[Category("RaceToDeadLock")] // This test creates a race condition, that when resolved sequentially will be stuck
public void ManualResetEventSlim_SetAfterDisposeTest()
{
var mre = new ManualResetEventSlim();
ParallelTestHelper.Repeat(delegate
{
Exception disp = null, setting = null;
var evt = new CountdownEvent(2);
var evtFinish = new CountdownEvent(2);
Task.Factory.StartNew(delegate
{
try
{
evt.Signal();
evt.Wait(1000);
mre.Dispose();
}
catch (Exception e)
{
disp = e;
}
evtFinish.Signal();
});
Task.Factory.StartNew(delegate
{
try
{
evt.Signal();
evt.Wait(1000);
mre.Set();
}
catch (Exception e)
{
setting = e;
}
evtFinish.Signal();
});
var bb = evtFinish.Wait(1000);
if (!bb)
{
Assert.AreEqual(true, evtFinish.IsSet);
}
Assert.IsTrue(bb, "#0");
Assert.IsNull(disp, "#1");
Assert.IsNull(setting, "#2");
evt.Dispose();
evtFinish.Dispose();
});
}
public void SetAfterDisposeTest()
{
ParallelTestHelper.Repeat
(
() =>
{
var countdownEvent = new CountdownEvent[2];
using (countdownEvent[0] = new CountdownEvent(2))
{
using (countdownEvent[1] = new CountdownEvent(2))
{
Exception exception = null, setting = null;
ThreadPool.QueueUserWorkItem(delegate
{
try
{
countdownEvent[0].Signal();
countdownEvent[0].Wait(1000);
_mre.Dispose();
}
catch (Exception e)
{
exception = e;
}
countdownEvent[1].Signal();
});
ThreadPool.QueueUserWorkItem(delegate
{
try
{
countdownEvent[0].Signal();
countdownEvent[0].Wait(1000);
_mre.Set();
}
catch (Exception e)
{
setting = e;
}
countdownEvent[1].Signal();
});
countdownEvent[1].Wait();
Assert.IsNull(exception, "#1");
Assert.IsNull(setting, "#2");
countdownEvent[0].Dispose();
countdownEvent[1].Dispose();
}
}
}
);
}
public void SetAfterDisposeTest()
{
ParallelTestHelper.Repeat(delegate
{
Exception disp = null, setting = null;
var evt = new CountdownEvent(2);
var evtFinish = new CountdownEvent(2);
ThreadPool.QueueUserWorkItem(delegate
{
try
{
evt.Signal();
evt.Wait(1000);
_mre.Dispose();
}
catch (Exception e)
{
disp = e;
}
evtFinish.Signal();
});
ThreadPool.QueueUserWorkItem(delegate
{
try
{
evt.Signal();
evt.Wait(1000);
_mre.Set();
}
catch (Exception e)
{
setting = e;
}
evtFinish.Signal();
});
var bb = evtFinish.Wait(1000);
if (!bb)
{
Assert.AreEqual(true, evtFinish.IsSet);
}
Assert.IsTrue(bb, "#0");
Assert.IsNull(disp, "#1");
Assert.IsNull(setting, "#2");
evt.Dispose();
evtFinish.Dispose();
});
}
public void RemoveParallelTest()
{
ParallelTestHelper.Repeat
(
() =>
{
var map = Setup();
var index = 0;
var r1 = false;
var r2 = false;
var r3 = false;
ParallelTestHelper.ParallelStressTest
(
() =>
{
var own = Interlocked.Increment(ref index);
switch (own)
{
case 1:
r1 = map.TryRemove("foo", out _);
break;
case 2:
r2 = map.TryRemove("bar", out _);
break;
case 3:
r3 = map.TryRemove("foobar", out _);
break;
default:
break;
}
},
3
);
Assert.AreEqual(0, map.Count);
Assert.IsTrue(r1, "1");
Assert.IsTrue(r2, "2");
Assert.IsTrue(r3, "3");
Assert.IsFalse(map.TryGetValue("foo", out var value), "#1b " + value);
Assert.IsFalse(map.TryGetValue("bar", out value), "#2b");
Assert.IsFalse(map.TryGetValue("foobar", out value), "#3b");
}
);
}
public void ConcurrentCancelLinkedTokenSourceWhileDisposing()
{
ParallelTestHelper.Repeat
(
() =>
{
var src = new CancellationTokenSource[1];
using (src[0] = new CancellationTokenSource())
{
var linked = CancellationTokenSource.CreateLinkedTokenSource(src[0].Token);
