public async Task Sched_Task_TaskWorkItem_CurrentScheduler()
{
ActivationTaskScheduler activationScheduler = scheduler.GetWorkItemGroup(rootContext).TaskRunner;
var result0 = new TaskCompletionSource <bool>();
var result1 = new TaskCompletionSource <bool>();
Task t1 = null;
scheduler.QueueWorkItem(new ClosureWorkItem(() =>
{
try
{
output.WriteLine("#0 - TaskWorkItem - SynchronizationContext.Current={0} TaskScheduler.Current={1}",
SynchronizationContext.Current, TaskScheduler.Current);
Assert.Equal(activationScheduler, TaskScheduler.Current); //
t1 = new Task(() =>
{
output.WriteLine("#1 - new Task - SynchronizationContext.Current={0} TaskScheduler.Current={1}",
SynchronizationContext.Current, TaskScheduler.Current);
Assert.Equal(activationScheduler, TaskScheduler.Current); // "TaskScheduler.Current #1"
result1.SetResult(true);
});
t1.Start();
result0.SetResult(true);
}
catch (Exception exc)
{
result0.SetException(exc);
}
}), rootContext);
await result0.Task.WithTimeout(TimeSpan.FromMinutes(1));
Assert.True(result0.Task.Exception == null, "Task-0 should not throw exception: " + result0.Task.Exception);
Assert.True(result0.Task.Result, "Task-0 completed");
Assert.NotNull(t1); // Task-1 started
await result1.Task.WithTimeout(TimeSpan.FromMinutes(1));
// give a minimum extra chance to yield after result0 has been set, as it might not have finished the t1 task
await t1.WithTimeout(TimeSpan.FromMilliseconds(1));
Assert.True(t1.IsCompleted, "Task-1 completed");
Assert.False(t1.IsFaulted, "Task-1 faulted: " + t1.Exception);
Assert.True(result1.Task.Result, "Task-1 completed");
}
public void Sched_Task_ClosureWorkItem_SpecificScheduler()
{
UnitTestSchedulingContext context = new UnitTestSchedulingContext();
OrleansTaskScheduler scheduler = TestInternalHelper.InitializeSchedulerForTesting(context);
ActivationTaskScheduler activationScheduler = scheduler.GetWorkItemGroup(context).TaskRunner;
var result0 = new TaskCompletionSource <bool>();
var result1 = new TaskCompletionSource <bool>();
Task t1 = null;
scheduler.QueueWorkItem(new ClosureWorkItem(() =>
{
try
{
Console.WriteLine("#0 - TaskWorkItem - SynchronizationContext.Current={0} TaskScheduler.Current={1}",
SynchronizationContext.Current, TaskScheduler.Current);
Assert.AreEqual(activationScheduler, TaskScheduler.Current, "TaskScheduler.Current #0");
t1 = new Task(() =>
{
Console.WriteLine("#1 - new Task - SynchronizationContext.Current={0} TaskScheduler.Current={1}",
SynchronizationContext.Current, TaskScheduler.Current);
Assert.AreEqual(scheduler, TaskScheduler.Current, "TaskScheduler.Current #1");
result1.SetResult(true);
});
t1.Start(scheduler);
result0.SetResult(true);
}
catch (Exception exc)
{
result0.SetException(exc);
}
}), context);
result0.Task.Wait(TimeSpan.FromSeconds(1));
Assert.IsTrue(result0.Task.Exception == null, "Task-0 should not throw exception: " + result0.Task.Exception);
Assert.IsTrue(result0.Task.Result, "Task-0 completed");
Assert.IsNotNull(t1, "Task-1 started");
result1.Task.Wait(TimeSpan.FromSeconds(1));
Assert.IsTrue(t1.IsCompleted, "Task-1 completed");
Assert.IsFalse(t1.IsFaulted, "Task-1 faulted: " + t1.Exception);
Assert.IsTrue(result1.Task.Result, "Task-1 completed");
}
public void Async_Task_Start_ActivationTaskScheduler()
{
ActivationTaskScheduler activationScheduler = this.scheduler.GetWorkItemGroup(this.rootContext).TaskScheduler;
int expected = 2;
bool done = false;
Task <int> t = new Task <int>(() => { done = true; return(expected); });
t.Start(activationScheduler);
int received = t.Result;
