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[Python-Dev] Fwd: Mutex module

Guido van Rossum guido at python.org
Sat Feb 23 22:26:31 CET 2008 
---------- Forwarded message ----------
From: Guido van Rossum <guido at python.org>
Date: Sat, Feb 23, 2008 at 1:26 PM
Subject: Re: [Python-Dev] Mutex module
To: Facundo Batista <facundobatista at gmail.com>


According to the docstring it's only meant to be used with sched.py.
 Please don't try to make it work with threads! Maybe this needs to be
 moved into a "simulations" package in 3.0?



 On Sat, Feb 23, 2008 at 1:22 PM, Facundo Batista
 <facundobatista at gmail.com> wrote:
 > Hi!
 >
 > In today's bug day, an Argentinian colleague called my attention over
 > the issue 1746071.
 >
 > This issue is about mutex:
 >
 > """The mutex module defines a class that allows mutual-exclusion via
 > acquiring and releasing locks. It does not require (or imply)
 > threading or multi-tasking, though it could be useful for those
 > purposes."""
 >
 > The problem here is that mutex is NOT thread safe! Even when it says
 > in the docs that it could be useful for threading!
 >
 > "Ok, let's make this mutex to be thread-safe", I thought, and my
 > colleague reviewed the proposed patch, even finding and submitting a
 > correction to it.
 >
 > But two points prevented me for further work here:
 >
 > - It has not test cases at all
 >
 > - It does something that could be easily done (today) using parts from
 > the threading module.
 >
 > There're some comments in that issue that points towards a deprecation
 > of this module.
 >
 > So, I'm asking here. Is it still working in 3k? What are the plans
 > here? What do you think about this module? Is somebody using it?
 >
 > Thank you all! Regards,
 >
 > [1] http://bugs.python.org/issue1746071
 > [2] http://docs.python.org/dev/library/mutex.html
 >
 > --
 > .    Facundo
 >
 > Blog: http://www.taniquetil.com.ar/plog/
 > PyAr: http://www.python.org/ar/
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 --Guido van Rossum (home page: http://www.python.org/~guido/)



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