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105 lines
2.0 KiB
105 lines
2.0 KiB
3 years ago
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#ifndef BOOST_SMART_PTR_DETAIL_SP_THREAD_SLEEP_HPP_INCLUDED
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#define BOOST_SMART_PTR_DETAIL_SP_THREAD_SLEEP_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_sleep.hpp
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//
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// inline void bost::detail::sp_thread_sleep();
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//
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// Cease execution for a while to yield to other threads,
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// as if by calling nanosleep() with an appropriate interval.
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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(1) in sp_thread_sleep")
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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_sleep()
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{
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Sleep( 1 );
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}
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} // namespace detail
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} // namespace boost
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#elif defined(BOOST_HAS_NANOSLEEP)
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#if defined(BOOST_SP_REPORT_IMPLEMENTATION)
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BOOST_PRAGMA_MESSAGE("Using nanosleep() in sp_thread_sleep")
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#endif
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#include <time.h>
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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_sleep()
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{
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// g++ -Wextra warns on {} or {0}
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struct timespec rqtp = { 0, 0 };
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// POSIX says that timespec has tv_sec and tv_nsec
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// But it doesn't guarantee order or placement
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rqtp.tv_sec = 0;
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rqtp.tv_nsec = 1000;
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nanosleep( &rqtp, 0 );
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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_yield() in sp_thread_sleep")
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#endif
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#include <boost/smart_ptr/detail/sp_thread_yield.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_sleep()
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{
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sp_thread_yield();
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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_SLEEP_HPP_INCLUDED
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