Report mutiple go routine progress. If you wang report async goroutine schedule, you can use a channel to report the progress sequentially. Especilly if you want design a progressing bar.

report_goroutine_progress.go

package main

import (
        "fmt"
        "sync"
        "time"
)

func main() {
        c := make(chan struct{})
        go func() {
                processing := 0
                for range c {
                        processing++
                        fmt.Printf("%d%% ", processing)
                }
        }()

        wg := &sync.WaitGroup{}
        wg.Add(100)
        for i := 0; i < 100; i++ {
                go func() {
                        time.Sleep(1 * time.Second)
                        c <- struct{}{}
                        wg.Done()
                }()
        }
        wg.Wait()
        close(c)
        fmt.Println("task Done")
}