public static async Task AwaitDequeue3(ISequencerUC sequencer, IConcurrentQueueNotifier <string> notifier)
{
await sequencer.PointAsync(SeqPointTypeUC.Match, Insert3ItemsThrottleTestEnum.EnqueuedItemsAsyncBegin);
string item;
await notifier.EnqueuedItemsAsync();
if (!notifier.TryDequeu(out item))
{
throw new Exception("Expected data");
}
await sequencer.PointAsync(SeqPointTypeUC.Match, Insert3ItemsThrottleTestEnum.EnqueuedItemsAsyncDataItem, item);
await notifier.EnqueuedItemsAsync();
if (!notifier.TryDequeu(out item))
{
throw new Exception("Expected data");
}
await sequencer.PointAsync(SeqPointTypeUC.Match, Insert3ItemsThrottleTestEnum.EnqueuedItemsAsyncDataItem, item);
await notifier.EnqueuedItemsAsync();
if (!notifier.TryDequeu(out item))
{
throw new Exception("Expected data");
}
await sequencer.PointAsync(SeqPointTypeUC.Match, Insert3ItemsThrottleTestEnum.EnqueuedItemsAsyncDataItem, item);
await sequencer.PointAsync(SeqPointTypeUC.Match, Insert3ItemsThrottleTestEnum.EnqueuedItemsAsyncEnd);
}
public static ISequencerUC Throw(this ISequencerUC sequencer,
Func <bool> condition,
Exception innerException = null,
string message = null,
int skipStackFrames = 2,
[CallerMemberName] string callerName = "",
[CallerFilePath] string callerFileName = "",
[CallerLineNumber] int callerLineNumber = 0)
{
if (!(sequencer is SequencerRegisterUC register) || condition == null || !condition())
{
return(sequencer);
}
string msg = string.Empty;
msg += $"[{nameof(ISequencerUC)}.{nameof(Throw)}]";
msg += $"[msg: {message ?? string.Empty}]";
msg += $"[MethodName:{callerName}]";
msg += $"[Line:{callerLineNumber}]";
msg += $"[FileName:{callerFileName}]";
Exception ex = innerException != null
? new StackTraceExceptionUC(msg, skipStackFrames, innerException)
: new StackTraceExceptionUC(msg, skipStackFrames)
;
register.ExceptionRegister.RegisterException(ex);
return(sequencer);
}
public async Task AwaitAlreadyEnqueuedDataTest()
{
ISequencerUC sequencer =
SequencerUC
.Construct()
.Register(AwaitAlreadyEnqueuedDataEnum.Enqueue2ItemsBegin, new StrategyOneOnOneUC())
.Register(AwaitAlreadyEnqueuedDataEnum.Enqueue2ItemsEnd, new StrategyOneOnOneUC())
.Register(AwaitAlreadyEnqueuedDataEnum.EnqueuedItemsAsyncBegin, new StrategyOneOnOneUC())
.Register(AwaitAlreadyEnqueuedDataEnum.EnqueuedItemsAsyncEnd, new StrategyOneOnOneUC())
;
const int throttle = 3;
IConcurrentQueueNotifier <string> notifier = new ConcurrentQueueNotifier <string>(throttle);
sequencer.Run(() => Insert2Items(sequencer, notifier));
sequencer.Run(() => AwaitEnqueuedData(sequencer, notifier));
await sequencer.TestPointCompleteAsync(AwaitAlreadyEnqueuedDataEnum.Enqueue2ItemsBegin); //enqueue data
await sequencer.TestPointCompleteAsync(AwaitAlreadyEnqueuedDataEnum.Enqueue2ItemsEnd); //enqueue completed
Assert.AreEqual(2, notifier.Count());
await sequencer.TestPointCompleteAsync(AwaitAlreadyEnqueuedDataEnum.EnqueuedItemsAsyncBegin); //begin awaiting enqueued data
await sequencer.TestPointCompleteAsync(AwaitAlreadyEnqueuedDataEnum.EnqueuedItemsAsyncEnd); //enqueued data should be detected
await sequencer.WhenAll();
sequencer.TryReThrowException();
}
public async Task DoNotEnslaveAndDelayMessangerTest()
{
//The main difference, here as it should be used, but did not exist till .Net 4.5
TaskCompletionSource <object> tcs = new TaskCompletionSource <object>(TaskCreationOptions.RunContinuationsAsynchronously);
ISequencerUC sequencer =
SequencerUC
.Construct()
.Register(TCS.ReceiverInitialize, new StrategyOneOnOneUC())
.Register(TCS.ReceiverRecord, new StrategyOneOnOneUC())
.Register(TCS.MessangerSetResult, new StrategyOneOnOneUC())
;
sequencer.Run(seq => Receiver(seq, tcs)); //run Receiver in own thread
await sequencer.TestPointAsync(TCS.ReceiverInitialize); //receiver was running and is awaiting tcs now
sequencer.Run(seq => Messanger(seq, tcs)); //run Messanger in own thread
await sequencer.TestPointAsync(TCS.MessangerSetResult); //messanger SetResult executed
var worker = await sequencer.TestPointAsync(TCS.ReceiverRecord); //get info about Receivers thread
//Messanger was not executing code inside Receiver synchronously!
