public void TestSilentTakeCancellation()
{
ThreadPoolGlobalQueue q = new ThreadPoolGlobalQueue(100);
CancellationTokenSource cSrc = new CancellationTokenSource();
bool takeCompleted = false;
bool takeResult = false;
ThreadPoolWorkItem takenItem = null;
int startedFlag = 0;
Task.Run(() =>
{
Interlocked.Exchange(ref startedFlag, 1);
var res = q.TryTake(out takenItem, -1, cSrc.Token, false);
Volatile.Write(ref takeResult, res);
Volatile.Write(ref takeCompleted, true);
});
TimingAssert.IsTrue(5000, () => Volatile.Read(ref startedFlag) == 1);
Thread.Sleep(100);
Assert.IsFalse(takeCompleted);
cSrc.Cancel();
TimingAssert.IsTrue(5000, () => Volatile.Read(ref takeCompleted));
Assert.IsFalse(takeResult);
Assert.IsTrue(q.TryAdd(new TestThreadPoolItem(1), 0, CancellationToken.None));
Assert2.AreEqual(1, q.Take());
Assert.AreEqual(0, q.OccupiedNodesCount);
Assert.AreEqual(100, q.FreeNodesCount);
}
public void TestSimpleAddTake()
{
ThreadPoolGlobalQueue q = new ThreadPoolGlobalQueue(100);
Assert.IsTrue(q.TryAdd(new TestThreadPoolItem(10), 0, CancellationToken.None));
ThreadPoolWorkItem res = null;
Assert.IsTrue(q.TryTake(out res, 0, CancellationToken.None, true));
Assert2.AreEqual(10, res);
}
public void TestManyAddTake()
{
ThreadPoolGlobalQueue q = new ThreadPoolGlobalQueue(100);
for (int i = 0; i < 100; i++)
{
Assert.IsTrue(q.TryAdd(new TestThreadPoolItem(i), 0, CancellationToken.None));
}
Assert.IsFalse(q.TryAdd(new TestThreadPoolItem(int.MaxValue), 0, CancellationToken.None));
for (int i = 0; i < 100; i++)
{
ThreadPoolWorkItem res = null;
Assert.IsTrue(q.TryTake(out res, 0, CancellationToken.None, true));
Assert2.AreEqual(i, res, "(TestThreadPoolItem)res == i");
}
ThreadPoolWorkItem tmp = null;
Assert.IsFalse(q.TryTake(out tmp, 0, CancellationToken.None, true));
}
private void RunComplexTest(ThreadPoolGlobalQueue q, int elemCount, int thCount)
{
int atomicRandom = 0;
int trackElemCount = elemCount;
int addFinished = 0;
Thread[] threadsMain = new Thread[thCount];
Thread[] threadsAdditional = new Thread[thCount];
CancellationTokenSource tokSrc = new CancellationTokenSource();
List <int> global = new List <int>(elemCount);
Action additionalAction = () =>
{
Random rnd = new Random(Environment.TickCount + Interlocked.Increment(ref atomicRandom) * thCount * 2);
while (true)
{
int item = Interlocked.Decrement(ref trackElemCount);
if (item < 0)
{
break;
}
q.Add(new TestThreadPoolItem(item));
int sleepTime = rnd.Next(120);
if (sleepTime > 0)
{
SpinWaitHelper.SpinWait(sleepTime);
}
if (rnd.Next(100) == 0)
{
q.RequestCapacityExtension(50);
}
}
Interlocked.Increment(ref addFinished);
};
Action mainAction = () =>
{
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)
{
ThreadPoolWorkItem tmp = null;
if (q.TryTake(out tmp, -1, tokSrc.Token, true))
{
data.Add((TestThreadPoolItem)tmp);
}
int sleepTime = rnd.Next(100);
if (sleepTime > 0)
{
SpinWaitHelper.SpinWait(sleepTime);
}
}
}
catch (OperationCanceledException) { }
ThreadPoolWorkItem tmp2;
while (q.TryTake(out tmp2, 0, CancellationToken.None, true))
{
data.Add((TestThreadPoolItem)tmp2);
}
lock (global)
global.AddRange(data);
};
Task.Delay(1000).ContinueWith(t => q.RequestCapacityExtension(50));
for (int i = 0; i < threadsMain.Length; i++)
{
threadsMain[i] = new Thread(new ThreadStart(mainAction));
}
for (int i = 0; i < threadsAdditional.Length; i++)
{
threadsAdditional[i] = new Thread(new ThreadStart(additionalAction));
}
for (int i = 0; i < threadsMain.Length; i++)
{
threadsMain[i].Start();
}
for (int i = 0; i < threadsAdditional.Length; i++)
{
threadsAdditional[i].Start();
}
for (int i = 0; i < threadsAdditional.Length; i++)
{
threadsAdditional[i].Join();
}
tokSrc.Cancel();
for (int i = 0; i < threadsMain.Length; i++)
{
threadsMain[i].Join();
}
Assert.AreEqual(elemCount, global.Count);
global.Sort();
for (int i = 0; i < elemCount; i++)
{
Assert.AreEqual(i, global[i]);
}
}