/// <summary>
/// Checks whether the current thread is the thread that the dispatcher is associated with.
/// </summary>
/// <returns>True if it is on the thread that the Dispatcher is associated with; otherwise false.</returns>
private bool IsInDispatcherThread()
{
#if NICENIS_UWP
return(TheWindow.Current.Dispatcher.HasThreadAccess);
#else
return(_dispatcher.CheckAccess());
#endif
}
/// <summary>
/// Raises the <see cref="TaskComplete"/> event.</summary>
/// <param name="sender">
/// The <see cref="Object"/> sending the event.</param>
/// <remarks><para>
/// <b>OnTaskComplete</b> raises the <see cref="TaskComplete"/> event. Use this method to
/// notify any listeners that work on the current task is complete.
/// </para><para>
/// If <see cref="Dispatcher"/> is valid and <see cref="SysDispatcher.CheckAccess"/> fails,
/// <b>OnTaskComplete</b> performs an asynchronous delegate invocation via <see
/// cref="SysDispatcher.BeginInvoke"/> and with the current <see cref="Priority"/>.
/// </para></remarks>
public void OnTaskComplete(object sender)
{
var handler = TaskComplete;
if (handler != null)
{
if (Dispatcher != null && !Dispatcher.CheckAccess())
{
foreach (EventHandler eh in handler.GetInvocationList())
{
Dispatcher.BeginInvoke(Priority, eh, sender, EventArgs.Empty);
}
}
else
{
handler(sender, EventArgs.Empty);
}
}
}
/// <summary>
/// Invoke the provided delegate on the underlying actor and wait for completion.
/// </summary>
/// <param name="action">The action to invoke</param>
public static void Invoke(Action action)
{
if (s_mainThreadDispather == null || s_mainThreadDispather.CheckAccess())
{
action.Invoke();
}
else
{
s_mainThreadDispather.Invoke(action);
}
}
/// <summary>
/// Invoke or execute
/// </summary>
/// <param name="dispatcher">The dispatcher</param>
/// <param name="action">Action object</param>
public static void InvokeOrExecute(this System.Windows.Threading.Dispatcher dispatcher, Action action)
{
if (dispatcher.CheckAccess())
{
action();
}
else
{
dispatcher.BeginInvoke(DispatcherPriority.Normal, action);
}
}
public static void AppShutdownDispatcher(Dispatcher theMainDispatcher)
{
if (theMainDispatcher.CheckAccess())
{
theMainDispatcher.InvokeShutdown();
}
else
{
Dispatcher.CurrentDispatcher.Invoke(DispatcherPriority.Send, (Action)(() =>
{
theMainDispatcher.InvokeShutdown();
}));
}
}
public static void ScrollToEnd(Dispatcher dispatcher, ListBox listBox)
{
if (dispatcher.CheckAccess())
{
SelectLastEntry(listBox);
}
else
{
dispatcher.BeginInvoke(
DispatcherPriority.Send,
new VoidFunctionHandler(SelectLastEntry),
listBox);
}
}
public DispatcherConsumer(Dispatcher dispatcher, TimeSpan minTimeSpan)
{
_dispatcher = dispatcher;
_minTimeSpan = HiResTimer.FromTimeSpan(minTimeSpan);
_timer = new Timer(state =>
{
_nextQuantumTime = HiResTimer.Now() + _minTimeSpan;
// prepare batch (generate lots of RunOnDispatcher notifications)
_runOnDispatcher = new List<Action>(); // TODO: race condition where this is null at X, need to prevent timers colliding?
Refresh();
// obtain dispatcher actions
List<Action> actions;
using (this.Lock())
{
actions = _runOnDispatcher;
_runOnDispatcher = null;
}
// execute batch on dispatcher
if (actions != null && actions.Count > 0) // X
{
if (_dispatcher.CheckAccess())
actions.ForEach();
else
_dispatcher.Invoke(new Action(() => actions.ForEach()), DispatcherPriority.DataBind);
}
});
_runOnRefresh.OnNotify =
() =>
{
// see if this is too short a time since last quantum?
var wait = Math.Max(0, _nextQuantumTime - HiResTimer.Now());
_timer.Change(HiResTimer.ToTimeSpan(wait), TimeSpan.FromMilliseconds(-1));
};
}
public static void RunInDispatcher(Dispatcher dispatcher, DispatcherPriority priority, Action action)
{
if (action == null) { return; }
if (dispatcher.CheckAccess())
{
// we are already on thread associated with the dispatcher -> just call action
try
{
action();
}
catch (Exception ex)
{
//Log error here!
