Go: Process Synchronization

1. channel

func main() {
    boolChan := make(chan bool, 100)
    for i := 0; i < 100; i++ {
        go func(v int) {
            println(v)
            boolChan <- true
        }(i)
    }
    for i := 0; i < 100; i++ {
        <-boolChan
    }
}

2. sync.WaitGroup

func main() {
    wg := sync.WaitGroup{}
    wg.Add(10)
    for i := 0; i < 10; i++ {
        go func(v int) {
            fmt.Printf("Goroutine: %v, v: %v\n", GetGoroutineID(), v)
            wg.Done()
        }(i)
    }
    wg.Wait()
}

func main() {
    wg := sync.WaitGroup{}
    wg.Add(10)
    for i := 0; i < 10; i++ {
        go t(i, &wg)
    }
    wg.Wait()
}
// use *sync.WaitGroup
func t(v int, wg *sync.WaitGroup) {
    fmt.Printf("Goroutine: %v, v: %v\n", GetGoroutineID(), v)
    wg.Done()
}