[Qt-interest] QRunnable question

[Philippe]

 Em Terça-feira 04 Maio 2010, às 12:43:23, Philippe escreveu:
> > This should work.
> > 
> > Note: because of an API design flaw that Nokia does not want to admit, you
> > won't be able to sleep in your QRunnable code, by using
> > QThread::sleep(...) since this API is "Static protected". Or you have to
> > trick the API.
> 
> We don't admit because we don't consider it a flaw.
> 
> If you're using Concurrent and runnables, you're sending jobs (the runnables) 
> into a shared resource (the thread pool). Those jobs are expected to finish as 
> fast as possible, which would preclude sleeping.
> 
> If you need to sleep, for whatever reason (and the only valid reason I've ever 
> heard is polling hardware), you probably want a long-lived, dedicated thread. 
> So not a thread pool.

These are good arguments for QRunnable, indeed.

But IMHO, not in "practical life". For instance, browsing the
Qt source code reveals a few places where sleep is used in code not
derived from QThread (QProcess, QAudioInputPrivate, QLocalSocket, QSQLite2ResultPrivate...)

In the diversity of user source codes, you can expect other cases.

Philippe