projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | /* |
| 2 | * Distributed under the Boost Software License, Version 1.0. | |
| 3 | * (See accompanying file LICENSE_1_0.txt or copy at | |
| 4 | * http://www.boost.org/LICENSE_1_0.txt) | |
| 5 | * | |
| 6 | * (C) Copyright 2013 Tim Blechmann | |
| 7 | * (C) Copyright 2013 Andrey Semashev | |
| 8 | */ | |
| 9 | ||
| 10 | #ifndef BOOST_ATOMIC_DETAIL_PAUSE_HPP_INCLUDED_ | |
| 11 | #define BOOST_ATOMIC_DETAIL_PAUSE_HPP_INCLUDED_ | |
| 12 | ||
| 13 | #include <boost/atomic/detail/config.hpp> | |
| 14 | ||
| 15 | #ifdef BOOST_HAS_PRAGMA_ONCE | |
| 16 | #pragma once | |
| 17 | #endif | |
| 18 | ||
| 19 | #if defined(_MSC_VER) && (defined(_M_AMD64) || defined(_M_IX86)) | |
| 20 | extern "C" void _mm_pause(void); | |
| 21 | #if defined(BOOST_MSVC) | |
| 22 | #pragma intrinsic(_mm_pause) | |
| 23 | #endif | |
| 24 | #endif | |
| 25 | ||
| 26 | namespace boost { | |
| 27 | namespace atomics { | |
| 28 | namespace detail { | |
| 29 | ||
| 30 | BOOST_FORCEINLINE void pause() BOOST_NOEXCEPT | |
| 31 | { | |
| 32 | #if defined(_MSC_VER) && (defined(_M_AMD64) || defined(_M_IX86)) | |
| 33 | _mm_pause(); | |
| 34 | #elif defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__)) | |
| 35 | __asm__ __volatile__("pause;"); | |
| 36 | #endif | |
| 37 | } | |
| 38 | ||
| 39 | } // namespace detail | |
| 40 | } // namespace atomics | |
| 41 | } // namespace boost | |
| 42 | ||
| 43 | #endif // BOOST_ATOMIC_DETAIL_PAUSE_HPP_INCLUDED_ |