1 #[cfg(any(
2     target_os = "android",
3     target_os = "illumos",
4     target_os = "linux",
5     target_os = "solaris"
6 ))]
7 mod epoll;
8 
9 #[cfg(any(
10     target_os = "android",
11     target_os = "illumos",
12     target_os = "linux",
13     target_os = "solaris"
14 ))]
15 pub(crate) use self::epoll::{event, Event, Events, Selector};
16 
17 #[cfg(any(
18     target_os = "dragonfly",
19     target_os = "freebsd",
20     target_os = "ios",
21     target_os = "macos",
22     target_os = "netbsd",
23     target_os = "openbsd"
24 ))]
25 mod kqueue;
26 
27 #[cfg(any(
28     target_os = "dragonfly",
29     target_os = "freebsd",
30     target_os = "ios",
31     target_os = "macos",
32     target_os = "netbsd",
33     target_os = "openbsd"
34 ))]
35 pub(crate) use self::kqueue::{event, Event, Events, Selector};
36 
37 /// Lowest file descriptor used in `Selector::try_clone`.
38 ///
39 /// # Notes
40 ///
41 /// Usually fds 0, 1 and 2 are standard in, out and error. Some application
42 /// blindly assume this to be true, which means using any one of those a select
43 /// could result in some interesting and unexpected errors. Avoid that by using
44 /// an fd that doesn't have a pre-determined usage.
45 const LOWEST_FD: libc::c_int = 3;
46