Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Framework / MS / Internal / Utility / SponsorHelper.cs / 1305600 / SponsorHelper.cs
using System; using System.Diagnostics; using System.Runtime.Remoting; using System.Runtime.Remoting.Lifetime; using System.Security; using System.Security.Permissions; namespace MS.Internal.Utility { #region SponsorHelper Class ////// We either mark the Sponsor as MarshalByRef or make it serializable. /// If we make it MarshalByRef, then this sponsor which is used to control /// the lifetime of a MBR object in turn needs to have another sponsor OR /// the sponsor can mark itself to remain alive for the life of the AppDomain /// by overriding InitializeLifetimeService and returning null OR the object /// can be marked as Serializeable instead of MBR in which case it is marshaled /// by value to the client appdomain and will not have the state of the host /// appdomain to make renewal decisions. In our case we don't have any state so /// its easier and better perf-wise to mark it Serializable. /// [Serializable] internal class SponsorHelper : ISponsor { #region Private Data private ILease _lease; private TimeSpan _timespan; #endregion Private Data #region Constructor internal SponsorHelper(ILease lease, TimeSpan timespan) { Debug.Assert(lease != null && timespan != null, "Lease and TimeSpan arguments cannot be null"); _lease = lease; _timespan = timespan; } #endregion Constructor #region ISponsor Interface TimeSpan ISponsor.Renewal(ILease lease) { if (lease == null) { throw new ArgumentNullException("lease"); } return _timespan; } #endregion ISponsor Interface #region Internal Methods ////// Critical - asserts permission for RemotingConfiguration /// TreatAsSafe - The constructor for this object is internal and this function does not take /// random parameters and hence can�t be used to keep random objects alive or access any other object /// in the application. /// [SecurityCritical, SecurityTreatAsSafe] [SecurityPermissionAttribute(SecurityAction.Assert, RemotingConfiguration = true)] internal void Register() { _lease.Register((ISponsor)this); } ////// Critical - asserts permission for RemotingConfiguration /// TreatAsSafe - The constructor for this object is internal and this function does not take /// random parameters and hence can�t be used to keep random objects alive or access any other object /// in the application. /// [SecurityCritical, SecurityTreatAsSafe] [SecurityPermissionAttribute(SecurityAction.Assert, RemotingConfiguration = true)] internal void Unregister() { _lease.Unregister((ISponsor)this); } #endregion Internal Methods } #endregion SponsorHelper Class } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- Exception.cs
- ParseChildrenAsPropertiesAttribute.cs
- XamlSerializer.cs
- NetSectionGroup.cs
- ScaleTransform3D.cs
- __ConsoleStream.cs
- DataControlField.cs
- DataBindingExpressionBuilder.cs
- RowVisual.cs
- VerticalAlignConverter.cs
- InheritanceService.cs
- AdapterDictionary.cs
- _ReceiveMessageOverlappedAsyncResult.cs
- GeometryGroup.cs
- ArglessEventHandlerProxy.cs
- SqlDataSourceStatusEventArgs.cs
- Pen.cs
- SmiRecordBuffer.cs
- FragmentNavigationEventArgs.cs
- XmlStreamStore.cs
- SubstitutionDesigner.cs
- StringConcat.cs
- EdmTypeAttribute.cs
- HighlightComponent.cs
- CodeGeneratorAttribute.cs
- DiscoveryClientBindingElement.cs
- ThreadSafeList.cs
- PageTheme.cs
- documentsequencetextcontainer.cs
- DefaultPrintController.cs
- CompModSwitches.cs
- SqlExpressionNullability.cs
- MarkedHighlightComponent.cs
- LogAppendAsyncResult.cs
- PrimitiveType.cs
- EnumBuilder.cs
- WorkflowInstanceExtensionCollection.cs
- AudienceUriMode.cs
- XamlPathDataSerializer.cs
- GregorianCalendar.cs
- TileBrush.cs
- FileDialog_Vista_Interop.cs
- Delegate.cs
- X509CertificateValidationMode.cs
- Image.cs
- SecurityElement.cs
- SelectionGlyph.cs
- HostExecutionContextManager.cs
- DependencyObjectProvider.cs
- ReferentialConstraintRoleElement.cs
- TempFiles.cs
- DelegatingStream.cs
- DataGridViewCellConverter.cs
- ByteStack.cs
- TableLayoutPanelCellPosition.cs
- RC2CryptoServiceProvider.cs
- TextDocumentView.cs
- TextSearch.cs
- ProfileManager.cs
- DetailsViewRowCollection.cs
- AddingNewEventArgs.cs
- SyndicationPerson.cs
- Button.cs
- ExpressionDumper.cs
- SplitContainerDesigner.cs
- UidPropertyAttribute.cs
- CssClassPropertyAttribute.cs
- SqlResolver.cs
- XmlSchemaGroup.cs
- SafeRightsManagementEnvironmentHandle.cs
- InvalidCommandTreeException.cs
- BezierSegment.cs
- ScriptHandlerFactory.cs
- WebServiceParameterData.cs
- BuilderPropertyEntry.cs
- ApplicationHost.cs
- NotCondition.cs
- Light.cs
- DBNull.cs
- SingleAnimationBase.cs
- QilInvokeEarlyBound.cs
- TimeSpanSecondsConverter.cs
- ComplexTypeEmitter.cs
- ComboBoxItem.cs
- HostingEnvironmentSection.cs
- DebugView.cs
- _ContextAwareResult.cs
- MetadataArtifactLoaderCompositeResource.cs
- OleDbConnectionFactory.cs
- SerializableAttribute.cs
- HashRepartitionEnumerator.cs
- CompositeDataBoundControl.cs
- EventLogPropertySelector.cs
- HtmlTableCell.cs
- CopyOfAction.cs
- BevelBitmapEffect.cs
- TouchesOverProperty.cs
- SoapExtensionImporter.cs
- ExtensibleClassFactory.cs
- GlyphManager.cs