[Python-Dev] [ python-Patches-876206 ] scary frame speed hacks (original) (raw)

Christian Tismer tismer at stackless.com
Wed Mar 3 13:24:23 EST 2004

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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