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From Rodent of Unusual Size <c...@Apache.Org>
Subject [STATUS] (apache-2.0) Wed Nov 4 23:46:08 EST 1998
Date Thu, 05 Nov 1998 04:46:11 GMT
Apache 2.0 STATUS:


    2.0  : In pre-alpha development


    Everyone with plans on things they want to do for 2.0
    should add them to the repository now.  Use a descriptive

    Other code will be copied over when 1.3.? is finished.

Committed Code Changes:
Available Patches:
In progress:
Needs patch:

Open issues:

  * Library of routines to allow access to memory shared between
    processes, for things like per-module caches.  Such shared
    segments should persist until the refcount drops to zero.
    It would be cool if pools could be created in such segments
    to allow things like shared tables and arrays.
       +1: Roy, Paul, Ken, Ralf, Martin, Lars

  * "Apache ports" project - simple-to-install (a la CPAN) one-off
    tools, scripts (such as counters, guest books, et cetera)
       +1: Roy, Paul, Ken, Ralf, Martin
	David Southwell has volunteered to work on this.
       -0: Lars [If we do this for modules only I'm +1, but
                 I'm not very happy with scripts, tools or other stuff.]

  * Embed API documentation in the source, a la Java docs, so a script
    can extract the parameters and description and build a dictionary.
    If we do this, it needs to be *mandatory* in the style guide.
	+1: Ken, Lars

  * Abstract the '+/-' capabilities of the Options keyword so other
    directives can use it without re-inventing the square peg.
       +1: Ken
       Status: Ken has volunteered to work on this.

  * Really, really comply with 2068 (or whatever Roy says is the right
    document).  Like handling Vary response fields properly and reliably.
       +1: Ken

  * Improve mod_include SSI handling, perhaps by caching offsets to
    directives.  Also, clean up the conditional syntax to allow
    formats that bear a faint resemblance to other usages (such
    as allowing "=~" and "!~") in other "languages," and provide
    for caseless matches.
       +1: Roy, Ken, Martin, Lars
	   Martin sez: I've been thinking about replacing the parser
			by a recursive descent parser which would
			reduce complexity tremendously.

  * Apache reusable code library, wherein we can put some of the stuff
    developed during the HTTP project that would be useful elsewhere.
    We've got a start on this with libap, but it would be really cool
    to have things like the arrays, tables, pools, and related primitives
    moved into a library of which httpd is just a client and other things
    can be too.
       +1: Roy, Paul, Jim, Ken, Ralf, Martin, Lars

  * Replace the current Unix compilation model (Configuration.tmpl, home-brew
    Configure script) with the "autoconf toolset".
       +1: Brian, Roy, Dean, Ralf, Martin

  * Investigate replacing the current Unix compilation model (Configuration.tmpl
    home-brew Configure script) with the "autoconf toolset". (this
    varies from the above such that if it's shown that the "autoconf
    toolset" can do what we want, with less headache than what we
    have, then we go for it)
       +1: Jim, Ken, Marc, MarkC, Ben, Paul, Martin, Lars

  * The "autoconf toolset" should include all three: autoconf, automake, and 
       +1: Brian, Jim, Roy, Dean, Ken, Ralf, Martin
       +0: Lars
  * Whatever we do regarding autoconf, we should be able to configure to build
    objects other than in the source tree.  autoconf allows for this... you
    can do "mkdir obj; cd obj; ../configure".  This is great for multiple
    platforms... or even on a single platform, one copy with profiling another
    without. (There are a lot of possibilities: creating shadow trees, 
    VPATH-style Makefile settings, etc.)
       +1: Dean, Roy, Paul, Ralf, Martin, Lars

  * One of the main restrictions on Apache has been that we must assume
    a very low-level common denominator for the OSs out there. For example,
    Configure is always being derided as crappy, but it is restricted,
    by long tradition and common sense, to only use those capabilities
    that existed in the System 7 'sh' (eg: no function, etc...). One
    possible key to Apache's success is that it does not require any
    more than basic UNIX tools (and an ANSI C compiler) to build,
    compile and run. Many of the ideas floating around for 2.0 would,
    by default, (drastically) change this. Is this a good idea?

       [Roy: That overstates most of the changes proposed so far.  In any
        case, older systems will continue to be supported by older
        versions of Apache -- it is not desirable to dull the cutting edge
        just so people nowhere near the cutting edge won't get cut.]

    Here, we decide how many of the following feature ideas we will set for
    ourselves as work items for 2.0.  We can't do everything we would want
    to, otherwise 2.0 will never be released.  So please try and be 
    conservative with your votes.  Items in no particular order.  Feel free
    to add more, but try not to duplicate earlier items too much.

       [Roy: The amount of time it will take to complete 2.0 will have
        very little to do with how much change is attempted --- it depends
        only on how many people can change things simultaneously, and thus
        many suggested changes will actually speed-up the overall schedule
        if they can help parallelize development or simplify the core code.]

