| /* |
| * 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) |
| * |
| * Copyright (c) 2012 Hartmut Kaiser |
| * Copyright (c) 2014-2018, 2020 Andrey Semashev |
| */ |
| /*! |
| * \file atomic/detail/config.hpp |
| * |
| * This header defines configuraion macros for Boost.Atomic |
| */ |
| |
| #ifndef BOOST_ATOMIC_DETAIL_CONFIG_HPP_INCLUDED_ |
| #define BOOST_ATOMIC_DETAIL_CONFIG_HPP_INCLUDED_ |
| |
| #include <boost/config.hpp> |
| |
| #ifdef BOOST_HAS_PRAGMA_ONCE |
| #pragma once |
| #endif |
| |
| #if defined(__CUDACC__) |
| // nvcc does not support alternatives ("q,m") in asm statement constraints |
| #define BOOST_ATOMIC_DETAIL_NO_ASM_CONSTRAINT_ALTERNATIVES |
| // nvcc does not support condition code register ("cc") clobber in asm statements |
| #define BOOST_ATOMIC_DETAIL_NO_ASM_CLOBBER_CC |
| #endif |
| |
| #if !defined(BOOST_ATOMIC_DETAIL_NO_ASM_CLOBBER_CC) |
| #define BOOST_ATOMIC_DETAIL_ASM_CLOBBER_CC "cc" |
| #define BOOST_ATOMIC_DETAIL_ASM_CLOBBER_CC_COMMA "cc", |
| #else |
| #define BOOST_ATOMIC_DETAIL_ASM_CLOBBER_CC |
| #define BOOST_ATOMIC_DETAIL_ASM_CLOBBER_CC_COMMA |
| #endif |
| |
| #if (defined(__i386__) || defined(__x86_64__)) && (defined(__clang__) || (defined(BOOST_GCC) && (BOOST_GCC+0) < 40500) || defined(__SUNPRO_CC)) |
| // This macro indicates that the compiler does not support allocating eax:edx or rax:rdx register pairs ("A") in asm blocks |
| #define BOOST_ATOMIC_DETAIL_X86_NO_ASM_AX_DX_PAIRS |
| #endif |
| |
| #if defined(__i386__) && (defined(__PIC__) || defined(__PIE__)) && !(defined(__clang__) || (defined(BOOST_GCC) && (BOOST_GCC+0) >= 50100)) |
| // This macro indicates that asm blocks should preserve ebx value unchanged. Some compilers are able to maintain ebx themselves |
| // around the asm blocks. For those compilers we don't need to save/restore ebx in asm blocks. |
| #define BOOST_ATOMIC_DETAIL_X86_ASM_PRESERVE_EBX |
| #endif |
| |
| #if defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS) |
| #if !(defined(BOOST_LIBSTDCXX11) && (BOOST_LIBSTDCXX_VERSION+0) >= 40700) /* libstdc++ from gcc >= 4.7 in C++11 mode */ |
| // This macro indicates that there is not even a basic <type_traits> standard header that is sufficient for most Boost.Atomic needs. |
| #define BOOST_ATOMIC_DETAIL_NO_CXX11_BASIC_HDR_TYPE_TRAITS |
| #endif |
| #endif // defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS) |
| |
| #if defined(BOOST_NO_CXX11_ALIGNAS) ||\ |
| (defined(BOOST_GCC) && (BOOST_GCC+0) < 40900) ||\ |
| (defined(BOOST_MSVC) && (BOOST_MSVC+0) < 1910 && defined(_M_IX86)) |
| // gcc prior to 4.9 doesn't support alignas with a constant expression as an argument. |
| // MSVC 14.0 does support alignas, but in 32-bit mode emits "error C2719: formal parameter with requested alignment of N won't be aligned" for N > 4, |
