[pypy-dev] refcounting woes

Christian Tismer tismer at stackless.com
Fri Mar 17 02:40:17 CET 2006


Christian Tismer wrote:
> Well, I know there is a lot going on on GC and stuff,
> so this obcervation might not be new, but well, here it is.
> 
> I figured that when we call the ll_decref operations, we actually
> create an except block for the decref. This expectblock
> then does a cleanup, by calling the same function again :-)
> 
> Probably not really what we wanted to do.
> 
> just in case this might help -- chris

Oupps I forgot to mention:

This effect can be nicely seen if you run

http://codespeak.net:/svn/user/tismer/test_wrapping.py

with the viewer (make sure to have the file inside pypy).

Hit escape three times until you get the final flow graph,
and look at the tiny function call_destructor__dummyPtr

Besides tze fact that we are still overdoing with refcounting,
you see an exception handler that makes no sense.

best - chris
-- 
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