Function rustix::io::epoll::epoll_add

pub fn epoll_add(
    epoll: impl AsFd,
    source: impl AsFd,
    data: u64,
    event_flags: EventFlags
) -> Result<()>

epoll_ctl(self, EPOLL_CTL_ADD, data, event)—Adds an element to an Epoll.

This registers interest in any of the events set in events occurring on the file descriptor associated with data.

Note that if epoll_del is not called on the I/O source passed into this function before the I/O source is closed, then the epoll will act as if the I/O source is still registered with it. This can lead to spurious events being returned from epoll_wait. If a file descriptor is an Arc<dyn SystemResource>, then epoll can be thought to maintain a Weak<dyn SystemResource> to the file descriptor.