/// <summary>
/// Initializes a new instance of the <see cref="GroupController"/> class.
/// </summary>
public GroupController()
{
_cleanUp = Disposable.Create(() => _regroupSubject.OnCompleted());
}
public void UsingAsync_CancelFactory()
{
var N = 10;// 0000;
for (var i = 0; i < N; i++)
{
var gate = new object();
var disposed = false;
var called = false;
var s = new ManualResetEvent(false);
var e = new ManualResetEvent(false);
var x = new ManualResetEvent(false);
var xs = Observable.Using(
ct => Task.Factory.StartNew(() =>
Disposable.Create(() =>
{
lock (gate)
{
disposed = true;
}
})
),
(_, ct) => Task.Factory.StartNew(() =>
{
s.Set();
e.WaitOne();
while (!ct.IsCancellationRequested)
{
;
}
x.Set();
return(Observable.Defer(() =>
{
called = true;
return Observable.Return(42);
}));
})
);
var d = xs.Subscribe(_ => { });
s.WaitOne();
//
// This will *eventually* set the CancellationToken. There's a fundamental race between observing the CancellationToken
// and returning the IDisposable that will set the CancellationTokenSource. Notice this is reflected in the code above,
// by looping until the CancellationToken is set.
//
d.Dispose();
e.Set();
x.WaitOne();
while (true)
{
lock (gate)
{
if (disposed)
{
break;
}
}
}
Assert.False(called, i.ToString());
}
}
public static IDisposable RegisterHover(this View view, EventHandler <View.HoverEventArgs> handler)
{
view.Hover += handler;
return(Disposable.Create(() => view.RunIfNativeInstanceAvailable(v => v.Hover -= handler)));
}
public IDisposable Subscribe(IObserver <TProduct> observer)
{
ConsumerObserver = observer;
return(Disposable.Create(() => ConsumerObserver = null));
}
public IObservable <IGroupChangeSet <TObject, TKey, TGroupKey> > Run()
{
return(Observable.Create <IGroupChangeSet <TObject, TKey, TGroupKey> >
(
observer =>
{
var locker = new object();
//create source group cache
var sourceGroups = _source.Synchronize(locker)
.Group(_groupSelector)
.DisposeMany()
.AsObservableCache();
//create parent groups
var parentGroups = _resultGroupSource.Synchronize(locker)
.Transform(x =>
{
//if child already has data, populate it.
var result = new ManagedGroup <TObject, TKey, TGroupKey>(x);
var child = sourceGroups.Lookup(x);
if (child.HasValue)
{
//dodgy cast but fine as a groups is always a ManagedGroup;
var group = (ManagedGroup <TObject, TKey, TGroupKey>)child.Value;
result.Update(updater => updater.Update(group.GetInitialUpdates()));
}
return result;
})
.DisposeMany()
.AsObservableCache();
//connect to each individual item and update the resulting group
var updateFromcChilds = sourceGroups.Connect()
.SubscribeMany(x => x.Cache.Connect().Subscribe(updates =>
{
var groupToUpdate = parentGroups.Lookup(x.Key);
if (groupToUpdate.HasValue)
{
groupToUpdate.Value.Update(updater => updater.Update(updates));
}
}))
.DisposeMany()
.Subscribe();
var notifier = parentGroups
.Connect()
.Select(x =>
{
var groups = x.Select(s => new Change <IGroup <TObject, TKey, TGroupKey>, TGroupKey>(s.Reason, s.Key, s.Current));
return new GroupChangeSet <TObject, TKey, TGroupKey>(groups);
})
.SubscribeSafe(observer);
return Disposable.Create(() =>
{
notifier.Dispose();
sourceGroups.Dispose();
parentGroups.Dispose();
updateFromcChilds.Dispose();
});
}));
}
public static IDisposable RegisterLayoutChange(this View view, EventHandler <View.LayoutChangeEventArgs> handler)
{
view.LayoutChange += handler;
return(Disposable.Create(() => view.RunIfNativeInstanceAvailable(v => v.LayoutChange -= handler)));
}
private void ProcessSubscription(string subscriptionId,
IMessage message,
RequestStreamHandler <TRequest, TUpdate> requestStreamHandler)
{
// In order to prevent races/resource-leaks here we must:
// * Monitor session diconnections before attempting to create a request context.
// - Otherwise, a session could be destroyed and we would never clean up its resources, as we'd
// miss the notification.
// * Create the subscription to monitor sessions and add update our state all within a single
// critical region. In addition to this, we must ensure session destruction callbacks are
// fired on a different thread.
