summaryrefslogtreecommitdiff
path: root/src/sys/eventfd.rs
blob: c54f952f09a9ead9f04640ce69d374acbcf1bddd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
use std::os::unix::io::RawFd;
use crate::Result;
use crate::errno::Errno;

libc_bitflags! {
    pub struct EfdFlags: libc::c_int {
        EFD_CLOEXEC; // Since Linux 2.6.27
        EFD_NONBLOCK; // Since Linux 2.6.27
        EFD_SEMAPHORE; // Since Linux 2.6.30
    }
}

pub fn eventfd(initval: libc::c_uint, flags: EfdFlags) -> Result<RawFd> {
    let res = unsafe { libc::eventfd(initval, flags.bits()) };

    Errno::result(res).map(|r| r as RawFd)
}