Hello Pete, it might indeed be that the deadlock is not directly related to the new style signal slot, since the deadlock might become visible due to a slight timing difference cause by eg switching to new style signal slots.
however I wonder wether I'm doing anything wrong by connecting and emiting the same signal object at the same time (I did experiment with the connection type, but without result). For now I have put a mutexlock around this particular instance, but I wonder if I should mutex all possible cases ?? The camelot website (www.python-camelot.com) should be up and running, I was not aware of any downtime, it's hosted at weebly.com. The project is going well, we've put a lot of work in switching from MDI to tab based and are now converting to new style signal/slots because we noticed stability improvements by using them. These deadlocks are of course bothering me. Best regards, Erik On Mon, 2010-09-06 at 10:43 +0200, Hans-Peter Jansen wrote: > 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 _______________________________________________ PyQt mailing list PyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
