101 lines
1.8 KiB
C++
101 lines
1.8 KiB
C++
#ifndef BOOST_SMART_PTR_DETAIL_SP_THREAD_YIELD_HPP_INCLUDED
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#define BOOST_SMART_PTR_DETAIL_SP_THREAD_YIELD_HPP_INCLUDED
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// MS compatible compilers support #pragma once
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#if defined(_MSC_VER) && (_MSC_VER >= 1020)
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# pragma once
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#endif
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// boost/smart_ptr/detail/sp_thread_yield.hpp
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//
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// inline void bost::detail::sp_thread_yield();
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//
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// Gives up the remainder of the time slice,
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// as if by calling sched_yield().
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//
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// Copyright 2008, 2020 Peter Dimov
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// Distributed under the Boost Software License, Version 1.0
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// https://www.boost.org/LICENSE_1_0.txt
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#include <boost/config.hpp>
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#include <boost/config/pragma_message.hpp>
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#if defined( WIN32 ) || defined( _WIN32 ) || defined( __WIN32__ ) || defined( __CYGWIN__ )
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#if defined(BOOST_SP_REPORT_IMPLEMENTATION)
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BOOST_PRAGMA_MESSAGE("Using Sleep(0) in sp_thread_yield")
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#endif
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#include <boost/smart_ptr/detail/sp_win32_sleep.hpp>
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namespace boost
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{
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namespace detail
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{
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inline void sp_thread_yield()
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{
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Sleep( 0 );
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}
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} // namespace detail
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} // namespace boost
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#elif defined(BOOST_HAS_SCHED_YIELD)
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#if defined(BOOST_SP_REPORT_IMPLEMENTATION)
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BOOST_PRAGMA_MESSAGE("Using sched_yield() in sp_thread_yield")
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#endif
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#ifndef _AIX
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# include <sched.h>
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#else
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// AIX's sched.h defines ::var which sometimes conflicts with Lambda's var
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extern "C" int sched_yield(void);
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#endif
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namespace boost
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{
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namespace detail
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{
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inline void sp_thread_yield()
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{
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sched_yield();
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}
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} // namespace detail
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} // namespace boost
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#else
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#if defined(BOOST_SP_REPORT_IMPLEMENTATION)
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BOOST_PRAGMA_MESSAGE("Using sp_thread_pause() in sp_thread_yield")
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#endif
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#include <boost/smart_ptr/detail/sp_thread_pause.hpp>
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namespace boost
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{
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namespace detail
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{
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inline void sp_thread_yield()
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{
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sp_thread_pause();
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}
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} // namespace detail
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} // namespace boost
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#endif
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#endif // #ifndef BOOST_SMART_PTR_DETAIL_SP_THREAD_YIELD_HPP_INCLUDED
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