Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / wpf / src / Framework / MS / Internal / Utility / SponsorHelper.cs / 1 / 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. 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
- AssemblyBuilderData.cs
- FileUtil.cs
- Int16Storage.cs
- PropertiesTab.cs
- NonSerializedAttribute.cs
- MethodCallTranslator.cs
- IDQuery.cs
- HtmlTableCell.cs
- GridViewCancelEditEventArgs.cs
- PageAdapter.cs
- Relationship.cs
- PanelDesigner.cs
- DataBindingCollection.cs
- ControlPaint.cs
- DefaultBinder.cs
- BitmapEffectInput.cs
- DrawingContext.cs
- AutomationEventArgs.cs
- OverflowException.cs
- BitVector32.cs
- EntityConnectionStringBuilderItem.cs
- ObjectQueryState.cs
- BlurEffect.cs
- UpnEndpointIdentityExtension.cs
- ValidatedControlConverter.cs
- DataGridViewRowErrorTextNeededEventArgs.cs
- ProcessHostServerConfig.cs
- CodeExpressionStatement.cs
- SourceExpressionException.cs
- EventLogPermission.cs
- MergeFilterQuery.cs
- itemelement.cs
- SystemIPAddressInformation.cs
- QilName.cs
- EntityCodeGenerator.cs
- LogArchiveSnapshot.cs
- Literal.cs
- WinCategoryAttribute.cs
- DatagridviewDisplayedBandsData.cs
- TemplateBamlTreeBuilder.cs
- NavigationFailedEventArgs.cs
- OwnerDrawPropertyBag.cs
- DataRecord.cs
- SqlExpander.cs
- WebConfigManager.cs
- ItemList.cs
- TemplateBamlTreeBuilder.cs
- XmlQualifiedName.cs
- SecurityDocument.cs
- TraceSwitch.cs
- XmlSchemaComplexContentRestriction.cs
- JavaScriptObjectDeserializer.cs
- MembershipSection.cs
- StreamUpgradeProvider.cs
- DbConnectionPool.cs
- RSAPKCS1SignatureDeformatter.cs
- LexicalChunk.cs
- TextPointerBase.cs
- _NegoStream.cs
- DbParameterHelper.cs
- WebBrowserNavigatedEventHandler.cs
- FormsAuthenticationEventArgs.cs
- DesignerActionVerbList.cs
- WebBrowserBase.cs
- SymDocumentType.cs
- HGlobalSafeHandle.cs
- ItemContainerGenerator.cs
- PropertyRef.cs
- RequestContext.cs
- HttpTransportManager.cs
- MailDefinition.cs
- EncryptedPackage.cs
- Calendar.cs
- ConstructorNeedsTagAttribute.cs
- ObsoleteAttribute.cs
- ArgumentNullException.cs
- ConstraintCollection.cs
- DrawingGroupDrawingContext.cs
- EntityDataSourceDesigner.cs
- XPathArrayIterator.cs
- FtpCachePolicyElement.cs
- ToolStripSystemRenderer.cs
- CredentialSelector.cs
- InstallerTypeAttribute.cs
- DataConnectionHelper.cs
- CachedCompositeFamily.cs
- PassportAuthentication.cs
- ObjectMaterializedEventArgs.cs
- RequestContext.cs
- xmlsaver.cs
- DriveInfo.cs
- NumericPagerField.cs
- StrokeNode.cs
- StyleCollection.cs
- BindingListCollectionView.cs
- VoiceObjectToken.cs
- CalendarSelectionChangedEventArgs.cs
- DataSet.cs
- GridView.cs
- DataShape.cs