yifan-gu · December 18, 2015 18:38 · yifan-gu · Dec 18, 2015
diff --git a/lockandprint.go b/lockandprint.go
 package main

 import (
 	"fmt"
 	"os"

 	"github.com/coreos/rkt/pkg/lock"
 )

 func lockAndPrint() {
 	lock.ExclusiveLock("/tmp/hello", lock.Dir)
 	fmt.Println("hello")
 }

 func main() {
 	os.Mkdir("/tmp/hello", 0777)
 	defer os.RemoveAll("/tmp/hello")

 	lockAndPrint()
 	lockAndPrint()
 }
	package main

	import (
	"fmt"
	"os"

	"github.com/coreos/rkt/pkg/lock"
	)

	func lockAndPrint() {
	lock.ExclusiveLock("/tmp/hello", lock.Dir)
	fmt.Println("hello")
	}

	func main() {
	os.Mkdir("/tmp/hello", 0777)
	defer os.RemoveAll("/tmp/hello")

	lockAndPrint()
	lockAndPrint()
	}