[PyQt] deadlock when using new style signal / slots
Hans-Peter Jansen
hpj at urpla.net
Mon Sep 6 09:43:07 BST 2010
Dear Erik,
On Friday 27 August 2010, 21:56:14 Erik Janssens wrote:
> Hi,
>
> Another issue popped up when porting our code to
> new style signal slots.
>
> it appears the deadlock occurs when one thread is
> emitting using a pyqtSignal object, while another
> thread is connecting the same pyqtSignal object to
> a slot,
I don't believe, that this is _directly_ related to the new style
signal/slot idiom, but you might want to experiment with the connection
type argument of connect.
> this is the pseudocode for the connection :
>
> class(...):
>
> def __init__(...):
> self.rsh.entity_update_signal.connect( self.handle_entity_update )
>
> @QtCore.pyqtSlot( object, object )
> def handle_entity_update( self, sender, entity ):
> ...
>
> Are these operations supposed to be thread safe or am
> I missing something ?
>
BTW, the camelot website http://www.python-camelot.com/ seems to be down
since some time.. What's the state of your project?
Best regards,
Pete
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