在 Golang，有没有办法每隔一段时间做重复性的工作？

Question

有没有办法在Go中执行重复的后台任务？ 我在想在Java中类似这样的 Timer.schedule(task, delay, period) 我知道我可以用goroutine和Time.sleep()来完成这个任务，但是我想要一些容易停止的东西。

这就是我得到的，但是对我来说看起来很丑。 有没有更干净/更好的方法？

func oneWay() {
    var f func()
    var t *time.Timer

    f = func () {
        fmt.Println("doing stuff")
        t = time.AfterFunc(time.Duration(5) * time.Second, f)
    }

    t = time.AfterFunc(time.Duration(5) * time.Second, f)

    defer t.Stop()

    //simulate doing stuff
    time.Sleep(time.Minute)
}

转载于:https://stackoverflow.com/questions/16466320/is-there-a-way-to-do-repetitive-tasks-at-intervals-in-golang

Answer 1

The function time.NewTicker makes a channel that sends a periodic message, and provides a way to stop it. Use it something like this (untested):

ticker := time.NewTicker(5 * time.Second)
quit := make(chan struct{})
go func() {
    for {
       select {
        case <- ticker.C:
            // do stuff
        case <- quit:
            ticker.Stop()
            return
        }
    }
 }()

You can stop the worker by closing the quit channel: close(quit).