// - Otherwise, we may attempt to remove the session's resources before they are added.
var sessionId = message.SessionId;
var replyDestination = message.ReplyTo;
var subscription = new CompositeDisposable();
TRequest request;
if (!TryDeserializeRequest(subscriptionId, message, out request))
{
return;
}
var clientId = message.Properties.GetString(OperationKeys.ClientId);
if (clientId == null)
{
Log.Warning("No ClientId found. Ignoring.");
return;
}
var sessionDestroyedHandler = new AnonymousUserSessionHandler(_ => { },
_ =>
{
lock (_subscriptions)
{
// TODO: Make the Java version clean all resources hooked up here.
// ReSharper disable once AccessToDisposedClosure
subscription.Dispose();
_subscriptions.Remove(subscriptionId);
}
});
lock (_subscriptions)
{
// TODO: How do we clean up when IsSessionRequired == false?
if (IsSessionRequired)
{
subscription.Add(UserSessionCache.Subscribe(sessionId, sessionDestroyedHandler));
}
var context = CreateRequestContext(message);
if (context == null)
{
Log.Warning("Failed to create request context. Ignoring.");
subscription.Dispose(); // Don't listen for session destruction if it doesn't exist.
return;
}
// At this point we know the session exists or existed and we know it will be cleared up (after we
// exit the critical region) by the sessionResourceCleaner if it is destroyed.
_subscriptions.Add(subscriptionId, subscription);
try
{
const int notFinished = 0;
const int finished = 1;
var subscriptionState = notFinished;
var notificationSubscription = requestStreamHandler(context,
request,
new AnonymousStreamHandler <TUpdate>(
// TODO: I remove the session from the lookup AND ALSO dipose subscription here.
// This is analagous to the AutoDetachObserver<T> in Rx. Should we do the same in the Java version?
// Review with John. -ZB
update => OnUpdated(subscriptionId, replyDestination, update),
error =>
{
if (Interlocked.Exchange(ref subscriptionState, finished) ==
notFinished)
{
OnFailed(subscriptionId, replyDestination, error);
}
},
() =>
{
if (Interlocked.Exchange(ref subscriptionState, finished) ==
notFinished)
{
OnCompleted(subscriptionId, replyDestination);
}
}));
subscription.Add(Disposable.Create(() =>
{
var hasAlreadyFinished = Interlocked.Exchange(ref subscriptionState, finished) == finished;
if (!hasAlreadyFinished)
{
notificationSubscription.Dispose();
}
}));
}
catch (Exception e)
{
const string error = "Failed to process request";
OnFailed(subscriptionId, replyDestination, new MessagingException(error, e));
Log.Error(error, e);
}
}
SendAck(subscriptionId, replyDestination, clientId);
}
public LogEntryViewer(ILogEntryService logEntryService)
{
//build an observable filter
var filter = this.WhenAnyValue(x => x.SearchText)
.Throttle(TimeSpan.FromMilliseconds(250))
.Select(BuildFilter);
//filter, sort and populate reactive list.
var loader = logEntryService.Items.Connect()
.Transform(le => new LogEntryProxy(le))
.DelayRemove(TimeSpan.FromSeconds(0.75), proxy => proxy.FlagForRemove())
.Filter(filter)
.Sort(SortExpressionComparer <LogEntryProxy> .Descending(le => le.TimeStamp).ThenByDescending(l => l.Key), SortOptions.UseBinarySearch)
.ObserveOn(RxApp.MainThreadScheduler)
.Bind(Data)
.DisposeMany()
.Subscribe();
//aggregate total items
var summariser = logEntryService.Items.Connect()
.QueryWhenChanged(items =>
{
var debug = items.Count(le => le.Level == LogLevel.Debug);
var info = items.Count(le => le.Level == LogLevel.Info);
var warn = items.Count(le => le.Level == LogLevel.Warning);
var error = items.Count(le => le.Level == LogLevel.Error);
return(new LogEntrySummary(debug, info, warn, error));
})
.Subscribe(s => Summary = s);
//manage user selection, delete items command
var selectedItems = _selectionController.SelectedItems.Connect().Publish();
//Build a message from selected items
_deleteItemsText = selectedItems.QueryWhenChanged(query =>
{
if (query.Count == 0)
{
return("Select log entries to delete");
}
if (query.Count == 1)
{
return("Delete selected log entry?");
}
return($"Delete {query.Count} log entries?");
