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use libc;
use std::os::unix::io::RawFd;
use {Errno, Result};
bitflags!(
flags EventFdFlag: libc::c_int {
const EFD_CLOEXEC = 0o2000000, // Since Linux 2.6.27
const EFD_NONBLOCK = 0o0004000, // Since Linux 2.6.27
const EFD_SEMAPHORE = 0o0000001, // Since Linux 2.6.30
}
);
mod ffi {
use libc;
extern {
pub fn eventfd(initval: libc::c_uint, flags: libc::c_int) -> libc::c_int;
}
}
pub fn eventfd(initval: usize, flags: EventFdFlag) -> Result<RawFd> {
unsafe {
let res = ffi::eventfd(initval as libc::c_uint, flags.bits());
Errno::result(res).map(|r| r as RawFd)
}
}
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