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use nix::sys::time::{TimeSpec, TimeValLike};
use nix::sys::timerfd::{
ClockId, Expiration, TimerFd, TimerFlags, TimerSetTimeFlags,
};
use std::time::Instant;
#[test]
pub fn test_timerfd_oneshot() {
let timer =
TimerFd::new(ClockId::CLOCK_MONOTONIC, TimerFlags::empty()).unwrap();
let before = Instant::now();
timer
.set(
Expiration::OneShot(TimeSpec::seconds(1)),
TimerSetTimeFlags::empty(),
)
.unwrap();
timer.wait().unwrap();
let millis = before.elapsed().as_millis();
assert!(millis > 900);
}
#[test]
pub fn test_timerfd_interval() {
let timer =
TimerFd::new(ClockId::CLOCK_MONOTONIC, TimerFlags::empty()).unwrap();
let before = Instant::now();
timer
.set(
Expiration::IntervalDelayed(
TimeSpec::seconds(1),
TimeSpec::seconds(2),
),
TimerSetTimeFlags::empty(),
)
.unwrap();
timer.wait().unwrap();
let start_delay = before.elapsed().as_millis();
assert!(start_delay > 900);
timer.wait().unwrap();
let interval_delay = before.elapsed().as_millis();
assert!(interval_delay > 2900);
}
#[test]
pub fn test_timerfd_unset() {
let timer =
TimerFd::new(ClockId::CLOCK_MONOTONIC, TimerFlags::empty()).unwrap();
timer
.set(
Expiration::OneShot(TimeSpec::seconds(1)),
TimerSetTimeFlags::empty(),
)
.unwrap();
timer.unset().unwrap();
assert!(timer.get().unwrap().is_none());
}