timer

Objective C equivalent to javascripts setTimeout?

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The performSelector: family has its limitations. Here is the closest setTimeout equivalent: dispatch_time_t delay = dispatch_time(DISPATCH_TIME_NOW, NSEC_PER_SEC * 0.5); dispatch_after(delay, dispatch_get_main_queue(), ^(void){ // do work in the UI thread here }); EDIT: A couple of projects that provide syntactic sugar and the ability to cancel execution (clearTimeout): https://github.com/Spaceman-Labs/Dispatch-Cancel https://gist.github.com/zwaldowski/955123

Creating a background timer to run asynchronously

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// Create a 30 min timer timer = new System.Timers.Timer(1800000); // Hook up the Elapsed event for the timer. timer.Elapsed += OnTimedEvent; timer.Enabled = true; … private static void OnTimedEvent(object source, ElapsedEventArgs e) { // do stuff } with the usual caveats of: timer won’t be hugely accurate and might need to GC.KeepAlive(timer) See also: … Read more

Spawning threads in a JSF managed bean for scheduled tasks using a timer

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Introduction As to spawning a thread from inside a JSF managed bean, it would only make sense if you want to be able to reference it in your views by #{managedBeanName} or in other managed beans by @ManagedProperty(“#{managedBeanName}”). You should only make sure that you implement @PreDestroy to ensure that all those threads are shut … Read more

need to call a function at periodic time intervals in c++

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To complete the question, the code from @user534498 can be easily adapted to have the periodic tick interval. It’s just needed to determinate the next start time point at the beginning of the timer thread loop and sleep_until that time point after executing the function. #include <iostream> #include <chrono> #include <thread> #include <functional> void timer_start(std::function<void(void)> … Read more

Windows service with timer

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First approach with Windows Service is not easy.. A long time ago, I wrote a C# service. This is the logic of the Service class (tested, works fine): namespace MyServiceApp { public class MyService : ServiceBase { private System.Timers.Timer timer; protected override void OnStart(string[] args) { this.timer = new System.Timers.Timer(30000D); // 30000 milliseconds = 30 … Read more

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