public void TestInvocationBehaviourIgnore()
{
OcDispatcher dispatcher = new OcDispatcher();
dispatcher.NewInvocationBehaviour = NewInvocationBehaviour.Cancel;
bool called = false;
dispatcher.Invoke(() => { called = true; });
dispatcher.Invoke(s => { called = true; }, new object());
dispatcher.InvokeAsync(() => { called = true; });
dispatcher.InvokeAsync(s => { called = true; }, new object());
dispatcher.Invoke(() => { called = true; return(0); });
dispatcher.Invoke(s => { called = true; return(0); }, new object());
dispatcher.InvokeAsync(() => { called = true; return(0); });
dispatcher.InvokeAsync(s => { called = true; return(0); }, new object());
dispatcher.InvokeAsyncAwaitable(() => { called = true; });
dispatcher.InvokeAsyncAwaitable(s => { called = true; }, new object());
dispatcher.InvokeAsyncAwaitable(() => { called = true; return(0); });
dispatcher.InvokeAsyncAwaitable(s => { called = true; return(0); }, new object());
dispatcher.NewInvocationBehaviour = NewInvocationBehaviour.Accept;
dispatcher.Pass();
Assert.IsFalse(called);
dispatcher.Dispose();
}
public void DisposeTest()
{
OcDispatcher dispatcher = new OcDispatcher();
ManualResetEventSlim mre = new ManualResetEventSlim(false);
bool invoked1 = false;
bool invoked2 = false;
bool freezed = false;
InvocationResult <bool> invocationResult = null;
InvocationResult <bool> invocationResult1 = null;
dispatcher.InvokeAsync(() =>
{
dispatcher.InvokeAsync(() =>
{
freezed = true;
mre.Wait();
});
invocationResult = dispatcher.Invoke(() => invoked1 = true);
});
Thread thread = new Thread(
() =>
{
while (!freezed)
{
}
invocationResult1 = dispatcher.Invoke(() => invoked2 = true);
});
thread.Start();
ManualResetEventSlim mreDisposed = new ManualResetEventSlim(false);
dispatcher.PropertyChanged += (sender, args) =>
{
if (args.PropertyName == nameof(OcDispatcher.Status) &&
dispatcher.Status == OcDispatcherStatus.Disposed)
{
mreDisposed.Set();
}
};
while (dispatcher.GetQueueCount() != 2)
{
}
dispatcher.Dispose();
mre.Set();
thread.Join();
mreDisposed.Wait();
Assert.IsFalse(invoked1);
Assert.IsFalse(invoked2);
Assert.AreEqual(invocationResult.Invocation.Status, InvocationStatus.Canceled);
Assert.AreEqual(invocationResult1.Invocation.Status, InvocationStatus.Canceled);
}
public MarketDataObservable(CurrencyPair currencyPair, OcDispatcher backgroundOcDispatcher)
{
var spread = currencyPair.DefaultSpread;
var midRate = currencyPair.InitialPrice;
var bid = midRate - (spread * currencyPair.PipSize);
var offer = midRate + (spread * currencyPair.PipSize);
var initial = new MarketData(currencyPair.Code, bid, offer);
var currentPrice = initial;
Value = currentPrice;
var random = new Random();
//for a given period, move prices by up to 5 pips
_recurringAction = new RecurringAction(() =>
{
int pips = random.Next(1, 5);
//move up or down between 1 and 5 pips
var adjustment = Math.Round(pips * currencyPair.PipSize, currencyPair.DecimalPlaces);
MarketData marketData = random.NextDouble() > 0.5
? currentPrice + adjustment
: currentPrice - adjustment;
backgroundOcDispatcher.Invoke(() =>
Value = marketData);
}, () => TimeSpan.FromSeconds(1 / (double)currencyPair.TickFrequency));
}
public void TestFuncSyncState()
{
OcDispatcher dispatcher = new OcDispatcher(2);
object returnObject = new object();