}
}
else
{
// we are on different thread, invoke action on dispatcher's thread
dispatcher.BeginInvoke(
priority,
(Action)(
() =>
{
try
{
action();
}
catch (Exception ex)
{
//Log error here!
}
})
);
}
}
public ContactWatcherSingular(Dispatcher dispatcher, ContactLoader loader, string directory, ContactTypes type, ContactWatcherEventCallback callback)
{
Assert.IsNotNull(dispatcher);
// It's expected that this is created on the same thread as the manager,
// so don't need to go through the dispatcher for methods invoked in the constructor.
Assert.IsTrue(dispatcher.CheckAccess());
Assert.IsNotNull(loader);
Assert.IsFalse(string.IsNullOrEmpty(directory));
Assert.IsNotNull(callback);
Assert.IsTrue(Enum.IsDefined(typeof(ContactTypes), type));
Assert.AreNotEqual(ContactTypes.All, type);
Assert.AreNotEqual(ContactTypes.None, type);
_dispatcher = dispatcher;
_rootDirectory = directory;
_loader = loader;
_notify = callback;
_findExtension = "*" + Contact.GetExtensionsFromType(type);
// This is why creating this object is expensive:
// In order to be able to give accurate change notifications we need to know all the contacts that are present at the beginning.
_knownContacts = new Dictionary<string, ContactInfo>();
// _pushedFrames = 0;
_frame = new DispatcherFrame
{
Continue = false
};
// Create the timer, but only signal it if we're going to need to reprocess an update.
_timer = new Timer();
_timer.Tick += delegate
{
if (!_stopProcessing)
{
// Not invoked by the FileSystemWatcher, so don't push a frame here.
_dispatcher.Invoke(DispatcherPriority.Background, (ThreadStart)_ReprocessPendingUpdate);
}
};
_timer.Interval = TimeSpan.FromMilliseconds(_TimerMsDelay);
_timer.IsEnabled = false;
_PopulateKnownContacts(type);
_fileWatch = new FileSystemWatcher(_rootDirectory, _findExtension)
{
IncludeSubdirectories = true,
NotifyFilter = NotifyFilters.FileName | NotifyFilters.LastWrite | NotifyFilters.Attributes,
};
// There's some extra indirection required here because the manager requires thread affinity.
_fileWatch.Changed += FileSystemWatcher_OnChanged;
_fileWatch.Created += FileSystemWatcher_OnCreated;
_fileWatch.Deleted += FileSystemWatcher_OnDeleted;
_fileWatch.Renamed += FileSystemWatcher_OnRenamed;
_fileWatch.EnableRaisingEvents = true;
}
private void theTimer_Elapsed(object sender, ElapsedEventArgs e)
{
double movingStep;
if (ext.ActionsList.Count != 0)
{
CarAction carAction = ext.ActionsList[0];
if (carAction.Duration > 0)
{
Action action = null;
double num = RandomMersene.genrand_real1() * ((RandomMersene.genrand_bool() ? -1.0 : 1.0));
if (carAction.MoveAction == MoveAction.SmartMovement)
{
action = () => this.theCar.translateRotateCuplu();
carAction.Duration -= this.theTimer.Interval / 1000;
}
else if (carAction.Direction != Direction.Straight)
{
movingStep = (double)((carAction.MoveAction == MoveAction.Forward ? 1 : -1)) * ext.MovingStep + num * ext.deviationPercent / 100 * ext.MovingStep;
action = () => this.theCar.autoTranslateRotate(movingStep, carAction.Direction);
carAction.Duration = carAction.Duration - this.theTimer.Interval / 1000;
}
else
{
movingStep = (double)((carAction.MoveAction == MoveAction.Forward ? 1 : -1)) * ext.MovingStep + num * ext.deviationPercent / 100 * ext.MovingStep;
action = () => this.theCar.Move(movingStep);
carAction.Duration = carAction.Duration - this.theTimer.Interval / 1000;
}
System.Windows.Threading.Dispatcher dispatcher = base.Dispatcher;
if (action != null)
{
Action action1 = () =>
{
if (action != null)
{
action();
}
this.RefreshShits();
};
if (!dispatcher.CheckAccess())
{
try
{
dispatcher.Invoke(action1);
}
catch
{
}
}
else
{
action1();
}
}
}
else
{
ext.ActionsList.Remove(carAction);
}
}
if (tmpRefreshShitsTimes > 0)
{
Action action1 = () =>
{
this.theCar.autoTranslateRotate(0, Direction.Left);
this.RefreshShits();
};
System.Windows.Threading.Dispatcher dispatcher = base.Dispatcher;
if (!dispatcher.CheckAccess())
{
try
{
dispatcher.Invoke(action1);
}
catch
{
}
}
else
{
action1();
}
tmpRefreshShitsTimes--;
}
}
public static void ExecuteOnUIThread(Action action, Dispatcher dispatcher)
{
if (dispatcher.CheckAccess())
action();
else
dispatcher.BeginInvoke(action);
}
