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;
}
}
}
