* Add LocklessQueueTests. One Test is commented out because it fails. It should probably work.. but I'm awaiting clarification.

1 files changed, 147 insertions, 0 deletions

diff --git a/OpenSim/Framework/Tests/LocklessQueueTests.cs b/OpenSim/Framework/Tests/LocklessQueueTests.cs
new file mode 100644
index 0000000..e34f767
--- /dev/null
+++ b/OpenSim/Framework/Tests/LocklessQueueTests.cs
@@ -0,0 +1,147 @@
+using System;
+using NUnit.Framework;
+using System.Threading;
+
+namespace OpenSim.Framework.Tests
+{
+    [TestFixture]
+    public class LocklessQueueTests
+    {
+        public LocklessQueue<int> sharedQueue;
+        [SetUp]
+        public void build()
+        {
+            sharedQueue = new LocklessQueue<int>();
+            
+        }
+
+        [Test]
+        public void EnqueueDequeueTest()
+        {
+            sharedQueue.Enqueue(1);
+            int dequeue;
+            sharedQueue.Dequeue(out dequeue);
+            Assert.That(dequeue == 1, "Enqueued 1.   Dequeue should also be 1");
+            Assert.That(sharedQueue.Count == 0, "We Dequeued the last item, count should be 0");
+
+        }
+
+        [Test]
+        public void ThreadedSimpleEnqueueDequeueTest()
+        {
+            int loopamountA = 5000;
+            int loopamountB = 5000;
+            int loopamountC = 5000;
+            int loopamountD = 5000;
+
+            threadObject1 obj1 = new threadObject1(this, loopamountA);
+            threadObject1 obj2 = new threadObject1(this, loopamountB);
+            threadObject1 obj3 = new threadObject1(this, loopamountC);
+            threadObject1 obj4 = new threadObject1(this, loopamountD);
+            for (int i=0;i<1;i++)
+            {
+                sharedQueue.Enqueue(i);
+            }
+
+            Thread thr = new Thread(obj1.thread1Action);
+            Thread thr2 = new Thread(obj2.thread1Action);
+            Thread thr3 = new Thread(obj3.thread1Action);
+            Thread thr4 = new Thread(obj4.thread1Action);
+            thr.Start();
+            thr2.Start();
+            thr3.Start();
+            thr4.Start();
+
+            thr.Join();
+            thr2.Join();
+            thr3.Join();
+            thr4.Join();
+
+            Assert.That(sharedQueue.Count == 1);
+            int result = 0;
+            sharedQueue.Dequeue(out result);
+            Assert.That(result == loopamountD + loopamountC + loopamountB + loopamountA, "Threaded Result test failed.  Expected the sum of all of the threads adding to the item in the queue.  Got {0}, Expected {1}", result, loopamountD + loopamountC + loopamountB + loopamountA);
+
+        }
+
+        /* This test fails.   Need clarification if this should work
+        [Test]
+        public void ThreadedAdvancedEnqueueDequeueTest()
+        {
+            int loopamountA = 5000;
+            int loopamountB = 5000;
+            int loopamountC = 5000;
+            int loopamountD = 5000;
+
+            threadObject1 obj1 = new threadObject1(this, loopamountA);
+            threadObject2 obj2 = new threadObject2(this, loopamountB);
+            threadObject1 obj3 = new threadObject1(this, loopamountC);
+            threadObject2 obj4 = new threadObject2(this, loopamountD);
+            for (int i = 0; i < 1; i++)
+            {
+                sharedQueue.Enqueue(i);
+            }
+
+            Thread thr = new Thread(obj1.thread1Action);
+            Thread thr2 = new Thread(obj2.thread1Action);
+            Thread thr3 = new Thread(obj3.thread1Action);
+            Thread thr4 = new Thread(obj4.thread1Action);
+            thr.Start();
+            thr2.Start();
+            thr3.Start();
+            thr4.Start();
+
+            thr.Join();
+            thr2.Join();
+            thr3.Join();
+            thr4.Join();
+
+            Assert.That(sharedQueue.Count == 1);
+            int result = 0;
+            sharedQueue.Dequeue(out result);
+            Assert.That(result == loopamountA - loopamountB + loopamountC - loopamountD, "Threaded Result test failed.  Expected the sum of all of the threads adding to the item in the queue.  Got {0}, Expected {1}", result, loopamountA - loopamountB + loopamountC - loopamountD);
+
+        }
+         */
+    }
+    // Dequeue one from the locklessqueue add one to it and enqueue it again.
+    public class threadObject1
+    {
+        private LocklessQueueTests m_tests;
+        private int m_loopamount = 0;
+        public threadObject1(LocklessQueueTests tst, int loopamount)
+        {
+            m_tests = tst;
+            m_loopamount = loopamount;
+        }
+        public void thread1Action(object o)
+        {
+            for (int i=0;i<m_loopamount;i++)
+            {
+                int j = 0;
+                m_tests.sharedQueue.Dequeue(out j);
+                m_tests.sharedQueue.Enqueue(++j);
+            }
+        }
+    }
+    // Dequeue one from the locklessqueue subtract one from it and enqueue it again.
+    public class threadObject2
+    {
+        private LocklessQueueTests m_tests;
+        private int m_loopamount = 0;
+        public threadObject2(LocklessQueueTests tst, int loopamount)
+        {
+            m_tests = tst;
+            m_loopamount = loopamount;
+        }
+        public void thread1Action(object o)
+        {
+            for (int i = 0; i < m_loopamount; i++)
+            {
+                int j = 0;
+                m_tests.sharedQueue.Dequeue(out j);
+                m_tests.sharedQueue.Enqueue(--j);
+            }
+        }
+    }
+}