Swift 队列的创建

作者: ngugg | 来源:发表于2018-09-27 22:39 被阅读3次

Swift 队列的创建
swift创建队列
iOS GCD
iOS多线程编程理解-GCD
Swift4:GCD的使用
GCD的队列类型与NSOperationQueue的队列类型
GCD常用的语法笔记
iOS 网络开发
多线程与网络 - 概况
iOS 基础网络篇

swift 创建的队列默认为串行队列

        let queue = DispatchQueue(label: "hahha")
//        let queue = DispatchQueue(label: "haha", attributes: .concurrent)
        
        for _ in 1...10 {
            queue.async {
                print("111---" + "\(Thread.current)")
            }
        }
        for _ in 1...10 {
            queue.async {
                print("222---" + "\(Thread.current)")
            }
        }
        for _ in 1...10 {
            queue.async {
                print("333---" + "\(Thread.current)")
            }
        }

运行结果：

111---<NSThread: 0x600000279b40>{number = 3, name = (null)}
111---<NSThread: 0x600000279b40>{number = 3, name = (null)}
111---<NSThread: 0x600000279b40>{number = 3, name = (null)}
111---<NSThread: 0x600000279b40>{number = 3, name = (null)}
111---<NSThread: 0x600000279b40>{number = 3, name = (null)}
111---<NSThread: 0x600000279b40>{number = 3, name = (null)}
111---<NSThread: 0x600000279b40>{number = 3, name = (null)}
111---<NSThread: 0x600000279b40>{number = 3, name = (null)}
111---<NSThread: 0x600000279b40>{number = 3, name = (null)}
111---<NSThread: 0x600000279b40>{number = 3, name = (null)}
222---<NSThread: 0x600000279b40>{number = 3, name = (null)}
222---<NSThread: 0x600000279b40>{number = 3, name = (null)}
222---<NSThread: 0x600000279b40>{number = 3, name = (null)}
222---<NSThread: 0x600000279b40>{number = 3, name = (null)}
222---<NSThread: 0x600000279b40>{number = 3, name = (null)}
222---<NSThread: 0x600000279b40>{number = 3, name = (null)}
222---<NSThread: 0x600000279b40>{number = 3, name = (null)}
222---<NSThread: 0x600000279b40>{number = 3, name = (null)}
222---<NSThread: 0x600000279b40>{number = 3, name = (null)}
222---<NSThread: 0x600000279b40>{number = 3, name = (null)}
333---<NSThread: 0x600000279b40>{number = 3, name = (null)}
333---<NSThread: 0x600000279b40>{number = 3, name = (null)}
333---<NSThread: 0x600000279b40>{number = 3, name = (null)}