Thread problem causing some calls to hang for 25

[Thiago Macieira]

Em Terça-feira 18 Maio 2010, às 15:15:43, Thiago Macieira escreveu:
> The Qt issue is http://bugreports.qt.nokia.com/browse/QTBUG-7475. I can 
> reproduce it reliably with and without the patch.
> 
> So the patch doesn't fix the issue.
> 
> It does make it that much rarer, though. I have another issue in a private 
> bugtracker for Maemo that shows considerable improvement. Instead of
> locking  up for 25 seconds every 10-15 attempts, it takes me more than 300
> attempts to get a lockup.
> 
> I'm investigating to see if I can distill a pure-dbus testcase from 7475.

I found another race condition in QtDBus code. After fixing it, the combination 
of both fixes makes the Maemo testcase pass, in 2000 runs. Without either fix, 
it fails every 10-15 attempts.

QTBUG-7475 is still not fixed. I'm investigating a bit more with helgrind.

-- 
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
  Senior Product Manager - Nokia, Qt Development Frameworks
      PGP/GPG: 0x6EF45358; fingerprint:
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