ornamental gardens, failing turnstiles

turnstiles.go

package main

import "fmt"

var counter = 0

func turnstile(turns int, done chan bool){
	for i := 0; i < turns; i++{
		counter = counter + 1
	}
	done <- true
}

func main(){
	done := make(chan bool)
	turns := 1000
	turnstiles := 2
	for ts := 0; ts < turnstiles; ts++ {
		go turnstile(turns, done)
	}
	for ts := 0; ts < turnstiles; ts++ {
		<- done
	}
	fmt.Printf("After %d * %d turns, got %d\n", turns, turnstiles, counter)
}