Assert.AreNotEqual(worker.ProductionArg, nameof(Messanger));
await sequencer.WhenAll(); // wait for all tasks to complete
Assert.DoesNotThrow(() => sequencer.TryReThrowException());
}
PointAsyncArg <TEnum, TArg>(this ISequencerUC sequencer,
SeqPointTypeUC seqPointTypeUC,
TEnum registration,
Func <bool> condition,
TArg arg,
Action <object> injectContinuation = null)
where TEnum : struct
{
SequencerRegisterUC register = sequencer as SequencerRegisterUC;
if (register == null || condition == null || !condition())
{
return(CompletedAwaiter);
}
ISequencerExceptionRegister exceptionRegister = register.ExceptionRegister.TryReThrowException();
ISequencerTaskRegister taskRegister = register.TaskRegister;
ISequencerPointUC <TEnum> seqPoint = register.TryGet(registration);
return
(seqPoint?.ProductionPoint(taskRegister, exceptionRegister, seqPointTypeUC, arg, injectContinuation)
?? CompletedAwaiter
);
}
public async Task Insert3ItemsThrottleTest()
{
ISequencerUC sequencer =
SequencerUC
.Construct()
.Register(Insert3ItemsThrottleTestEnum.Enqueue3Items_Begin, new StrategyOneOnOneUC())
.Register(Insert3ItemsThrottleTestEnum.Enqueue3Items_A, new StrategyOneOnOneUC())
.Register(Insert3ItemsThrottleTestEnum.Enqueue3Items_B, new StrategyOneOnOneUC())
.Register(Insert3ItemsThrottleTestEnum.Enqueue3Items_C_Throttle, new StrategyOneOnOneUC())
.Register(Insert3ItemsThrottleTestEnum.Enqueue3Items_End, new StrategyOneOnOneUC())
.Register(Insert3ItemsThrottleTestEnum.EnqueuedItemsAsyncBegin, new StrategyOneOnOneUC())
.Register(Insert3ItemsThrottleTestEnum.EnqueuedItemsAsyncDataItem, new StrategyOneOnOneUC())
.Register(Insert3ItemsThrottleTestEnum.EnqueuedItemsAsyncEnd, new StrategyOneOnOneUC())
;
const int throttle = 3;
IConcurrentQueueNotifier <string> notifier = new ConcurrentQueueNotifier <string>(throttle);
sequencer.Run(() => Insert3ItemsThrottle(sequencer, notifier));
sequencer.Run(() => AwaitDequeue3(sequencer, notifier));
IProductionPointUC prodPoint;
await sequencer.TestPointCompleteAsync(Insert3ItemsThrottleTestEnum.Enqueue3Items_Begin);
await sequencer.TestPointCompleteAsync(Insert3ItemsThrottleTestEnum.Enqueue3Items_A);
await sequencer.TestPointCompleteAsync(Insert3ItemsThrottleTestEnum.Enqueue3Items_B);
prodPoint = await sequencer.TestPointCompleteAsync(Insert3ItemsThrottleTestEnum.Enqueue3Items_C_Throttle);
Assert.IsFalse((prodPoint?.ProductionArg as Task)?.IsCompleted);
Assert.AreEqual(3, notifier.Count());
await sequencer.TestPointCompleteAsync(Insert3ItemsThrottleTestEnum.EnqueuedItemsAsyncBegin);
prodPoint = await sequencer.TestPointCompleteAsync(Insert3ItemsThrottleTestEnum.EnqueuedItemsAsyncDataItem);
Assert.AreEqual("A", prodPoint?.ProductionArg as string);
//throttling should be deactivated, resuming
await sequencer.TestPointCompleteAsync(Insert3ItemsThrottleTestEnum.Enqueue3Items_End);
prodPoint = await sequencer.TestPointCompleteAsync(Insert3ItemsThrottleTestEnum.EnqueuedItemsAsyncDataItem);
Assert.AreEqual("B", prodPoint?.ProductionArg as string);
prodPoint = await sequencer.TestPointCompleteAsync(Insert3ItemsThrottleTestEnum.EnqueuedItemsAsyncDataItem);
Assert.AreEqual("C", prodPoint?.ProductionArg as string);
await sequencer.TestPointCompleteAsync(Insert3ItemsThrottleTestEnum.EnqueuedItemsAsyncEnd);
await sequencer.WhenAll();
sequencer.TryReThrowException();
}
public static async Task AwaitEnqueuedData(ISequencerUC sequencer, IConcurrentQueueNotifier <string> notifier)
{
await sequencer.PointAsync(SeqPointTypeUC.Match, AwaitAlreadyEnqueuedDataEnum.EnqueuedItemsAsyncBegin);
await notifier.EnqueuedItemsAsync();
