[Python-Dev] [ python-Patches-876206 ] scary frame speed hacks

[Christian Tismer]

Armin Rigo wrote:

> Hello,
> 
> In summary, we need to:
> 
> - cache possibly more than one frame per code object;
> - free old frames for code objects that haven't been run for a while.
> 
> At this point I need more thinking.  If someone comes up with an elegant way
> to do both (as opposed, say, to abusing a lot of fields to put PyFrameObject
> structures into two linked lists at the same time), he'd be welcome :-)

What's bad about my proposal?
In short: No frame cache in the code object.
Have a small array of chains of cached frames.
Index this by the address of the code object modulo some
prime which is the array size.

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