[Interest] [PROGRESS] Long pause with 5.7

[Giulio Camuffo]

2016-11-08 16:01 GMT+01:00 william.crocker at analog.com
<william.crocker at analog.com>:
> On 11/08/2016 09:45 AM, Michael Sué wrote:
>>
>> Hi,
>>
>>>        qApp->processEvents(QEventLoop::ExcludeUserInputEvents,5000);
>>
>>
>> Your processEvents call timeouts after 5 secs, and you wait for 5 secs, at
>> least sometimes. How about reducing it to 1 sec
>> then, as you think it has nothing to do, anyway, and probably only waiting
>> 1 sec (sometimes).
>>
>
> I assume the call has something to do (sync window size and location
> requests with the X server),
> I just don't think that takes the full 5 seconds. Yet the call blocks for
> the full 5 seconds,
> SOMETIMES, even though I believe it has run out of events to process.
>
> This is somewhat of hack in the max time out (5 secs.)
>
> But, if there *IS* something to do (sync), and I do not give it enough time,
> then the new bug will be that my app only restores window size and location
> SOMETIMES, because processEvents was not given enough time.

You seem to be misunderstanding what the timeout is. It doesn't say
"this function call may take at most 5 seconds", it says "wait at most
5 seconds". If there are events in the event loop the processEvents()
function call will dispatch them and return. If there aren't it will
wait for some, and if in 5 seconds no event comes it will return. So
if as you say you don't believe there is anything to do and there are
no events then the 5 seconds wait is to be expected. The time an event
is a bit late and it is not dispatched by the time you call that there
will be no wait.


Cheers,
Giulio

>
> Bill.
>
> Oh, and I never did apologize that this email
> thread has nothing to do with QML or OpenGL.     ;-)
>
>
>> Best, Michael.
>>
>>
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