Assert.AreEqual(dispatcher.Invoke(s => returnObject, new object()).Value, returnObject);
dispatcher.Dispose();
}
public void TestInvocationBehaviourThrowException()
{
OcDispatcher dispatcher = new OcDispatcher();
dispatcher.NewInvocationBehaviour = NewInvocationBehaviour.ThrowException;
bool called = false;
Exception exception;
void invoke(Action action)
{
exception = null;
try
{
action();
}
catch (Exception e)
{
exception = e;
}
Assert.IsTrue(exception != null);
}
invoke(() => dispatcher.Invoke(() => { called = true; }));
invoke(() => dispatcher.Invoke(s => { called = true; }, new object()));
invoke(() => dispatcher.InvokeAsync(() => { called = true; }));
invoke(() => dispatcher.InvokeAsync(s => { called = true; }, new object()));
invoke(() => dispatcher.Invoke(() => { called = true; return(0); }));
invoke(() => dispatcher.Invoke(s => { called = true; return(0); }, new object()));
invoke(() => dispatcher.InvokeAsync(() => { called = true; return(0); }));
invoke(() => dispatcher.InvokeAsync(s => { called = true; return(0); }, new object()));
dispatcher.NewInvocationBehaviour = NewInvocationBehaviour.Accept;
dispatcher.Pass();
Assert.IsFalse(called);
dispatcher.Dispose();
}
public TradeAgeUpdateJob(OcDispatcher backgroundOcDispatcher, ITradeService tradeService)
{
_recurringAction = new RecurringAction(() =>
{
Trade[] trades = null;
backgroundOcDispatcher.Invoke(() =>
trades = tradeService.All.ToArray());
if (trades != null)
{
foreach (IEnumerable <Trade> tradesSlice in trades.Split(300))
{
backgroundOcDispatcher.Invoke(() =>
{
foreach (Trade trade in tradesSlice)
{
TimeSpan diff = DateTime.Now.Subtract(trade.Timestamp);
TimePeriod age =
diff.TotalSeconds <= 60 ? TimePeriod.LastMinute
: diff.TotalMinutes <= 60 ? TimePeriod.LastHour
: TimePeriod.Older;
trade.Age = age;
if (diff.TotalSeconds > 30)
{
trade.Expired = true;
}
}
});
}
}
}, () => TimeSpan.FromSeconds(1));
}
public Item(int num, int num2, OcDispatcher mainOcDispatcher, OcDispatcher backgroundOcDispatcher)
{
_num = num;
_num2 = num2;
_numBackgroundToMainDispatching = new PropertyDispatching <Item, int>(this, nameof(Num), mainOcDispatcher, backgroundOcDispatcher).For(Consumer);
_num2MainToBackgroundDispatching = new PropertyDispatching <Item, int>(this, nameof(Num2), backgroundOcDispatcher, mainOcDispatcher).For(Consumer);
_numBackgroundToMainScalarDispatching = new Computing <int>(() => Num).ScalarDispatching(mainOcDispatcher, backgroundOcDispatcher).For(Consumer);
_num2MainToBackgroundScalarDispatching = new Computing <int>(() => Num2).ScalarDispatching(backgroundOcDispatcher, mainOcDispatcher).For(Consumer);
_numBackgroundToMainScalarDispatching.SetValueRequestHandler = i =>
{
backgroundOcDispatcher.Invoke(() => Num = i);
};
_num2MainToBackgroundDispatching.PropertyChanged += (sender, args) =>
{
if (Thread.CurrentThread != backgroundOcDispatcher._thread)
{
throw new Exception("Wrong thread");
}
};
_num2MainToBackgroundScalarDispatching.PropertyChanged += (sender, args) =>
{
if (Thread.CurrentThread != backgroundOcDispatcher._thread)
{
throw new Exception("Wrong thread");
}
};
_numBackgroundToMainDispatching.PropertyChanged += (sender, args) =>
{
if (Thread.CurrentThread != mainOcDispatcher._thread)
{
throw new Exception("Wrong thread");
}
};