Assert.True(t.IsCompleted, "Task should have completed");
Assert.False(t.IsFaulted, "Task should not thrown exception: " + t.Exception);
Assert.True(done, "Task should be done");
Assert.Equal(expected, received);
}
public void Async_Task_Start_ActivationTaskScheduler()
{
InitSchedulerLogging();
UnitTestSchedulingContext cntx = new UnitTestSchedulingContext();
OrleansTaskScheduler masterScheduler = TestInternalHelper.InitializeSchedulerForTesting(cntx);
ActivationTaskScheduler activationScheduler = masterScheduler.GetWorkItemGroup(cntx).TaskRunner;
int expected = 2;
bool done = false;
Task<int> t = new Task<int>(() => { done = true; return expected; });
t.Start(activationScheduler);
int received = t.Result;
Assert.IsTrue(t.IsCompleted, "Task should have completed");
Assert.IsFalse(t.IsFaulted, "Task should not thrown exception: " + t.Exception);
Assert.IsTrue(done, "Task should be done");
Assert.AreEqual(expected, received, "Task did not return expected value " + expected);
}
public void Sched_SimpleFifoTest()
{
// This is not a great test because there's a 50/50 shot that it will work even if the scheduling
// is completely and thoroughly broken and both closures are executed "simultaneously"
ActivationTaskScheduler activationScheduler = this.scheduler.GetWorkItemGroup(this.rootContext).TaskScheduler;
int n = 0;
// ReSharper disable AccessToModifiedClosure
Action item1 = () => { n = n + 5; };
Action item2 = () => { n = n * 3; };
// ReSharper restore AccessToModifiedClosure
this.scheduler.QueueAction(item1, this.rootContext);
this.scheduler.QueueAction(item2, this.rootContext);
// Pause to let things run
Thread.Sleep(1000);
// N should be 15, because the two tasks should execute in order
Assert.True(n != 0, "Work items did not get executed");
Assert.Equal(15, n);
this.output.WriteLine("Test executed OK.");
}
public async Task Sched_Task_TplFifoTest()
{
// This is not a great test because there's a 50/50 shot that it will work even if the scheduling
// is completely and thoroughly broken and both closures are executed "simultaneously"
ActivationTaskScheduler activationScheduler = this.scheduler.GetWorkItemGroup(this.rootContext).TaskScheduler;
int n = 0;
// ReSharper disable AccessToModifiedClosure
Task task1 = new Task(() => { Thread.Sleep(1000); n = n + 5; });
Task task2 = new Task(() => { n = n * 3; });
// ReSharper restore AccessToModifiedClosure
task1.Start(activationScheduler);
task2.Start(activationScheduler);
await Task.WhenAll(task1, task2).WithTimeout(TimeSpan.FromSeconds(5));
// N should be 15, because the two tasks should execute in order
Assert.True(n != 0, "Work items did not get executed");
Assert.Equal(15, n);
}
public void Sched_Task_SchedulingContext()
{
UnitTestSchedulingContext context = new UnitTestSchedulingContext();
this.orleansTaskScheduler = TestInternalHelper.InitializeSchedulerForTesting(context, this.performanceMetrics, this.loggerFactory);
ActivationTaskScheduler scheduler = this.orleansTaskScheduler.GetWorkItemGroup(context).TaskRunner;
var result = new TaskCompletionSource <bool>();
Task endOfChain = null;
int n = 0;
Task wrapper = new Task(() =>
{
CheckRuntimeContext(context);
// ReSharper disable AccessToModifiedClosure
Task task1 = Task.Factory.StartNew(() =>
{
this.output.WriteLine("===> 1a ");
CheckRuntimeContext(context);
Thread.Sleep(1000);
n = n + 3;
this.output.WriteLine("===> 1b");
CheckRuntimeContext(context);
});
Task task2 = task1.ContinueWith(task =>
{
this.output.WriteLine("===> 2");
CheckRuntimeContext(context);
n = n * 5;
});
