[Python-Dev] PyEval_GetFrame() revisited (original) (raw)

Christian Tismer tismer@tismer.com
Fri, 14 Mar 2003 19:05:05 +0100

Christian Tismer wrote:

Hi there!

here has been this patch to the threadstate, which allows to override the tstate's frame access. I just saw the part of the patch that modifies pyexpat:

f = PyFrameNew( tstate, /back/ c, /code/ ! PyEvalGetGlobals(), /globals/ NULL /locals/ where the PyEvalGetGLobals is used instead of tstate->frame->fglobals Well, this unfortunately is not sufficient for this module, since pyexpat still has direct access to tstate->frame, in a much worse way: pyexpat does read and write the frame variable!

Ah!! Can it be that PyEval_GetFrame() is just indended to signal to an extension like Psyco that it needs to quickly invent a frame now? So it is not thought of to be a complete interface for accessing tstate->frame no longer explicitly, is is only meant for read access?

So I can't move it elsewhere and probably need to work around that forever, unless we also write PyEval_SetFrame()

sigh - ciao - chris

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