[Python-Dev] Re: [Stackless] comments on PEP 219

[Greg Ewing]

Christian Tismer <tismer@tismer.com>:

> It does not
> matter how and where frames were created, it is just impossible
> to jump at a frame that is held by an interpreter on the C stack.

I think I need a clearer idea of what it means for a frame
to be "held by an interpreter".

I gather that each frame has a lock flag. How and when does
this flag get set and cleared?

Greg Ewing, Computer Science Dept, +--------------------------------------+
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