[Openmcl-devel] My beach balls runneth over

Andrew Shalit alms at clozure.com
Tue May 19 11:51:36 PDT 2009

For those not up on the lingo (like me), SBOD = "Spinning Beachball of  
Doom".  i.e. it's a Mac thing.

On May 19, 2009, at 2:45 PM, Ron Garret wrote:

> I regret to report that CCL 1.3 seems to still have some pretty
> serious bugs.  The UI is much improved, pretty much usable at this
> point.  But as soon as I lean on it (i.e. try to run some of Alexander
> Repenning's demos) it hangs  with the dreaded SBOD.  Sometimes it
> hangs without my even having to lean on it, just playing around with
> Hemlock (and by "playing around" I mean just editing, not hacking the
> Hemlock code).  On one occasion I ended up in the CCL Kernel
> debugger.  I have not yet played around enough to see if I can find a
> reliable way to reproduce the problem.  Many of the demos do work, but
> I have yet to go more than about 10 minutes at a time without a crash.
> My questions are:
> 1.  Is anyone else seeing this behavior or is it just me?  I can't
> imagine how Alexander was able to write this code if he was having the
> same experience I am.
> 2.  If this is a known problem, what's the prognosis for getting it
> fixed?
> 3.  Is there anything I can do when I encounter the SBOD to extract
> useful debugging information?
> Thanks,
> rg
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