Thanks for the reply, so do you mean that process kill cant be handled in python for windows, i tried using atexit and thats not working too. :-(
Now pyzmq specific question, what i am thinking of is i want my client to start the forwarder, if not started, and then the next connecting client just check if its started or not and then use that for communication. So i am thinking of implementing the forwarder device as a singleton , is that the correct method or there is something in zmq which will help me to solve this problem. > Date: Tue, 20 Mar 2012 21:39:13 -0700 > From: [email protected] > To: [email protected] > Subject: Re: [zeromq-dev] Check if forwarder is running > > Signals are a unix concept. Not that I would know, but I'm guessing > there is some funkyness with the way python signals work on Windows as > this blog post implies: > > http://danielkaes.wordpress.com/2009/06/04/how-to-catch-kill-events-with-python/ > > "In the Linux world catching “kill events” would be a simple task, to > shut down another program a process just has to send a SIGTERM signal > which can be caught be Python easily using the signal module which > comes with every Python installation. However, on Windows things are a > little bit harder, because the operating system never produces SIGTERM > (and SIGILL) events according to the signal.h documentation from > MSDN." > > Remove all the zmq code entirely from your example and reproduce the > most minimal signal handler that prints on signal and I bet it still > won't work. > > You might want to look into the atexit module: > > http://docs.python.org/library/atexit.html > > > On Tue, Mar 20, 2012 at 9:14 PM, Ronald Swain <[email protected]> wrote: > > Hmmm i tried using your code but , its not working too. :-( > > > > Regarding PyZMQ version i am using pyzmq 2.1.11 which have same version of > > libzmq i guess. And i am on a 64 bit windows machine. > > > > ________________________________ > > Date: Tue, 20 Mar 2012 12:44:57 -0500 > > > > From: [email protected] > > To: [email protected] > > Subject: Re: [zeromq-dev] Check if forwarder is running > > > > I forked and edited the gist with my changes and comments. I'm not really > > sure what's wrong, but you may be having a scope > > problem: https://gist.github.com/2138347 > > http://stackoverflow.com/questions/423379/using-global-variables-in-a-function-other-than-the-one-that-created-them > > > > > > incoming, outgoing and context are visible within > > the termSignalHandler function, you need to add a global statement at the > > beginning of your function definitions, like so:global incoming, outgoing, > > context > > > > What version of pyzmq, libzmq are you using? > > > > > > -- > > Cornelius Toole > > Sent with Sparrow > > > > On Tuesday, March 20, 2012 at 12:13 PM, Ronald Swain wrote: > > > > Hello Cornelius , > > > > Thanks again and it will work for sure. > > > > Next and probably last question is why my sockets are not cleaned up in the > > forwarder, i try something like https://gist.github.com/2132163 but the > > handler is never fired. > > > > just to inform you i kill the python interpreter to close the forwarder. > > > > > > > > ________________________________ > > Date: Tue, 20 Mar 2012 10:09:04 -0500 > > From: [email protected] > > To: [email protected] > > Subject: Re: [zeromq-dev] Check if forwarder is running > > > > Ronald, > > > > Do i need to close forwarder again and than start after each message sent by > > the publisher, or can i do something like i can start the forwarder first > > and next publisher check if the forwarder is running than just leverage the > > forwarder to send some messages to the subscriber. > > > > No you just leave the forwarder running. That's the magic of using a > > forwarder with pub-sub sockets. But you should probably change how the > > forwarder device is configured. The way I use the forwarder is to have it > > bind both the incoming and outgoing sockets and then have the producers and > > consumers connect to the forwarder; that way once the forwarder is running, > > producer and consumer processes can start and stop without crashing the > > other. > > See: https://gist.github.com/2136666#comments > > > > > > -- > > Cornelius Toole > > Sent with Sparrow > > > > On Tuesday, March 20, 2012 at 4:35 AM, Symbian Projects wrote: > > > > Hello All, > > > > In one of my past threads i got the zmq device forwarder working, now my > > exact use case is like i have arbitrary no of publishers and subscribers. > > > > First i start the ZMQ forwarder device, than i am starting the subscribers > > and than a single publisher to send the message. > > > > My objective is there are no of publishers who should be able to send > > messages to the connected subscribers, now how this can happen with a > > FORWARDER. > > > > Do i need to close forwarder again and than start after each message sent by > > the publisher, or can i do something like i can start the forwarder first > > and next publisher check if the forwarder is running than just leverage the > > forwarder to send some messages to the subscriber. > > > > I hope my question is clear. > > > > Thanks a Lot for reply. > > Ronald > > > > > > _______________________________________________ > > zeromq-dev mailing list > > [email protected] > > http://lists.zeromq.org/mailman/listinfo/zeromq-dev > > > > > > > > _______________________________________________ zeromq-dev mailing list > > [email protected] > > http://lists.zeromq.org/mailman/listinfo/zeromq-dev > > _______________________________________________ > > zeromq-dev mailing list > > [email protected] > > http://lists.zeromq.org/mailman/listinfo/zeromq-dev > > > > > > > > _______________________________________________ zeromq-dev mailing list > > [email protected] > > http://lists.zeromq.org/mailman/listinfo/zeromq-dev > > > > _______________________________________________ > > zeromq-dev mailing list > > [email protected] > > http://lists.zeromq.org/mailman/listinfo/zeromq-dev > > > _______________________________________________ > zeromq-dev mailing list > [email protected] > http://lists.zeromq.org/mailman/listinfo/zeromq-dev
_______________________________________________ zeromq-dev mailing list [email protected] http://lists.zeromq.org/mailman/listinfo/zeromq-dev
