Hi Matthew, On Tue, Mar 31, 2015 at 11:50:06AM -0400, Matthew Ruffalo wrote: > On 2015-03-31 10:50, Ervin Hegedüs wrote: > > there is an app, written in Python, which stores few bytes of > > datas in a single file. The application uses threads. Every > > thread can modify the file, but only one at a time. I'm using a > > lock file to prevent the multiple access. > > > > ... > > > > How can I prevent or avoid this issue? What's the correct way to > > handle the lockfile in Python? > > Hi Ervin- > > If only one instance of the app is running at a given time, and you only > need to ensure mutual exclusion between its threads, you should probably > not use a lock *file* for this. I would strongly recommend that you use > a threading.Lock as per > https://docs.python.org/2.5/lib/module-threading.html instead of a lock > file. This will also allow you to avoid a 0.2-second polling loop; a > call to threading.Lock.acquire() will block until it is released by > another thread. > > MMR...
thanks, I hope in the next version I can try this :) a. -- https://mail.python.org/mailman/listinfo/python-list
