sleep

What are the recommended approaches to using Thread.sleep() to speed up tests. I am testing a network library with a retry functionality when connections are dropped or timeout errors occur, etc. The library however, uses a Thread.sleep() between the retries (so it won't connect thousands times while the server is restarting). The call is slowing the unit tests significantly, and I wonder what the options are to override it. Note, I'm open to actually changing the code, or using a mocking framework to mock Thread.sleep(), but would like to hear your opinions/recommendation first. It is usually

I was playing around with the time.sleep function from python's standard library and found it inadequate for sub-ms delays. From testing I found it to actually wait 1.1-1.2 ms for a 1ms wait. Implementing a busy wait got the accuracy to within 1%. I used: def busy_wait(dt): current_time = time.time() while (time.time() < current_time+dt): pass and could get down to 0.0001 seconds before breaking 1% accuracy. The main questions I have are: Why is the sleep function so inaccurate (possibly a C issue)? Will getting a better CPU with a higher clock speed change this? Why would anyone use sleep?

Can any body explain me what is the difference among sleep() and usleep() in PHP. I have directed to use following scripts to do chat application for long pulling but in this script I am getting same effect using usleep(25000); or without usleep(25000); page1.php <script src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js" type="text/javascript"></script> <script> var lpOnComplete = function(response) { console.log(response); // do more processing lpStart(); }; var lpStart = function() { $.post('page2.php', {}, lpOnComplete, 'json'); }; $(document).ready(lpStart); </script> page2

I'm busy with making an app for an android device. And now I'm testing with some things. I want to change the background color limited times, lets say 5. Every time the background's changed, I want it to change again after 2-3 seconds. If I am using the Thread class, it loads the whole template after the Thread has finished, you can't see the color changes, but they're running in the "background" (I can see that in LogCat). I hope that there is a tutorial or an example that I can use. Thanks! I recently learned how to do this. There is a good tutorial here: http://www.vogella.com/articles

I need to add delay without using Thread.sleep() or a while loop doing nothing. The game im editing(Minecraft) clock runs on "Ticks" but they can fluctuate depending on your FPS. public void onTick() {//Called every "Tick" if(variable){ //If my variable is true boolean = true; //Setting my boolean to true /** *Doing a bunch of things. **/ //I need a delay for about one second here. boolean = false; //Setting my boolean to false; } } The reason why i need a delay is because if i dont have one the code runs too fast and misses it and does not toggle. Something like the following should give you