})
.ToProperty(this, viewmodel => viewmodel.DeleteItemsText, "Select log entries to delete");
//make a command out of selected items - enabling the command when there is a selection
DeleteCommand = ReactiveCommand.Create(() =>
{
var toRemove = _selectionController.SelectedItems.Items.Select(proxy => proxy.Original).ToArray();
_selectionController.Clear();
logEntryService.Remove(toRemove);
}, selectedItems.QueryWhenChanged(query => query.Count > 0));
var connected = selectedItems.Connect();
_cleanUp = Disposable.Create(() =>
{
loader.Dispose();
connected.Dispose();
_deleteItemsText.Dispose();
DeleteCommand.Dispose();
_selectionController.Dispose();
summariser.Dispose();
});
}
private IConnectableObservable <byte[]> CreateObserver(WebSocket webSocket)
{
return(Observable.Create <byte[]>(async(observer, cancellation) =>
{
try
{
while (webSocket.IsConnected && !cancellation.IsCancellationRequested)
{
WebSocketMessageReadStream message =
await webSocket.ReadMessageAsync(cancellation)
.ConfigureAwait(false);
if (message == null)
{
continue;
}
switch (message.MessageType)
{
case WebSocketMessageType.Text:
string messageContent;
using (StreamReader streamReader =
new StreamReader(message, Encoding.UTF8))
{
messageContent = await streamReader.ReadToEndAsync();
}
WebCastMessage webCastMessage =
messageContent.FromJson <WebCastMessage>();
switch (webCastMessage.Type)
{
case "metadata":
_logger.Debug("Metadata received: {webCastMessage.Data}");
break;
default:
_logger.Warning("Invalid message");
break;
}
break;
case WebSocketMessageType.Binary:
byte[] bytes = message.ReadFully();
observer.OnNext(bytes);
break;
}
}
observer.OnCompleted();
}
catch (Exception exception)
{
_logger.Error(exception, "Error Handling connection");
observer.OnError(exception);
}
return Disposable.Create(webSocket.Dispose);
})
.Publish());
}
public static async Task <IDisposable> UseWaitAsync(this SemaphoreSlim semaphore)
{
await semaphore.WaitAsync();
return(Disposable.Create(() => semaphore.Release()));
}
/* ----------------------------------------------------------------- */
///
/// SubscribeAsync
///
/// <summary>
/// データ受信時に非同期で実行する処理を登録します。
/// </summary>
///
/* ----------------------------------------------------------------- */
public IDisposable SubscribeAsync(Func <TimeSpan, Task> action)
{
Subscriptions.Add(action);
return(Disposable.Create(() => Subscriptions.Remove(action)));
}
private static void Impl(bool primaryFirst, bool primaryRandom, IEnumerable <int> nDependents)
{
var rand = new Random();
foreach (var n in nDependents)
{
var e = new ManualResetEvent(false);
var hasDependent = new ManualResetEvent(false);
var r = new RefCountDisposable(Disposable.Create(() => { e.Set(); }));
var d = default(IDisposable);
if (primaryFirst)
{
d = r.GetDisposable();
r.Dispose();
}
else if (primaryRandom)
{
var sleep = rand.Next(0, 10) == 0 /* 10% chance */ ? rand.Next(2, 100) : 0;
ThreadPool.QueueUserWorkItem(_ =>
{
hasDependent.WaitOne();
Helpers.SleepOrSpin(sleep);
r.Dispose();
});
if (n == 0)
{
hasDependent.Set();
}
}
Console.Write(n + " - ");
var cd = new CountdownEvent(n * 2);
for (int i = 0; i < n; i++)
{
var j = i;
var sleep1 = rand.Next(0, 10) == 0 /* 10% chance */ ? rand.Next(2, 100) : 0;
var sleep2 = rand.Next(0, 10) == 0 /* 10% chance */ ? rand.Next(2, 100) : 0;
var sleep3 = rand.Next(0, 10) == 0 /* 10% chance */ ? rand.Next(2, 100) : 0;
ThreadPool.QueueUserWorkItem(_ =>
{
Helpers.SleepOrSpin(sleep1);
Console.Write("+");
var f = r.GetDisposable();
if (j == 0)
{
hasDependent.Set();
}
Helpers.SleepOrSpin(sleep2);
ThreadPool.QueueUserWorkItem(__ =>
{
Helpers.SleepOrSpin(sleep3);
f.Dispose();
Console.Write("-");
cd.Signal();
});
cd.Signal();
});
}
cd.Wait();
if (primaryFirst)
{
d.Dispose();
}
else if (!primaryRandom)
{
r.Dispose();
}
e.WaitOne();
Console.WriteLine(".");
}
}
public IDisposable StartPeriodicTimer(Action action, TimeSpan period)
{
_action = action;
_period = period;
return(Disposable.Create(() => _action = null));
}
// For requests that do not use requestId.
