QTimer doesn't expire

Hi Everyone,

I have 2 classes- ClassA and ClassB. ClassA has a signal called MySignal and ClassB has a slot called MySlot. And the connection is-

Code:

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connect(ObjClassA ,SIGNAL(MySignal()), ObjClassB,SLOT(MySlot()), Qt::BlockingQueuedConnection);

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ClassB has a timer called MyTimer which is connected to MyTimeoutSlot in the same class.
And MySlot is as follows-

Code:

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void ClassB::MySlot()
{
      MyTimer.start(2000);  //2 secs
}
 
void ClassB::MyTimeoutSlot()
{
      qDebug("MyTimer expired");
}

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The scenario is such that MySignal is emitted continuously (synchronization is taken care of, I mean only after MyTimeoutSlot is finished executing then only next emission of MySignal happens). But what I observed is that sometimes MyTimer doesn't start or worst doesn't expire (I am not sure which among these two is happening).
Since QTimer is being started inside a slot whose connection type is BlockingQueuedConnection, is that causing an issue?
Has someone before encountered such issues wherein QTimer doesn't start or expire? :confused:

Is the event loop running during those 2 seconds?

Quote:

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Originally Posted by wysota

Is the event loop running during those 2 seconds?

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Yes, event loop is running as ClassB in my case is actually a QWidget class. When ever it receives some data in MySlot(), it displays them in the widget and then when timer expires, the widget is reset.

Just to be sure: ObjClassA and ObjClassB live in different threads, right?


Cheers,
_

Quote:

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Originally Posted by anda_skoa

Just to be sure: ObjClassA and ObjClassB live in different threads, right?

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Yes yes, both the objects are in different threads.
There are very high chances of some bug being present in my code and I am trying very hard to detect where the bug could be. Meanwhile I just wanted to know if there are possibilities of a QTimer not starting or not expiring. Can some condition arise wherein inspite of the event loop running QTimer doesn't function properly?

Quote:

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Originally Posted by sattu

Yes yes, both the objects are in different threads.

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Does each thread run its own event loop?