Go语言时间处理延迟执行与定时器

Go语言时间处理与定时器

1、时间处理之延迟执行

package main

import (
	"fmt"
	"time"
)

func main()  {
	timer1 :=time.NewTimer(time.Second*3)
	<- timer1.C  //阻塞，5秒以后继续执行
	fmt.Println("wait for time1")

	//以下是如果定时时间太长了，怎么终止定时
	timer2 :=time.NewTimer(time.Second*10)
	go func() {
		<- timer2.C
		fmt.Println("timer2 过期")
	}()
	//time.Sleep(time.Second*10)
	stop2 :=timer2.Stop()//取消
	if stop2{
		fmt.Println("timer2终止")
	}
}

2、时间处理之定时器

package main

import (
	"fmt"
	"time"
)

func main(){
	ticker :=time.NewTicker(time.Second)//定时1秒 如果想间隔2秒执行一次只需将1改成2
	go func() {
		for t:=range ticker.C{  //定时干活
			fmt.Println("tick",t) //干活
		}
	}()

	time.Sleep(time.Second*10)
	ticker.Stop() //结束工作
	fmt.Println("game over")

}

执行结果如下：
tick 2021-03-08 17:12:12.497507 +0800 CST m=+1.000776171
tick 2021-03-08 17:12:13.501815 +0800 CST m=+2.005065678
tick 2021-03-08 17:12:14.497522 +0800 CST m=+3.000754425
tick 2021-03-08 17:12:15.497474 +0800 CST m=+4.000687587
tick 2021-03-08 17:12:16.500382 +0800 CST m=+5.003576748
tick 2021-03-08 17:12:17.499181 +0800 CST m=+6.002357865
tick 2021-03-08 17:12:18.499424 +0800 CST m=+7.002581876
tick 2021-03-08 17:12:19.501656 +0800 CST m=+8.004796119
tick 2021-03-08 17:12:20.499755 +0800 CST m=+9.002876460
game over