121 lines
3.6 KiB
C++
121 lines
3.6 KiB
C++
#ifndef BOOST_THREAD_PTHREAD_TIMESPEC_HPP
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#define BOOST_THREAD_PTHREAD_TIMESPEC_HPP
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// (C) Copyright 2007-8 Anthony Williams
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// (C) Copyright 2012 Vicente J. Botet Escriba
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//
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// 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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#include <boost/thread/detail/config.hpp>
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#include <boost/thread/thread_time.hpp>
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#if defined BOOST_THREAD_USES_DATETIME
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#include <boost/date_time/posix_time/conversion.hpp>
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#endif
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#include <pthread.h>
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#ifndef _WIN32
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#include <unistd.h>
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#endif
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#ifdef BOOST_THREAD_USES_CHRONO
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#include <boost/chrono/duration.hpp>
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#endif
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#if defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__)
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# define BOOST_THREAD_TIMESPEC_MAC_API
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#include <sys/time.h> //for gettimeofday and timeval
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#else
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#include <time.h> // for clock_gettime
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#endif
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#include <boost/config/abi_prefix.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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#if defined BOOST_THREAD_USES_DATETIME
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inline struct timespec to_timespec(boost::system_time const& abs_time)
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{
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struct timespec timeout = { 0,0};
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boost::posix_time::time_duration const time_since_epoch=abs_time-boost::posix_time::from_time_t(0);
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timeout.tv_sec=time_since_epoch.total_seconds();
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timeout.tv_nsec=(long)(time_since_epoch.fractional_seconds()*(1000000000l/time_since_epoch.ticks_per_second()));
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return timeout;
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}
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#endif
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#if defined BOOST_THREAD_USES_CHRONO
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inline timespec to_timespec(chrono::nanoseconds const& ns)
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{
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struct timespec ts;
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ts.tv_sec = static_cast<long>(chrono::duration_cast<chrono::seconds>(ns).count());
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ts.tv_nsec = static_cast<long>((ns - chrono::duration_cast<chrono::seconds>(ns)).count());
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return ts;
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}
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#endif
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inline timespec to_timespec(boost::intmax_t const& ns)
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{
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boost::intmax_t s = ns / 1000000000l;
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struct timespec ts;
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ts.tv_sec = static_cast<long> (s);
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ts.tv_nsec = static_cast<long> (ns - s * 1000000000l);
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return ts;
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}
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inline boost::intmax_t to_nanoseconds_int_max(timespec const& ts)
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{
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return static_cast<boost::intmax_t>(ts.tv_sec) * 1000000000l + ts.tv_nsec;
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}
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inline bool timespec_ge_zero(timespec const& ts)
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{
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return (ts.tv_sec >= 0) || (ts.tv_nsec >= 0);
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}
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inline timespec timespec_now()
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{
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timespec ts;
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#if defined(BOOST_THREAD_TIMESPEC_MAC_API)
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timeval tv;
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::gettimeofday(&tv, 0);
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ts.tv_sec = tv.tv_sec;
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ts.tv_nsec = tv.tv_usec * 1000;
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#else
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if ( ::clock_gettime( CLOCK_REALTIME, &ts ) )
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{
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BOOST_ASSERT(0 && "Boost::Thread - Internal Error");
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}
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#endif
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return ts;
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}
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inline timespec timespec_zero()
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{
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timespec ts;
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ts.tv_sec = 0;
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ts.tv_nsec = 0;
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return ts;
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}
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inline timespec timespec_plus(timespec const& lhs, timespec const& rhs)
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{
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return to_timespec(to_nanoseconds_int_max(lhs) + to_nanoseconds_int_max(rhs));
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}
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inline timespec timespec_minus(timespec const& lhs, timespec const& rhs)
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{
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return to_timespec(to_nanoseconds_int_max(lhs) - to_nanoseconds_int_max(rhs));
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}
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inline bool timespec_gt(timespec const& lhs, timespec const& rhs)
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{
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return to_nanoseconds_int_max(lhs) > to_nanoseconds_int_max(rhs);
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}
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inline bool timespec_ge(timespec const& lhs, timespec const& rhs)
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{
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return to_nanoseconds_int_max(lhs) >= to_nanoseconds_int_max(rhs);
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}
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}
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}
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#include <boost/config/abi_suffix.hpp>
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#endif
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