Also see this question, unanswered as of now. There is a lot of confusion about EPOLLHUP, even in the man and Kernel docs. People seem to believe it is returned when polling on a descriptor locally...

Is it possible to use epoll in one-shot level-triggered mode? I couldn't find any information on it when I searched; it seems everyone uses edge-triggered mode.

I'm rather new to event based programming. I'm experimenting with epoll's edge-mode which apparently only signals files which have become ready for read/write (as opposed to level-mode which signal...

I'm using epoll to write a media server. The fds are all set to non-blocking and I'm using edge-triggered events. I know for EPOLLIN I need to loop over reading the fd until EAGAIN is returned. But...