epoll
epoll
Posted Feb 13, 2019 19:30 UTC (Wed) by axboe (subscriber, #904)In reply to: epoll by abatters
Parent article: io_uring, SCM_RIGHTS, and reference-count cycles
Which is a lot less elegant imho, and introduces extra conditionals in the code.
Posted Feb 15, 2019 15:12 UTC (Fri)
by dw (subscriber, #12017)
[Link]
epoll
but epoll's semantics are different, it's basically a "weak reference". Closing the FD causes the poller to unregister it, which makes sense, as the only alternative is epoll_wait() yielding events on a file for which no FD exists