1 #[cfg(any(target_os = "android", target_os = "linux"))]
2 #[test]
test_eventfd()3 fn test_eventfd() {
4 use rustix::io::{eventfd, read, write, EventfdFlags};
5 use std::mem::size_of;
6 use std::thread;
7
8 let efd = eventfd(0, EventfdFlags::CLOEXEC).unwrap();
9
10 let child = thread::spawn(move || {
11 for u in [1_u64, 3, 6, 11, 5000].iter() {
12 assert_eq!(write(&efd, &u.to_ne_bytes()).unwrap(), size_of::<u64>());
13 }
14 efd
15 });
16
17 let efd = child.join().unwrap();
18
19 let mut bytes = [0_u8; size_of::<u64>()];
20 let s = read(&efd, &mut bytes).unwrap();
21 assert_eq!(s, bytes.len());
22 let u = u64::from_ne_bytes(bytes);
23 assert_eq!(u, 5021);
24 }
25