The lockfile solution seems to be working, thank you.
On Fri, Oct 11, 2013 at 10:15 PM, Piet van Oostrum <p...@vanoostrum.org> wrote: > Jason Friedman <jsf80...@gmail.com> writes: > >> I have a 3rd-party process that runs for about a minute and supports >> only a single execution at a time. >> >> $ deploy >> >> If I want to launch a second process I have to wait until the first >> finishes. Having two users wanting to run at the same time might >> happen a few times a day. But, these users will not have the >> skills/patience to check whether someone else is currently running. >> I'd like my program to be able to detect that "deploy" is already >> running, tell the user, wait a minute, try again, repeat. >> >> I do not know whether anyone has had success with >> http://pythonhosted.org/lockfile/lockfile.html. > > It seems to work on Mac OS X. > >> I supose I could use http://code.google.com/p/psutil/ to check for a >> process with a particular name. > > That will quite probably give you race conditions. > > File locking is generally the best solution for this kind of problems, unless > you can make use of OS level semaphores. > -- > Piet van Oostrum <p...@vanoostrum.org> > WWW: http://pietvanoostrum.com/ > PGP key: [8DAE142BE17999C4] > -- > https://mail.python.org/mailman/listinfo/python-list -- https://mail.python.org/mailman/listinfo/python-list