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From sterling <sterl...@covalent.net>
Subject Re: ap_cgi_var_lookup()
Date Mon, 12 Nov 2001 06:04:48 GMT
Sweet -

that ssl_var_lookup needs something exactly like this.  I say you do the
same for that.

sterling

On Sat, 10 Nov 2001, Doug MacEachern wrote:

> i would like to avoid calling ap_add_{common,cgi}_vars() in mod_perl and
> just tie Perl's %ENV to a lookup function.  i cooked up some generated
> code based logic in Perl's ExtUtils::Constant module.  the generated code
> will probably explain itself better than i can, but here is a comment from
> the gen_vars.pl script:
>
> #the jist of this generated code is that we:
> #do not want to build a hash table of 30-something entries
> #do not want to do 30-something strcmps
>
> #so what we do is this:
> #call strlen() only once
> #switch on length, then switch on optimal offset (name[offset])
> #and memcmp (as few times as possible) with given length
> #see comment in best_index() for detail
>
> i put a proof-of-concept here:
> http://httpd.apache.org/~dougm/mod_cgi_vars.tar.gz
>
> reason i'm posting here is because the code could be used in
> ssl_var_lookup() and the code generator could be extended to
> deal with ssl-specific variables.  ssl_var_lookup() is currently a big
> hairball of strcmps.  and the "30-something" in the comment above, is
> quite a bit more than that for ssl_var_lookup().
>
>
>
>


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