Task task3 = task2.ContinueWith(task =>
{
this.output.WriteLine("===> 3");
n = n / 5;
CheckRuntimeContext(context);
});
Task task4 = task3.ContinueWith(task =>
{
this.output.WriteLine("===> 4");
n = n - 2;
result.SetResult(true);
CheckRuntimeContext(context);
});
// ReSharper restore AccessToModifiedClosure
endOfChain = task4.ContinueWith(task =>
{
this.output.WriteLine("Done Faulted={0}", task.IsFaulted);
CheckRuntimeContext(context);
Assert.False(task.IsFaulted, "Faulted with Exception=" + task.Exception);
});
});
wrapper.Start(scheduler);
bool ok = wrapper.Wait(TimeSpan.FromSeconds(1));
if (!ok)
{
throw new TimeoutException();
}
Assert.False(wrapper.IsFaulted, "Wrapper Task Faulted with Exception=" + wrapper.Exception);
Assert.True(wrapper.IsCompleted, "Wrapper Task completed");
bool finished = result.Task.Wait(TimeSpan.FromSeconds(2));
Assert.NotNull(endOfChain); // End of chain Task created successfully
Assert.False(endOfChain.IsFaulted, "Task chain Faulted with Exception=" + endOfChain.Exception);
Assert.True(finished, "Wrapper Task completed ok");
Assert.True(n != 0, "Work items did not get executed");
Assert.Equal(1, n); // "Work items executed out of order"
}
public void Sched_AC_Current_TaskScheduler()
{
UnitTestSchedulingContext context = new UnitTestSchedulingContext();
OrleansTaskScheduler orleansTaskScheduler = orleansTaskScheduler = TestInternalHelper.InitializeSchedulerForTesting(context, this.performanceMetrics, this.loggerFactory);
ActivationTaskScheduler activationScheduler = orleansTaskScheduler.GetWorkItemGroup(context).TaskRunner;
// RuntimeContext.InitializeThread(masterScheduler);
this.mainDone = false;
var result = new TaskCompletionSource <bool>();
Task wrapper = null;
Task finalPromise = null;
orleansTaskScheduler.QueueWorkItem(new ClosureWorkItem(() =>
{
Log(1, "Outer ClosureWorkItem " + Task.CurrentId + " starting");
Assert.Equal(activationScheduler, TaskScheduler.Current); // "TaskScheduler.Current #0"
Log(2, "Starting wrapper Task");
wrapper = Task.Factory.StartNew(() =>
{
Log(3, "Inside wrapper Task Id=" + Task.CurrentId);
Assert.Equal(activationScheduler, TaskScheduler.Current); // "TaskScheduler.Current #1"
Log(4, "Wrapper Task " + Task.CurrentId + " creating AC chain");
Task promise1 = Task.Factory.StartNew(() =>
{
Log(5, "#1 Inside AC Task Id=" + Task.CurrentId);
Assert.Equal(activationScheduler, TaskScheduler.Current); // "TaskScheduler.Current #1"
SubProcess1(1);
});
Task promise2 = promise1.ContinueWith((_) =>
{
Log(6, "#2 Inside AC Task Id=" + Task.CurrentId);
Assert.Equal(activationScheduler, TaskScheduler.Current); // "TaskScheduler.Current #2"
SubProcess1(2);
});
finalPromise = promise2.ContinueWith((_) =>
{
Log(7, "#3 Inside final AC Task Id=" + Task.CurrentId);
Assert.Equal(activationScheduler, TaskScheduler.Current); // "TaskScheduler.Current #3"
SubProcess1(3);
result.SetResult(true);
});
finalPromise.Ignore();
Log(8, "Wrapper Task Id=" + Task.CurrentId + " sleeping");
Thread.Sleep(TimeSpan.FromSeconds(1));
Log(9, "Wrapper Task Id=" + Task.CurrentId + " finished");
});
Log(10, "Outer ClosureWorkItem Task Id=" + Task.CurrentId + " sleeping");
Thread.Sleep(TimeSpan.FromSeconds(1));
Log(11, "Outer ClosureWorkItem Task Id=" + Task.CurrentId + " awake");
Log(12, "Finished Outer TaskWorkItem Task Id=" + wrapper.Id);
this.mainDone = true;
}), context);
Log(13, "Waiting for ClosureWorkItem to spawn wrapper Task");
for (int i = 0; i < 5 * WaitFactor; i++)
{
if (wrapper != null)
{
break;
}
Thread.Sleep(TimeSpan.FromSeconds(1).Multiply(WaitFactor));
