Chris@16: #ifndef BOOST_THREAD_PTHREAD_TIMESPEC_HPP
Chris@16: #define BOOST_THREAD_PTHREAD_TIMESPEC_HPP
Chris@16: //  (C) Copyright 2007-8 Anthony Williams
Chris@16: //  (C) Copyright 2012 Vicente J. Botet Escriba
Chris@16: //
Chris@16: //  Distributed under the Boost Software License, Version 1.0. (See
Chris@16: //  accompanying file LICENSE_1_0.txt or copy at
Chris@16: //  http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16: #include <boost/thread/detail/config.hpp>
Chris@16: #include <boost/thread/thread_time.hpp>
Chris@16: #if defined BOOST_THREAD_USES_DATETIME
Chris@16: #include <boost/date_time/posix_time/conversion.hpp>
Chris@16: #endif
Chris@16: #include <pthread.h>
Chris@16: #ifndef _WIN32
Chris@16: #include <unistd.h>
Chris@16: #endif
Chris@16: #ifdef BOOST_THREAD_USES_CHRONO
Chris@16: #include <boost/chrono/duration.hpp>
Chris@16: #endif
Chris@16: 
Chris@16: #if defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__)
Chris@16: #     define BOOST_THREAD_TIMESPEC_MAC_API
Chris@16: #include <sys/time.h> //for gettimeofday and timeval
Chris@16: #else
Chris@16: #include <time.h>  // for clock_gettime
Chris@16: #endif
Chris@16: 
Chris@16: #include <boost/config/abi_prefix.hpp>
Chris@16: 
Chris@16: namespace boost
Chris@16: {
Chris@16:   namespace detail
Chris@16:   {
Chris@16: #if defined BOOST_THREAD_USES_DATETIME
Chris@16:     inline struct timespec to_timespec(boost::system_time const& abs_time)
Chris@16:     {
Chris@16:       struct timespec timeout = { 0,0};
Chris@16:       boost::posix_time::time_duration const time_since_epoch=abs_time-boost::posix_time::from_time_t(0);
Chris@16: 
Chris@16:       timeout.tv_sec=time_since_epoch.total_seconds();
Chris@16:       timeout.tv_nsec=(long)(time_since_epoch.fractional_seconds()*(1000000000l/time_since_epoch.ticks_per_second()));
Chris@16:       return timeout;
Chris@16:     }
Chris@16: #endif
Chris@16: #if defined BOOST_THREAD_USES_CHRONO
Chris@16:     inline timespec to_timespec(chrono::nanoseconds const& ns)
Chris@16:     {
Chris@16:       struct timespec ts;
Chris@16:       ts.tv_sec = static_cast<long>(chrono::duration_cast<chrono::seconds>(ns).count());
Chris@16:       ts.tv_nsec = static_cast<long>((ns - chrono::duration_cast<chrono::seconds>(ns)).count());
Chris@16:       return ts;
Chris@16:     }
Chris@16: 
Chris@16: #endif
Chris@16: 
Chris@16:     inline timespec to_timespec(boost::intmax_t const& ns)
Chris@16:     {
Chris@16:       boost::intmax_t s = ns / 1000000000l;
Chris@16:       struct timespec ts;
Chris@16:       ts.tv_sec = static_cast<long> (s);
Chris@16:       ts.tv_nsec = static_cast<long> (ns - s * 1000000000l);
Chris@16:       return ts;
Chris@16:     }
Chris@16:     inline boost::intmax_t to_nanoseconds_int_max(timespec const& ts)
Chris@16:     {
Chris@16:       return static_cast<boost::intmax_t>(ts.tv_sec) * 1000000000l + ts.tv_nsec;
Chris@16:     }
Chris@16:     inline bool timespec_ge_zero(timespec const& ts)
Chris@16:     {
Chris@16:       return (ts.tv_sec >= 0) || (ts.tv_nsec >= 0);
Chris@16:     }
Chris@16:     inline timespec timespec_now()
Chris@16:     {
Chris@16:       timespec ts;
Chris@16: 
Chris@16: #if defined(BOOST_THREAD_TIMESPEC_MAC_API)
Chris@16:       timeval tv;
Chris@16:       ::gettimeofday(&tv, 0);
Chris@16:       ts.tv_sec = tv.tv_sec;
Chris@16:       ts.tv_nsec = tv.tv_usec * 1000;
Chris@16: #else
Chris@16:       if ( ::clock_gettime( CLOCK_REALTIME, &ts ) )
Chris@16:       {
Chris@16:         BOOST_ASSERT(0 && "Boost::Thread - Internal Error");
Chris@16:       }
Chris@16: #endif
Chris@16:       return ts;
Chris@16:     }
Chris@16:     inline timespec timespec_zero()
Chris@16:     {
Chris@16:       timespec ts;
Chris@16:       ts.tv_sec = 0;
Chris@16:       ts.tv_nsec = 0;
Chris@16:       return ts;
Chris@16:     }
Chris@16:     inline timespec timespec_plus(timespec const& lhs, timespec const& rhs)
Chris@16:     {
Chris@16:       return to_timespec(to_nanoseconds_int_max(lhs) + to_nanoseconds_int_max(rhs));
Chris@16:     }
Chris@16:     inline timespec timespec_minus(timespec const& lhs, timespec const& rhs)
Chris@16:     {
Chris@16:       return to_timespec(to_nanoseconds_int_max(lhs) - to_nanoseconds_int_max(rhs));
Chris@16:     }
Chris@16:     inline bool timespec_gt(timespec const& lhs, timespec const& rhs)
Chris@16:     {
Chris@16:       return to_nanoseconds_int_max(lhs) > to_nanoseconds_int_max(rhs);
Chris@16:     }
Chris@16:     inline bool timespec_ge(timespec const& lhs, timespec const& rhs)
Chris@16:     {
Chris@16:       return to_nanoseconds_int_max(lhs) >= to_nanoseconds_int_max(rhs);
Chris@16:     }
Chris@16: 
Chris@16:   }
Chris@16: }
Chris@16: 
Chris@16: #include <boost/config/abi_suffix.hpp>
Chris@16: 
Chris@16: #endif