// Single result(end=null): CurrentTime, ScannerParameters
// Multiple results (end=false=>true): AccountPositions, OpenOrders
// Continuous results (end=false): AccountUpdate, NewsBulletins
// End type: not type T
internal static IObservable <T> ToObservable <T>(
this IObservable <object> source, Action subscribe, Action unsubscribe = null, Func <object, bool> end = null)
where T : class
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
if (subscribe == null)
{
throw new ArgumentNullException(nameof(subscribe));
}
return(Observable.Create <T>(observer =>
{
bool?cancelable = null;
var subscription = source
.Finally(() => cancelable = false)
.Subscribe(
onNext: m =>
{
var theEnd = end != null && end(m);
if (m is T t && (end == null || !theEnd))
{
observer.OnNext(t);
}
if (end == null || theEnd)
{
cancelable = false;
observer.OnCompleted();
}
},
onError: observer.OnError,
onCompleted: observer.OnCompleted);
if (cancelable == null)
{
subscribe();
}
if (cancelable == null)
{
cancelable = true;
}
return Disposable.Create(() =>
{
if (cancelable == true)
{
try
{
unsubscribe?.Invoke();
}
catch (Exception e)
{ // ignored
Debug.WriteLine("Unexpected: " + e.ToString());
}
}
subscription.Dispose();
});
}));
private IDisposable StartObserving(Task task)
{
task.ContinueWith(ContinueObservedTask, CancellationToken.None, TaskContinuationOptions.ExecuteSynchronously, TaskScheduler.Default);
return(Disposable.Create(() => UnobserveTaskFailure(task)));
}
/// <summary>
/// When this method is called, an object will not fire change
/// notifications (neither traditional nor Observable notifications)
/// until the return value is disposed.
/// </summary>
/// <returns>An object that, when disposed, reenables change
/// notifications.</returns>
public IDisposable SuppressChangeNotifications()
{
Interlocked.Increment(ref changeNotificationsSuppressed);
return(Disposable.Create(() => Interlocked.Decrement(ref changeNotificationsSuppressed)));
}
/// <summary>
/// Create an observable for the specified window or HwndSource
/// </summary>
/// <param name="window">Window</param>
/// <param name="hWndSource">HwndSource</param>
/// <returns>IObservable</returns>
private static IObservable <WindowMessageInfo> WinProcMessages(Window window, HwndSource hWndSource)
{
if (window == null && hWndSource == null)
{
throw new NotSupportedException("One of Window or HwndSource must be supplied");
}
if (window != null && hWndSource != null)
{
throw new NotSupportedException("Either Window or HwndSource must be supplied");
}
return(Observable.Create <WindowMessageInfo>(observer =>
{
// This handles the message, and generates the observable OnNext
IntPtr WindowMessageHandler(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
observer.OnNext(WindowMessageInfo.Create(hwnd, msg, wParam, lParam));
// ReSharper disable once AccessToDisposedClosure
if (hWndSource.IsDisposed)
{
observer.OnCompleted();
}
return IntPtr.Zero;
}
void HwndSourceDisposedHandle(object sender, EventArgs e)
{
observer.OnCompleted();
}
void RegisterHwndSource()
{
hWndSource.Disposed += HwndSourceDisposedHandle;
hWndSource.AddHook(WindowMessageHandler);
}
if (window != null)
{
hWndSource = window.ToHwndSource();
}
if (hWndSource != null)
{
RegisterHwndSource();
}
else
{
// No, try to get it later
window.SourceInitialized += (sender, args) =>
{
hWndSource = window.ToHwndSource();
RegisterHwndSource();
// Simulate the WM_NCCREATE
observer.OnNext(WindowMessageInfo.Create(hWndSource.Handle, (int)WindowsMessages.WM_NCCREATE, IntPtr.Zero, IntPtr.Zero));
};
}
return Disposable.Create(() =>
{
hWndSource.Disposed -= HwndSourceDisposedHandle;
hWndSource.RemoveHook(WindowMessageHandler);
hWndSource.Dispose();
});
})
// Make sure there is always a value produced when connecting
.Publish()
.RefCount());
}
public static IDisposable RegisterContextMenuCreated(this View view, EventHandler <View.CreateContextMenuEventArgs> handler)
{