    * multithreading.  
        +1: Brian, Ken, Jim, Paul, Sameer, Marc, Ralf, MarkC, Ben, Martin,
            Roy, Lars
      o Thread Abstraction
        +1: Sameer, Marc, MarkC, Ben, Dean, Paul, Martin, Roy, Ralf
        Status: nobody has volunteered yet

    * revamped process model (Dean's proposal)
      Dean says: it's hard to do the multithreading work cleanly without
      considering a bunch of this
        +1: MarkC, Paul, Dean, Martin, Roy, Ralf, Lars
            Marc (+1 on much of it; threads aren't enough for perf.),
        Status: nobody has volunteered yet

    * new layered I/O.
        +1: Brian, Ken, Dean, Jim, Paul, Sameer, Marc, Ralf, MarkC, Ben,
            Roy, Lars
        Status: Ken has volunteered.

      o sfio
        -1: Dean [until it's shown to be thread safe (RST claims it isn't)]

      o bstdio
        This was written by Chris Provenzano as part of his implementation
        of Posix threads.

      o page flipping friendly, page-sized buffer oriented, zero copy I/O
        (In this model there are functions like readbuf() which return a
        pointer to a buffer, rather than taking a pointer to a buffer.  This
        is a lot like how kernels actually work.  The advantage is that you
        can get zero-copy in the user space, which is a big win for caching
        modules of all sorts.  You can also support the "traditional" slow
        style of stdio, which adds an extra user space copy.)
           [Martin:  Is there some software flying around where such
            a model has been tried? Or is it a totally new technique?]
           [Roy: I did this type of buffer streams for libwww-ada95.
            The only problem is reclaiming buffers so that a large SSI won't
            suck up all available memory just sending it out the pipe.]
        +1: Dean, Marc, Ben, Paul, Martin, Roy
        +0: Jim [what about examples? Portability concerns?], Ralf, Lars

      o NSPR: Sameer thinks that we should evaluate NSPR (ns/nspr in the
        Mozilla source tree) and determine whether or not it sucks and
        decide if we can integrate it. It appears to me, from reading
        the NPL, that including NSPR in Apache 2.0 is legit. Vote
	+1 if you like NSPR, and want to use it.

	+0: Sameer, Lars

    * API work

      o radically revamped API
           [Roy: presumably there is a goal in mind here?]
        +1: Ken, Lars
        Status: Ken has volunteered.

      o documented API [mom and apple pie]
        +1: Ken, Sameer, Marc, Ralf, Paul, Dean, Martin, Jim, Roy, Lars
        Status: Ken has volunteered.

      o just new API phases
        +1: Brian, Jim, Sameer (just the "gaping holes"),
            Ralf (especially url2url and file2file in addition to url2file) 
        -1: Roy [that is what 1.4 would be like], Lars
        Status: Ken has volunteered

      o change API 'phase' model to use module-registered hooks rather
        than a fixed static structure
        +1: Ken, Ralf, MarkC, Paul, Dean, Roy, Martin
        +0: Lars
        Status: Ken has volunteered

      o use virtual functions for module hooks
        +1: Ben
        -1: Paul, Roy [would require two APIs]

      o clearly identify API functions by renaming them
        +1: Ken, Ralf, Ben, Paul (plus back compat.), Dean, Jim, Roy, Martin
        Status: Ken has volunteered
                [Roy: looks like it is already in 1.3]

      o backward compatibility with 1.3 (just require a recompile)
        if functions get renamed, old names retained as wrappers
        +1: Paul, Sameer, Marc, MarkC
        -1: Roy, Ralf, Martin, Lars

      o make API call syntax rational (e.g., all r*() routines list r
        as their first argument, et cetera)
        +1: Ken
        +0: Ralf, Paul, Dean, Martin, Roy, Lars
        Status: Ken has volunteered

      o abstract module layering for plugins (e.g., a mod_auth interface
        into which mod_auth_mumble modules can be plugged)
        +1: Ken, Martin, Ralf
        +0: Roy [needs more detailed proposal], Lars
        Status: Ken has volunteered

    * new configuration language
        +1: Dean, Marc, Ben, Martin, Roy, Lars
        +0: Ralf, Paul
        Status: Ken has volunteered, as has Ryan Bloom <>

      o use XML
        +0: Roy, Ralf

    * rewrite in C++
        +1: Ben, Martin
        +0: Marc, Ralf, Lars
        -1: MarkC, Paul, Roy, Ken

    * make everything C++ friendly
        +1: Roy, Paul, Ken, Ralf, Martin, Lars
        Status: nobody has volunteered yet
                ("that damned pool decl" is fixed now)

    * Proxy enhancements (or drop proxy altogether?) for HTTP/1.1
      and better ftp proxy Auth handling
	+1: Martin, Lars [we need at least a mini-proxy for things
                          like reverse-proxying etc.]

Closed issues:

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