Golang Monotonic

monotonic.go

package main

// #include <time.h>
import "C"

import (
	"fmt"
)

type TimeSpec struct {
	Seconds     int64
	NanoSeconds int64
}

func (ts TimeSpec) String() string {
	return fmt.Sprintf("%d.%d", ts.Seconds, ts.NanoSeconds)
}

func GetMonotonicTime() TimeSpec {
	var ts C.struct_timespec
	
  // see http://man7.org/linux/man-pages/man2/clock_gettime.2.html for a list of CLOCK_ constants
	C.clock_gettime(C.CLOCK_MONOTONIC_RAW, &ts)
	
	// convert to something easier to manipulate
	return TimeSpec{int64(ts.tv_sec), int64(ts.tv_nsec)}
}

func main() {
	ts := GetMonotonicTime()
	fmt.Println(ts)
}