[Development] QThread usage/guidance

[Tony Van Eerd]

So that is the 'recommended' style then?


> -----Original Message-----
> From: Olivier Goffart [mailto:olivier at woboq.com]
> Sent: Friday, October 05, 2012 10:54 AM
> To: development at qt-project.org
> Cc: Tony Van Eerd
> Subject: Re: [Development] QThread usage/guidance
> 
> On Friday 05 October 2012 14:31:51 Tony Van Eerd wrote:
> > What was the final resolution (if any) of  the email thread
> > "QThread::finished() race → fixing QThread"
> > http://lists.qt-project.org/pipermail/development/2011-
> November/000284.html
> >
> >
> > In particular as seen in
> > http://mayaposch.wordpress.com/2011/11/01/how-to-really-truly-use-
> qthreads-
> > the-full-explanation/
> >
> >                 worker->moveToThread(thread);
> >                 connect(worker, SIGNAL(error(QString)), this,
> > SLOT(errorString(QString))); connect(thread, SIGNAL(started()),
> worker,
> > SLOT(process())); connect(worker, SIGNAL(finished()), thread,
> > SLOT(quit())); connect(worker, SIGNAL(finished()), worker,
> > SLOT(deleteLater())); connect(thread, SIGNAL(finished()), thread,
> > SLOT(deleteLater()));
> >
> > Is there a race where the worker deleteLater() doesn't happen due to
> the
> > thread having already finished?
> 
> There used to be that race. But since Qt 4.8, the deleteLater is
> handled
> separatly specially to allow this usage (commit 0c643b179)
> 
> So I see no races.
> 
> --
> Olivier
> 
> Woboq - Qt services and support - http://woboq.com
> 


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