On Fri, Jun 29, 2012 at 02:43:06PM -0700, Paton J. Lewis wrote: > At 6/19/2012 11:17 AM, Christof Meerwald wrote: > >But, taking one step back - wouldn't an alternative approach be to add > >some mechanism to allow a thread to post a user-event for an fd? So in > >delete_epoll_item you would post a user event (e.g. EPOLLUSER) for the > >fd which you can then handle in your epoll_wait processing thread - > >with no additional synchronisation necessary. > I think this is an excellent suggestion, and in fact your proposal > is more similar to what Windows provides when solving this problem. > I'll test this idea out with our code and get back to you. Is there > an existing kernel technique that you would recommend for posting a > user event for an fd, or should I explore using epoll_ctl with > EPOLL_CTL_MOD?
I don't know about any existing kernel technique for this, but my gut feeling would be a new op value for epoll_ctl, maybe something like EPOLL_CTL_TRIGGER. Christof -- http://cmeerw.org sip:cmeerw at cmeerw.org mailto:cmeerw at cmeerw.org xmpp:cmeerw at cmeerw.org -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
