On Fri, 13 Jan 2006, Howard Chu wrote:
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? 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?
The same thing that happens when you close a file on another thread,
nothing (besides the file being automatically removed from the set).
Removing a file (either by close or by EPOLL_CTL_DEL) is not an event.
- Davide
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