var countdownEvent = new CountdownEvent[1];
using (countdownEvent[0] = new CountdownEvent(2))
{
var t1 = new Thread
(
() =>
{
if (!countdownEvent[0].Signal())
{
countdownEvent[0].Wait(200);
}
src[0].Cancel();
}
);
var t2 = new Thread
(
() =>
{
if (!countdownEvent[0].Signal())
{
countdownEvent[0].Wait(200);
}
linked.Dispose();
}
);
t1.Start();
t2.Start();
t1.Join();
t2.Join();
}
}
},
500
);
}
public void SetAfterDisposeTest() // TODO:Review
{
ParallelTestHelper.Repeat(delegate
{
Exception disp = null, setting = null;
var evt = new CountdownEvent(2);
var evtFinish = new CountdownEvent(2);
ThreadPool.QueueUserWorkItem(delegate
{
try
{
evt.Signal();
evt.Wait(1000);
_mre.Dispose();
}
catch (Exception e)
{
disp = e;
}
evtFinish.Signal();
});
ThreadPool.QueueUserWorkItem(delegate
{
try
{
evt.Signal();
evt.Wait(1000);
_mre.Set();
}
catch (Exception e)
{
setting = e;
}
evtFinish.Signal();
});
evtFinish.Wait();
Assert.IsNull(disp, "#1");
Assert.IsNull(setting, "#2");
evt.Dispose();
evtFinish.Dispose();
});
}
public void AddCountSignalStressTestCase()
{
int count = 0;
ParallelTestHelper.ParallelStressTest(evt, delegate(CountdownEvent e) {
int num = Interlocked.Increment(ref count);
if (num % 2 == 0)
{
e.AddCount();
}
else
{
e.Signal();
}
}, 7);
Assert.AreEqual(4, evt.CurrentCount, "#1");
Assert.IsFalse(evt.IsSet, "#2");
}
public void ConcurrentCancelLinkedTokenSourceWhileDisposing() // TODO: Review
{
ParallelTestHelper.Repeat(delegate
{
using (var src = new CancellationTokenSource())
{
var linked = CancellationTokenSource.CreateLinkedTokenSource(src.Token);
using (var cntd = new CountdownEvent(2))
{
var t1 = new Thread(() =>
{
if (!cntd.Signal())
{
cntd.Wait(200);
}
src.Cancel();
});
var t2 = new Thread(() =>
{
if (!cntd.Signal())
{
cntd.Wait(200);
}
linked.Dispose();
});
t1.Start();
t2.Start();
#if TARGETS_NET || GREATERTHAN_NETCOREAPP11 || GREATERTHAN_NETSTANDARD16
t1.Join(500);
t2.Join(500);
#else
t1.Join();
t2.Join();
#endif
}
}
}, 500);
}
public static void Main(string[] args)
{
int iterations = 200;
if (args.Length > 0)
{
iterations = Int32.Parse(args [0]);
}
ParallelTestHelper.Repeat(delegate {
int currentCount = 0;
bool fail = false;
SpinLockWrapper wrapper = new SpinLockWrapper();
ParallelTestHelper.ParallelStressTest(wrapper, delegate {
bool taken = false;
wrapper.Lock.Enter(ref taken);
//wrapper.Lock.TryEnter (200,ref taken);
int current = currentCount++;
if (current != 0)
{
fail = true;
}
SpinWait sw = new SpinWait();
for (int i = 0; i < 200; i++)
{
sw.SpinOnce();
}
currentCount -= 1;
wrapper.Lock.Exit();
}, 4);
if (fail)
{
Environment.Exit(1);
}
}, iterations);
Environment.Exit(0);
}
public void StressNonZeroTest()
{
ParallelTestHelper.Repeat(delegate {
ParallelTestHelper.ParallelStressTest(snzi, (s) => {
snzi.Increment();
for (int i = 0; i < 1; i++)
{
if (i % 2 == 0)
{
snzi.Increment();
}
else
{
snzi.Decrement();
}
}
});
Assert.IsFalse(snzi.IsSet, "#1");
});
}
public void AddParallelWithoutDuplicateTest()
{
ParallelTestHelper.Repeat
(
() =>
{
var map = Setup();
var index = 0;
ParallelTestHelper.ParallelStressTest
(
() =>
{
var own = Interlocked.Increment(ref index);
while (!map.TryAdd("monkey" + own, own))
{
// Empty
}
}, 4
);
Assert.AreEqual(7, map.Count);
Assert.IsTrue(map.TryGetValue("monkey1", out var value), "#1");
