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Groups > comp.lang.python > #56762
| References | <mailman.1025.1381541497.18130.python-list@python.org> <m2vc13rup4.fsf@cochabamba.vanoostrum.org> |
|---|---|
| Date | 2013-10-12 22:42 -0600 |
| Subject | Re: Inter-process locking |
| From | Jason Friedman <jsf80238@gmail.com> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.1048.1381639375.18130.python-list@python.org> (permalink) |
The lockfile solution seems to be working, thank you. On Fri, Oct 11, 2013 at 10:15 PM, Piet van Oostrum <piet@vanoostrum.org> wrote: > Jason Friedman <jsf80238@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 <piet@vanoostrum.org> > WWW: http://pietvanoostrum.com/ > PGP key: [8DAE142BE17999C4] > -- > https://mail.python.org/mailman/listinfo/python-list
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Inter-process locking Jason Friedman <jsf80238@gmail.com> - 2013-10-11 17:44 -0600
Re: Inter-process locking Piet van Oostrum <piet@vanoostrum.org> - 2013-10-12 00:15 -0400
Re: Inter-process locking Jason Friedman <jsf80238@gmail.com> - 2013-10-12 22:42 -0600
Re: Inter-process locking Piet van Oostrum <piet@vanoostrum.org> - 2013-10-13 08:46 -0400
Re: Inter-process locking Jason Friedman <jsf80238@gmail.com> - 2013-10-18 20:08 -0600
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