view.ContextMenuCreated += handler;
return(Disposable.Create(() => view.RunIfNativeInstanceAvailable(v => v.ContextMenuCreated -= handler)));
}
public IDisposable Subscribe(IObserver <int> observer)
{
_subscribeCount++;
_observer = observer;
return(Disposable.Create(() => { _disposed = true; }));
}
public static IDisposable RegisterLongClick(this View view, EventHandler <View.LongClickEventArgs> handler)
{
view.LongClick += handler;
return(Disposable.Create(() => view.RunIfNativeInstanceAvailable(v => v.LongClick -= handler)));
}
/* ----------------------------------------------------------------- */
///
/// Subscribe
///
/// <summary>
/// SendCallback で実行される処理を登録します。
/// </summary>
///
/// <param name="action">処理を表すオブジェクト</param>
///
/// <returns>登録解除用オブジェクト</returns>
///
/* ----------------------------------------------------------------- */
public IDisposable Subscribe(Action <T> action)
{
_subscriptions.Add(action);
return(Disposable.Create(() => _subscriptions.Remove(action)));
}
public static IDisposable RegisterKeyPress(this View view, EventHandler <View.KeyEventArgs> handler)
{
view.KeyPress += handler;
return(Disposable.Create(() => view.RunIfNativeInstanceAvailable(v => v.KeyPress -= handler)));
}
protected override void OnEnable()
{
base.OnEnable();
xpcfComponentManager = xpcf_api.getComponentManagerInstance();
Disposable.Create(xpcfComponentManager.clear).AddTo(subscriptions);
xpcfComponentManager.AddTo(subscriptions);
#if !UN
conf.path = File.ReadAllText("confPath.txt");
#endif
if (xpcfComponentManager.load(conf.path) != XPCFErrorCode._SUCCESS)
{
Debug.LogErrorFormat("Failed to load the configuration file {0}", conf.path);
enabled = false;
return;
}
switch (mode)
{
case PIPELINE.Fiducial:
pipeline = new FiducialPipeline(xpcfComponentManager).AddTo(subscriptions);
break;
case PIPELINE.Natural:
pipeline = new NaturalPipeline(xpcfComponentManager).AddTo(subscriptions);
break;
case PIPELINE.SLAM:
pipeline = new SlamPipeline(xpcfComponentManager).AddTo(subscriptions);
break;
}
overlay3D = xpcfComponentManager.Create("SolAR3DOverlayOpencv").BindTo <I3DOverlay>().AddTo(subscriptions);
switch (source)
{
case SOURCE.SolAR:
camera = xpcfComponentManager.Create("SolARCameraOpencv").BindTo <ICamera>().AddTo(subscriptions);
var intrinsic = camera.getIntrinsicsParameters();
var distorsion = camera.getDistorsionParameters();
var resolution = camera.getResolution();
pipeline.SetCameraParameters(intrinsic, distorsion);
overlay3D.setCameraParameters(intrinsic, distorsion);
OnCalibrate?.Invoke(resolution, intrinsic, distorsion);
if (camera.start() != FrameworkReturnCode._SUCCESS)
{
LOG_ERROR("Camera cannot start");
enabled = false;
}
break;
case SOURCE.Unity:
webcam = new WebCamTexture();
webcam.Play();
if (!webcam.isPlaying)
{
LOG_ERROR("Camera cannot start");
enabled = false;
}
break;
}
switch (display)
{
case DISPLAY.SolAR:
// Set the size of the box to display according to the marker size in world unit
var overlay3D_sizeProp = overlay3D.BindTo <IConfigurable>().getProperty("size");
var size = pipeline.GetMarkerSize();
overlay3D_sizeProp.setFloatingValue(size.width, 0);
overlay3D_sizeProp.setFloatingValue(size.height, 1);
overlay3D_sizeProp.setFloatingValue(size.height / 2.0f, 2);
imageViewer = xpcfComponentManager.Create("SolARImageViewerOpencv").AddTo(subscriptions).BindTo <IImageViewer>().AddTo(subscriptions);
break;
case DISPLAY.Unity:
break;
}
start = clock();
inputImage = SharedPtr.Alloc <Image>().AddTo(subscriptions);
pose = new Transform3Df().AddTo(subscriptions);
}
public static IDisposable RegisterGenericMotion(this View view, EventHandler <View.GenericMotionEventArgs> handler)
{
view.GenericMotion += handler;
return(Disposable.Create(() => view.RunIfNativeInstanceAvailable(v => v.GenericMotion -= handler)));
}
public IDisposable Subscribe(IObserver <bool> observer)
{
ProducerObserver = observer;
NotifyProducer();
return(Disposable.Create(() => ProducerObserver = null));
}