let dispatchQueue = DispatchQueue.init(label:queueLabel, qos: .default, attributes: .concurrent) dispatchQueue.async(group: dispatchGroup, qos: .default, flags: DispatchWorkItemFlags.noQoS) { self.removeFromImageArray() } dispatchGroup.notify(queue: DispatchQueue.main) { self.now = CFAbsoluteTi...
那么我们改变一下代码,将closure放到一个Dispatch中去,让它在doWorkAsync返回后被调用的话,我们就需要在closure的类型前加上 @escaping标记来表明这个闭包是会“逃逸”出该方法的: func doWorkAsync(closure: @escaping () -> ()) { DispatchQueue.main.async { closure() } print("end") } doWorkAsync { ...
perform { // Get context queue label let contextQueueLabel = DispatchQueue.currentLabel print("Context queue:",contextQueueLabel) } } } extension DataHandler: SwiftData.ModelActor {} // get current dispatch queue label extension DispatchQueue { static var currentLabel: String { return String(val...
removeFirst() }else{now = CFAbsoluteTimeGetCurrent() let resultString = "操作开始时间:" + String(describing: then) + "\n结束时间:"+String(describing: now) + "\n整个操作用时:"+String(now! - then!) + "ms" DispatchQueue.main.async {self.resulttextView.text = resultString...
openvardependencies: [Operation] {get}; 在当前操作开始执行之前完成执行的所有操作对象数组。 OperationQueue头文件 extension OperationQueue {publicclasslet defaultMaxConcurrentOperationCount: Int } @available(iOS2.0, *) openclassOperationQueue : NSObject { ...
// MARK: - Targrt Actionextension HQMainViewController{// MARK: - 登录监听方法@objc fileprivate funclogin(n:Notification){print("用户登录通知 \(n)")ifn.object!=nil{SVProgressHUD.setDefaultMaskType(.gradient)SVProgressHUD.showInfo(withStatus:"登录超时,请重新登录")}DispatchQueue.main...
1、Create a serial queue 创建一个serial queue OC 代码语言:javascript 代码运行次数:0 运行 AI代码解释 dispatch_queue_t queue = dispatch_queue_create("com.leacode.gcd.serialqueue", DISPATCH_QUEUE_SERIAL); dispatch_async(queue, ^{ // 在queue线程执行 dispatch_async(dispatch_get_main_queue(), ...
func helloAsync() async -> Int { await withCheckedContinuation { continuation in DispatchQueue.global().async { continuation.resume(returning: Int(arc4random())) } } } Task.detached { print(await helloAsync()) } Task { print(await helloAsync()) } // 主线程等待 1s,防止程序提前退出导致...
This is a common concern while writing SwiftNIO applications. If it is useful to write code in a blocking style, it is highly recommended that you dispatch work to a different thread when you're done with it in your pipeline. Bootstrap ...
playerPub.addPeriodicTimeObserver(forInterval: CMTime.init(value: 1, timescale: 2), queue: DispatchQueue.main) { (time) in let currentTime = self.playerPub.currentTime() //获取当前播放时间 let totalTime = self.playerPub.currentItem?.duration //获取当总播放时间 let progress = CMTimeGetSecond...