On Sun, 3 Feb 2002, Dan Kegel wrote:
> Kev wrote:
> >
> > > The /dev/epoll patch is good, but the interface is different enough
> > > from /dev/poll that ircd would need a new engine_epoll.c anyway.
> > > (It would look like a cross between engine_devpoll.c and engine_rtsig.c,
> > > as it would need to be notified by os_linux.c of any EWOULDBLOCK return values.
> > > Both rtsigs and /dev/epoll only provide 'I just became ready' notification,
> > > but no 'I'm not ready anymore' notification.)
> >
> > I don't understand what it is you're saying here. The ircu server uses
> > non-blocking sockets, and has since long before EfNet and Undernet branched,
> > so it already handles EWOULDBLOCK or EAGAIN intelligently, as far as I know.
>
> Right. poll() and Solaris /dev/poll are programmer-friendly; they give
> you the current readiness status for each socket. ircu handles them fine.
I would have to agree with this comment. Hybrid-ircd deals with poll()
and /dev/poll just fine. We have attempted to make it use rtsig, but it
just doesn't seem to agree with the i/o model we are using, which btw, is
the same model that Squid (is/will be?) using. I haven't played with
/dev/epoll yet, but I pray it is nothing like rtsig.
Basically what we need is, something like poll() but not so nasty.
/dev/poll is okay, but its a hack. The best thing I've seen so far, but
it too seems to take the idea so far is FreeBSD's kqueue stuff(which
Hybrid-ircd handles quite nicely).
Regards,
Aaron
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This archive was generated by hypermail 2b29 : Thu Feb 07 2002 - 21:00:30 EST