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// Copyright Oliver Kowalke 2014.
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_CONTEXT_DETAIL_CONFIG_H
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#define BOOST_CONTEXT_DETAIL_CONFIG_H
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// required for SD-6 compile-time integer sequences
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#include <utility>
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#include <boost/config.hpp>
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#include <boost/detail/workaround.hpp>
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#ifdef BOOST_CONTEXT_DECL
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# undef BOOST_CONTEXT_DECL
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#endif
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#if (defined(BOOST_ALL_DYN_LINK) || defined(BOOST_CONTEXT_DYN_LINK) ) && ! defined(BOOST_CONTEXT_STATIC_LINK)
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# if defined(BOOST_CONTEXT_SOURCE)
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# define BOOST_CONTEXT_DECL BOOST_SYMBOL_EXPORT
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# define BOOST_CONTEXT_BUILD_DLL
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# else
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# define BOOST_CONTEXT_DECL BOOST_SYMBOL_IMPORT
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# endif
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#endif
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#if ! defined(BOOST_CONTEXT_DECL)
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# define BOOST_CONTEXT_DECL
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#endif
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#if ! defined(BOOST_CONTEXT_SOURCE) && ! defined(BOOST_ALL_NO_LIB) && ! defined(BOOST_CONTEXT_NO_LIB)
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# define BOOST_LIB_NAME boost_context
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# if defined(BOOST_ALL_DYN_LINK) || defined(BOOST_CONTEXT_DYN_LINK)
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# define BOOST_DYN_LINK
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# endif
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# include <boost/config/auto_link.hpp>
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#endif
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#undef BOOST_CONTEXT_CALLDECL
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#if (defined(i386) || defined(__i386__) || defined(__i386) \
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|| defined(__i486__) || defined(__i586__) || defined(__i686__) \
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|| defined(__X86__) || defined(_X86_) || defined(__THW_INTEL__) \
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|| defined(__I86__) || defined(__INTEL__) || defined(__IA32__) \
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|| defined(_M_IX86) || defined(_I86_)) && defined(BOOST_WINDOWS)
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# define BOOST_CONTEXT_CALLDECL __cdecl
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#else
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# define BOOST_CONTEXT_CALLDECL
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#endif
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#if defined(BOOST_USE_SEGMENTED_STACKS)
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# if ! ( (defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6) ) ) || \
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(defined(__clang__) && (__clang_major__ > 2 || ( __clang_major__ == 2 && __clang_minor__ > 3) ) ) )
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# error "compiler does not support segmented_stack stacks"
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# endif
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# define BOOST_CONTEXT_SEGMENTS 10
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#endif
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#define BOOST_CONTEXT_NO_CXX14_INTEGER_SEQUENCE
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// use rd6 macros for std::integer_sequence
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#if defined(__cpp_lib_integer_sequence) && __cpp_lib_integer_sequence >= 201304
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# undef BOOST_CONTEXT_NO_CXX14_INTEGER_SEQUENCE
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#endif
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// workaroud: MSVC 14 does not provide macros to test for compile-time integer sequence
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#if _MSC_VER > 1800 // _MSC_VER == 1800 -> MS Visual Studio 2013
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# undef BOOST_CONTEXT_NO_INDEX_SEQUENCE
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#endif
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// workaround: Xcode clang feature detection
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#if ! defined(__cpp_lib_integer_sequence) && __cpp_lib_integer_sequence >= 201304
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# if _LIBCPP_STD_VER > 11
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# undef BOOST_CONTEXT_NO_CXX14_INTEGER_SEQUENCE
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# endif
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#endif
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// workaroud: MSVC 14 does support constexpr
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#if _MSC_VER > 1800 // _MSC_VER == 1800 -> MS Visual Studio 2013
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# undef BOOST_NO_CXX11_CONSTEXPR
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#endif
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#undef BOOST_CONTEXT_NO_CXX11
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#if defined(BOOST_NO_CXX11_AUTO_DECLARATIONS) || \
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defined(BOOST_NO_CXX11_CONSTEXPR) || \
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defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) || \
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defined(BOOST_NO_CXX11_FINAL) || \
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defined(BOOST_NO_CXX11_HDR_TUPLE) || \
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defined(BOOST_NO_CXX11_NOEXCEPT) || \
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defined(BOOST_NO_CXX11_NULLPTR) || \
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defined(BOOST_NO_CXX11_RVALUE_REFERENCES) || \
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defined(BOOST_NO_CXX11_TEMPLATE_ALIASES) || \
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defined(BOOST_NO_CXX11_UNIFIED_INITIALISATION_SYNTAX) || \
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defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) || \
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defined(BOOST_NO_HDR_ATOMIC) || \
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defined(BOOST_NO_HDR_TUPLE)
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# define BOOST_CONTEXT_NO_CXX11
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#endif
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#if ! defined(BOOST_EXECUTION_CONTEXT)
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# if defined(BOOST_USE_SEGMENTED_STACKS)
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# define BOOST_EXECUTION_CONTEXT 1
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# else
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# define BOOST_EXECUTION_CONTEXT 2
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# endif
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#endif
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#if ! defined(BOOST_NO_CXX11_CONSTEXPR)
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// modern architectures have cachelines with 64byte length
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// ARM Cortex-A15 32/64byte, Cortex-A9 16/32/64bytes
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// MIPS 74K: 32byte, 4KEc: 16byte
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// ist should be safe to use 64byte for all
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static constexpr std::size_t cache_alignment{ 64 };
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static constexpr std::size_t cacheline_length{ 64 };
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// lookahead size for prefetching
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static constexpr std::size_t prefetch_stride{ 4 * cacheline_length };
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#endif
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#if defined(__GLIBCPP__) || defined(__GLIBCXX__)
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// GNU libstdc++ 3
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# define BOOST_CONTEXT_HAS_CXXABI_H
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#endif
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#if defined( BOOST_CONTEXT_HAS_CXXABI_H )
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# include <cxxabi.h>
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#endif
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#if defined(__OpenBSD__)
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// stacks need mmap(2) with MAP_STACK
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# define BOOST_CONTEXT_USE_MAP_STACK
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#endif
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#endif // BOOST_CONTEXT_DETAIL_CONFIG_H
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