timer

问题 I want to know how to stop a specified function's execution within a specified time in java. For example: I may call a function called print_data(). If it takes more time to execute, I will have to stop that function's execution. Is it possible to stop the execution like this? Thanks in advance 回答1: You could add some checks to your function: save the timestamp when function started working and then periodically checking that inside the function, throwing an exception if function takes too

问题 I am developing an application using Processing.js. At each step in the drawing loop I increment the number of frames by one frame++ . I want to know how much time has passed. Currently to get the time passed (knowing that my application is set to run on 60FPS) I do like so: time=frame/60 . But this only works if the application always run at exactly FPS and we all know that's not the case cause it depends on the users hardware. I want the timer to be pretty accurate (having only like 0.0001s

问题 I have a Console App and in the main method, I have code like this: Timer time = new Timer(seconds * 1000); //to milliseconds time.Enabled = true; time.Elapsed += new ElapsedEventHandler(time_Elapsed); I only want the timer to run once so my idea is that I should stop the timer in the time_Elapsed method. However, since my timer exists in Main(), I can't access it. 回答1: You have access to the Timer inside of the timer_Elapsed method: public void timer_Elapsed(object sender, ElapsedEventArgs e

问题 I have looked at the Task and Timer class API's, but could not find information on how to schedule a Task for future execution. Using the Timer class, I can schedule threads for future execution, but I need to schedule Task s. Task has .Delay(...) methods, but not sure delay is similar to scheduling. Edit(clarification): I want to start tasks after x minutes. 回答1: You should use Task.Delay (which internally is implemented using a System.Threading.Timer ): async Task Foo() { await Task.Delay

问题 How do I create a timer in C and after the time expires ,I should be able to call a callback function . The platform is windows. Can someone guide me Regards, Mithun 回答1: Take a look at SetTimer function. UINT_PTR timerid = SetTimer(NULL, 0, milliseconds, &callback); 回答2: alarm does this (on POSIX platforms). 回答3: From Timers and default actions: /* ** TIMEGETC.C - waits for a given number of seconds for the user to press ** a key. Returns the key pressed, or EOF if time expires ** ** by Bob

问题 Does Linux/Unix/Posix provide an API to user-space applications to access a monotonically increasing clock, with centisecond to millisecond accuracy? On Linux, /proc/uptime provides a string-based representation of a floating point number of the number of seconds the system has been up. gettimeofday(2) does not provide a monotonically increasing clock. I could use getitimer(2) in the ITIMER_REAL time domain, set the timer to start at the (platform dependent) maximum and ignore the signal

问题 I am using Thread.Sleep in windows form C#. using which results in Not responding of Form. Using Timer is also not serving my purpose. Sample Code: if(......) // There are many if with difrent components and many Thread.sleep { button.visible=true; Thread.sleep(1000); GotoMeasurementMode(3000); Thread.sleep(3000); query(device.Text); Thread.sleep(7000); StopMeasurement(); Thread.sleep(4000); } Using above Code results in form irresponsiveness. Using Timer gonna result in Nested Timers. and

问题 I am writing a social cloud game for Android and using PHP on the server. Almost all aspects of the game will be user or user-device driven, so most of the time the device will send a request to the server and the server will, in turn, send a response to the device. Sometimes the server will also send out push messages to the devices, but generally in response to one user's device contacting the server. There is one special case, however, where a user can set a "timer" and, after the given

问题 using System; using System.Data.SQLite; using System.Drawing; using System.Timers; using System.Windows.Forms; using Tulpep.NotificationWindow; public partial class Form1 : Form { System.Timers.Timer timer = null; public Form1() { InitializeComponent(); } private void buttonStart_Click(object sender, EventArgs e) { if (timer == null) { timer = new System.Timers.Timer(); timer.Elapsed += new System.Timers.ElapsedEventHandler(ObjTimer_Elapsed); timer.Interval = 10000; timer.Start(); } } private

问题 This question already has answers here : Swift wants argument of #selector to be exposed to Objective-C (3 answers) Closed 3 years ago . I make a simple cronometer app, but, now I want make it better, and I would like to write a class for the cronometer control: class Cronometer{ private var counter:Int = 0 private var timer:Timer = Timer() private var state:Bool = true func initCronometer(){ if self.state{ self.timer = Timer.scheduledTimer(timeInterval: 1, target: self, selector: Selector(