Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx40 / System.Activities / System / Activities / Debugger / ThreadWorkerController.cs / 1305376 / ThreadWorkerController.cs
//------------------------------------------------------------------------------ // Copyright (c) Microsoft Corporation. All rights reserved. //----------------------------------------------------------------------------- namespace System.Activities.Debugger { using System; using System.Collections.Generic; using System.Diagnostics; using System.Diagnostics.CodeAnalysis; using System.Diagnostics.SymbolStore; using System.Reflection; using System.Reflection.Emit; using System.Runtime; using System.Threading; // Define an auxiliary thread codegen technique for islands. // This executes the islands on a dedicated worker thread. The worker thread's // physical callstack then maps to the interpreter's virtual callstack. // It has an excellent Step-in/Step-over/Step-Out experience. [DebuggerNonUserCode] public class ThreadWorkerController { StateManager stateManager; // Set to true to notify to Break on first instruction. This helps the F11 on startup experience. // Since the islands are on a new thread, there may be no user code on the main thread and so // F11 doesn't work. Thus the new worker thread needs to fire some break event. // This gets reset after the 'startup breakpoint'. // The initial Properties can override this. bool breakOnStartup; // Own the worker thread. Thread worker; // Signalled when the main thread wants to send an event to the worker thread. // The main thread fills out the data first. AutoResetEvent eventSend; // Signalled by the worker thread when it's finished handling the event and // the main thread can resume. AutoResetEvent eventDone; EventCode eventCode; // Parameter for enter message. VirtualStackFrame enterStackParameter; internal void Initialize(string threadName, StateManager manager) { this.stateManager = manager; this.breakOnStartup = this.stateManager.ManagerProperties.BreakOnStartup; CreateWorkerThread(threadName); } internal void Exit() { // Implement with an unbalanced Leave. // This will get the Worker to return and the ThreadProc to exit. this.LeaveState(); this.worker.Join(); } [DebuggerHidden] void WorkerThreadProc() { Worker(false); this.eventDone.Set(); } // Private Entry point called from islands. Must be public so that the islands can invoke it. [Fx.Tag.InheritThrows(From = "Worker")] [DebuggerHidden] public static void IslandWorker(ThreadWorkerController controller) { if (controller == null) { throw FxTrace.Exception.ArgumentNull("controller"); } controller.Worker(true); } [DebuggerHidden] internal void Worker(bool isAtStartup) { if (isAtStartup) { // Fire the 1-time "startup" breakpoint. if (this.breakOnStartup) { if (Debugger.IsAttached) { Debugger.Break(); } this.breakOnStartup = false; } this.eventDone.Set(); } // The final terminator is when leave returns, but from a recursive call. bool leave = false; while (!leave) { this.eventSend.WaitOne(); switch (eventCode) { case EventCode.Enter: // Call Island for enterStackParameter this.stateManager.InvokeWorker(this, enterStackParameter); // resume from SendLeave() this.eventDone.Set(); break; case EventCode.Leave: leave = true; return; case EventCode.Break: Debugger.Break(); this.eventDone.Set(); break; } } } void CreateWorkerThread(string threadName) { this.eventSend = new AutoResetEvent(false); this.eventDone = new AutoResetEvent(false); this.worker = new Thread(new ThreadStart(WorkerThreadProc)); string name = string.IsNullOrEmpty(threadName) ? this.stateManager.ManagerProperties.AuxiliaryThreadName : threadName; if (name != null) { this.worker.Name = name; } this.worker.Start(); } internal void EnterState(VirtualStackFrame newFrame) { this.eventCode = EventCode.Enter; this.enterStackParameter = newFrame; this.eventSend.Set(); // Block until Island executes Nop, // giving BPs a chance to be hit. // Must block here if the island is stopped at a breakpoint. this.eventDone.WaitOne(); } internal void LeaveState() { this.eventCode = EventCode.Leave; this.eventSend.Set(); // Block until call has exited. this.eventDone.WaitOne(); } internal void Break() { this.eventCode = EventCode.Break; this.eventSend.Set(); this.eventDone.WaitOne(); } // Type of event being fired. enum EventCode { Enter, Leave, Break }; } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
![Network programming in C#, Network Programming in VB.NET, Network Programming in .NET](/images/book.jpg)
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- ServicePoint.cs
- DataObjectCopyingEventArgs.cs
- RecognizedWordUnit.cs
- RoleGroupCollection.cs
- OptimizedTemplateContentHelper.cs
- VisemeEventArgs.cs
- AssociationEndMember.cs
- DataGridViewRowErrorTextNeededEventArgs.cs
- DoubleCollectionConverter.cs
- AttachedPropertyBrowsableAttribute.cs
- MediaCommands.cs
- PathFigureCollection.cs
- MailMessage.cs
- DBConnectionString.cs
- RectAnimationBase.cs
- GcSettings.cs
- MethodToken.cs
- SQLBoolean.cs
- InputLanguageEventArgs.cs
- Events.cs
- EFDataModelProvider.cs
- PlainXmlSerializer.cs
- AssertHelper.cs
- ETagAttribute.cs
- DataListItemEventArgs.cs
- DocumentViewerHelper.cs
- MsmqActivation.cs
- FixedPosition.cs
- SqlNamer.cs
- RuleSettingsCollection.cs
- VSDExceptions.cs
- BufferModesCollection.cs
- XPathScanner.cs
- FormViewModeEventArgs.cs
- DocumentPageHost.cs
- HtmlTableCellCollection.cs
- X509CertificateCollection.cs
- PasswordDeriveBytes.cs
- Nullable.cs
- AdRotatorDesigner.cs
- WebPartCloseVerb.cs
- MultiView.cs
- _OverlappedAsyncResult.cs
- SystemInfo.cs
- PagedDataSource.cs
- WebServiceMethodData.cs
- FaultPropagationRecord.cs
- IRCollection.cs
- Validator.cs
- AccessDataSourceView.cs
- TagMapCollection.cs
- Normalization.cs
- SqlRetyper.cs
- PersonalizationProviderHelper.cs
- TagPrefixCollection.cs
- ParameterModifier.cs
- RelativeSource.cs
- TypeLibConverter.cs
- NamespaceDisplay.xaml.cs
- ConnectionStringsExpressionBuilder.cs
- FileDialog_Vista.cs
- DbConnectionStringBuilder.cs
- AxisAngleRotation3D.cs
- ExceptionValidationRule.cs
- SelectionProcessor.cs
- LockRecoveryTask.cs
- XamlStream.cs
- Italic.cs
- SecurityTokenAuthenticator.cs
- WebRequestModuleElement.cs
- ForceCopyBuildProvider.cs
- Adorner.cs
- Codec.cs
- Viewport2DVisual3D.cs
- DataGrid.cs
- Compiler.cs
- ToolStripGripRenderEventArgs.cs
- MethodCallConverter.cs
- IdentityHolder.cs
- ListBase.cs
- ExtractorMetadata.cs
- OdbcInfoMessageEvent.cs
- SmtpNetworkElement.cs
- ClientOperation.cs
- ColorTransformHelper.cs
- Vector.cs
- FillRuleValidation.cs
- PageBuildProvider.cs
- cookiecontainer.cs
- Preprocessor.cs
- WpfGeneratedKnownTypes.cs
- BamlCollectionHolder.cs
- FreezableCollection.cs
- Peer.cs
- NamespaceMapping.cs
- AspNetHostingPermission.cs
- ScrollChangedEventArgs.cs
- ReadWriteObjectLock.cs
- QueryParameter.cs
- BrowserDefinition.cs