Hey Jesse,
It was good meeting you at Pycon.  I don't have anything handy at the moment
although, if memory serves, the most trivial of example seemed to illustrate
the problem.  Basically any situation where a joinable queue would keep
bumping up against being empty (ie retiring items faster than they are being
fed), and does enough work between get() and task_done() to be preempted
would eventually break.  FWIW I was running on a Windows box.

I am afraid I am away from my computer until late tonight but I can try to
cook something up then (I presume you are sprinting today?).  Also I think
the issue becomes clear when you think about what happens if
joinablequeue.task_done() gets preempted between its few lines.

-brian

On Mon, Mar 30, 2009 at 2:55 PM, Jesse Noller <report@bugs.python.org>wrote:

>
> Jesse Noller <jnoller@gmail.com> added the comment:
>
> Hi Brian - do you have a chunk of code that exacerbates this? I'm having
> problems reproducing this, and need a test so I can prove out the fix.
>
> ----------
>
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> <http://bugs.python.org/issue4660>
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