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Merge remote-tracking branch 'origin/topic/bernhard/alternative-deadlock-fix'

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* origin/topic/bernhard/alternative-deadlock-fix:
  alternative deadlock issue fix.
This commit is contained in:
Robin Sommer 2013-10-25 11:10:08 -07:00
commit 15e72d1422
2 changed files with 17 additions and 5 deletions
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12
src/threading/Manager.cc
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@ -82,7 +82,17 @@ double Manager::NextTimestamp(double* network_time)
{
MsgThread* t = *i;
if ( (*i)->MightHaveOut() && ! t->Killed() )
// We check here if there's something ready to read from the
// queue. Normally the queue will tell us that reliably via
// MightHaveOut() because we keep sending heartbeats that
// will ensure that the method will eventually return true.
// However, when running without network source and without
// any communication, the timer_manager's time will always
// remain at 1.0, which means that heartbeats will never be
// triggered. In that case, we make sure to still process our
// threads from time to time.
if ( ((*i)->MightHaveOut() && ! t->Killed())
|| (timer_mgr->Time() == 1.0 && random() % 10000 == 0) )
return timer_mgr->Time();
}