1.go

package main

import (
    "fmt"
    "runtime"
)

func green(k int) {
    var i = 0;
    for {
        i++
        if(i > 1000000000) {
            i = 0
            fmt.Printf("go %d\n", k)
        }
    }
}


func main() {
    runtime.GOMAXPROCS(1)
    go green(1)
    //runtime.LockOSThread()
    green(2)
    //runtime.UnlockOSThread()
}