void thread::sleep(const xtime& xt) { for (int foo=0; foo < 5; ++foo) { #if defined(BOOST_HAS_WINTHREADS) int milliseconds; to_duration(xt, milliseconds); Sleep(milliseconds); #elif defined(BOOST_HAS_PTHREADS) # if defined(BOOST_HAS_PTHREAD_DELAY_NP) timespec ts; to_timespec_duration(xt, ts); int res = 0; res = pthread_delay_np(&ts); assert(res == 0); # elif defined(BOOST_HAS_NANOSLEEP) timespec ts; to_timespec_duration(xt, ts); // nanosleep takes a timespec that is an offset, not // an absolute time. nanosleep(&ts, 0); # else mutex mx; mutex::scoped_lock lock(mx); condition cond; cond.timed_wait(lock, xt); # endif #elif defined(BOOST_HAS_MPTASKS) int microseconds; to_microduration(xt, microseconds); Duration lMicroseconds(kDurationMicrosecond * microseconds); AbsoluteTime sWakeTime(DurationToAbsolute(lMicroseconds)); threads::mac::detail::safe_delay_until(&sWakeTime); #endif xtime cur; xtime_get(&cur, TIME_UTC); if (xtime_cmp(xt, cur) <= 0) return; } }
void sleep(const system_time& st) { detail::thread_data_base* const thread_info=detail::get_current_thread_data(); if(thread_info) { unique_lock<mutex> lk(thread_info->sleep_mutex); while(thread_info->sleep_condition.timed_wait(lk,st)); } else { xtime const xt=get_xtime(st); for (int foo=0; foo < 5; ++foo) { # if defined(BOOST_HAS_PTHREAD_DELAY_NP) timespec ts; to_timespec_duration(xt, ts); BOOST_VERIFY(!pthread_delay_np(&ts)); # elif defined(BOOST_HAS_NANOSLEEP) timespec ts; to_timespec_duration(xt, ts); // nanosleep takes a timespec that is an offset, not // an absolute time. nanosleep(&ts, 0); # else mutex mx; mutex::scoped_lock lock(mx); condition cond; cond.timed_wait(lock, xt); # endif xtime cur; xtime_get(&cur, TIME_UTC); if (xtime_cmp(xt, cur) <= 0) return; } } }