前言

父gorutine如何优雅得控制子gorutine退出?

 

 

 

前戏

通过全局变量

package main

import (
	"fmt"
	"sync"
	"time"
)

var wg sync.WaitGroup

var signal bool

func child() {
	defer wg.Done()
	for {
		//通过程序逻辑来控制gorutine退出
		if signal {
			break
		}
		time.Sleep(time.Second * 2)
		fmt.Println("我是child gorutine")
	}
}

func main() {
	wg.Add(1)
	go child()
	time.Sleep(time.Second * 10)
	signal = true
	wg.Wait()

}