Hi, I have an app written under version Python 2.3.5. The problem I'm having is that it hangs on one of its threads. The thread that hangs does updates to a standard dictionary shared with another thread that only reads this dictionary. This app works beautifully on a single processor boxes in my testing environment, but this problem quickly occurs when the software runs on a dual cpu SMP blade server with hyperthreading turned off, Windows 2003 server.
I do not bother using application level locks because I figure the GIL is going to do the job for me, and because with one thread doing updates and the other only reading, things remain consistent logically for the app. The app will not have a problem if the dictionary changes just before it does a read. I have searched this group on this subject and seen one warning against sharing objects between threads. I don't recall every writing a threaded app that didn't share data between threads in some way. I've also seen a recomendation in this list against using threads at all with Python. I'm hoping that is an extreme view and not general wisdom here. Python has never failed me when analysis indicated that it would be the correct tool for the job. Thank you for your time and attention. Randy -- http://mail.python.org/mailman/listinfo/python-list
