c - Distinguishing file descriptor types in epoll -


i have network client library i'm putting reads/writes network sockets.

there single thread network i/o , responds requests exposed client api. client api requests popped off fifo queue.

in order thread @ request, when main loop blocked on epoll_wait thinking should use eventfd can add epoll_ctl.

so question how can distinguish between event pushed onto fifo queue , network i/o if epoll notifies epollin?

edit: should add not wanting store event fd in data member, rather use ptr member. suppose need store fd somewhere inside structure.

can check see if triggered event = event file descriptor , therefore read fifo well, , if it's not equal must network event? safe? or there best practice approach.

yes have compare file descriptors. example in manual page this.


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