Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #65740

Re: system wide mutex

References <cf62da1e-45f0-4ace-924a-b3035063c71e@googlegroups.com>
Date 2014-02-09 05:00 -0600
Subject Re: system wide mutex
From Skip Montanaro <skip@pobox.com>
Newsgroups comp.lang.python
Message-ID <mailman.6578.1391943647.18130.python-list@python.org> (permalink)

Show all headers | View raw

> Which one is most recommended to use for mutex alike locking to
> achieve atomic access to single resource:
>
> - fcntl.lockf
> - os.open() with O_SHLOCK and O_EXLOCK
> - https://pypi.python.org/pypi/lockfile/0.9.1
> - https://pypi.python.org/pypi/zc.lockfile/1.1.0
> - any other ?

As the author of lockfile, I can tell you it only implements advisory
locking. All programs needing to access the locked resources must
cooperate. It also has bugs which have been reported which I have yet
to spend any time fixing.

Beyond that, your question isn't really detailed enough to answer
completely. You don't identify what sort of systems you need this to
work on (Windows, Mac, various flavors of Unix?), whether programs
written in other languages will be involved (you did say "system
wide"), and whether you need to use it in the face of network file
systems like NFS or Samba.

Skip

Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

system wide mutex Asaf Las <roegltd@gmail.com> - 2014-02-09 02:39 -0800
  Re: system wide mutex Asaf Las <roegltd@gmail.com> - 2014-02-09 03:00 -0800
  Re: system wide mutex Skip Montanaro <skip@pobox.com> - 2014-02-09 05:00 -0600
    Re: system wide mutex Asaf Las <roegltd@gmail.com> - 2014-02-09 03:07 -0800
    Re: system wide mutex Roy Smith <roy@panix.com> - 2014-02-09 09:45 -0500
      Re: system wide mutex Skip Montanaro <skip@pobox.com> - 2014-02-09 09:40 -0600
      Re: system wide mutex Chris Angelico <rosuav@gmail.com> - 2014-02-10 09:09 +1100
  Re: system wide mutex Marko Rauhamaa <marko@pacujo.net> - 2014-02-09 18:14 +0200
    Re: system wide mutex Asaf Las <roegltd@gmail.com> - 2014-02-09 09:39 -0800
  Re: system wide mutex Grant Edwards <invalid@invalid.invalid> - 2014-02-10 17:00 +0000
  Re: system wide mutex Miki Tebeka <miki.tebeka@gmail.com> - 2014-02-10 09:46 -0800

csiph-web