await sequencer.PointAsync(SeqPointTypeUC.Match, AwaitAlreadyEnqueuedDataEnum.EnqueuedItemsAsyncEnd);
}
private void Messanger(ISequencerUC sequencer, TaskCompletionSource <object> tcs)
{
ThreadStaticWorker = nameof(Messanger); //thread static to detect Receiver is taking same thread
sequencer.Point(SeqPointTypeUC.Notify, TCS.MessangerSetResult);
tcs.SetResult(null);
//before the thread is returned to thread pool, the thread static field is cleaned,
ThreadStaticWorker = null;
}
public TimerProcessor(int period, IRealTimeSource realTimeSource, ISequencerUC sequencer = null)
{
if ((RealTimeSource = realTimeSource) == null)
{
throw new ArgumentNullException($"{nameof(realTimeSource)}");
}
Ticker = new TickGenerator(period, NullSafeSequencer = sequencer);
}
void PointArg <TEnum, TArg>(ISequencerUC sequencer,
SeqPointTypeUC seqPointTypeUC,
TEnum registration,
TArg arg,
Action <object> injectContinuation = null)
where TEnum : struct
{
sequencer?.Point(seqPointTypeUC, registration, arg, injectContinuation);
}
TestPointFailAsync <TEnum>(this ISequencerUC sequencer,
TEnum registration,
Exception ex = null)
where TEnum : struct
{
IProductionPointUC prodPoint = await sequencer.TestPointAsync(registration);
prodPoint?.Fail(ex);
return(prodPoint);
}
public static async Task Enque2Items(ISequencerUC sequencer, IConcurrentQueueNotifier <string> notifier)
{
await sequencer.PointAsync(SeqPointTypeUC.Match, AwaitAheadOfDataEnum.Enqueue2ItemsBegin);
await notifier.EnqueueAsync("A");
await sequencer.PointAsync(SeqPointTypeUC.Match, AwaitAheadOfDataEnum.Enqueue2ItemsA);
await sequencer.PointAsync(SeqPointTypeUC.Match, AwaitAheadOfDataEnum.Enqueue2ItemsEnd);
}
void Point <TEnum>(ISequencerUC sequencer,
Func <bool> condition,
SeqPointTypeUC seqPointTypeUC,
TEnum registration,
object arg = null,
Action <object> injectContinuation = null)
where TEnum : struct
{
sequencer?.Point(seqPointTypeUC, registration, condition, arg, injectContinuation);
}
public static void Throw(ISequencerUC sequencer,
Exception innerException = null,
string message = null,
int skipStackFrames = 4,
[CallerMemberName] string calllerName = "",
[CallerFilePath] string callerFileName = "",
[CallerLineNumber] int callerLineNumber = 0)
{
sequencer?.Throw(innerException, message, skipStackFrames, calllerName, callerFileName, callerLineNumber);
}
void PointArg <TEnum, TArg>(this ISequencerUC sequencer,
SeqPointTypeUC seqPointTypeUC,
TEnum registration,
TArg arg,
Action <object> injectContinuation = null)
where TEnum : struct
{
var rslt = sequencer.PointAsyncArg <TEnum, TArg>(seqPointTypeUC, registration, arg, injectContinuation);
rslt.GetResult(); //sync waiting unless completed awaiter was provided
}
TestPointCompleteAsync <TEnum>(this ISequencerUC sequencer,
TEnum registration,
object testArg = null,
SeqContinuationUC context = SeqContinuationUC.OnCapturedContext)
where TEnum : struct
{
IProductionPointUC prodPoint = await sequencer.TestPointAsync(registration);
prodPoint?.Complete(testArg, context);
return(prodPoint);
}
private static void ConcurrentSequencingConditionalWorker(ISequencerUC sequencer, ILockUC spinLock)
{
ConditionalSequencerUC.Point(sequencer, SeqPointTypeUC.Match, ConcurrentSequencingPhaseConditional.Begin);
ConditionalSequencerUC.Point(sequencer, SeqPointTypeUC.Notify, ConcurrentSequencingPhaseConditional.EnteringSpinLock, Interlocked.Increment(ref StepConcurrentSequencingConditional));
using (spinLock.Enter())
{
ConditionalSequencerUC.Point(sequencer, SeqPointTypeUC.Match, ConcurrentSequencingPhaseConditional.Locked, Interlocked.Decrement(ref StepConcurrentSequencingConditional));
