public void CompareAndSetInMultipleThreadsChangedMarkBits()
        {
            AtomicMarkable <T> ai = new AtomicMarkable <T>(one, false);
            Thread             t  = ThreadManager.StartAndAssertRegistered(
                "T1", () => { while (!ai.CompareAndSet(one, one, true, false))
                              {
                                  Thread.Sleep(Delays.Short);
                              }
                });

            Assert.IsTrue(ai.CompareAndSet(one, one, false, true));
            ThreadManager.JoinAndVerify(Delays.Long);
            Assert.IsFalse(t.IsAlive);
            Assert.AreEqual(ai.Value, one);
            Assert.IsFalse(ai.IsMarked);
        }
        public void CompareAndSet()
        {
            bool mark;
            AtomicMarkable <T> ai = new AtomicMarkable <T>(one, false);

            Assert.AreEqual(one, ai.GetValue(out mark));
            Assert.IsFalse(ai.IsMarked);
            Assert.IsFalse(mark);

            Assert.IsTrue(ai.CompareAndSet(one, two, false, false));
            Assert.AreEqual(two, ai.GetValue(out mark));
            Assert.IsFalse(mark);

            Assert.IsTrue(ai.CompareAndSet(two, m3, false, true));
            Assert.AreEqual(m3, ai.GetValue(out mark));
            Assert.IsTrue(mark);

            Assert.IsFalse(ai.CompareAndSet(two, m3, true, true));
            Assert.AreEqual(m3, ai.GetValue(out mark));
            Assert.IsTrue(mark);
        }