Method handle_timeout

virtio-devices/src/console.rs:495–512

This function will be invoked whenever the timeout is reached before any other event was triggered while waiting for the epoll.

(&mut self, helper: &mut EpollHelper)

    // This function will be invoked whenever the timeout is reached before
    // any other event was triggered while waiting for the epoll.
    fn handle_timeout(&mut self, helper: &mut EpollHelper) -> Result<(), EpollHelperError> {
        if !self.endpoint.is_pty() {
            return Ok(());
        }

        if self.file_event_registered {
            // This very specific case happens when the console is connected
            // to a PTY. We know EPOLLHUP is always present when there's nothing
            // connected at the other end of the PTY. That's why getting no event
            // means we can flush the output of the console through the PTY.
            self.trigger_pty_flush()
                .map_err(EpollHelperError::HandleTimeout)?;
        }

        // Every time we hit the timeout, let's register the FILE_EVENT to give
        // us a chance to catch a possible event that might have been triggered.
        self.register_file_event(helper)
    }

    // This function returns the full list of events found on the epoll before
    // iterating through it calling handle_event(). It allows the detection of