Re: User interface thread

On Sun, 2005-11-13 at 10:48 -0600, will guaraldi wrote: 
> On Sun, 13 Nov 2005, Eugene wrote:
> >
> > Shutting the lyntin down is a bit messy and has some races, so I 
> > consider clarifying threading issues a bit. The code in question is 
> > unnecessarily hairy by now.
> 
> In regards to the first sentence, I haven't seen any issues with the 
> existing UIs.  So while I acknowledge there could be race conditions 
> involved with exiting, I haven't seen any evidence of them.

I've seen this very frequently with cursesui. I think I remember it
happening a time or so with urwidui too...though I've not been able to
reproduce it:

david@zepto:~/.lyntin$ lyntin
Exception in thread ui (most likely raised during interpreter shutdown):
Traceback (most recent call last):
  File "/usr/lib/python2.4/threading.py", line 442, in __bootstrap
  File "/usr/lib/python2.4/threading.py", line 422, in run
  File
"/home/david/dev/personal/python/lyntin/lyntin40/lyntin/ui/cursesui.py",
line 839, in runui
exceptions.TypeError: 'NoneType' object is not callable
Unhandled exception in thread started by
Error in sys.excepthook:

Original exception was:


It doesn't seem to be an issue for textui (at least I don't ever
remember seeing it). I suppose this means that a) glassnake & I aren't
shutting down our UIs properly, or b) textui has almost nothing to
shutdown, and so is almost always too fast to be caught in the race
condition.

-davidc

-- 
gpg-key: http://www.zettazebra.com/files/key.gpg

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