【GoLand】定时器Timer和Ticker原理和差异

一、Timer定时器

1.Timer定时器框架实现

package main

import (
    "fmt"
    "time"
)

func main () {
    d := time.Duration(time.Second * 2)
    t := time.NewTimer(d)
    go func() {
        for {
            <- t.C
            fmt.Println("Timer task is working")
            t.Reset(time.Second * 2)
        }
    }()
    for {
        fmt.Println("main is running:")
        time.Sleep(time.Duration(1 * time.Second))
    }
    defer t.Stop()
}

二、Ticker定时器

1.Ticker定时器框架实现

package main

import (
    "fmt"
    "time"
)

func main () {
    d := time.Duration(time.Second * 2)
    t := time.NewTicker(d)
    go func() {
        for {
            <- t.C
            fmt.Println("Timer task is working")
        }
    }()
    for {
        fmt.Println("main is running:")
        time.Sleep(time.Duration(1 * time.Second))
    }
    defer t.Stop()
}

三、Timer和Ticker的差异

1.Timer到时间需要Reset重置，而Ticker不需要，每到间隔时间就会执行任务处理函数

//如果Timer定时器不使用Reset,就只执行了一次任务
package main

import (
    "fmt"
    "time"
)

func main () {
    d := time.Duration(time.Second * 2)
    t := time.NewTimer(d)
    go func() {
        for {
            <- t.C
            fmt.Println("Timer task is working")
            //t.Reset(time.Second * 2)
        }
    }()
    for {
        fmt.Println("main is running:")
        time.Sleep(time.Duration(1 * time.Second))
    }
    defer t.Stop()
}

四、参考资料

my.oschina.net/renhc/blog/… blog.csdn.net/lanyang1234… draveness.me/golang/docs…