ConditionalSequencerUC.Point(sequencer, SeqPointTypeUC.Notify, ConcurrentSequencingPhaseConditional.LockedNotify, Interlocked.Add(ref StepConcurrentSequencingConditional, 0));
}
ConditionalSequencerUC.Point(sequencer, SeqPointTypeUC.Match, ConcurrentSequencingPhaseConditional.End);
}
public static ISequencerUC TryReThrowException(this ISequencerUC sequencer)
{
if (!(sequencer is SequencerRegisterUC register))
{
return(sequencer);
}
register.ExceptionRegister.TryReThrowException();
return(sequencer);
}
private static void ThrowWorker_ConditionalException(bool detect, ISequencerUC sequencer)
{
try
{
throw new Exception("Detect raised exception");
}
catch (Exception ex)
{
sequencer.Throw(() => detect, ex);
}
}
private static void ConcurrentSequencingWorker(SpinLockUC spinLock, ISequencerUC sequencer)
{
sequencer.Point(SeqPointTypeUC.Match, ConcurrentSequencingPhase.Begin);
sequencer.Point(SeqPointTypeUC.Notify, ConcurrentSequencingPhase.EnteringSpinLock, Interlocked.Increment(ref StepConcurrentSequencing));
using (spinLock.Enter())
{
sequencer.Point(SeqPointTypeUC.Match, ConcurrentSequencingPhase.Locked, Interlocked.Decrement(ref StepConcurrentSequencing));
sequencer.Point(SeqPointTypeUC.Notify, ConcurrentSequencingPhase.LockedNotify, Interlocked.Add(ref StepConcurrentSequencing, 0));
}
sequencer.Point(SeqPointTypeUC.Match, ConcurrentSequencingPhase.End);
}
public static async Task AwaitAhedOfData(ISequencerUC sequencer, IConcurrentQueueNotifier <string> notifier)
{
await sequencer.PointAsync(SeqPointTypeUC.Match, AwaitAheadOfDataEnum.EnqueuedItemsAsyncBegin);
Task t = notifier.EnqueuedItemsAsync();
await sequencer.PointAsync(SeqPointTypeUC.Match, AwaitAheadOfDataEnum.EnqueuedItemsAsyncAwaiting, t);
await t;
await sequencer.PointAsync(SeqPointTypeUC.Match, AwaitAheadOfDataEnum.EnqueuedItemsAsyncEnd);
}
private static void ThrowWorker_DetectException(ISequencerUC sequencer)
{
try
{
throw new Exception("Detect raised exception");
}
catch (Exception ex)
{
sequencer.Throw(ex);
}
}
void Point <TEnum>(this ISequencerUC sequencer,
SeqPointTypeUC seqPointTypeUC,
TEnum registration,
Func <bool> condition,
object arg = null,
Action <object> injectContinuation = null)
where TEnum : struct
{
var rslt = sequencer.PointAsync(seqPointTypeUC, registration, condition, arg, injectContinuation);
rslt.GetResult(); //sync waiting unless completed awaiter was provided
}
public static ISequencerUC Run(this ISequencerUC sequencer, object obj, Action <ISequencerUC, object> action)
{
if (!(sequencer is SequencerRegisterUC register))
{
return(sequencer);
}
register.ExceptionRegister.TryReThrowException();
ISequencerTaskRegister taskRegister = register.TaskRegister;
taskRegister.Run(obj, action);
return(sequencer);
}
public static ISequencerUC Run <TResult>(this ISequencerUC sequencer, Func <TResult> func)
{
if (!(sequencer is SequencerRegisterUC register))
{
return(sequencer);
}
register.ExceptionRegister.TryReThrowException();
ISequencerTaskRegister taskRegister = register.TaskRegister;
taskRegister.Run(func);
return(sequencer);
}
private async Task Receiver(ISequencerUC sequencer, TaskCompletionSource <object> tcs)
{
sequencer.Point(SeqPointTypeUC.Notify, TCS.ReceiverInitialize);
await tcs.Task;
sequencer.Point(SeqPointTypeUC.Notify, TCS.ReceiverRecord, ThreadStaticWorker); //saving Worker state
if (ThreadStaticWorker == nameof(Messanger))
{
//$"{nameof(Messanger)} is now working for us synchronously!";
}
}
public static ISequencerUC TryReThrowException(this ISequencerUC sequencer)
