[goroutine] snippet

basic.go

func worker(queue chan string, signal *sync.WaitGroup) {
	for work := range queue {
	}
	signal.Done()
}

func main() {
	count := runtime.NumCPU() - 1
	queue := make(chan string, 10)
	signal := new(sync.WaitGroup)
	signal.Add(count)

	for i := 0; i < count; i++ {
		go worker(queue, signal)
	}
	//
	// fill queue
	//
	close(queue)
	signal.Wait()
}