_numBackgroundToMainScalarDispatching.PropertyChanged += (sender, args) =>
{
if (Thread.CurrentThread != mainOcDispatcher._thread)
{
throw new Exception("Wrong thread");
}
};
}
public void TestCallAwaitable()
{
TestSynchronizationConext testSynchronizationConext = new TestSynchronizationConext();
SynchronizationContext.SetSynchronizationContext(testSynchronizationConext);
OcDispatcher dispatcher = new OcDispatcher(2);
int count = 1;
ManualResetEventSlim mres = new ManualResetEventSlim(false);
object context = new object();
Invocation parent;
dispatcher.InvokeAsync(() =>
{
parent = dispatcher.CurrentInvocation;
dispatcher.Invoke(async() =>
{
Assert.AreEqual(count, 1);
count++;
Assert.AreEqual(dispatcher.CurrentInvocation.Priority, 1);
Assert.AreEqual(dispatcher.CurrentInvocation.Context, context);
Assert.AreEqual(dispatcher.CurrentInvocation.Parent, parent);
OcDispatcherSynchronizationContext synchronizationContext = (OcDispatcherSynchronizationContext)SynchronizationContext.Current;
Assert.AreEqual(synchronizationContext.Priority, 1);
Assert.AreEqual(synchronizationContext.Context, context);
Assert.AreEqual(synchronizationContext.ParentInvocation, parent);
await Task.Run(() => count++);
Assert.AreEqual(dispatcher.CurrentInvocation.Priority, 1);
Assert.AreEqual(dispatcher.CurrentInvocation.Context, context);
Assert.AreEqual(dispatcher.CurrentInvocation.Parent, parent);
count++;
mres.Set();
return(1);
}, 1, context, true);
});
mres.Wait();
mres.Dispose();
Assert.AreEqual(count, 4);
dispatcher.Dispose();
}
public void TestInvokeAsyncAwaitableFuncStateDispatcherThread()
{
OcDispatcher dispatcher = new OcDispatcher(2);
int count = 0;
ManualResetEventSlim mres = new ManualResetEventSlim(false);
object context = new object();
dispatcher.Invoke(() =>
{
Invocation invocation = dispatcher.CurrentInvocation;
dispatcher.InvokeAsync(async() =>
{
count++;
Assert.AreEqual(dispatcher.CurrentInvocation.Parent, invocation);
Assert.IsTrue(dispatcher.CurrentInvocation.SetSynchronizationContext);
int returnCount = await dispatcher.InvokeAsyncAwaitable(state =>
{
Assert.AreEqual(count, 1);
count++;
Assert.AreEqual(dispatcher.CurrentInvocation.Priority, 0);
Assert.AreEqual(dispatcher.CurrentInvocation.Context, null);
return(count);
}, new object());
Assert.AreEqual(dispatcher.CurrentInvocation.Parent, invocation);
Assert.AreEqual(returnCount, 2);
Assert.AreEqual(count, 2);
count++;
Assert.AreEqual(Thread.CurrentThread.ManagedThreadId, dispatcher.ManagedThreadId);
Assert.AreEqual(dispatcher.CurrentInvocation.Priority, 1);
Assert.AreEqual(dispatcher.CurrentInvocation.Context, context);
mres.Set();
}, 1, context, true);
});
mres.Wait();
mres.Dispose();
Assert.AreEqual(count, 3);
dispatcher.Dispose();
}
public TradeService(ILogger logger, TradeGenerator tradeGenerator, OcDispatcher backgroundOcDispatcher)
{
_logger = logger;
_tradeGenerator = tradeGenerator;
_backgroundOcDispatcher = backgroundOcDispatcher;
All = new ObservableCollection <Trade>(_tradeGenerator.Generate(5_000, true));
Live = All.Filtering(t => t.Status == TradeStatus.Live).For(_consumer);
var random = new Random();
TimeSpan RandomInterval() => TimeSpan.FromMilliseconds(random.Next(2500, 5000));
// create a random number of trades at a random interval
