[Python-Dev] stack check on Unix: any suggestions? (original) (raw)

Fred L. Drake, Jr. fdrake@beopen.com
Tue, 29 Aug 2000 16:09:29 -0400 (EDT)

Thomas Wouters writes:

(getrlimit does work, so if we have getrlimit, we can 'calculate' the maximum number of recursions from that.)

Still no go -- we can calculate the number of recursions for a particular call frame size (or expected mix of frame sizes, which is really the same), but we can't predict recursive behavior inside a C extension, which is a significant part of the problem (witness the SRE experience). That's why PyOS_StackCheck() actually has to do more than test a counter -- if the counter is low but the call frames are larger than our estimate, it won't help.

-Fred

-- Fred L. Drake, Jr. BeOpen PythonLabs Team Member