Function rustix::backend::event::epoll::add

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

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

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

If delete 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 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.