RE: epoll_wait, epoll_ctl

[David Schwartz]

> So, what's supposed to happen in a threaded program where one thread
> does an epoll_ctl on an epoll fd while another thread is currently
> waiting in epoll_wait on the same fd?

	Nothing special.

> In particular, what happens if a
> thread does an EPOLL_CTL_DEL on one of the fds that is currently being
> waited on? Is there a possibility of an event being returned on the fd
> even after the EPOLL_CTL_DEL completes?

	Absolutely. The EPOLL_CTL_DEL might not even start until after the event
has been determined to be returned and the wait is in the process of
returning.

	DS


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/