static void InvokeOnThread(Dispatcher dispatcher, Action action, DispatcherPriority priority = DispatcherPriority.Normal, bool forceAsyncInvoke = true) {
if(dispatcher == null)
return;
if(!forceAsyncInvoke && dispatcher.CheckAccess())
action();
else
dispatcher.BeginInvoke(action, priority);
}
public WPFBlitPresenter(DirectCanvasFactory directCanvas, int width, int height, Dispatcher dispatcher)
: base(directCanvas)
{
m_width = width;
m_height = height;
/* Check and see if we are on the UI thread as we may want to support
* multi-threaded scenarios */
if (!dispatcher.CheckAccess())
{
dispatcher.Invoke((Action)delegate
{
m_d3dImage = new D3DImage();
});
}
else
{
m_d3dImage = new D3DImage();
}
/* Initialize our special layers */
CreateLayer(m_width, m_height);
}
private static void ParseIcons(
XmlReader reader, Dispatcher dispatcher,
IDictionary<string, ImageSource> icons)
{
while (reader.ReadToFollowing("UUID"))
{
var id = reader.ReadElementContentAsString();
if (reader.Name != "Data" &&
!reader.ReadToNextSibling("Data"))
{
continue;
}
var data = Convert.FromBase64String(
reader.ReadElementContentAsString());
BitmapImage image = null;
if (dispatcher.CheckAccess())
{
image = new BitmapImage();
image.SetSource(new MemoryStream(data));
}
else
{
var wait = new ManualResetEvent(false);
dispatcher.BeginInvoke(() =>
{
image = new BitmapImage();
image.SetSource(new MemoryStream(data));
wait.Set();
});
wait.WaitOne();
}
if (!icons.ContainsKey(id))
icons.Add(id, image);
}
}
/// <summary>
/// The fire scanner state changed.
/// </summary>
/// <param name="dispatcher">
/// The dispatcher.
/// </param>
/// <param name="e">
/// The e.
/// </param>
private static void FireScannerStateChanged(Dispatcher dispatcher, NotifyScannerStateChangedEventArgs e)
{
NotifyScannerStateChangedEventHandler scannerStateChanged;
lock (SyncRoot)
{
if (currentScan != e.Id)
{
return;
}
scannerStateChanged = ScannerStateChanged;
}
if (scannerStateChanged != null)
{
if (dispatcher.CheckAccess())
{
scannerStateChanged(null, e);
}
else
{
dispatcher.Invoke(new Action<Dispatcher, NotifyScannerStateChangedEventArgs>(FireScannerStateChanged), DispatcherPriority.Send, dispatcher, e);
}
}
}
private void DispatchWhenRequired( Dispatcher d, Action a )
{
if( d.CheckAccess() ) a();
else d.Invoke( a );
}
public void Generate3DModel(Dispatcher dispatcher)
{
if (!dispatcher.CheckAccess())
{
dispatcher.Invoke(() => Generate3DModel(dispatcher));
return ;
}
if (m_lights.Count == 0)
{
m_lights.Add(new DirectionalLight(Color.FromRgb(0xFF, 0xFF, 0xFF), new Vector3D(4, 6, -5)));
m_lights.Add(new DirectionalLight(Color.FromRgb(0xFF, 0xFF, 0xFF), new Vector3D(-4, -6, 5)));
m_lights.Add(new AmbientLight(Color.FromRgb(0x6F, 0x5F, 0x5F)));
}
m_model3DGroup = new Model3DGroup();
foreach (Light light in m_lights)
m_model3DGroup.Children.Add(light);
foreach (QbModelPart qbModelPart in m_parts)
{
qbModelPart.GenerateGeometry();
foreach (GeometryModel3D geometryModel3D in qbModelPart.Geometry)
{
m_model3DGroup.Children.Add(geometryModel3D);
}
}
//double maxX = m_parts.Max(n => n.Max.X);
//double maxY = m_parts.Max(n => n.Max.Y);
//double maxZ = m_parts.Max(n => n.Max.Z);
//double minX = m_parts.Min(n => n.Min.X);
//double minY = m_parts.Min(n => n.Min.Y);
//double minZ = m_parts.Min(n => n.Min.Z);
//BoundaryBox boundaryBox = new BoundaryBox(new Point3D(minX-0.5, minY-0.5, minZ-0.5), new Point3D(maxX + 0.5, maxY + 0.5, maxZ + 0.5), Colors.Purple);
//m_model3DGroup.Children.Add(boundaryBox.GeometryModel3D);
//double width = m_parts.Max(n => n.Width);
//double height = m_parts.Max(n => n.Height);
//double depth = m_parts.Max(n => n.Depth);
//boundaryBox = new BoundaryBox(new Point3D(-0.5, -0.5, -0.5), new Point3D(width - 0.5, depth - 0.5, height - 0.5), Colors.Goldenrod);
//m_model3DGroup.Children.Add(boundaryBox.GeometryModel3D);
double maxX = m_parts.Max(n => n.Max.X) + 1;
double maxY = m_parts.Max(n => n.Max.Y) + 1;
double minX = m_parts.Min(n => n.Min.X);
double minY = m_parts.Min(n => n.Min.Y);
m_ground = new Ground((int) minX, (int) maxX, (int) minY, (int) maxY, Scale);
foreach (GeometryModel3D geometryModel3D in m_ground.GeometryModel3D)
{
m_model3DGroup.Children.Add(geometryModel3D);
}
}
/// <summary>
/// Fires off your delegate asyncronously, using the threadpool or a full managed thread if needed.