| // when aligned types are used in function arguments, even though the std::max_align_t type has alignment of 8. |
| #define BOOST_ATOMIC_DETAIL_NO_CXX11_ALIGNAS |
| #endif |
| |
| #if defined(BOOST_NO_CXX11_CONSTEXPR) || (defined(BOOST_GCC) && (BOOST_GCC+0) < 40800) |
| // This macro indicates that the compiler doesn't support constexpr constructors that initialize one member |
| // of an anonymous union member of the class. |
| #define BOOST_ATOMIC_DETAIL_NO_CXX11_CONSTEXPR_UNION_INIT |
| #endif |
| |
| #if !defined(BOOST_ATOMIC_DETAIL_NO_CXX11_CONSTEXPR_UNION_INIT) |
| #define BOOST_ATOMIC_DETAIL_CONSTEXPR_UNION_INIT BOOST_CONSTEXPR |
| #else |
| #define BOOST_ATOMIC_DETAIL_CONSTEXPR_UNION_INIT |
| #endif |
| |
| // Enable pointer/reference casts between storage and value when possible. |
| // Note: Despite that MSVC does not employ strict aliasing rules for optimizations |
| // and does not require an explicit markup for types that may alias, we still don't |
| // enable the optimization for this compiler because at least MSVC-8 and 9 are known |
| // to generate broken code sometimes when casts are used. |
| #define BOOST_ATOMIC_DETAIL_MAY_ALIAS BOOST_MAY_ALIAS |
| #if !defined(BOOST_NO_MAY_ALIAS) |
| #define BOOST_ATOMIC_DETAIL_STORAGE_TYPE_MAY_ALIAS |
| #endif |
| |
| #if defined(__GCC_ASM_FLAG_OUTPUTS__) |
| // The compiler supports output values in flag registers. |
| // See: https://gcc.gnu.org/onlinedocs/gcc/Extended-Asm.html, Section 6.44.3. |
| #define BOOST_ATOMIC_DETAIL_ASM_HAS_FLAG_OUTPUTS |
| #endif |
| |
| #if defined(BOOST_INTEL) || (defined(BOOST_GCC) && (BOOST_GCC+0) < 40700) ||\ |
| (defined(BOOST_CLANG) && !defined(__apple_build_version__) && ((__clang_major__+0) * 100 + (__clang_minor__+0)) < 302) ||\ |
| (defined(__clang__) && defined(__apple_build_version__) && ((__clang_major__+0) * 100 + (__clang_minor__+0)) < 402) |
| // Intel compiler (at least 18.0 update 1) breaks if noexcept specification is used in defaulted function declarations: |
| // error: the default constructor of "boost::atomics::atomic<T>" cannot be referenced -- it is a deleted function |
| // GCC 4.6 doesn't seem to support that either. Clang 3.1 deduces wrong noexcept for the defaulted function and fails as well. |
| #define BOOST_ATOMIC_DETAIL_DEF_NOEXCEPT_DECL |
| #define BOOST_ATOMIC_DETAIL_DEF_NOEXCEPT_IMPL BOOST_NOEXCEPT |
| #else |
| #define BOOST_ATOMIC_DETAIL_DEF_NOEXCEPT_DECL BOOST_NOEXCEPT |
| #define BOOST_ATOMIC_DETAIL_DEF_NOEXCEPT_IMPL |
| #endif |
| |
| #if defined(__has_builtin) |
| #if __has_builtin(__builtin_constant_p) |
| #define BOOST_ATOMIC_DETAIL_IS_CONSTANT(x) __builtin_constant_p(x) |
| #endif |
| #elif defined(__GNUC__) |
| #define BOOST_ATOMIC_DETAIL_IS_CONSTANT(x) __builtin_constant_p(x) |
| #endif |
| |
| #if !defined(BOOST_ATOMIC_DETAIL_IS_CONSTANT) |
| #define BOOST_ATOMIC_DETAIL_IS_CONSTANT(x) false |
