golang select为case添加优先级

func worker(highPriority, lowPriority <-chan int, stopCh chan struct{}) {
    for {
        select {
        case <-stopCh:
            return
        case job := <-highPriority: // 优先处理高优先级通道
            fmt.Println("High priority job:", job)
        default:
            select {
            case job := <-highPriority: // 再次检查高优先级
                fmt.Println("High priority job:", job)
            case job := <-lowPriority: // 处理低优先级
                fmt.Println("Low priority job:", job)
            case <-stopCh:
                return
            }
        }
    }
}