143 lines
3.6 KiB
C++
143 lines
3.6 KiB
C++
// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// (C) Copyright 2011 Vicente J. Botet Escriba
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#ifndef BOOST_THREAD_V2_THREAD_HPP
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#define BOOST_THREAD_V2_THREAD_HPP
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#include <boost/thread/detail/config.hpp>
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#ifdef BOOST_THREAD_USES_CHRONO
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#include <boost/chrono/system_clocks.hpp>
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#include <boost/chrono/ceil.hpp>
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#endif
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#include <boost/thread/condition_variable.hpp>
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#include <boost/thread/lock_types.hpp>
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namespace boost
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{
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namespace this_thread
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{
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namespace no_interruption_point
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{
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#ifdef BOOST_THREAD_USES_CHRONO
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template <class Clock, class Duration>
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void sleep_until(const chrono::time_point<Clock, Duration>& t)
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{
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using namespace chrono;
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mutex mut;
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condition_variable cv;
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unique_lock<mutex> lk(mut);
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while (Clock::now() < t)
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cv.wait_until(lk, t);
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}
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#ifdef BOOST_THREAD_SLEEP_FOR_IS_STEADY
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template <class Rep, class Period>
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void sleep_for(const chrono::duration<Rep, Period>& d)
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{
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using namespace chrono;
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if (d > duration<Rep, Period>::zero())
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{
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duration<long double> Max = nanoseconds::max BOOST_PREVENT_MACRO_SUBSTITUTION ();
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nanoseconds ns;
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if (d < Max)
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{
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ns = duration_cast<nanoseconds>(d);
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if (ns < d)
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++ns;
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}
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else
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ns = nanoseconds:: max BOOST_PREVENT_MACRO_SUBSTITUTION ();
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sleep_for(ns);
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}
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}
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template <class Duration>
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inline BOOST_SYMBOL_VISIBLE
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void sleep_until(const chrono::time_point<chrono::steady_clock, Duration>& t)
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{
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using namespace chrono;
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sleep_for(t - steady_clock::now());
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}
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#else
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template <class Rep, class Period>
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void sleep_for(const chrono::duration<Rep, Period>& d)
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{
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using namespace chrono;
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if (d > duration<Rep, Period>::zero())
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{
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steady_clock::time_point c_timeout = steady_clock::now() + ceil<nanoseconds>(d);
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sleep_until(c_timeout);
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}
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}
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#endif
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#endif
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}
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#ifdef BOOST_THREAD_USES_CHRONO
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template <class Clock, class Duration>
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void sleep_until(const chrono::time_point<Clock, Duration>& t)
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{
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using namespace chrono;
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mutex mut;
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condition_variable cv;
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unique_lock<mutex> lk(mut);
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while (Clock::now() < t)
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cv.wait_until(lk, t);
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}
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#ifdef BOOST_THREAD_SLEEP_FOR_IS_STEADY
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template <class Rep, class Period>
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void sleep_for(const chrono::duration<Rep, Period>& d)
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{
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using namespace chrono;
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if (d > duration<Rep, Period>::zero())
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{
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duration<long double> Max = nanoseconds::max BOOST_PREVENT_MACRO_SUBSTITUTION ();
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nanoseconds ns;
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if (d < Max)
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{
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ns = duration_cast<nanoseconds>(d);
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if (ns < d)
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++ns;
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}
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else
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ns = nanoseconds:: max BOOST_PREVENT_MACRO_SUBSTITUTION ();
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sleep_for(ns);
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}
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}
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template <class Duration>
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inline BOOST_SYMBOL_VISIBLE
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void sleep_until(const chrono::time_point<chrono::steady_clock, Duration>& t)
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{
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using namespace chrono;
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sleep_for(t - steady_clock::now());
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}
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#else
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template <class Rep, class Period>
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void sleep_for(const chrono::duration<Rep, Period>& d)
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{
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using namespace chrono;
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if (d > duration<Rep, Period>::zero())
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{
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steady_clock::time_point c_timeout = steady_clock::now() + ceil<nanoseconds>(d);
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sleep_until(c_timeout);
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}
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}
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#endif
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#endif
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}
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}
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#endif
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