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doc: expand epoll_ctl() documentation

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Bert Belder 2018-05-02 06:49:32 +02:00
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README.md
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@ -87,15 +87,21 @@ int epoll_ctl(HANDLE ephnd,
```
* Control which socket events are monitored by an epoll port.
* `ephnd` must be a HANDLE created by `epoll_create` or `epoll_create1`.
* `ephnd` must be a HANDLE created by
[`epoll_create()`](#epoll_createepoll_create1) or
[`epoll_create1()`](#epoll_createepoll_create1).
* `op` must be one of `EPOLL_CTL_ADD`, `EPOLL_CTL_MOD`, `EPOLL_CTL_DEL`.
* `sock` must be a valid socket created by `socket()` or `
* `sock` must be a valid socket created by [`socket()`][msdn socket],
[`WSASocket()`][msdn wsasocket], or [`accept()`][msdn accept].
* `event` should be a pointer to a [`struct epoll_event`](#struct-epoll_event).<br>
If `op` is `EPOLL_CTL_DEL` then the `event` parameter is ignored, and it
may be `NULL`.
* Returns 0 on success, -1 on failure.
* It is recommended to always explicitly remove a socket from its epoll
set using `EPOLL_CTL_DEL` *before* closing it. As on Linux, sockets
are automatically removed from the epoll set when they are closed, but
wepoll may not be able to detect this until the next call to
`epoll_wait()`.
* TODO: expand
set using `EPOLL_CTL_DEL` *before* closing it.<br>
As on Linux, closed sockets are automatically removed from the epoll set, but
wepoll may not be able to detect that a socket was closed until the next call
to [`epoll_wait()`](#epoll_wait).
* [Linux man page][man epoll_ctl]
### epoll_wait
@ -177,6 +183,9 @@ struct epoll_event {
[man epoll_create]: http://man7.org/linux/man-pages/man2/epoll_create.2.html
[man epoll_ctl]: http://man7.org/linux/man-pages/man2/epoll_ctl.2.html
[man epoll_wait]: http://man7.org/linux/man-pages/man2/epoll_wait.2.html
[msdn accept]: https://msdn.microsoft.com/en-us/library/windows/desktop/ms737526(v=vs.85).aspx
[msdn socket]: https://msdn.microsoft.com/en-us/library/windows/desktop/ms740506(v=vs.85).aspx
[msdn wsasocket]: https://msdn.microsoft.com/en-us/library/windows/desktop/ms742212(v=vs.85).aspx
[select scale]: https://daniel.haxx.se/docs/poll-vs-select.html
[wsapoll broken]: https://daniel.haxx.se/blog/2012/10/10/wsapoll-is-broken/
[wepoll.c]: https://github.com/piscisaureus/wepoll/blob/dist/wepoll.c