获取go-routine的ID的方法

go-routine-id.go

func getGoRoutineId() uint64 {
	b := make([]byte, 32)
	b = b[:runtime.Stack(b, false)]
	b = bytes.TrimPrefix(b, []byte("goroutine "))
	b = b[:bytes.IndexByte(b, ' ')]
	id, err := strconv.ParseUint(string(b), 10, 64)
	if err != nil {
		log.Panicf("Cannot parse goroutine id from %v: %v", b, err)
	}

	return id
}