网络多线程-并发-串行队列

//    dispatch_queue_t queue = dispatch_get_global_queue(0, 0); //并发队列
    dispatch_queue_t queue = dispatch_queue_create("myquene", DISPATCH_QUEUE_SERIAL);//串行队列
    dispatch_async(queue, ^{
        for (int i =0; i<10; i++) {
            NSLog(@"0-----%@",[NSThread currentThread]);
        }
    });
    dispatch_async(queue, ^{
        for (int i =0; i<10; i++) {
            NSLog(@"1-----%@",[NSThread currentThread]);
        }
    });