// =========================
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 AddWakesUpTest(DiskQueue <int> queue, int segmentCapacity)
{
while (queue.TryAdd(100))
{
; // Fill queue
}
queue.AddForced(200);
Barrier bar = new Barrier(2);
AtomicNullableBool addResult = new AtomicNullableBool();
Task task = Task.Run(() =>
{
bar.SignalAndWait();
addResult.Value = queue.TryAdd(-100, 60000);
});
bar.SignalAndWait();
Thread.Sleep(10);
Assert.IsFalse(addResult.HasValue);
queue.Take();
Thread.Sleep(10);
Assert.IsFalse(addResult.HasValue);
for (int i = 0; i < segmentCapacity; i++)
{
int tmp = 0;
Assert.IsTrue(queue.TryTake(out tmp));
}
TimingAssert.AreEqual(10000, true, () => addResult.Value);
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 ValidateCountTest(DiskQueue <int> queue, CommonSegmentFactory <int> factory, int elemCount)
{
Barrier bar = new Barrier(2);
CancellationTokenSource cancelled = new CancellationTokenSource();
List <int> takenElems = new List <int>(elemCount + 1);
AtomicBool needSync = new AtomicBool();
Action addAction = () =>
{
int curElem = 0;
Random rnd = new Random(Environment.TickCount + Thread.CurrentThread.ManagedThreadId);
bar.SignalAndWait();
while (curElem < elemCount)
{
bool itemAdded = true;
if (rnd.Next(100) == 0)
{
queue.AddForced(curElem);
}
else if (needSync.Value)
{
itemAdded = queue.TryAdd(curElem);
}
else
{
queue.Add(curElem);
}
if (rnd.Next(100) == 0)
{
Thread.Yield();
}
SpinWaitHelper.SpinWait(rnd.Next(12));
if (itemAdded)
{
curElem++;
}
Assert.IsTrue(itemAdded || needSync.Value);
if (curElem % 1000 == 0)
{
needSync.Value = true;
}
if (needSync.Value && bar.ParticipantsRemaining == 1)
{
Assert.AreEqual(factory.SumCountFromAllocated(), queue.Count);
needSync.Value = false;
bar.SignalAndWait();
}
}
cancelled.Cancel();
};
Action takeAction = () =>
{
Random rnd = new Random(Environment.TickCount + Thread.CurrentThread.ManagedThreadId);
bar.SignalAndWait();
try
{
while (!cancelled.IsCancellationRequested)
{
takenElems.Add(queue.Take(cancelled.Token));
if (rnd.Next(100) == 0)
{
Thread.Yield();
}
SpinWaitHelper.SpinWait(rnd.Next(12));
if (needSync.Value)
{
bar.SignalAndWait(cancelled.Token);
}
}
}
catch (OperationCanceledException) { }
int item = 0;
while (queue.TryTake(out item))
{
takenElems.Add(item);
}
};
var sw = System.Diagnostics.Stopwatch.StartNew();
Task addTask = Task.Factory.StartNew(addAction, TaskCreationOptions.LongRunning);
Task takeTask = Task.Factory.StartNew(takeAction, TaskCreationOptions.LongRunning);
Task.WaitAll(addTask, takeTask);
Assert.AreEqual(elemCount, takenElems.Count);
for (int i = 0; i < takenElems.Count; i++)
{
if (i != takenElems[i])
{
Assert.AreEqual(i, takenElems[i], $"i != takenElems[i], nextItem = {takenElems[i + 1]}");
}
}
}