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// 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 2011 Vicente J. Botet Escriba
#ifndef BOOST_THREAD_V2_THREAD_HPP
#define BOOST_THREAD_V2_THREAD_HPP
#include <boost/thread/detail/config.hpp>
#ifdef BOOST_THREAD_USES_CHRONO
#include <boost/chrono/system_clocks.hpp>
#include <boost/chrono/ceil.hpp>
#endif
#include <boost/thread/condition_variable.hpp>
#include <boost/thread/lock_types.hpp>
namespace boost
{
namespace this_thread
{
namespace no_interruption_point
{
#ifdef BOOST_THREAD_USES_CHRONO
template <class Clock, class Duration>
void sleep_until(const chrono::time_point<Clock, Duration>& t)
{
using namespace chrono;
mutex mut;
condition_variable cv;
unique_lock<mutex> lk(mut);
while (Clock::now() < t)
cv.wait_until(lk, t);
}
#ifdef BOOST_THREAD_SLEEP_FOR_IS_STEADY
template <class Rep, class Period>
void sleep_for(const chrono::duration<Rep, Period>& d)
{
using namespace chrono;
if (d > duration<Rep, Period>::zero())
{
duration<long double> Max = nanoseconds::max BOOST_PREVENT_MACRO_SUBSTITUTION ();
nanoseconds ns;
if (d < Max)
{
ns = duration_cast<nanoseconds>(d);
if (ns < d)
++ns;
}
else
ns = nanoseconds:: max BOOST_PREVENT_MACRO_SUBSTITUTION ();
sleep_for(ns);
}
}
template <class Duration>
inline BOOST_SYMBOL_VISIBLE
void sleep_until(const chrono::time_point<chrono::steady_clock, Duration>& t)
{
using namespace chrono;
sleep_for(t - steady_clock::now());
}
#else
template <class Rep, class Period>
void sleep_for(const chrono::duration<Rep, Period>& d)
{
using namespace chrono;
if (d > duration<Rep, Period>::zero())
{
steady_clock::time_point c_timeout = steady_clock::now() + ceil<nanoseconds>(d);
sleep_until(c_timeout);
}
}
#endif
#endif
}
#ifdef BOOST_THREAD_USES_CHRONO
template <class Clock, class Duration>
void sleep_until(const chrono::time_point<Clock, Duration>& t)
{
using namespace chrono;
mutex mut;
condition_variable cv;
unique_lock<mutex> lk(mut);
while (Clock::now() < t)
cv.wait_until(lk, t);
}
#ifdef BOOST_THREAD_SLEEP_FOR_IS_STEADY
template <class Rep, class Period>
void sleep_for(const chrono::duration<Rep, Period>& d)
{
using namespace chrono;
if (d > duration<Rep, Period>::zero())
{
duration<long double> Max = nanoseconds::max BOOST_PREVENT_MACRO_SUBSTITUTION ();
nanoseconds ns;
if (d < Max)
{
ns = duration_cast<nanoseconds>(d);
if (ns < d)
++ns;
}
else
ns = nanoseconds:: max BOOST_PREVENT_MACRO_SUBSTITUTION ();
sleep_for(ns);
}
}
template <class Duration>
inline BOOST_SYMBOL_VISIBLE
void sleep_until(const chrono::time_point<chrono::steady_clock, Duration>& t)
{
using namespace chrono;
sleep_for(t - steady_clock::now());
}
#else
template <class Rep, class Period>
void sleep_for(const chrono::duration<Rep, Period>& d)
{
using namespace chrono;
if (d > duration<Rep, Period>::zero())
{
steady_clock::time_point c_timeout = steady_clock::now() + ceil<nanoseconds>(d);
sleep_until(c_timeout);
}
}
#endif
#endif
}
}
#endif
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