12345678910111213141516171819202122232425262728293031323334353637383940414243 |
- /*
- * 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)
- *
- * (C) Copyright 2013 Tim Blechmann
- * (C) Copyright 2013 Andrey Semashev
- */
- #ifndef BOOST_ATOMIC_DETAIL_PAUSE_HPP_INCLUDED_
- #define BOOST_ATOMIC_DETAIL_PAUSE_HPP_INCLUDED_
- #include <boost/atomic/detail/config.hpp>
- #ifdef BOOST_HAS_PRAGMA_ONCE
- #pragma once
- #endif
- #if defined(_MSC_VER) && (defined(_M_AMD64) || defined(_M_IX86))
- extern "C" void _mm_pause(void);
- #if defined(BOOST_MSVC)
- #pragma intrinsic(_mm_pause)
- #endif
- #endif
- namespace boost {
- namespace atomics {
- namespace detail {
- BOOST_FORCEINLINE void pause() BOOST_NOEXCEPT
- {
- #if defined(_MSC_VER) && (defined(_M_AMD64) || defined(_M_IX86))
- _mm_pause();
- #elif defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
- __asm__ __volatile__("pause;");
- #endif
- }
- } // namespace detail
- } // namespace atomics
- } // namespace boost
- #endif // BOOST_ATOMIC_DETAIL_PAUSE_HPP_INCLUDED_
|