/// </summary>
/// <param name="d">A void delegate - can be cast to (Action) from an anonymous delgate.</param>
/// <param name="dr">A delegate with a return value of some sort - can be cast to (Func<object>) from an anonymous delgate with a return.</param>
/// <param name="state">A user object that can be tracked through the returned result</param>
/// <param name="getRetVal">If true, and the method/delgete returns something, it is included in the AsyncRes returned (after the method completes)</param>
/// <param name="tryThreadPool">True to use the TP, otherwise just go to a ful lthread - good for long running tasks.</param>
/// <param name="rMode">If true, will make sure no other instances are running your method.</param>
/// <returns>AsyncRes with all kind of goodies for waiting, result values, etc.</returns>
private static AsyncRes Do(Func<object> dr, Action d, bool getRetVal, object state, bool tryThreadPool, ReenteranceMode rMode, bool isAsync, Dispatcher dispatcher)
{
//get a generic MethodInfo for checks..
MethodInfo mi = ((dr != null) ? dr.Method : d.Method);
//make a unique key for output usage
string key = string.Format("{0}{1}{2}{3}", ((getRetVal) ? "<-" : ""), mi.DeclaringType, ((mi.IsStatic) ? ":" : "."), mi.Name);
//our custom return value, holds our delegate, state, key, etc.
AsyncRes res = new AsyncRes(state, ((dr != null) ? (Delegate)dr : (Delegate)d), key, rMode);
//Create a delegate wrapper for what we will actually invoke..
Action Action = (Action)delegate
{
if (!BeforeInvoke(res)) return; //checks for reentrance issues and sets us up
try
{
if (res.IsCompleted) return;
if (dr != null)
{
res.retVal = dr();//use this one if theres a return
}
else
{
d();//otherwise the simpler Action
}
}
catch (Exception ex)
{ //we never want a rogue exception on a random thread, it can't bubble up anywhere
System.Diagnostics.Debug.WriteLine("Async Exception:" + ex);
}
finally
{
FinishInvoke(res);//this will fire our callback if they used it, and clean up
}
};
if (dispatcher != null)
{
res.control = dispatcher;
res.result = AsyncAction.ControlInvoked;
if (!isAsync)
{
if (dispatcher.CheckAccess())
{
res.completedSynchronously = true;
Action();
}
else
{
dispatcher.BeginInvoke(Action);
}
}
else
{
dispatcher.BeginInvoke(Action);
}
return res;
} //don't catch these errors - if this fails, we shouldn't try a real thread or threadpool!
if (tryThreadPool)
{
//we are going to use the .NET threadpool
try
{
//this is what actually fires this task off..
bool result = ThreadPool.QueueUserWorkItem(delegate { Action(); });
if (result)
{
res.result = AsyncAction.ThreadPool;
//this means success in queueing and running the item
return res;
}
else
{
//according to docs, this "won't ever happen" - exception instead, but just for kicks.
System.Diagnostics.Debug.WriteLine("Failed to queue in threadpool. Method: " + key);
}
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("Failed to queue in threadpool: " + ex.Message, "Method: " + key);
}
}
//if we got this far, then something up there failed, or they wanted a dedicated thread
Thread t = new Thread((ThreadStart)delegate { Action(); }) { IsBackground = true, Name = ("Async_" + key) };
res.result = AsyncAction.Thread;
t.Start();
return res;
}
