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When QFutureWatcher (or QFutureInterface) is paused, it doesn't mean that it will take effect immediately: the pending tasks may still be in progress and keep reporting results. At the moment QFutureWatcher will queue those events and report only with the next resume. This behavior is wrong, QFutureWatcher should not decide when to report events, the sender should decide when is the right time. There's no benefit in reporting already happened events with delay. Because of this, even the pause event itself was being reported after resume. Fixed the behavior by removing the logic of queueing events when the state is set to "paused". It seems unlikely that the users of QFutureWatcher rely on reporting events with delay. [ChangeLog][Important Behavior Changes][QtCore] QFutureWatcher will not immediately stop delivering progress and result ready signals when the future is paused. At the moment of pausing there may be still computations that are in progress and cannot be stopped. Signals for such computations will be still delivered after pause, instead of being postponed and reported only after next resume. Fixes: QTBUG-12152 Change-Id: I9f0b545ac096578c52cc72d60575c018c01e3368 Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io> Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io> |
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| .. | ||
| .gitignore | ||
| CMakeLists.txt | ||
| qfuturewatcher.pro | ||
| tst_qfuturewatcher.cpp | ||