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POMy Queue is acting funny, any idea why?
 

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  1. POMy Queue is acting funny, any idea why?
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    <p>I wanted to do some testing with queues and using Queue.Synchronized to see how it worked out when having two threads putting stuff into a queue, and a third thread reading it out. It seemed fairly simple, but it's not working right and I'm not sure why. Probably a silly mistake on my part. There's a bit more to it though.</p> <pre><code>class Program { public int this1 = 0; static void Main(string[] args) { Tester test1 = new Tester(); Queue myQ = new Queue(); Tester.myQ = Queue.Synchronized(myQ); Thread test1_thread = new Thread(new ThreadStart(test1.test1)); Thread test1_thread2 = new Thread(new ThreadStart(test1.test1)); test1_thread.Start(); test1_thread2.Start(); int i = 0; while (i &lt;= 10) { i++; go_back_here: try { Tester.myQ.Enqueue(40); Console.WriteLine("did it"); int holding = Convert.ToInt32(Tester.myQ.Dequeue()); Console.WriteLine("reading out {0}: {1}", i); } catch { //Console.Write("e"); //goto go_back_here; } } Console.ReadLine(); } } class Tester { public static Queue myQ; public void test1() { int this1 = 0; while (this1 &lt;= 10) { Console.WriteLine("Doing something {0}", this1); myQ.Enqueue(this1); Console.WriteLine("(peek) {0}", myQ.Dequeue()); this1++; } } } </code></pre> <p>Through my own testing I've found that the two Tester threads are loading stuff into the queue fine. When my main loop would try to Dequeue it, I would get an error saying the queue was empty. I put peeks and then Dequeues in the Testing threads and they were able to show the stuff in the thread fine.</p> <p>Then I wondered if I was somehow accessing the wrong Queue from the main loop (OOP is not my forte, still learning it), so I added "Tester.myQ.Enqueue(40);" to see if I could stick something in it. My peeks/Dequeues didn't show it, but, it DID show up when I added the "did it" write line. I've run the program a ton of times and the 40 from the main loop only appears in the Testing threads' printing out of Dequeue when the "did it" is there. Never when I comment it out.</p> <p>Could someone more knowledgeable about the subject shed some light on what's going on? (and yes, I know my use of a goto is a terrible thing, I let it slide because this was supposed to be a simple test)</p>
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    1. COuh oh, you used a 'goto', are you checking for ['rapters?](http://xkcd.com/292) :)
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