[Python-Dev] _tkinter problem with Stackless

Christian Tismer tismer@tismer.com
Fri, 24 May 2002 17:01:13 -0700

Hi friends,

I was trying to test my bdb.py patch with Idle
and saw weird behavior under Stackless:
When I close a window, Python crashes.

After a while I recognized that this is due to my
moving-the-stack-away at every 8th recursion level.
As a quick hack, I changed the threshold to 16 and
everything works just fine, but anyway:

I believe that there must be a global data structure
for Tcl/Tk living on the C stack, between a couple of
Python interpreter incarnations, that is used somehow.
This is unsane IMHO. Nothing on the C stack should
be used as a globally accessible variable. Instead I'd
like to stuff this into a structure on the heap,
which is safe.

Can anybody please give me a hint where in _tkinter
or tkappinit this might be? I really don't understand
the code, but I'd like to provide a patch.

many thanks in advance - chris
Christian Tismer             :^)   <mailto:tismer@tismer.com>
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