| /* |
| * 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 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) |
| |
| // 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(__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 1.67 we changed (op)_and_test methods to return true when the result is non-zero. This would be more consistent |
| // with the other names used in Boost.Atomic and the C++ standard library. Since the methods were announced as experimental and |
| // the previous behavior was released only in Boost 1.66, it was decided to change the result without changing the method names. |
| // By defining BOOST_ATOMIC_HIGHLIGHT_OP_AND_TEST the user has a way to highlight all uses of the affected functions so |
| // that it is easier to find and update the affected code (which is typically adding or removing negation of the result). This |
| // highlighting functionality is a temporary measure to help users upgrade from Boost 1.66 to newer Boost versions. It will |
| // be removed eventually. |
| // |
| // More info at: |
| // https://github.com/boostorg/atomic/issues/11 |
| // http://boost.2283326.n4.nabble.com/atomic-op-and-test-naming-tc4701445.html |
| #if defined(BOOST_ATOMIC_HIGHLIGHT_OP_AND_TEST) |
| #define BOOST_ATOMIC_DETAIL_HIGHLIGHT_OP_AND_TEST BOOST_ATOMIC_DETAIL_DEPRECATED("Boost.Atomic 1.67 has changed (op)_and_test result to the opposite. The functions now return true when the result is non-zero. Please, verify your use of the operation and undefine BOOST_ATOMIC_HIGHLIGHT_OP_AND_TEST.") |
| #else |
| #define BOOST_ATOMIC_DETAIL_HIGHLIGHT_OP_AND_TEST |
| #endif |
| |
| #endif // BOOST_ATOMIC_DETAIL_CONFIG_HPP_INCLUDED_ |