Function timer_gettime 

pub unsafe fn timer_gettime(
    timer_id: timer_t,
    curr: &mut itimerspec_t,
) -> Result<(), Errno>

Fetch state of per-process timer>

Examples

const TIMER_SIG: i32 = nc::SIGRTMAX;

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

fn main() {
    let sa = nc::new_sigaction(handle_alarm);
    let ret = unsafe { nc::rt_sigaction(TIMER_SIG, Some(&sa), None) };
    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 = unsafe { 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 = unsafe { nc::timer_settime(timer_id, flags, &time, None) };
    assert!(ret.is_ok());

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

    let mask = nc::sigset_t::default();
    let _ret = unsafe { nc::rt_sigsuspend(&mask) };

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