}
Assert.NotNull(wrapper); // Wrapper Task was not created
Log(14, "Waiting for wrapper Task Id=" + wrapper.Id + " to complete");
bool finished = wrapper.Wait(TimeSpan.FromSeconds(4 * WaitFactor));
Log(15, "Done waiting for wrapper Task Id=" + wrapper.Id + " Finished=" + finished);
if (!finished)
{
throw new TimeoutException();
}
Assert.False(wrapper.IsFaulted, "Wrapper Task faulted: " + wrapper.Exception);
Assert.True(wrapper.IsCompleted, "Wrapper Task should be completed");
Log(16, "Waiting for TaskWorkItem to complete");
for (int i = 0; i < 15 * WaitFactor; i++)
{
if (this.mainDone)
{
break;
}
Thread.Sleep(1000 * WaitFactor);
}
Log(17, "Done waiting for TaskWorkItem to complete MainDone=" + this.mainDone);
Assert.True(this.mainDone, "Main Task should be completed");
Assert.NotNull(finalPromise); // AC chain not created
Log(18, "Waiting for final AC promise to complete");
finalPromise.Wait(TimeSpan.FromSeconds(4 * WaitFactor));
Log(19, "Done waiting for final promise");
Assert.False(finalPromise.IsFaulted, "Final AC faulted: " + finalPromise.Exception);
Assert.True(finalPromise.IsCompleted, "Final AC completed");
Assert.True(result.Task.Result, "Timeout-1");
Assert.NotEqual(0, this.stageNum1); // "Work items did not get executed-1"
Assert.Equal(3, this.stageNum1); // "Work items executed out of order-1"
}
public void Sched_Task_Turn_Execution_Order()
{
// A unit test that checks that any turn is indeed run till completion before any other turn?
// For example, you have a long running main turn and in the middle it spawns a lot of short CWs (on Done promise) and StartNew.
// You test that no CW/StartNew runs until the main turn is fully done. And run in stress.
UnitTestSchedulingContext context = new UnitTestSchedulingContext();
OrleansTaskScheduler masterScheduler = this.orleansTaskScheduler = TestInternalHelper.InitializeSchedulerForTesting(context, this.performanceMetrics, this.loggerFactory);
WorkItemGroup workItemGroup = this.orleansTaskScheduler.GetWorkItemGroup(context);
ActivationTaskScheduler activationScheduler = workItemGroup.TaskRunner;
this.mainDone = false;
this.stageNum1 = this.stageNum2 = 0;
var result1 = new TaskCompletionSource <bool>();
var result2 = new TaskCompletionSource <bool>();
Task wrapper = null;
Task finalTask1 = null;
Task finalPromise2 = null;
masterScheduler.QueueWorkItem(new ClosureWorkItem(() =>
{
Log(1, "Outer ClosureWorkItem " + Task.CurrentId + " starting");
Assert.Equal(activationScheduler, TaskScheduler.Current); // "TaskScheduler.Current #0"
Log(2, "Starting wrapper Task");
wrapper = Task.Factory.StartNew(() =>
{
Log(3, "Inside wrapper Task Id=" + Task.CurrentId);
Assert.Equal(activationScheduler, TaskScheduler.Current); // "TaskScheduler.Current #1"
// Execution chain #1
Log(4, "Wrapper Task Id=" + Task.CurrentId + " creating Task chain");
Task task1 = Task.Factory.StartNew(() =>
{
Log(5, "#11 Inside sub-Task Id=" + Task.CurrentId);
Assert.Equal(activationScheduler, TaskScheduler.Current); // "TaskScheduler.Current #11"
SubProcess1(11);
});
Task task2 = task1.ContinueWith((Task task) =>
{
Log(6, "#12 Inside continuation Task Id=" + Task.CurrentId);
Assert.Equal(activationScheduler, TaskScheduler.Current); // "TaskScheduler.Current #12"
if (task.IsFaulted)
{
throw task.Exception.Flatten();
}
SubProcess1(12);
});
Task task3 = task2.ContinueWith(task =>
{
Log(7, "#13 Inside continuation Task Id=" + Task.CurrentId);
Assert.Equal(activationScheduler, TaskScheduler.Current); // "TaskScheduler.Current #13"
if (task.IsFaulted)
{
