On 5 Mar, 06:12, Michael Torrie <[EMAIL PROTECTED]> wrote: > Does anyone have any recommended ideas/ways of implementing a proper > control and status protocol for communicating with threads? I have a > program that spawns a few worker threads, and I'd like a good, clean way > of communicating the status of these threads back to the main thread. > Each thread (wrapped in a very simple class) has only a few states, and > progress levels in those states. And sometimes they can error out, > although if the main thread knew about it, it could ask the thread to > retry (start over). How would any of you do this? A callback method > that the thread can call (synchronizing one-way variables isn't a > problem)? A queue? How would the main thread check these things? > Currently the main thread is polling some simple status variables. This > works, and polling will likely continue to be the simplest and easiest > way, but simple status variables are very limited. Are there any > pythonic patterns people have developed for this. > > thanks. > > Michael
I've found that Queue.Queue objects are the easiest way to communicate between threads in Python. So, I'd suggets that you attach a Queue to each thread: the main thread will use its queue to receive the status messages from the other threads; the other threads will use their queues to receive the retry command (or any other command that may be needed) from the main thread. Ciao ------ FB -- http://mail.python.org/mailman/listinfo/python-list
