sleep

To clarify terminology, yield is when thread gives up its time slice. My platform of interest is POSIX threads, but I think the question is general. Suppose I have consumer/producer pattern. If I want to throttle either consumer or producer, which is better to use, sleep or yield? I am mostly interested in efficiency of using either function. The "right" way to code a producer / consumer is to have the consumer wait for the producer's data. You can achieve this by using a synchronization object such as a Mutex. The consumer will Wait on the mutex, which blocks it from executing until data is

When Mac OS X goes to sleep, due to closing a laptop or selecting "Sleep" from the Apple menu, how does it suspend an executing process? I suppose non-windowed processes are simply suspended at an arbitrary point of execution. Is that also true for Cocoa apps, or does the OS wait until control returns to the run loop dispatcher, and goes to sleep in a "known" location? Does any modern OS do that, or is it usually safe enough to simply suspend an app no matter what it is doing? I'm curious, because allowing sleep to occur at any moment means, from the app's perspective, the system clock could

I'm working on a Windows Service that's having some issues with Thread.Sleep() so I figured I would try to use a timer instead as this question recommends: Using Thread.Sleep() in a Windows Service Thing is it's not entirely clear to me how one might implement this. I believe this is the way but I just wanted to make sure: '' Inside The Service Object Dim closingGate As System.Threading.AutoResetEvent Protected Overrides Sub OnStart(ByVal args() As String) Dim worker As New Threading.Thread(AddressOf Work) worker.Start() End Sub Protected Sub Work() Dim Program = New MyProgram() closingGate =

Before I start, here is my very first little code I wrote in PowerShell :) [System.Windows.Forms.Cursor]::Position = ` New-Object System.Drawing.Point($pos.X, ($pos.Y - 1)) [System.Windows.Forms.Cursor]::Position = ` New-Object System.Drawing.Point($pos.X, $pos.Y) What do I want to achieve? Well, I want to move the mouse cursor every 4 minutes to prevent the screensaver from appearing (every second in the code above for testing). The code does really move the mouse every time one pixel up and then down immediately. The thing is, the screensaver (or idle mode of windows) is still appearing. Now

Update https://developer.apple.com/library/ios/documentation/UIKit/Reference/UIScreen_Class/index.html#//apple_ref/occ/instp/UIScreen/brightness That's the Apple Doc for controlling screen brightness. Below is the original question. I have found by using Google that I can disable the iPhone going to sleep in an application by using: application.idleTimerDisabled = YES; so the code looks like this: - (void)applicationDidFinishLaunching:(UIApplication *)application { // Override point for customization after application launch // This disables the autosleep I added this to TEST, // delete later

Today I had an interview on which I asked candidate quite usual and basic question about the difference between Thread.sleep() and Object.wait() . I expected him to answer something like like this , but he said these methods basically are the same thing, and most likely Thread.sleep is using Object.wait() inside it, but sleep itself doesn't require external lock. This is not exactly a correct answer, because in JDK 1.6 this method have following signature. public static native void sleep(long millis) throws InterruptedException; But my second thought was that it's not that ridiculous. It's

My task is to make a Button change his color every 500ms from red to black, when pressing it. This should start and stop by every push on the Button. import java.awt.*; import java.awt.event.*; import javax.swing.*; public class Button extends JButton{ public Button() { setBackground(Color.red); addMouseListener(new MouseAdapter() { public void mouseClicked(MouseEvent e) { change ^= true; while(change) { setBackground(Color.black); try { Thread.sleep(500); } catch (InterruptedException ex) {} setBackground(Color.red); } } }); } boolean change = false; } This Code doesnt work for me, I hope