Stateful I/O interface

Has anyone ever suggested adding a stateful I/O multiplexing interface which
could be used for things like network servers where something like
Kernel#select is less than ideal?

Recently introduced system calls on many operating systems for statefully
monitoring I/O events on multiple file descriptors.  One example is Linux
2.6's epoll:

http://www.die.net/doc/linux/man/man4/epoll.4.html

Another is FreeBSD/OpenBSD/NetBSD and MacOS X's kqueue:

http://developer.apple.com/documentation/Darwin/Reference/ManPages/man2/kqueue.2.html

Having some abstract way of getting these system calls into Ruby would be
especially useful for writing network servers.  Here's an example of what
such an interface could be like, implemented with Kernel#select for the time
being:

http://pastie.caboo.se/41536

All that's really needed is an object to which event monitors for various
types of events on IO objects can be added and removed, and a method of this
object that checks which monitored IO objects have events.
<http://pastie.caboo.se/41492>
I'm using a block to go through events it receives, but the Kernel#select
interface could be used as well (return an array of arrays), or a hash, or
method callbacks on some other type of object.

-- 
Tony Arcieri
ClickCaster, Inc.
[e-mail]  <[e-mail]>