[go]基于协程的并发ping(2)

/*简单协程版*/
package main
import (
"ping"
"fmt"
"time"
//"os"
"strconv"
)

var fin chan string; //用于实现jionall

func pingr(host string,timeout int){
t1:=time.Now().UnixNano()
alive,err:=ping.Ping(host,timeout)
//alive,err:=true,0
t2:=time.Now().UnixNano()
fmt.Println(host,alive,(t2-t1)/1000000,err);
fin <- host
}

var iplist [253]string

func main() {
fin = make(chan string)
//数组赋值

for i := 0; i < len(iplist); i++ {
iplist[i]="192.168.99."+strconv.Itoa(i+1)
go pingr(iplist[i],1000)
}
for i := 0; i < len(iplist); i++ {

<-fin
//fmt.Println(ip,"joined")
}

}