1#[cfg(any(target_os = "android", target_os = "linux"))]
2#[test]
3fn 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