Re: kqueue, kevent - kernel event notification mechanism

[Benjamin LaHaise]

On Thu, Dec 06, 2001 at 12:57:21AM +0000, Alan Cox wrote:
> The API isnt directly the problem. In fact you can make a fine scalable select
> by implementing
> 
> 	poll_setup(..............)
> 	poll_add/poll_remove
> 	poll_wait
> 
> as multiple calls giving basically the same interface that apps expected
> anyway.  Take a look at the various /dev/poll experimental interfaces and
> bits of code.

My aio patches already have a poll operation, however it acts as a one shot 
operation: an async poll does not complete until the state indicates 
readiness or it is cancelled.  That's needed as there is a 1-1 relationship 
between submitted aio operations and the space in the completion ring.  Still, 
it looks like it will work quite nicely as a means of accelerating exiting 
poll() based servers.

		-ben

		-ben