// =========================
private void PeekWakesUpTest(DiskQueue <int> queue)
{
Barrier bar = new Barrier(3);
AtomicNullableBool peekResult = new AtomicNullableBool();
AtomicNullableBool peekResult2 = new AtomicNullableBool();
Task task = Task.Run(() =>
{
bar.SignalAndWait();
int item = 0;
peekResult.Value = queue.TryPeek(out item, 60000);
Assert.AreEqual(100, item);
});
Task task2 = Task.Run(() =>
{
bar.SignalAndWait();
int item = 0;
peekResult2.Value = queue.TryPeek(out item, 60000);
Assert.AreEqual(100, item);
});
bar.SignalAndWait();
Thread.Sleep(10);
Assert.IsFalse(peekResult.HasValue);
Assert.IsFalse(peekResult2.HasValue);
queue.Add(100);
TimingAssert.AreEqual(10000, true, () => peekResult.Value);
TimingAssert.AreEqual(10000, true, () => peekResult2.Value);
Task.WaitAll(task, task2);
}
// =========================
private void TimeoutWorksTest(DiskQueue <int> queue)
{
Barrier bar = new Barrier(2);
AtomicNullableBool takeResult = new AtomicNullableBool();
AtomicNullableBool peekResult = new AtomicNullableBool();
AtomicNullableBool addResult = new AtomicNullableBool();
Task task = Task.Run(() =>
{
bar.SignalAndWait();
int item = 0;
takeResult.Value = queue.TryTake(out item, 100);
peekResult.Value = queue.TryPeek(out item, 100);
while (queue.TryAdd(-1))
{
;
}
addResult.Value = queue.TryAdd(100, 100);
});
bar.SignalAndWait();
TimingAssert.AreEqual(10000, false, () => takeResult.Value, "take");
TimingAssert.AreEqual(10000, false, () => peekResult.Value, "peek");
TimingAssert.AreEqual(10000, false, () => addResult.Value, "Add");
task.Wait();
}
// ==============================
private void TestSimpleAddTakePeek(DiskQueue <int> queue)
{
Assert.AreEqual(0, queue.Count);
Assert.IsTrue(queue.IsEmpty);
Assert.IsTrue(queue.TryAdd(1));
Assert.AreEqual(1, queue.Count);
Assert.IsFalse(queue.IsEmpty);
int item = 0;
Assert.IsTrue(queue.TryPeek(out item));
Assert.AreEqual(1, item);
Assert.IsFalse(queue.IsEmpty);
item = 0;
Assert.IsTrue(queue.TryTake(out item));
Assert.AreEqual(1, item);
Assert.AreEqual(0, queue.Count);
Assert.IsTrue(queue.IsEmpty);
for (int i = 1; i < 1000; i++)
{
if (i % 2 == 0)
{
queue.Add(i);
}
else
{
queue.AddForced(i);
}
Assert.AreEqual(i, queue.Count);
}
int itemNum = 0;
while (queue.TryTake(out item))
{
itemNum++;
Assert.AreEqual(itemNum, item);
}
Assert.AreEqual(999, itemNum);
Assert.AreEqual(0, queue.Count);
Assert.IsTrue(queue.IsEmpty);
}
// =========================
private void CancellationWorksTest(DiskQueue <int> queue)
{
Barrier bar = new Barrier(2);
CancellationTokenSource takeSource = new CancellationTokenSource();
AtomicInt takeResult = new AtomicInt();
CancellationTokenSource peekSource = new CancellationTokenSource();
AtomicInt peekResult = new AtomicInt();
CancellationTokenSource addSource = new CancellationTokenSource();
AtomicInt addResult = new AtomicInt();
Task task = Task.Run(() =>
{
bar.SignalAndWait();
int item = 0;
try
{
takeResult.Value = queue.TryTake(out item, 60000, takeSource.Token) ? 1 : -1;
}
catch (OperationCanceledException)
{
takeResult.Value = 3;
}
try
{
peekResult.Value = queue.TryPeek(out item, 60000, peekSource.Token) ? 1 : -1;
}
catch (OperationCanceledException)
{
peekResult.Value = 3;
}
while (queue.TryAdd(-1))
{
;
}
try
{
addResult.Value = queue.TryAdd(100, 60000, addSource.Token) ? 1 : -1;
}
catch (OperationCanceledException)
{
addResult.Value = 3;
}
});
bar.SignalAndWait();
Thread.Sleep(10);
Assert.AreEqual(0, takeResult);
takeSource.Cancel();
TimingAssert.AreEqual(10000, 3, () => takeResult);
Thread.Sleep(10);
Assert.AreEqual(0, peekResult);
peekSource.Cancel();
TimingAssert.AreEqual(10000, 3, () => peekResult);
Thread.Sleep(10);
Assert.AreEqual(0, addResult);
addSource.Cancel();
TimingAssert.AreEqual(10000, 3, () => addResult);
task.Wait();
}
// ==================================
private void RunComplexTest(DiskQueue <int> q, int elemCount, int thCount)
{
int atomicRandom = 0;
int trackElemCount = elemCount;
int addFinished = 0;
Thread[] threadsTake = new Thread[thCount];
Thread[] threadsAdd = new Thread[thCount];
CancellationTokenSource tokSrc = new CancellationTokenSource();
List <int> global = new List <int>(elemCount);
Action addAction = () =>
{
Random rnd = new Random(Environment.TickCount + Interlocked.Increment(ref atomicRandom) * thCount * 2);
while (true)
{
int item = Interlocked.Decrement(ref trackElemCount);
if (item < 0)
{
break;
}
if (rnd.Next(100) == 0)
{
q.AddForced(item);
}
else
{
q.Add(item);
}
int sleepTime = rnd.Next(12);
int tmpItem = 0;
if (q.TryPeek(out tmpItem) && tmpItem == item)
{
sleepTime += 15;
}
if (sleepTime > 0)
{
SpinWaitHelper.SpinWait(sleepTime);
}
}
Interlocked.Increment(ref addFinished);
};
Action takeAction = () =>
{
Random rnd = new Random(Environment.TickCount + Interlocked.Increment(ref atomicRandom) * thCount * 2);
List <int> data = new List <int>();
try
{
while (Volatile.Read(ref addFinished) < thCount)
{
int tmp = 0;
if (q.TryTake(out tmp, -1, tokSrc.Token))
{
data.Add((int)tmp);
}
int sleepTime = rnd.Next(12);
if (sleepTime > 0)
{
SpinWaitHelper.SpinWait(sleepTime);
}
}
}
catch (OperationCanceledException) { }
int tmp2;
while (q.TryTake(out tmp2))
{
data.Add((int)tmp2);
}
lock (global)
global.AddRange(data);
};
for (int i = 0; i < threadsTake.Length; i++)
{
threadsTake[i] = new Thread(new ThreadStart(takeAction));
}
for (int i = 0; i < threadsAdd.Length; i++)
{
threadsAdd[i] = new Thread(new ThreadStart(addAction));
}
for (int i = 0; i < threadsTake.Length; i++)
{
threadsTake[i].Start();
}
for (int i = 0; i < threadsAdd.Length; i++)
{
threadsAdd[i].Start();
}
for (int i = 0; i < threadsAdd.Length; i++)
{
threadsAdd[i].Join();
}
tokSrc.Cancel();
for (int i = 0; i < threadsTake.Length; i++)
{
threadsTake[i].Join();
}
Assert.AreEqual(elemCount, global.Count);
global.Sort();
for (int i = 0; i < elemCount; i++)
{
Assert.AreEqual(i, global[i]);
}
}
