for循环内的并发goroutines

Question

I have written goroutine inside for loop as follow. What I want is to execute the goroutine for each item in the listofDevices list concurrently but this logic is running goroutine for only one item in the listofDevices list.

    for _, ip := range listOfDevices {
            inChan <- types.NewNotification(time.Now(), "/cloudtracer/status", nil,
                    &map[key.Key]interface{}{
                            key.New(ip): types.Pointer{Pointer: "/cloudtracer/status/" + ip},
                    })
            pingOneMachine := probe.NewPing(ip, 2*time.Second, inChan)
            // For now stopping the probe after few minutes. This will change later
            ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
            defer cancel()

            wg.Add(len(listOfDevices))
            go func() {
                    defer wg.Done()
                    pingOneMachine.Run(ctx)
            }()
    }
    wg.Wait()

Can anyone help me in fixing this out? thanks in advance.

Answer 1

do it like following

for ;;{
        wg.Add(1)
        go func(){
            defer wg.Done()
        }
    }
    wg.Wait()