[Qt-interest] Interesting QThread problem

[Thiago Macieira]

On Tuesday, 23 de November de 2010 23:18:57 Yifei Li wrote:
> The following code is a minimal example of what I'm trying to do.  Once the
> plugin prints out one message, it will wait until 'Next' button is clicked
> to print out the next message. Try to terminate the execution by clicking
> 'Stop' and then start the execution.  You will notice the first message is
> printed out fine. But when you click on 'Next' button to print the second
> message, the whole app seems to deadlock.

That's to be expected. Calling QThread::terminate() is a forceful termination 
and will probably leave behind locked mutexes and other resources.

Solution: don't use terminate.
-- 
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
  Senior Product Manager - Nokia, Qt Development Frameworks
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