core/time/time_linux.odin


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38

package time

import "core:sys/linux"

_IS_SUPPORTED :: true

_now :: proc "contextless" () -> Time {
	time_spec_now, _ := linux.clock_gettime(.REALTIME)
	ns := time_spec_now.time_sec * 1e9 + time_spec_now.time_nsec
	return Time{_nsec=i64(ns)}
}

_sleep :: proc "contextless" (d: Duration) {
	ds := duration_seconds(d)
	seconds := uint(ds)
	nanoseconds := uint((ds - f64(seconds)) * 1e9)

	ts := linux.Time_Spec{
		time_sec  = seconds,
		time_nsec = nanoseconds,
	}

	for {
		if linux.nanosleep(&ts, &ts) != .EINTR {
			break
		}
	}
}

_tick_now :: proc "contextless" () -> Tick {
	t, _ := linux.clock_gettime(.MONOTONIC_RAW)
	return Tick{_nsec = i64(t.time_sec*1e9 + t.time_nsec)}
}

_yield :: proc "contextless" () {
	linux.sched_yield()
}