Sharing objects between processes

[ET]

> Message: 2
> Date: Sun, 8 Mar 2009 12:00:40 -0700 (PDT)
> From: Aaron Brady <castironpi at gmail.com>
> Subject: Re: Sharing objects between processes
> To: python-list at python.org
> Message-ID:
> 	<5514c3df-d74e-47d8-93fc-34dd5119ec9d at c11g2000yqj.googlegroups.com>
> Content-Type: text/plain; charset=ISO-8859-1
> 
> On Mar 8, 1:36?pm, ET <p... at 2drpg.org> wrote:
> > I have been using the 'threading' library and decided to try swapping it
> > out for 'processing'... while it's awesome that processing so closely
> > mirrors the threading interface, I've been having trouble getting my
> > processes to share an object in a similar way.
> >
> > Using the 'with' keyword didn't work, and using normal locks doesn't
> > result in the expected behavior (I can get an object to be accessible in
> > more than one process, and Python indicates that the instances are
> > living at the same address in memory, but changes in one process are not
> > reflected in the other[s]). ?I'm sure this is because my expectations
> > are incorrect. :)
> >
> > The problem, as briefly as possible:
> > I have three processes which need to safely read and update two objects.
> >
> > I've been working with processing, multiprocessing, and parallel python,
> > trying to get this working... I suspect it can be accomplished with
> > managers and/or queues, but if there's an elegant way to handle it, I
> > have thus far failed to understand it.
> >
> > I don't particularly care which library I use; if someone has done this
> > or can recommend a good method they're aware of, it'd be incredibly
> > helpful.
> >
> > Thank you!
> 
> There is POSH: Python Object Sharing, which I learned about a while
> ago, but never used much.
> 
> http://poshmodule.sourceforge.net/
> 
> It's UNIX only.

Thanks, I'll definitely keep that link handy... unfortunately, this
particular project needs to run on Windows as well as Linux-based
systems.