Go Example--通道同步

package main

import (

	"fmt"

	"time"

)

func main() {

	//缓存通道

	done := make(chan bool,1)

	go worker(done)

	//等待读取chan，当chan没数据时会阻塞

	<-done

}

func worker(done chan bool)  {

	fmt.Print("working...")

	time.Sleep(time.Second)

	fmt.Println("done")

	done <- true

}