Simple async golang loop

golang_loop.go

package main

import (
        "log"
        "math"
        "os"
        "strconv"
        "time"
)

func do_something(index int) {
        for {
                log.Println(index)
                time.Sleep(1000 * time.Millisecond)
        }
}

func main() {
        log.Println("Starting...")

        threads, _ := strconv.Atoi(os.Args[1])
        log.Printf("Using %d threads...", threads)

        for index := 0; index < threads; index++ {
                go do_something(index + 1)
        }

        <-time.After(time.Duration(math.MaxInt64))
        log.Println("Done")
}