making nio use kevent/kqueue

[Nick Johnson]

I think there could be a considerable performance gain if java.nio were 
tweaked to use kevent/kqueue(2) as opposed to poll(2).

It looks like the files that would need to be touched for this are:

j2se/src/solaris/native/sun/nio/ch/
	DevPollArrayWrapper.c  (not sure about this one actually since 
FreeBSD doesn't use /dev/poll)
	PollArrayWrapper.c
	SocketChannelImpl.c

Does that sound about right?  I see select(2) and poll(2) used in other 
places as well, though outside of nio where they're likely to show the 
greatest benefit.

Are there any caveats or "gotchas" I should be aware if should I decide to 
take some free time to try to come up with a kevent patch for nio?

Also, is there a quicker way to build a JVM when just changing a file or 
two like this?  It would be lousy to have to wait 2 hours to build after 
every minor change...

   Nick

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