Pauses/stop QObjects inside QThread event loop

Dariusz

Hey

I'm in need of pausing a certain QObject running in the QThread event loop so the object::event() does not fire. I want it to still receive events, but I don't want it to execute them until I unblock the loop...

How can I do it ?

Regards
Dariusz

SGaist

Hi,

What kind of event do you have in mind ?

Dariusz

@SGaist said in Pauses/stop QObjects inside QThread event loop:

Hi,

What kind of event do you have in mind ?

Well say I send 100k events to my Qobject. I would like to pause its event loop for a while and resume it later.

SGaist

How are you sending these events ? What do they trigger in your object ?

Dariusz

QObject::event() filters events it receives (which I send via qApp::postEvent(object,event);) and processes them accordingly. I was thinking I could do while(pause)QThread::msleep(1); in the QObject::Event(QEvent*e); but that feels... "bad"...

SGaist

Again, can you explain why you are using events directly ?
What are you doing in these objects ?

Dariusz

I'm using them to do the processing and control order of my work via Qevent/priority it provides. Qt don't send any events to it (as fara s I'm aware) so its just my processing unit.

Dariusz

@SGaist Hey, any idea how to pause that event loop? Is it QObjects event loop or QThread Event loop that I need to pause?

Regards
Dariusz

SGaist

QObject has no event loop, the event loop is in QCoreApplication and siblings.

You can not just stop the one from you main application. As for QThread you can interrupt the thread but I'm really not sure that's the best way to handle your situation.

From the looks of it, you seem to have to create a queue of the events received and store these there while in pause mode and then empty that queue on restart if that makes sense.