throw task.Exception.Flatten();
}
SubProcess1(13);
});
finalTask1 = task3.ContinueWith(task =>
{
Log(8, "#14 Inside final continuation Task Id=" + Task.CurrentId);
Assert.Equal(activationScheduler, TaskScheduler.Current); // "TaskScheduler.Current #14"
if (task.IsFaulted)
{
throw task.Exception.Flatten();
}
SubProcess1(14);
result1.SetResult(true);
});
// Execution chain #2
Log(9, "Wrapper Task " + Task.CurrentId + " creating AC chain");
Task promise2 = Task.Factory.StartNew(() =>
{
Log(10, "#21 Inside sub-Task Id=" + Task.CurrentId);
Assert.Equal(activationScheduler, TaskScheduler.Current); // "TaskScheduler.Current #21"
SubProcess2(21);
});
finalPromise2 = promise2.ContinueWith((_) =>
{
Log(11, "#22 Inside final continuation Task Id=" + Task.CurrentId);
Assert.Equal(activationScheduler, TaskScheduler.Current); // "TaskScheduler.Current #22"
SubProcess2(22);
result2.SetResult(true);
});
finalPromise2.Ignore();
Log(12, "Wrapper Task Id=" + Task.CurrentId + " sleeping #2");
Thread.Sleep(TimeSpan.FromSeconds(1));
Log(13, "Wrapper Task Id=" + Task.CurrentId + " finished");
});
Log(14, "Outer ClosureWorkItem Task Id=" + Task.CurrentId + " sleeping");
Thread.Sleep(TimeSpan.FromSeconds(1));
Log(15, "Outer ClosureWorkItem Task Id=" + Task.CurrentId + " awake");
Log(16, "Finished Outer ClosureWorkItem Task Id=" + wrapper.Id);
this.mainDone = true;
}), context);
Log(17, "Waiting for ClosureWorkItem to spawn wrapper Task");
for (int i = 0; i < 5 * WaitFactor; i++)
{
if (wrapper != null)
{
break;
}
Thread.Sleep(TimeSpan.FromSeconds(1).Multiply(WaitFactor));
}
Assert.NotNull(wrapper); // Wrapper Task was not created
Log(18, "Waiting for wrapper Task Id=" + wrapper.Id + " to complete");
bool finished = wrapper.Wait(TimeSpan.FromSeconds(4 * WaitFactor));
Log(19, "Done waiting for wrapper Task Id=" + wrapper.Id + " Finished=" + finished);
if (!finished)
{
throw new TimeoutException();
}
Assert.False(wrapper.IsFaulted, "Wrapper Task faulted: " + wrapper.Exception);
Assert.True(wrapper.IsCompleted, "Wrapper Task should be completed");
Log(20, "Waiting for TaskWorkItem to complete");
for (int i = 0; i < 15 * WaitFactor; i++)
{
if (this.mainDone)
{
break;
}
Thread.Sleep(1000 * WaitFactor);
}
Log(21, "Done waiting for TaskWorkItem to complete MainDone=" + this.mainDone);
Assert.True(this.mainDone, "Main Task should be completed");
Assert.NotNull(finalTask1); // Task chain #1 not created
Assert.NotNull(finalPromise2); // Task chain #2 not created
Log(22, "Waiting for final task #1 to complete");
bool ok = finalTask1.Wait(TimeSpan.FromSeconds(4 * WaitFactor));
Log(23, "Done waiting for final task #1 complete Ok=" + ok);
if (!ok)
{
throw new TimeoutException();
}
Assert.False(finalTask1.IsFaulted, "Final Task faulted: " + finalTask1.Exception);
Assert.True(finalTask1.IsCompleted, "Final Task completed");
Assert.True(result1.Task.Result, "Timeout-1");
Log(24, "Waiting for final promise #2 to complete");
finalPromise2.Wait(TimeSpan.FromSeconds(4 * WaitFactor));
Log(25, "Done waiting for final promise #2");
Assert.False(finalPromise2.IsFaulted, "Final Task faulted: " + finalPromise2.Exception);
Assert.True(finalPromise2.IsCompleted, "Final Task completed");
Assert.True(result2.Task.Result, "Timeout-2");
Assert.NotEqual(0, this.stageNum1); // "Work items did not get executed-1"
Assert.Equal(14, this.stageNum1); // "Work items executed out of order-1"
Assert.NotEqual(0, this.stageNum2); // "Work items did not get executed-2"
Assert.Equal(22, this.stageNum2); // "Work items executed out of order-2"
}