RecurringAction tradeEmitter = new RecurringAction(() =>
{
var number = random.Next(1, 5);
var trades = _tradeGenerator.Generate(number);
foreach (Trade trade in trades)
{
_backgroundOcDispatcher.Invoke(() => All.Add(trade));
}
}, RandomInterval);
List <Trade> closedTrades = new List <Trade>();
//close a random number of trades at a random interval
RecurringAction tradeCloser = new RecurringAction(() =>
{
var number = random.Next(1, 2);
for (int i = 1; i <= number; i++)
{
_backgroundOcDispatcher.Invoke(() =>
{
Trade trade = All[random.Next(0, All.Count - 1)];
trade.Status = TradeStatus.Closed;
trade.CloseTimestamp = DateTime.Now;
closedTrades.Add(trade);
});
}
}, RandomInterval);
//expire closed items from the cache to avoid unbounded data
RecurringAction tradeRemover = new RecurringAction(() =>
{
_backgroundOcDispatcher.Invoke(() =>
{
for (var index = closedTrades.Count - 1; index >= 0; index--)
{
Trade closedTrade = closedTrades[index];
if ((DateTime.Now - closedTrade.CloseTimestamp).Minutes >= 1)
{
All.Remove(closedTrade);
closedTrades.RemoveAt(index);
}
}
});
}, () => TimeSpan.FromMinutes(1));
//log changes
OcDispatcher logPropertyChangedOcDispatcher = new OcDispatcher();
LogChanges(logPropertyChangedOcDispatcher);
_cleanup = new CompositeDisposable(
_consumer, tradeEmitter, tradeCloser, logPropertyChangedOcDispatcher, tradeRemover);
}
public void TestDebugInfoState(
[Values(true, false)] bool debug,
[Values(true, false)] bool secondAsync)
{
OcConfiguration.SaveOcDispatcherInvocationInstantiationStackTrace = debug;
object context = new object();
object state = new object();
OcDispatcher dispatcher = new OcDispatcher(2);
Action <object> action = null;
Invocation parentInvocation;
action = s =>
{
Assert.AreEqual(s, state);
Assert.IsTrue(dispatcher.CheckAccess());
Assert.AreEqual(OcDispatcher.Current, dispatcher);
parentInvocation = dispatcher.CurrentInvocation;
Assert.AreEqual(parentInvocation.Parent, null);
Assert.AreEqual(parentInvocation.State, state);
Assert.AreEqual(parentInvocation.Action, null);
Assert.AreEqual(parentInvocation.ActionWithState, action);
if (debug)
{
Assert.IsTrue(parentInvocation.InstantiationStackTrace != null);
}
Assert.AreEqual(parentInvocation.Context, context);
Assert.AreEqual(parentInvocation.OcDispatcher, dispatcher);
Assert.AreEqual(parentInvocation.Priority, 1);
object state1 = new object();
Func <object, int> func1 = null;
func1 = s1 =>
{
Assert.IsTrue(dispatcher.CheckAccess());
Assert.AreEqual(OcDispatcher.Current, dispatcher);
Invocation invocation1 = dispatcher.CurrentInvocation;
Assert.AreEqual(invocation1.Parent, parentInvocation);
Assert.AreEqual(invocation1.State, state1);
Assert.AreEqual(invocation1.Action, null);
if (debug)
{
Assert.IsTrue(invocation1.InstantiationStackTrace != null);
}
Assert.AreEqual(invocation1.Context, null);
Assert.AreEqual(invocation1.OcDispatcher, dispatcher);
Assert.AreEqual(invocation1.Priority, 0);
return(3);
};
if (secondAsync)
{
dispatcher.InvokeAsync(func1, state1).PropertyChanged += (sender, args) =>
{
if (args.PropertyName == "Value")
{
Assert.AreEqual(((InvocationResult <int>)sender).Value, 3);
}
};
}
else
{
Assert.AreEqual(dispatcher.Invoke(func1, state1).Value, 3);
}
};
Assert.IsFalse(dispatcher.CheckAccess());
dispatcher.Invoke(action, state, 1, context);