Assert.AreEqual(1, value, "#1b");
Assert.IsTrue(map.TryGetValue("monkey2", out value), "#2");
Assert.AreEqual(2, value, "#2b");
Assert.IsTrue(map.TryGetValue("monkey3", out value), "#3");
Assert.AreEqual(3, value, "#3b");
Assert.IsTrue(map.TryGetValue("monkey4", out value), "#4");
Assert.AreEqual(4, value, "#4b");
}
);
}
public void StressTryPeekTestCase()
{
ParallelTestHelper.Repeat
(
delegate
{
var queue = new ConcurrentQueue <object>();
queue.Enqueue(new object());
const int Threads = 10;
var threadCounter = 0;
var success = true;
ParallelTestHelper.ParallelStressTest
(
() =>
{
var threadId = Interlocked.Increment(ref threadCounter);
object temp;
if (threadId < Threads)
{
while (queue.TryPeek(out temp))
{
success &= temp != null;
}
}
else
{
queue.TryDequeue(out temp);
}
}, Threads
);
Assert.IsTrue(success, "TryPeek returned unexpected null value.");
}, 10
);
}
public void WaitTest()
{
var count = 0;
var s = false;
ParallelTestHelper.ParallelStressTest
(
() =>
{
if (Interlocked.Increment(ref count) % 2 == 0)
{
Thread.Sleep(50);
for (var i = 0; i < 10; i++)
{
if (i % 2 == 0)
{
_mre.Reset();
}
else
{
_mre.Set();
}
}
}
else
{
_mre.Wait();
s = true;
}
},
2
);
Assert.IsTrue(s, "#1");
Assert.IsTrue(_mre.IsSet, "#2");
}
public void WaitTestCase()
{
int count = 0;
bool s = false;
ParallelTestHelper.ParallelStressTest(evt, delegate(CountdownEvent e) {
if (Interlocked.Increment(ref count) % 2 == 0)
{
Thread.Sleep(100);
while (!e.IsSet)
{
e.Signal();
}
}
else
{
e.Wait();
s = true;
}
}, 3);
Assert.IsTrue(s, "#1");
Assert.IsTrue(evt.IsSet, "#2");
}
public void ConcurrentCancelLinkedTokenSourceWhileDisposing()
{
ParallelTestHelper.Repeat(delegate
{
using (var src = new CancellationTokenSource())
{
var linked = CancellationTokenSource.CreateLinkedTokenSource(src.Token);
using (var cntd = new CountdownEvent(2))
{
var t1 = new Thread(() =>
{
if (!cntd.Signal())
{
cntd.Wait(200);
}
src.Cancel();
});
var t2 = new Thread(() =>
{
if (!cntd.Signal())
{
cntd.Wait(200);
}
linked.Dispose();
});
t1.Start();
t2.Start();
t1.Join(500);
t2.Join(500);
}
}
}, 500);
}
public static void RemoveStressTest(IProducerConsumerCollection <int> coll, CheckOrderingType order)
{
ParallelTestHelper.Repeat(delegate {
const int count = 10;
const int threads = 5;
const int delta = 5;
for (int i = 0; i < (count + delta) * threads; i++)
{
while (!coll.TryAdd(i))
{
;
}
}
bool state = true;
Assert.AreEqual((count + delta) * threads, coll.Count, "#0");
ParallelTestHelper.ParallelStressTest(coll, (q) => {
bool s = true;
int t;
for (int i = 0; i < count; i++)
{
s &= coll.TryTake(out t);
// try again in case it was a transient failure
if (!s && coll.TryTake(out t))
{
s = true;
}
}
if (!s)
{
state = false;
}
}, threads);
Assert.IsTrue(state, "#1");
Assert.AreEqual(delta * threads, coll.Count, "#2");
string actual = string.Empty;
int temp;
while (coll.TryTake(out temp))
{
actual += temp.ToString();;
}
IEnumerable <int> range = Enumerable.Range(order == CheckOrderingType.Reversed ? 0 : count * threads, delta * threads);
if (order == CheckOrderingType.Reversed)
{
range = range.Reverse();
}
string expected = range.Aggregate(string.Empty, (acc, v) => acc + v);
if (order == CheckOrderingType.DontCare)
{
CollectionAssert.AreEquivalent(expected, actual, "#3");
}
else
{
Assert.AreEqual(expected, actual, "#3");
}
}, 1000);
}
