public void TestRentOnDisposedPoolWithoutThrowOnUnavail()
{
using (TestDynamicPool testInst = new TestDynamicPool(0, 1))
{
testInst.Dispose();
using (var item = testInst.Rent(false))
{
Assert.IsFalse(item.IsValid);
}
}
}
public void TestRentOnDisposedPoolThrowsException()
{
using (TestDynamicPool testInst = new TestDynamicPool(0, 1))
{
testInst.Dispose();
using (var item = testInst.Rent(true))
{
Assert.IsFalse(item.IsValid);
}
}
}
public void ComplexTest2()
{
using (TestDynamicPool testInst = new TestDynamicPool(20, 100))
{
RunComplexTest(testInst, 1, 100000, 4, false);
RunComplexTest(testInst, Environment.ProcessorCount, 2000000, 4, false);
RunComplexTest(testInst, Environment.ProcessorCount, 1000000, 12, false);
testInst.Dispose();
Assert.AreEqual(testInst.ElementsCreated, testInst.ElementsDestroyed, "ElementsCreated != ElementsDestroyed");
}
}
public void WaitForElementReleaseNotBlockAfterStop()
{
using (TestDynamicPool testInst = new TestDynamicPool(0, 10))
{
using (var item = testInst.Rent())
{
Assert.IsTrue(item.IsValid);
}
testInst.Dispose(DisposeFlags.WaitForElementsRelease);
}
}
public void ComplexConcurrentUseWithTimeout()
{
using (TestDynamicPool testInst = new TestDynamicPool(0, 1))
{
RunConcurrentUseWithTimeout(testInst, 2, 2000, 1, 1, 1000, true);
RunConcurrentUseWithTimeout(testInst, Environment.ProcessorCount, 2000, 2, 1, 1000, true);
RunConcurrentUseWithTimeout(testInst, 2 * Environment.ProcessorCount, 3000, 2, 1, 1000, true);
RunConcurrentUseWithTimeout(testInst, 4 * Environment.ProcessorCount, 4000, 2, 1, 1000, true);
RunConcurrentUseWithTimeout(testInst, 4 * Environment.ProcessorCount, 2000, 4, 4, 4, true);
testInst.Dispose();
Assert.AreEqual(testInst.ElementsCreated, testInst.ElementsDestroyed, "ElementsCreated != ElementsDestroyed");
}
}
public void TestDisposeCancelWaiters()
{
using (TestDynamicPool testInst = new TestDynamicPool(0, 1))
{
Task.Delay(400).ContinueWith(t => testInst.Dispose());
using (var item1 = testInst.Rent())
{
using (var item2 = testInst.Rent())
{
}
}
}
}
public void TestDisposeCancelWaitersWithoutException()
{
using (TestDynamicPool testInst = new TestDynamicPool(0, 1))
{
Task.Delay(400).ContinueWith(t => testInst.Dispose());
using (var item1 = testInst.Rent(false))
{
using (var item2 = testInst.Rent(false))
{
Assert.IsTrue(item1.IsValid);
Assert.IsFalse(item2.IsValid);
}
}
}
}
public void WaitForElementReleaseWaits()
{
using (TestDynamicPool testInst = new TestDynamicPool(0, 10))
{
int elementRented = 0;
int elementReleased = 0;
Task.Run(() =>
{
using (var item = testInst.Rent())
{
Interlocked.Increment(ref elementRented);
Thread.Sleep(250);
}
Interlocked.Increment(ref elementReleased);
});
SpinWait.SpinUntil(() => Volatile.Read(ref elementRented) == 1);
testInst.Dispose(DisposeFlags.WaitForElementsRelease);
TimingAssert.AreEqual(10000, 1, () => Volatile.Read(ref elementReleased));
}
}
private void RunConcurrentUseWithDispose(int maxPoolElemCount, int threadCount, int opCount, bool faultElements = true)
{
using (TestDynamicPool testInst = new TestDynamicPool(0, maxPoolElemCount))
{
Thread[] threads = new Thread[threadCount];
Barrier startBar = new Barrier(threadCount + 1);
int totalExecutedOpCount = 0;
Action thAct = () =>
{
Random localRand = new Random(Thread.CurrentThread.ManagedThreadId + Environment.TickCount);
startBar.SignalAndWait();
try
{
while (true)
{
int curSpinTime = localRand.Next(0, 2000);
Interlocked.Increment(ref totalExecutedOpCount);
using (var el = testInst.Rent(60 * 1000, throwOnUnavail: true))
{
if (faultElements && localRand.Next(10) == 0)
{
el.Element.MakeInvalid();
}
if (curSpinTime > 1000)
{
Thread.Sleep(0);
}
else
{
SpinWaitHelper.SpinWait(curSpinTime);
}
}
}
}
catch (ObjectDisposedException)
{
}
catch (CantRetrieveElementException)
{
}
};
for (int i = 0; i < threads.Length; i++)
{
threads[i] = new Thread(new ThreadStart(thAct));
}
for (int i = 0; i < threads.Length; i++)
{
threads[i].Start();
}
startBar.SignalAndWait();
while (Volatile.Read(ref totalExecutedOpCount) < opCount)
{
Thread.Sleep(1);
}
testInst.Dispose();
for (int i = 0; i < threads.Length; i++)
{
threads[i].Join();
}
Assert.AreEqual(testInst.ElementCount, testInst.FreeElementCount, "testInst.ElementCount != testInst.FreeElementCount");
Assert.AreEqual(testInst.ElementsCreated, testInst.ElementsDestroyed, "ElementsCreated != ElementsDestroyed");
}
}
