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Update sp_thread_pause.hpp

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This commit is contained in:
Peter Dimov 2023-06-02 02:05:36 +03:00
parent 992326b1c8
commit 57151ab82e
1 changed files with 26 additions and 8 deletions
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34
include/boost/core/detail/sp_thread_pause.hpp
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@ -13,23 +13,41 @@
//
// Emits a "pause" instruction.
//
// Copyright 2008, 2020 Peter Dimov
// Copyright 2008, 2020, 2023 Peter Dimov
// Distributed under the Boost Software License, Version 1.0
// https://www.boost.org/LICENSE_1_0.txt
#if defined(_MSC_VER) && _MSC_VER >= 1310 && ( defined(_M_IX86) || defined(_M_X64) ) && !defined(__c2__)
#if defined(__has_builtin)
# if __has_builtin(__builtin_ia32_pause) && !defined(_INTEL_COMPILER)
# define BOOST_CORE_HAS_BUILTIN_IA32_PAUSE
# endif
#endif
extern "C" void _mm_pause();
#if defined(BOOST_CORE_HAS_BUILTIN_IA32_PAUSE)
#define BOOST_CORE_SP_PAUSE _mm_pause();
# define BOOST_CORE_SP_PAUSE() __builtin_ia32_pause()
#elif defined(_MSC_VER) && ( defined(_M_IX86) || defined(_M_X64) )
# include <intrin.h>
# define BOOST_CORE_SP_PAUSE() _mm_pause()
#elif defined(_MSC_VER) && ( defined(_M_ARM) || defined(_M_ARM64) )
# include <intrin.h>
# define BOOST_CORE_SP_PAUSE() __yield()
#elif defined(__GNUC__) && ( defined(__i386__) || defined(__x86_64__) )
#define BOOST_CORE_SP_PAUSE __asm__ __volatile__( "rep; nop" : : : "memory" );
# define BOOST_CORE_SP_PAUSE() __asm__ __volatile__( "rep; nop" : : : "memory" )
#elif defined(__GNUC__) && ( (defined(__ARM_ARCH) && __ARM_ARCH >= 8) || defined(__ARM_ARCH_8A__) || defined(__aarch64__) )
# define BOOST_CORE_SP_PAUSE() __asm__ __volatile__( "yield" : : : "memory" )
#else
#define BOOST_CORE_SP_PAUSE
# define BOOST_CORE_SP_PAUSE() ((void)0)
#endif
@ -40,12 +58,12 @@ namespace core
inline void sp_thread_pause()
{
BOOST_CORE_SP_PAUSE
BOOST_CORE_SP_PAUSE();
}
} // namespace core
} // namespace boost
#undef BOOST_SP_PAUSE
#undef BOOST_CORE_SP_PAUSE
#endif // #ifndef BOOST_CORE_DETAIL_SP_THREAD_PAUSE_HPP_INCLUDED