In a message dated 11/18/2003 12:03:27 AM Eastern Standard Time, [EMAIL PROTECTED] writes:
Subject: Re: Jim's Sunday commits and AOLserver 4.1
On 2003.11.17, Jim Davidson <[EMAIL PROTECTED]> wrote:
> Glad somebody noticed the new code :) The changes to kick of 4.1 were in two
> areas:
>
> 1. Adding an I/O event callback interface for connections before they
> are queued for processing (called "pre-queue"). The interface is a
> bit tricky to use and there's no documentation or example module
> (yet). The general idea is to enable efficient pre-fetch of remote
> resources prior to running the connection, keeping the connection
> threads from stalling on I/O. For the ordinary nssock module, there
> should be no impact. For the SSL module, reads are now handled by
> special reader threads, not the connection threads. This may require
> moving some state from thread to connection and/or socket local
> storage.
Does this mean that it'll be easy to add non-HTTP request processors
into 4.1? Basically, now we can again define I/O handlers that can
understand non-HTTP connections, right?
Nope -- that's not the goal here. The goal is to enable I/O event callbacks in the single-threaded comm driver thread after the request has been read from the client browser but before queueing for processing.
Truth be told, only folks who expect to have multiple interactions with remote web services on each transaction (e.g., AOL) would be interested in using this approach. The API will be less convenient and more error prone than the current model of simply placing such requests in the middle of the connection processing thread (e.g., an ADP page using ns_http for some web service request). Also, other systems which you would also normally access synchronously (e.g., ns_db calls) would need to be factored out to socket-level API's to work fully in this model.
> 2. Adding a new interp tracing API to allows us to further cleanup and
> simplify the overly complex and clunky Tcl initialization process.
> Again, just the C API here -- no example module yet.
Jim, when are you going to implement Tcl_CloneInterp()? :-)
> These changes are in some core areas so the code is marked as an
> "alpha" version right now -- beware! :)
I assume the code at least builds and runs still, right? :-P
Guess it's time to do a 'cvs up' ...
-- Dossy
Still builds for me :)
-Jim
-- AOLserver - http://www.aolserver.com/
To Remove yourself from this list, simply send an email to <[EMAIL PROTECTED]> with the body of "SIGNOFF AOLSERVER" in the email message. You can leave the Subject: field of your email blank.
