Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / Util / WorkItem.cs / 1305376 / WorkItem.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.Util { using System.Runtime.InteropServices; using System.Security.Permissions; using System.Threading; // // Support for positing of work items to a different thread // ////// public delegate void WorkItemCallback(); ///[To be supplied.] ////// public class WorkItem { private static bool _useQueueUserWorkItem = true; private static WaitCallback _onQueueUserWorkItemCompletion = new WaitCallback(OnQueueUserWorkItemCompletion); ///[To be supplied.] ////// [SecurityPermission(SecurityAction.Demand, Unrestricted=true)] public static void Post(WorkItemCallback callback) { #if !FEATURE_PAL // ROTORTODO if (Environment.OSVersion.Platform != PlatformID.Win32NT) throw new PlatformNotSupportedException(SR.GetString(SR.RequiresNT)); #else // !FEATURE_PAL throw new NotImplementedException("ROTORTODO"); #endif // !FEATURE_PAL PostInternal(callback); } // assert to disregard the user code up the compressed stack [PermissionSet(SecurityAction.Assert, Unrestricted=true)] private static void CallCallbackWithAssert(WorkItemCallback callback) { callback(); } private static void OnQueueUserWorkItemCompletion(Object state) { WorkItemCallback callback = state as WorkItemCallback; if (callback != null) { CallCallbackWithAssert(callback); } } internal static void PostInternal(WorkItemCallback callback) { if (_useQueueUserWorkItem) { ThreadPool.QueueUserWorkItem(_onQueueUserWorkItemCompletion, callback); } else { WrappedWorkItemCallback w = new WrappedWorkItemCallback(callback); w.Post(); } } } internal class WrappedWorkItemCallback { private GCHandle _rootedThis; private WorkItemCallback _originalCallback; private WorkItemCallback _wrapperCallback; internal WrappedWorkItemCallback(WorkItemCallback callback) { _originalCallback = callback; _wrapperCallback = new WorkItemCallback(this.OnCallback); } internal void Post() { _rootedThis = GCHandle.Alloc(this); if (UnsafeNativeMethods.PostThreadPoolWorkItem(_wrapperCallback) != 1) { _rootedThis.Free(); throw new HttpException(SR.GetString(SR.Cannot_post_workitem)); } } private void OnCallback() { _rootedThis.Free(); _originalCallback(); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //[To be supplied.] ///// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.Util { using System.Runtime.InteropServices; using System.Security.Permissions; using System.Threading; // // Support for positing of work items to a different thread // ////// public delegate void WorkItemCallback(); ///[To be supplied.] ////// public class WorkItem { private static bool _useQueueUserWorkItem = true; private static WaitCallback _onQueueUserWorkItemCompletion = new WaitCallback(OnQueueUserWorkItemCompletion); ///[To be supplied.] ////// [SecurityPermission(SecurityAction.Demand, Unrestricted=true)] public static void Post(WorkItemCallback callback) { #if !FEATURE_PAL // ROTORTODO if (Environment.OSVersion.Platform != PlatformID.Win32NT) throw new PlatformNotSupportedException(SR.GetString(SR.RequiresNT)); #else // !FEATURE_PAL throw new NotImplementedException("ROTORTODO"); #endif // !FEATURE_PAL PostInternal(callback); } // assert to disregard the user code up the compressed stack [PermissionSet(SecurityAction.Assert, Unrestricted=true)] private static void CallCallbackWithAssert(WorkItemCallback callback) { callback(); } private static void OnQueueUserWorkItemCompletion(Object state) { WorkItemCallback callback = state as WorkItemCallback; if (callback != null) { CallCallbackWithAssert(callback); } } internal static void PostInternal(WorkItemCallback callback) { if (_useQueueUserWorkItem) { ThreadPool.QueueUserWorkItem(_onQueueUserWorkItemCompletion, callback); } else { WrappedWorkItemCallback w = new WrappedWorkItemCallback(callback); w.Post(); } } } internal class WrappedWorkItemCallback { private GCHandle _rootedThis; private WorkItemCallback _originalCallback; private WorkItemCallback _wrapperCallback; internal WrappedWorkItemCallback(WorkItemCallback callback) { _originalCallback = callback; _wrapperCallback = new WorkItemCallback(this.OnCallback); } internal void Post() { _rootedThis = GCHandle.Alloc(this); if (UnsafeNativeMethods.PostThreadPoolWorkItem(_wrapperCallback) != 1) { _rootedThis.Free(); throw new HttpException(SR.GetString(SR.Cannot_post_workitem)); } } private void OnCallback() { _rootedThis.Free(); _originalCallback(); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.[To be supplied.] ///
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- FunctionMappingTranslator.cs
- ImageConverter.cs
- WorkflowApplicationEventArgs.cs
- MILUtilities.cs
- Material.cs
- InvalidOleVariantTypeException.cs
- ReturnEventArgs.cs
- ObjectDataSourceMethodEventArgs.cs
- UpdatePanel.cs
- CacheVirtualItemsEvent.cs
- shaper.cs
- TextDecoration.cs
- RequestQueue.cs
- DataGridView.cs
- TypefaceCollection.cs
- ConnectionPoint.cs
- SafeFileMappingHandle.cs
- StoreContentChangedEventArgs.cs
- HitTestFilterBehavior.cs
- StringOutput.cs
- ExpandSegment.cs
- SynchronizedMessageSource.cs
- GeometryModel3D.cs
- MenuItemCollectionEditorDialog.cs
- DataGridViewCellStateChangedEventArgs.cs
- ViewGenerator.cs
- FlowDocumentView.cs
- StoreItemCollection.Loader.cs
- StylusOverProperty.cs
- Activity.cs
- AuthStoreRoleProvider.cs
- DataRowChangeEvent.cs
- TakeOrSkipWhileQueryOperator.cs
- WsdlBuildProvider.cs
- WebDescriptionAttribute.cs
- TemplatedControlDesigner.cs
- CompositeControl.cs
- SmtpReplyReader.cs
- SchemaElementDecl.cs
- PropertyGroupDescription.cs
- ButtonStandardAdapter.cs
- EventLogPermissionEntry.cs
- CqlParserHelpers.cs
- SiteMapDataSource.cs
- DataServiceBehavior.cs
- ToolStripDropTargetManager.cs
- SuppressIldasmAttribute.cs
- Tracking.cs
- NavigationPropertySingletonExpression.cs
- ActivityCodeDomReferenceService.cs
- DataPager.cs
- ValidateNames.cs
- HttpCachePolicyBase.cs
- ConcurrentStack.cs
- RTLAwareMessageBox.cs
- PropertyInformation.cs
- ValidationEventArgs.cs
- _ContextAwareResult.cs
- WebPartsPersonalizationAuthorization.cs
- MsdtcWrapper.cs
- NetDispatcherFaultException.cs
- TcpHostedTransportConfiguration.cs
- HttpPostedFile.cs
- TableLayoutRowStyleCollection.cs
- ExternalException.cs
- OperatingSystem.cs
- DesignerView.xaml.cs
- EntityAdapter.cs
- SetStoryboardSpeedRatio.cs
- UriSectionData.cs
- BoolExpressionVisitors.cs
- TextEndOfParagraph.cs
- ACL.cs
- ExpandableObjectConverter.cs
- TableParagraph.cs
- AuthenticationModuleElementCollection.cs
- NonVisualControlAttribute.cs
- MembershipSection.cs
- FilePresentation.cs
- HyperLinkStyle.cs
- StringComparer.cs
- TemplateBindingExtensionConverter.cs
- WebPartVerbCollection.cs
- IntSecurity.cs
- StylusPointPropertyId.cs
- Double.cs
- LongValidator.cs
- While.cs
- SymbolUsageManager.cs
- TreeViewItem.cs
- BamlWriter.cs
- ApplicationDirectory.cs
- FunctionNode.cs
- PrintDocument.cs
- PreloadedPackages.cs
- FixedSOMContainer.cs
- SoundPlayer.cs
- ItemAutomationPeer.cs
- Assembly.cs
- GZipDecoder.cs