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From "Paul J. Reder" <rede...@remulak.net>
Subject Re: Speaking of pipes from cgis causing trouble...
Date Tue, 01 Oct 2002 20:27:39 GMT


Ryan Bloom wrote:

> On Tue, 1 Oct 2002, Paul J. Reder wrote:
> 
> 
>>I've been working on the caching code and ran across a core dump...
>>
>>A particular file contains an SSI call to a cgi. The cgi causes a pipe
>>bucket to pass down the chain. cache_in_filter tries to save the bucket
>>away and core dumps.
>>
>>Since a pipe bucket can be of any length, and could take any amount of
>>time to complete, I would assume that the cache code should decide not
>>to cache any response with a pipe bucket, correct?
>>
> 
> Not necessarily.  The cache code should stream the data to the cache, and
> allow the data to also stream to the core_output_filter.


Until it reaches the specified max cache size?

So instead of trying to just copy and insert the pipe bucket, it should read
from the pipe and add buckets to the cache (and forward copies on)? Seems
like it would defeat some of the sendfile optimizations and such... Is it worth
the code and lost optimizations to read/store/pass the piped data?


-- 
Paul J. Reder
-----------------------------------------------------------
"The strength of the Constitution lies entirely in the determination of each
citizen to defend it.  Only if every single citizen feels duty bound to do
his share in this defense are the constitutional rights secure."
-- Albert Einstein



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