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alternative deadlock issue fix.

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This fix also fixes the deadlock issue without putting any
new strain into the main packet processing path.

Instead of occasionally returning true in MaybeReady sometime,
we occasionally process threads if time_mgr time is not running.

If time_mgr time is running, we have heartbeat messages that will
trigger processing in any case -- processing always checks the
exact state of the Queues.

This fix probably also means that we can remove the communication
loads from all input framework tests and run them all simultaneously.
This commit is contained in:
Bernhard Amann 2013-10-24 23:39:16 -07:00
parent c980d1055e
commit 2ac0d77f06
2 changed files with 10 additions and 5 deletions
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6
src/threading/Manager.cc
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@ -82,7 +82,11 @@ double Manager::NextTimestamp(double* network_time)
{
MsgThread* t = *i;
if ( (*i)->MightHaveOut() && ! t->Killed() )
if ( ( (*i)->MightHaveOut() && ! t->Killed() ) // there might be something in the queue
// Workaround: when running without network source, and without any communication,
// timer_manager is always 1. Hence the previous if will never trigger heartbeats
// In this case, we still have to check process our threads from time to time.
|| ( timer_mgr->Time() == 1.0 && random() % 10000 == 0 ) )
return timer_mgr->Time();
}