Ned,

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>>> Ned Konz <ned at squeakland.org> 02/18/04 09:23PM >>>
On Wednesday 18 February 2004 5:58 pm, Bill Schwab wrote:
> Did Dan report a problem with an image periodically freezing?  If so, was
> it ever resolved?  I had a similar experience some time ago, and used a
> variant of the Windows VM's  "Dump call stack" command to help trap it.
>  The short version is that I hacked the command to dump all processes
> rather than simply the active one, and then tweaked a critical section
> based on my observations of several freezes.  In my case, it was Morphic,
> not the VM that was hanging.

I'd appreciate knowing (if you noticed):

- which critical section did you tweak?
- what was hanging Morphic?
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The problem was not in Squeak as delivered.  I am slowly assembling something using MIDI input and a Morphic user interface.  Stepping didn't feel right for the problem, and I also wanted to do something closer to the way I write my cash cows - I view Squeak as one possible emergency exit from Windows.

It has been a while since I had the problem, but IIRC, I enlarged a critical section in a background process.  It wasn't quite as simple as the typical deadlocks that I sometimes cause and fix in Dolphin, but it would have been nearly impossible to fix without call stacks for all non-dead processes.

Bill



Wilhelm K. Schwab, Ph.D.
University of Florida
Department of Anesthesiology
PO Box 100254
Gainesville, FL 32610-0254

Email: bills at anest4.anest.ufl.edu
Tel: (352) 846-1285
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