package main

import (
	"fmt"
	"time"
)

func main() {
	stop := make(chan struct{})

	go func() {
		select {
		case <-stop:
			fmt.Println("worker 收到停止信号，退出")
		}
	}()

	time.Sleep(2 * time.Second)
	fmt.Println("main: 关闭 stop channel")
	close(stop)

	time.Sleep(1 * time.Second)
}