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Fixed sleep(TimeDuration const& rel_time) when internal clock is not monotonic but CLOCK_MONOTONIC is available.

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Austin Beer
2017-09-19 15:06:06 -06:00
parent f56bc930bc
commit a9706f0745
2 changed files with 17 additions and 2 deletions
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17
src/pthread/thread.cpp
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@@ -491,11 +491,26 @@ namespace boost
{
void BOOST_THREAD_DECL sleep_for(const detail::timespec_duration& ts)
{
const detail::internal_timespec_timepoint& ts2 = detail::internal_timespec_clock::now() + ts;
mutex mx;
unique_lock<mutex> lock(mx);
condition_variable cond;
#if defined(CLOCK_MONOTONIC) && !defined BOOST_THREAD_HAS_CONDATTR_SET_CLOCK_MONOTONIC
const timespec maxSleepTs = {0, 100000000}; // 100 milliseconds
const detail::timespec_duration maxSleep(maxSleepTs);
const detail::mono_timespec_timepoint& ts2 = detail::mono_timespec_clock::now() + ts;
detail::timespec_duration d = ts;
while (d > detail::timespec_duration::zero())
{
detail::timespec_duration d100 = (std::min)(d, maxSleep);
cond.do_wait_until(lock, detail::internal_timespec_clock::now() + d100);
d = ts2 - detail::mono_timespec_clock::now();
}
#else
const detail::internal_timespec_timepoint& ts2 = detail::internal_timespec_clock::now() + ts;
while (cond.do_wait_until(lock, ts2)) {}
#endif
}
void BOOST_THREAD_DECL sleep_until(const detail::internal_timespec_timepoint& ts)