Function nc::timer_getoverrun

pub fn timer_getoverrun(timer_id: timer_t) -> Result<i32, Errno>

Get overrun count for a per-process timer.

use core::mem::size_of;

fn handle_alarm(signum: i32) {
    assert_eq!(signum, nc::SIGALRM);
}

fn main() {
    const TIMER_SIG: i32 = nc::SIGRTMAX;

    let sa = nc::sigaction_t {
        sa_flags: nc::SA_SIGINFO,
        sa_handler: handle_alarm as nc::sighandler_t,
        ..nc::sigaction_t::default()
    };
    let mut old_sa = nc::sigaction_t::default();
    let ret = nc::rt_sigaction(TIMER_SIG, &sa, &mut old_sa, size_of::<nc::sigset_t>());
    assert!(ret.is_ok());

    let tid = nc::itimerspec_t {
        it_interval: nc::timespec_t::default(),
        it_value: nc::timespec_t {
            tv_sec: 1,
            tv_nsec: 0,
        },
    };
    let mut ev = nc::sigevent_t {
        sigev_value: nc::sigval_t {
            sival_ptr: &tid as *const nc::itimerspec_t as usize,
        },
        sigev_signo: TIMER_SIG,
        sigev_notify: nc::SIGEV_SIGNAL,
        sigev_un: nc::sigev_un_t::default(),
    };
    let mut timer_id = nc::timer_t::default();
    let ret = nc::timer_create(nc::CLOCK_MONOTONIC, Some(&mut ev), &mut timer_id);
    assert!(ret.is_ok());
    println!("timer id: {:?}", timer_id);

    let flags = 0;
    let time = nc::itimerspec_t {
        it_interval: nc::timespec_t::default(),
        it_value: nc::timespec_t {
            tv_sec: 1,
            tv_nsec: 0,
        },
    };
    let ret = nc::timer_settime(timer_id, flags, &time, None);
    assert!(ret.is_ok());

    let mut cur_time = nc::itimerspec_t::default();
    let ret = nc::timer_gettime(timer_id, &mut cur_time);
    assert!(ret.is_ok());
    println!("cur time: {:?}", cur_time);

    let ret = nc::pause();
    assert_eq!(ret, Err(nc::EINTR));

    let ret = nc::timer_getoverrun(timer_id);
    assert!(ret.is_ok());
    assert_eq!(ret, Ok(0));

    let ret = nc::timer_delete(timer_id);
    assert!(ret.is_ok());
}