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Re: The cost of stack traces

Anthony Green wrote:
On Wed, 2006-05-10 at 18:01 -0400, Andrew Haley wrote:

Yes. All we have to do is keep a table that maps IP address -> filename. 


To be more explicit, one idea would be to walk the stack backwards until
we find something "familiar" (using some heuristic for determining what
is familiar or not), and then simply using memcmp on the rest of the
stack, to see if it's what we think it is.


This "familiar" stuff would necessarily contain an IP->source_line mapping. So APH's idea to just maintain an IP->source_line map might be simpler to implement with no additional memory required.

David Daney,

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