Qt loop

 

qt 5.15:

The QApplication.exec() while is:

int QEventLoop::exec(ProcessEventsFlags flags)
{
...

    while (!d->exit.loadAcquire())

        processEvents(flags | WaitForMoreEvents | EventLoopExec);

...
}

 

bool QEventLoop::processEvents(ProcessEventsFlags flags)

{

    Q_D(QEventLoop);

    auto threadData = d->threadData.loadRelaxed();

    if (!threadData->hasEventDispatcher())

        return false;

    return threadData->eventDispatcher.loadRelaxed()->processEvents(flags);

}