| #endif |
| |
| #if (defined(__BYTE_ORDER__) && defined(__FLOAT_WORD_ORDER__) && (__BYTE_ORDER__+0) == (__FLOAT_WORD_ORDER__+0)) ||\ |
| defined(__i386__) || defined(__x86_64__) || defined(_M_IX86) || defined(_M_X64) |
| // This macro indicates that integer and floating point endianness is the same |
| #define BOOST_ATOMIC_DETAIL_INT_FP_ENDIAN_MATCH |
| #endif |
| |
| // Deprecated symbols markup |
| #if !defined(BOOST_ATOMIC_DETAIL_DEPRECATED) && defined(_MSC_VER) |
| #if (_MSC_VER) >= 1400 |
| #define BOOST_ATOMIC_DETAIL_DEPRECATED(msg) __declspec(deprecated(msg)) |
| #else |
| // MSVC 7.1 only supports the attribute without a message |
| #define BOOST_ATOMIC_DETAIL_DEPRECATED(msg) __declspec(deprecated) |
| #endif |
| #endif |
| |
| #if !defined(BOOST_ATOMIC_DETAIL_DEPRECATED) && defined(__has_extension) |
| #if __has_extension(attribute_deprecated_with_message) |
| #define BOOST_ATOMIC_DETAIL_DEPRECATED(msg) __attribute__((deprecated(msg))) |
| #endif |
| #endif |
| |
| // gcc since 4.5 supports deprecated attribute with a message; older versions support the attribute without a message. |
| // Oracle Studio 12.4 supports deprecated attribute with a message; this is the first release that supports the attribute. |
| #if !defined(BOOST_ATOMIC_DETAIL_DEPRECATED) && (\ |
| (defined(__GNUC__) && ((__GNUC__ + 0) * 100 + (__GNUC_MINOR__ + 0)) >= 405) ||\ |
| (defined(__SUNPRO_CC) && (__SUNPRO_CC + 0) >= 0x5130)) |
| #define BOOST_ATOMIC_DETAIL_DEPRECATED(msg) __attribute__((deprecated(msg))) |
| #endif |
| |
| #if !defined(BOOST_ATOMIC_DETAIL_DEPRECATED) && __cplusplus >= 201402 |
| #define BOOST_ATOMIC_DETAIL_DEPRECATED(msg) [[deprecated(msg)]] |
| #endif |
| |
| #if !defined(BOOST_ATOMIC_DETAIL_DEPRECATED) && defined(__GNUC__) |
| #define BOOST_ATOMIC_DETAIL_DEPRECATED(msg) __attribute__((deprecated)) |
| #endif |
| |
| #if !defined(BOOST_ATOMIC_DETAIL_DEPRECATED) && defined(__has_attribute) |
| #if __has_attribute(deprecated) |
| #define BOOST_ATOMIC_DETAIL_DEPRECATED(msg) __attribute__((deprecated)) |
| #endif |
| #endif |
| |
| #if !defined(BOOST_ATOMIC_DETAIL_DEPRECATED) |
| #define BOOST_ATOMIC_DETAIL_DEPRECATED(msg) |
| #endif |
| |
| // In Boost.Atomic 1.73 we deprecated atomic<>::storage() accessor in favor of atomic<>::value(). In future releases storage() will be removed. |
| #if !defined(BOOST_ATOMIC_SILENCE_STORAGE_DEPRECATION) |
| #define BOOST_ATOMIC_DETAIL_STORAGE_DEPRECATED BOOST_ATOMIC_DETAIL_DEPRECATED("Boost.Atomic 1.73 has deprecated atomic<>::storage() in favor of atomic<>::value() and atomic<>::storage_type in favor of atomic<>::value_type. You can define BOOST_ATOMIC_SILENCE_STORAGE_DEPRECATION to disable this warning.") |
| #else |
| #define BOOST_ATOMIC_DETAIL_STORAGE_DEPRECATED |
| #endif |
| |
| #endif // BOOST_ATOMIC_DETAIL_CONFIG_HPP_INCLUDED_ |