- Make sure to listen for EPOLLRDHUP in watchers so users can be
notified when a peer closes a connection.
- Handle EPOLLHUP and EPOLLERR gracefully. Even handle spurious
EPOLLHUP by means of an error counter. If we receive too many errors
we now restart the epoll fd and re-add all watchers.
- Return error from `epoll_ctl()` in `uev_watcher_stop()`
- Ignore any error from `uev_watcher_stop()` in `uev_watcher_set()`
- Move LIST_REMOVE() et al from io.c to core uev.c, should be
done for timer and signal callbacks as well, of course.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
Joachim Nilsson