }
0085 #endif
0086
0087 #ifndef BOOST_NO_CXX11_STATIC_ASSERT
0088 #  ifndef BOOST_NO_CXX11_VARIADIC_MACROS
0089 #     define BOOST_INTRUSIVE_STATIC_ASSERT( ... ) static_assert(__VA_ARGS__, #__VA_ARGS__)
0090 #  else
0091 #     define BOOST_INTRUSIVE_STATIC_ASSERT( B ) static_assert(B, #B)
0092 #  endif
0093 #else
0094 namespace boost {
0095 namespace intrusive {
0096 namespace detail {
0097
0098 template<bool B>
0099 struct STATIC_ASSERTION_FAILURE;
0100
0101 template<>
0102 struct STATIC_ASSERTION_FAILURE<true>{};
0103
0104 template<unsigned> struct static_assert_test {};
0105
0106 }}}
0107
0108 #define BOOST_INTRUSIVE_STATIC_ASSERT(B) \
0109          typedef ::boost::intrusive::detail::static_assert_test<\
0110             (unsigned)sizeof(::boost::intrusive::detail::STATIC_ASSERTION_FAILURE<bool(B)>)>\
0111                BOOST_JOIN(boost_intrusive_static_assert_typedef_, __LINE__) BOOST_ATTRIBUTE_UNUSED
0112
0113 #endif   //BOOST_NO_CXX11_STATIC_ASSERT
0114
0115
0116 //GCC has some false positives with some functions returning references.
0117 //This silences this warning in selected functions
0118 #if defined(BOOST_GCC) && (BOOST_GCC >= 140000)
0119 #  define BOOST_INTRUSIVE_NO_DANGLING __attribute__((no_dangling))
0120 #else
0121 #  define BOOST_INTRUSIVE_NO_DANGLING
0122 #endif
0123
0124
0125 #endif   //#ifndef BOOST_INTRUSIVE_DETAIL_WORKAROUND_HPP