On Sat, 2007-09-22 at 19:28 -0700, Kurtis Heimerl wrote: > Hi, I'm developing my first python application, a multi-threaded cell > phone gadget on ubuntu 7.10. I've just split off my first thread, and > I've noticed something extremely strange: There doesn't seem to be any > preemption. There are currently two threads, one that pings a storage > service to see if there are messages available, and the other that > runs the gtk windows. If I do not explicitly yield either one, it runs > forever. I'm assuming this is a setting somewhere, but that's a very > strange default behavior. > > How do I get this to go about preempting these threads? Any advice > would be helpful. Thanks!
I'm far from an expert in threaded Python applications, but threading ought to work out of the box. By default the Python interpreter will switch threads every 100 bytecode instructions (http://docs.python.org/api/threads.html). Note that if you are synchronizing around a lock, you may need to sleep before trying to reacquire the the lock to completely exit the critical section. A good overview of this (and the Python threading model) can be found at http://linuxgazette.net/107/pai.html -- Evan Klitzke <[EMAIL PROTECTED]> -- http://mail.python.org/mailman/listinfo/python-list
