Duncan Booth wrote: > Dale Strickland-Clark <[EMAIL PROTECTED]> wrote: > >> In Linux this is easy with 'signal' and 'kill' but how can I get one >> Python process to signal another (possibly running as a service)? >> >> All I need is a simple prod with no other data being sent and none >> being returned - except that the signal was delivered. >> >> Receiving a signal should generate an interrupt. I'm not looking for a >> solution the involves polling. >> > Lots of ways. Basically all involving creating a thread which waits on an > event and then calls your code when the event is generated. > > You can use semaphores, named pipes &c.; you could create a windows > message queue and simply send the process a message when you want to alert > it; you could create a COM server and call a method on it; you could use > asynchronous procedure calls (APCs) (but you still need to ensure that > there is a thread in an alertable wait state). > > If the code you want to signal is running as a service then the easiest > way to signal it is to call win32service.ControlService with a user > defined service code. That gives you 127 signals to play with, and > Python's win32 library will simply call the SvcOther method within your > service code (although not of course using the same thread as the actual > service is running on).
Thanks Duncan. -- Dale Strickland-Clark Riverhall Systems - www.riverhall.co.uk -- http://mail.python.org/mailman/listinfo/python-list
