ceph/src/boost/boost/context/detail/config.hpp

   1
   2 //          Copyright Oliver Kowalke 2014.
   3 // Distributed under the Boost Software License, Version 1.0.
   4 //    (See accompanying file LICENSE_1_0.txt or copy at
   5 //          http://www.boost.org/LICENSE_1_0.txt)
   6
   7 #ifndef BOOST_CONTEXT_DETAIL_CONFIG_H
   8 #define BOOST_CONTEXT_DETAIL_CONFIG_H
   9
  10 // required for SD-6 compile-time integer sequences
  11 #include <utility>
  12
  13 #include <boost/config.hpp>
  14 #include <boost/detail/workaround.hpp>
  15
  16 #ifdef BOOST_CONTEXT_DECL
  17 # undef BOOST_CONTEXT_DECL
  18 #endif
  19
  20 #if (defined(BOOST_ALL_DYN_LINK) || defined(BOOST_CONTEXT_DYN_LINK) ) && ! defined(BOOST_CONTEXT_STATIC_LINK)
  21 # if defined(BOOST_CONTEXT_SOURCE)
  22 #  define BOOST_CONTEXT_DECL BOOST_SYMBOL_EXPORT
  23 #  define BOOST_CONTEXT_BUILD_DLL
  24 # else
  25 #  define BOOST_CONTEXT_DECL BOOST_SYMBOL_IMPORT
  26 # endif
  27 #endif
  28
  29 #if ! defined(BOOST_CONTEXT_DECL)
  30 # define BOOST_CONTEXT_DECL
  31 #endif
  32
  33 #if ! defined(BOOST_USE_UCONTEXT) && defined(__CYGWIN__)
  34 # define BOOST_USE_UCONTEXT
  35 #endif
  36
  37 #if ! defined(BOOST_CONTEXT_SOURCE) && ! defined(BOOST_ALL_NO_LIB) && ! defined(BOOST_CONTEXT_NO_LIB)
  38 # define BOOST_LIB_NAME boost_context
  39 # if defined(BOOST_ALL_DYN_LINK) || defined(BOOST_CONTEXT_DYN_LINK)
  40 #  define BOOST_DYN_LINK
  41 # endif
  42 # include <boost/config/auto_link.hpp>
  43 #endif
  44
  45 #undef BOOST_CONTEXT_CALLDECL
  46 #if (defined(i386) || defined(__i386__) || defined(__i386) \
  47      || defined(__i486__) || defined(__i586__) || defined(__i686__) \
  48      || defined(__X86__) || defined(_X86_) || defined(__THW_INTEL__) \
  49      || defined(__I86__) || defined(__INTEL__) || defined(__IA32__) \
  50      || defined(_M_IX86) || defined(_I86_)) && defined(BOOST_WINDOWS)
  51 # define BOOST_CONTEXT_CALLDECL __cdecl
  52 #else
  53 # define BOOST_CONTEXT_CALLDECL
  54 #endif
  55
  56 #if defined(BOOST_USE_SEGMENTED_STACKS)
  57 # if ! ( (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6) ) ) || \
  58          (defined(__clang__) && (__clang_major__ > 2 || ( __clang_major__ == 2 && __clang_minor__ > 3) ) ) )
  59 #  error "compiler does not support segmented_stack stacks"
  60 # endif
  61 # define BOOST_CONTEXT_SEGMENTS 10
  62 #endif
  63
  64
  65 #define BOOST_CONTEXT_NO_CXX14_INTEGER_SEQUENCE
  66 // use rd6 macros for std::integer_sequence
  67 #if defined(__cpp_lib_integer_sequence) && __cpp_lib_integer_sequence >= 201304
  68 # undef BOOST_CONTEXT_NO_CXX14_INTEGER_SEQUENCE
  69 #endif
  70 // workaroud: MSVC 14 does not provide macros to test for compile-time integer sequence
  71 #if _MSC_VER > 1800 // _MSC_VER == 1800 -> MS Visual Studio 2013
  72 # undef BOOST_CONTEXT_NO_INDEX_SEQUENCE
  73 #endif
  74 // workaround: Xcode clang feature detection
  75 #if ! defined(__cpp_lib_integer_sequence) && __cpp_lib_integer_sequence >= 201304
  76 # if _LIBCPP_STD_VER > 11
  77 #  undef BOOST_CONTEXT_NO_CXX14_INTEGER_SEQUENCE
  78 # endif
  79 #endif
  80
  81 // workaroud: MSVC 14 does support constexpr
  82 #if _MSC_VER > 1800 // _MSC_VER == 1800 -> MS Visual Studio 2013
  83 # undef BOOST_NO_CXX11_CONSTEXPR
  84 #endif
  85
  86 #undef BOOST_CONTEXT_NO_CXX11
  87 #if defined(BOOST_NO_CXX11_AUTO_DECLARATIONS) || \
  88     defined(BOOST_NO_CXX11_CONSTEXPR) || \
  89     defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) || \
  90     defined(BOOST_NO_CXX11_FINAL) || \
  91     defined(BOOST_NO_CXX11_HDR_TUPLE) || \
  92     defined(BOOST_NO_CXX11_NOEXCEPT) || \
  93     defined(BOOST_NO_CXX11_NULLPTR) || \
  94     defined(BOOST_NO_CXX11_RVALUE_REFERENCES) || \
  95     defined(BOOST_NO_CXX11_TEMPLATE_ALIASES) || \
  96     defined(BOOST_NO_CXX11_UNIFIED_INITIALISATION_SYNTAX) || \
  97     defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) || \
  98     defined(BOOST_NO_HDR_ATOMIC) || \
  99     defined(BOOST_NO_HDR_TUPLE)
 100 # define BOOST_CONTEXT_NO_CXX11
 101 #endif
 102
 103 #if ! defined(BOOST_EXECUTION_CONTEXT)
 104 # if defined(BOOST_USE_SEGMENTED_STACKS)
 105 #  define BOOST_EXECUTION_CONTEXT 1
 106 # else
 107 #  define BOOST_EXECUTION_CONTEXT 2
 108 # endif
 109 #endif
 110
 111 #if ! defined(BOOST_NO_CXX11_CONSTEXPR)
 112 // modern architectures have cachelines with 64byte length
 113 // ARM Cortex-A15 32/64byte, Cortex-A9 16/32/64bytes
 114 // MIPS 74K: 32byte, 4KEc: 16byte
 115 // ist should be safe to use 64byte for all
 116 static constexpr std::size_t cache_alignment{ 64 };
 117 static constexpr std::size_t cacheline_length{ 64 };
 118 // lookahead size for prefetching
 119 static constexpr std::size_t prefetch_stride{ 4 * cacheline_length };
 120 #endif
 121
 122 #if defined(__GLIBCPP__) || defined(__GLIBCXX__)
 123 // GNU libstdc++ 3
 124 #  define BOOST_CONTEXT_HAS_CXXABI_H
 125 #endif
 126
 127 #if defined( BOOST_CONTEXT_HAS_CXXABI_H )
 128 # include <cxxabi.h>
 129 #endif
 130
 131 #if defined(__OpenBSD__)
 132 // stacks need mmap(2) with MAP_STACK
 133 # define BOOST_CONTEXT_USE_MAP_STACK
 134 #endif
 135
 136 #endif // BOOST_CONTEXT_DETAIL_CONFIG_H