[Qt-interest] QThreads not running in parallel

[Thiago Macieira]

On Monday, 10 de October de 2011 20:20:43 Jothy wrote:
> Hi all,
> 
> I am running several (8) QThreads in the following sequence, but it doesn't
> seem to run in parallel. Only 3/4 are executed at once.
> 
> thread1->start(Qt::HighestPriority);
> thread1->wait();
> .
> .
> .
> .
> .
> .
> .
> thread8->start(Qt::HighestPriority);
> thread8->wait();
> 
> 
> What's the problem?

The design of your code.

You designed it to *wait* for the thread to exit before starting the next. So 
it will run at most two at a time: the main thread and the one you started.

-- 
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
   Software Architect - Intel Open Source Technology Center
      PGP/GPG: 0x6EF45358; fingerprint:
      E067 918B B660 DBD1 105C  966C 33F5 F005 6EF4 5358
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