dispatcher.Pass();
dispatcher.Pass();
Assert.AreEqual(dispatcher, StaticInfo.OcDispatchers[dispatcher.ManagedThreadId]);
Assert.IsTrue(dispatcher.CurrentInvocation == null);
Assert.IsTrue(OcDispatcher.Current == null);
dispatcher.Dispose();
}
public void TestSetThreadProperites()
{
OcConfiguration.SaveInstantiationStackTrace = true;
OcDispatcher dispatcher = new OcDispatcher(2);
Assert.AreEqual(dispatcher.GetQueueCount(0), 0);
Assert.AreEqual(dispatcher.GetQueueCount(), 0);
Assert.IsTrue(dispatcher.InstantiationStackTrace != null);
ApartmentState apartmentState = RuntimeInformation.IsOSPlatform(OSPlatform.Linux) ? ApartmentState.Unknown : ApartmentState.MTA;
Assert.AreEqual(dispatcher.NewInvocationBehaviour, NewInvocationBehaviour.Accept);
Assert.AreEqual(dispatcher.Status, OcDispatcherStatus.ExecutingOrWait);
Assert.AreEqual(dispatcher.GetThreadApartmentState(), apartmentState);
Assert.AreEqual(dispatcher.PrioritiesNumber, 2);
CultureInfo culture = CultureInfo.GetCultureInfo("ru-RU");
dispatcher.ThreadIsBackground = true;
dispatcher.ThreadName = "ThreadName";
Assert.AreEqual(dispatcher.ToString(), "(ObservableComputations.OcDispatcher (Thread.Name = 'ThreadName'))");
dispatcher.ThreadPriority = ThreadPriority.Highest;
int managedThreadId = dispatcher.ManagedThreadId;
Assert.IsTrue(dispatcher.ThreadState == (ThreadState.WaitSleepJoin | ThreadState.Background) || dispatcher.ThreadState == (ThreadState.Running | ThreadState.Background));
Assert.AreEqual(dispatcher.ThreadIsBackground, true);
Assert.AreEqual(dispatcher.ThreadName, "ThreadName");
Assert.AreEqual(dispatcher.ThreadPriority, ThreadPriority.Highest);
Assert.AreEqual(dispatcher.ThreadIsAlive, true);
Assert.AreEqual(dispatcher.ManagedThreadId, managedThreadId);
Assert.AreEqual(dispatcher.GetThreadApartmentState(), apartmentState);
dispatcher.Invoke(() =>
{
dispatcher.ThreadCurrentCulture = culture;
dispatcher.ThreadCurrentUICulture = culture;
Assert.AreEqual(Thread.CurrentThread.CurrentCulture, culture);
Assert.AreEqual(Thread.CurrentThread.CurrentUICulture, culture);
Assert.AreEqual(dispatcher.ThreadCurrentCulture, culture);
Assert.AreEqual(dispatcher.ThreadCurrentUICulture, culture);
Assert.AreEqual(Thread.CurrentThread.IsBackground, true);
Assert.AreEqual(Thread.CurrentThread.Name, "ThreadName");
Assert.AreEqual(Thread.CurrentThread.Priority, ThreadPriority.Highest);
Assert.AreEqual(Thread.CurrentThread.IsAlive, true);
Assert.AreEqual(dispatcher.ThreadExecutionContext, Thread.CurrentThread.ExecutionContext);
Assert.AreEqual(Thread.CurrentThread.ManagedThreadId, managedThreadId);
Assert.AreEqual(Thread.CurrentThread.GetApartmentState(), apartmentState);
});
ManualResetEventSlim mreDisposed = new ManualResetEventSlim(false);
dispatcher.PropertyChanged += (sender, args) =>
{
if (args.PropertyName == nameof(OcDispatcher.Status) &&
dispatcher.Status == OcDispatcherStatus.Disposed)
{
mreDisposed.Set();
}
};
dispatcher.Dispose();
Assert.AreEqual(dispatcher.NewInvocationBehaviour, NewInvocationBehaviour.Cancel);
Exception exception = null;
try
{
dispatcher.NewInvocationBehaviour = NewInvocationBehaviour.Accept;
}
catch (Exception e)
{
exception = e;
}
Assert.IsNotNull(exception);
mreDisposed.Wait();
Assert.AreEqual(dispatcher.Status, OcDispatcherStatus.Disposed);
}