Date: Fri, 11 Apr 1997 19:53:20 -0600 (MDT)
From: Marc Slemko <marcs@worldgate.com>
To: new-httpd@apache.org
Subject: Re: multithreaded DNS resolution
In-Reply-To: <Pine.LNX.3.95dg3.970411184246.30832e-100000@twinlark.arctic.org>
Message-ID: <Pine.BSF.3.95q.970411195145.27878A-100000@valis.worldgate.com>
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On Fri, 11 Apr 1997, Dean Gaudet wrote:

> I'm pretty sure I've seen talk of this on bind-workers.  You could also
> look at glibc v2 (which is linux libc v6) since it is supposed to be the
> first "re-entrant" version of the library.  Solaris has re-entrant
> resolving functions already...  yeah we're gonna need a portable _r
> library to do 2.0 with real threads.

AFAIK, a lot of reentrant implementations are still unusable for a
threaded application that makes heavy use of DNS resolution because they
still block far too much and that will really kill your web server... 

> 
> Dean
> 
> On Fri, 11 Apr 1997, Nathan Schrenk wrote:
> 
> > 
> > I have found myself needing a MT-safe DNS resolver library for a project
> > I'm working on, and began looking around the Internet for such a piece of
> > code.  I haven't found anything yet, and thought I'd ask here to see if
> > anyone knows where I can find something like this.  If I can't find a
> > thread safe DNS resolver that will work for me (and has a suitable
> > license,) I'm going to have to write one. 
> > 
> > If no one knows where I can find such code, and I end up writing something
> > that does this, I'd like to contribute the code for use in Apache 2.0
> > since I believe something like this will be needed for simultaneous
> > hostname resolution in different threads.  Are there any fixed plans for
> > Apache 2.0 development?  Is there a set group of people that are going to
> > be architecting 2.0? 
> > 
> > Nathan
> > 
> > --
> > Nathan Schrenk						nschrenk@neog.com
> > Neoglyphics Media Corp.                              http://www.neog.com/
> > 
> > 
>