[Development] What kind of airplane we want to build?

Marc Mutz marc.mutz at kdab.com
Thu Jan 21 02:37:43 CET 2016

On Wednesday 20 January 2016 21:52:49 Thiago Macieira wrote:
> On Wednesday 20 January 2016 21:08:07 Pau Garcia i Quiles wrote:
> > Replacing QThread with std::thread? Please don't.
> Unlike the containers or even futures/promises vs QtConcurrent, we can
> easily  argue that QThread provides a lot more functionality than
> std::thread. In just one word: signals.

What happened to "you're doing it wrong!"? :) AFAIU that blog post, you're 
supposed to use the signals of QObjects living in that thread, not the QThread 

And that's perfectly possible with std::thread, too:

     auto po = new ProcessingObject();
     connect(po, ...);
     po->moveToThread(nullptr); // enable "pulling" moveToThread()
     auto t = std::thread([po, gui = QThread::currentThread()]() {
         QEventLoop loop;
         connect(po, ..., &loop, &QEventLoop::quit);
         // or: delete po;

Am I missing something?

> We should provide QThread::makeThread() taking a lambda and some other 
> niceties, though.

Marc Mutz <marc.mutz at kdab.com> | Senior Software Engineer
KDAB (Deutschland) GmbH & Co.KG, a KDAB Group Company
Tel: +49-30-521325470
KDAB - The Qt Experts

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