Hmm. Right off the bat, I see a terminology problem.
The man page says
.SH NAME
epoll \- edge triggered asynchronous I/O facility
That's going to confuse some users. They might think
epoll can actually initiate I/O. Better to say
epoll \- edge triggered I/O readiness notification facility
Second, epoll_ctl(2) doesn't define the meaning of the
event mask. It should give the allowed bits and define
their meanings. If we use the traditional POLLIN etc, we
can say
POLLIN - the fd has become ready for reading
POLLOUT - the fd has become ready for writing
Note: If epoll tells you e.g. POLLIN, it means that
poll will tell you the same thing,
since poll gives the current status,
and epoll gives changes in status.
- Dan
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