The home page of NBIO is:
http://www.cs.berkeley.edu/~mdw/proj/java-nbio/

>From my reading of this in the past this only supported systems that support
standard *NIX system calls. Maybe this would work on Win2k with Cygwin.

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Scott Stark
Chief Technology Officer
JBoss Group, LLC
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----- Original Message -----
From: "Peter Antman" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, October 05, 2001 5:44 AM
Subject: Re: [JBoss-dev] JBossMQ thread model


> On  5 Okt, Ole Husgaard wrote:
> > Hi,
> >
> > I hope it is OK that I forward your reply to the list.
> >
> > David Maplesden wrote:
> >> Sounds like a good idea.  It didn't feel when writing the code that an
extra
> >> thread per connection would be a problem.  If it is for you then you
will
> >> probably want to pool the communication threads as well, as there is at
> >> least one of these per connection for the commonly used OIL and UIL
> >> communication mechanisms.
> >
> > Yes, I have been looking at this too, but found no easy solution.
> > Maybe because I am not very familiar with I/O under Java.
> >
> > My problem is multiplexing several file stream reads on a single
> > thread. Here, the Java libraries seem to lack features similar
> > to the BSD select(2) syscall or the SysV poll(2) syscall.
> > While something could be emulated with the InputStream.available()
> > method, it would be a busy wait for input since this method would
> > have to be called almost constantly.
> >
> > I believe that the new I/O system in JDK1.4 supports this, but
> > we cannot require users to use that (yet). See JSR-51.
>
> There might be a way around that. One of the members in JSR-51 has
> written a non blocking io library for java (on Unix plattforms) that
> works with earlier releases of the JDK - nbio. According to the website,
it
> is used in  SwiftMQ "to provide superior scalability and performance for
> MQ-based applications". Something to beat for JBossMQ ;-)
>
> //Peter



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