Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Core / System / Linq / Parallel / Merging / MergeEnumerator.cs / 1305376 / MergeEnumerator.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== // =+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ // // MergeEnumerator.cs // //[....] // // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- using System.Collections; using System.Collections.Generic; using System.Diagnostics.Contracts; namespace System.Linq.Parallel { ////// Convenience class used by enumerators that merge many partitions into one. /// ///internal abstract class MergeEnumerator : IEnumerator { protected QueryTaskGroupState m_taskGroupState; //------------------------------------------------------------------------------------ // Initializes a new enumerator with the specified group state. // protected MergeEnumerator(QueryTaskGroupState taskGroupState) { Contract.Assert(taskGroupState != null); m_taskGroupState = taskGroupState; } //----------------------------------------------------------------------------------- // Abstract members of IEnumerator that must be implemented by concrete subclasses. // public abstract TInputOutput Current { get; } public abstract bool MoveNext(); //----------------------------------------------------------------------------------- // Straightforward IEnumerator methods. So subclasses needn't bother. // object IEnumerator.Current { get { return ((IEnumerator )this).Current; } } public virtual void Reset() { // (intentionally left blank) } //----------------------------------------------------------------------------------- // If the enumerator is disposed of before the query finishes, we need to ensure // we properly tear down the query such that exceptions are not lost. // public virtual void Dispose() { // If the enumerator is being disposed of before the query has finished, // we will wait for the query to finish. Cancellation should have already // been initiated, so we just need to ensure exceptions are propagated. if (!m_taskGroupState.IsAlreadyEnded) { Contract.Assert(m_taskGroupState.CancellationState.TopLevelDisposedFlag.Value); m_taskGroupState.QueryEnd(true); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== // =+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ // // MergeEnumerator.cs // // [....] // // =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- using System.Collections; using System.Collections.Generic; using System.Diagnostics.Contracts; namespace System.Linq.Parallel { ////// Convenience class used by enumerators that merge many partitions into one. /// ///internal abstract class MergeEnumerator : IEnumerator { protected QueryTaskGroupState m_taskGroupState; //------------------------------------------------------------------------------------ // Initializes a new enumerator with the specified group state. // protected MergeEnumerator(QueryTaskGroupState taskGroupState) { Contract.Assert(taskGroupState != null); m_taskGroupState = taskGroupState; } //----------------------------------------------------------------------------------- // Abstract members of IEnumerator that must be implemented by concrete subclasses. // public abstract TInputOutput Current { get; } public abstract bool MoveNext(); //----------------------------------------------------------------------------------- // Straightforward IEnumerator methods. So subclasses needn't bother. // object IEnumerator.Current { get { return ((IEnumerator )this).Current; } } public virtual void Reset() { // (intentionally left blank) } //----------------------------------------------------------------------------------- // If the enumerator is disposed of before the query finishes, we need to ensure // we properly tear down the query such that exceptions are not lost. // public virtual void Dispose() { // If the enumerator is being disposed of before the query has finished, // we will wait for the query to finish. Cancellation should have already // been initiated, so we just need to ensure exceptions are propagated. if (!m_taskGroupState.IsAlreadyEnded) { Contract.Assert(m_taskGroupState.CancellationState.TopLevelDisposedFlag.Value); m_taskGroupState.QueryEnd(true); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- NumericExpr.cs
- ConfigurationLocation.cs
- RequestCachePolicy.cs
- Tile.cs
- ModelPerspective.cs
- SafeNativeMethodsCLR.cs
- SoapDocumentMethodAttribute.cs
- PeerTransportSecurityElement.cs
- DynamicExpression.cs
- SchemaDeclBase.cs
- DbModificationCommandTree.cs
- WebEventTraceProvider.cs
- SafeHandle.cs
- SoapReflector.cs
- Encoder.cs
- WorkingDirectoryEditor.cs
- ButtonAutomationPeer.cs
- DependencyPropertyAttribute.cs
- LockedAssemblyCache.cs
- NativeMethodsOther.cs
- RequiredFieldValidator.cs
- Codec.cs
- RowsCopiedEventArgs.cs
- DataDocumentXPathNavigator.cs
- DefaultDialogButtons.cs
- __ComObject.cs
- figurelength.cs
- GridViewDeletedEventArgs.cs
- SmiContextFactory.cs
- XsltException.cs
- XamlClipboardData.cs
- DataPagerCommandEventArgs.cs
- ConfigurationValues.cs
- HttpRuntimeSection.cs
- ItemContainerGenerator.cs
- ProgressBar.cs
- HashMembershipCondition.cs
- AssociationSetEnd.cs
- WorkflowInspectionServices.cs
- WebPartDeleteVerb.cs
- IndexedWhereQueryOperator.cs
- IntPtr.cs
- DataGridViewRowConverter.cs
- ListViewInsertEventArgs.cs
- SimpleTypesSurrogate.cs
- RegexMatchCollection.cs
- ControllableStoryboardAction.cs
- MethodBuilderInstantiation.cs
- ValidationSettings.cs
- ContractMapping.cs
- ValidationHelper.cs
- webeventbuffer.cs
- Matrix.cs
- InkCanvasSelection.cs
- DecoderNLS.cs
- AssociationType.cs
- SafePointer.cs
- UnknownWrapper.cs
- TableLayoutColumnStyleCollection.cs
- SafeArrayRankMismatchException.cs
- Quaternion.cs
- MethodImplAttribute.cs
- ThreadPoolTaskScheduler.cs
- ObjectCacheSettings.cs
- CollectionsUtil.cs
- DataBindingExpressionBuilder.cs
- ExtendedPropertyDescriptor.cs
- AssemblyBuilder.cs
- ClickablePoint.cs
- SimpleHandlerBuildProvider.cs
- HttpResponseWrapper.cs
- ValidateNames.cs
- BitSet.cs
- DummyDataSource.cs
- SymbolMethod.cs
- XmlCharCheckingWriter.cs
- TextParagraph.cs
- DataViewSetting.cs
- ClassData.cs
- GeneralTransformCollection.cs
- LinqDataSourceContextData.cs
- XmlIterators.cs
- HMACSHA1.cs
- Normalization.cs
- PageVisual.cs
- PropertyValueEditor.cs
- LoginView.cs
- X509ChainPolicy.cs
- UMPAttributes.cs
- EntitySetBaseCollection.cs
- MergeLocalizationDirectives.cs
- ThreadExceptionEvent.cs
- KeyValueConfigurationElement.cs
- NegationPusher.cs
- Facet.cs
- DetailsViewAutoFormat.cs
- DesignerDataSchemaClass.cs
- ProviderSettings.cs
- FontSizeConverter.cs
- XmlSchemaComplexType.cs