如何停止goroutine [重复]

Question

This question already has an answer here:

• how to stop a goroutine 6 answers

I have a goroutine that calls a function and with a special parameter i want to start or stop this goroutine. My problem is that this code never stops my goroutine, it creates everytime a new job.

quit := make(chan bool)
run := make(chan bool)

    go func() {
        for {
            select {
            case <-quit:
                close(run)
            case <-run:
                myFunc(c)
            default:
            }
        }
    }()

    if x == true {
        quit <- true
    } else {
        run <- true
    }

How do I stop my routine?

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Answer 1

When you close the run channel, case <-run will always trigger: listening on a closed channel returns a zero value immediately.

if you want to stop the goroutine, you should return after you get the <-quit signal.

As a side note, your default: clause makes the for loop actively work, you should get rid of it (you will still be listening on both channels)