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From Paul Querna <c...@force-elite.com>
Subject Re: [PATCH] Custom Core-Output-Filter
Date Sun, 04 Sep 2005 23:26:25 GMT
Brian Pane wrote:
> 
> On Sep 4, 2005, at 1:42 PM, Paul Querna wrote:
> 
>> So, here is a hackish patch to allow easier building of custom core
>> output filters, for places like the Event MPM.
>>
>> It uses the APR optional functions to optionally register a  function to
>> replace the C-O-F.
> 
> 
> Thanks, that's a bit cleaner than the hack that I put in to the
> event_hooks() callback function.
> 
> To complicate the issue a bit, I'm wondering if we should replace
> ap_core_output_filter() with a nonblocking version for _all_ MPMs
> in 2.3/2.4.  The filter could query the MPM properties to decide how
> to handle flush and EOC buckets:
>  - For MPMs with async write completion support, it would setaside
>    the data and change the connection state to
>    CONN_STATE_WRITE_COMPLETION
>  - For MPMs without async write completion, the filter would
>    do a blocking write of all the data.
> 
> A case where something like this might be useful (aside from the
> event MPM) is prefork.  If people are running prefork because they
> need to use non-threadsafe modules, but they're running on
> platforms with thread support, adding an optional write completion
> thread could yield better scalability.

I am thinking we should create a svn branch to flesh out some of these
ideas?

How does 'branches/async-dev' sound to you?

-Paul

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