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Contents
#ifndef BOOST_SMART_PTR_DETAIL_YIELD_K_HPP_INCLUDED
#define BOOST_SMART_PTR_DETAIL_YIELD_K_HPP_INCLUDED
// MS compatible compilers support #pragma once
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
// boost/smart_ptr/detail/yield_k.hpp
//
// Copyright 2008, 2020 Peter Dimov
//
// inline void boost::detail::yield( unsigned k );
//
// Typical use:
// for( unsigned k = 0; !try_lock(); ++k ) yield( k );
//
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/smart_ptr/detail/sp_thread_pause.hpp>
#include <boost/smart_ptr/detail/sp_thread_sleep.hpp>
#include <boost/config.hpp>
namespace boost
{
namespace detail
{
inline void yield( unsigned k )
{
// Experiments on Windows and Fedora 32 show that a single pause,
// followed by an immediate sp_thread_sleep(), is best.
if( k == 0 )
{
sp_thread_pause();
}
else
{
sp_thread_sleep();
}
}
} // namespace detail
} // namespace boost
#endif // #ifndef BOOST_SMART_PTR_DETAIL_YIELD_K_HPP_INCLUDED
Version data entries
12 entries across 12 versions & 1 rubygems