摘要: // 创建信号量 dispatch_semaphore_t semaphore = dispatch_semaphore_create(0); // 创建全局并行 dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PR 阅读全文
posted @ 2019-07-24 16:51 huangyan1022 阅读(139) 评论(0) 推荐(0)