{
SequencerRegisterUC register = sequencer as SequencerRegisterUC;
if (register == null)
{
return(sequencer);
}
register.ExceptionRegister.TryReThrowException();
return(sequencer);
}
public async Task TestAB()
{
//create sequencer
ISequencerUC sequencer = SequencerUC.Construct();
//create production code
ProductionCode worker = new ProductionCode(sequencer);
//register production code sequencer event spots
//strategy, one production code event is translated to one unit test code event
sequencer
.Register(ProductionCode.SequencingEnumTest.SpotBegin, new StrategyOneOnOneUC())
.Register(ProductionCode.SequencingEnumTest.SpotEnd, new StrategyOneOnOneUC())
;
//start concurrent tasks
Task.Run(() => { worker.Worker("A"); });
Task.Run(() => { worker.Worker("B"); });
//await two production code events
IProductionPointUC taskWorkerBegin1 = await worker.Sequencer.TestPointAsync(ProductionCode.SequencingEnumTest.SpotBegin);
IProductionPointUC taskWorkerBegin2 = await worker.Sequencer.TestPointAsync(ProductionCode.SequencingEnumTest.SpotBegin);
IProductionPointUC taskWorkerBeginA;
IProductionPointUC taskWorkerBeginB;
//detect which event is which
taskWorkerBeginA = (string)taskWorkerBegin1.ProductionArg == "A" ? taskWorkerBegin1 : null;
taskWorkerBeginA = (string)taskWorkerBegin2.ProductionArg == "A" ? taskWorkerBegin2 : taskWorkerBeginA;
//detect which event is which
taskWorkerBeginB = (string)taskWorkerBegin1.ProductionArg == "B" ? taskWorkerBegin1 : null;
taskWorkerBeginB = (string)taskWorkerBegin2.ProductionArg == "B" ? taskWorkerBegin2 : taskWorkerBeginB;
//decide about the order of execution
taskWorkerBeginA.Complete("A runs first");
//await A to run to SpotB
IProductionPointUC taskWorkerEndA = await worker.Sequencer.TestPointAsync(ProductionCode.SequencingEnumTest.SpotEnd);
//decide about the order of execution
taskWorkerBeginB.Complete("B runs second");
IProductionPointUC taskWorkerEndB = await worker.Sequencer.TestPointAsync(ProductionCode.SequencingEnumTest.SpotEnd);
taskWorkerEndA.Complete("A continue");
taskWorkerEndB.Complete("B continue");
}
private static async Task ConcurrentSequencingWorker(IAsyncLockUC Lock, ISequencerUC sequencer)
{
await sequencer.PointAsync(SeqPointTypeUC.Match, ConcurrentSequencingPhase.Begin);
await sequencer.PointAsync(SeqPointTypeUC.Notify, ConcurrentSequencingPhase.EnteringSimpleLock, Interlocked.Increment(ref StepConcurrentSequencing));
using (await Lock.Enter())
{
await sequencer.PointAsync(SeqPointTypeUC.Match, ConcurrentSequencingPhase.Locked, Interlocked.Decrement(ref StepConcurrentSequencing));
await sequencer.PointAsync(SeqPointTypeUC.Notify, ConcurrentSequencingPhase.LockedNotify, Interlocked.Add(ref StepConcurrentSequencing, 0));
}
await sequencer.PointAsync(SeqPointTypeUC.Match, ConcurrentSequencingPhase.End);
}
private static async Task ConcurrentSequencingAsyncWorker(ILockUC spinLock, ISequencerUC sequencer)
{
await sequencer.PointAsync(SeqPointTypeUC.Match, ConcurrentSequencingPhaseAsync.Begin);
await sequencer.PointAsync(SeqPointTypeUC.Notify, ConcurrentSequencingPhaseAsync.EnteringSpinLock, Interlocked.Increment(ref StepConcurrentSequencingAsync));
using (spinLock.Enter())
{
await sequencer.PointAsync(SeqPointTypeUC.Match, ConcurrentSequencingPhaseAsync.Locked, Interlocked.Decrement(ref StepConcurrentSequencingAsync));
await sequencer.PointAsync(SeqPointTypeUC.Notify, ConcurrentSequencingPhaseAsync.LockedNotify, Interlocked.Add(ref StepConcurrentSequencingAsync, 0));
}
await sequencer.PointAsync(SeqPointTypeUC.Match, ConcurrentSequencingPhaseAsync.End);
}
