Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / xsp / System / Web / PartitionResolver.cs / 1 / PartitionResolver.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web { using System; using System.Configuration; using System.Collections; using System.Threading; using System.IO; using System.Web; using System.Web.Caching; using System.Web.Util; using System.Data; using System.Data.SqlClient; using System.Text; using System.Security.Principal; using System.Xml; using System.Collections.Specialized; using System.Configuration.Provider; using System.Globalization; using System.Web.Management; using System.Web.Hosting; using System.Web.Configuration; using System.Security.Permissions; [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] public interface IPartitionResolver { void Initialize(); string ResolvePartition(Object key); } internal interface IPartitionInfo { string GetTracingPartitionString(); } internal delegate IPartitionInfo CreatePartitionInfo(string connectionString); class PartitionManager : IDisposable { internal PartitionManager(CreatePartitionInfo createCallback) { _createCallback = createCallback; } HybridDictionary _partitions = new HybridDictionary(); ReaderWriterLock _lock = new ReaderWriterLock(); CreatePartitionInfo _createCallback; internal object GetPartition(IPartitionResolver partitionResolver, string id) { if (EtwTrace.IsTraceEnabled(EtwTraceLevel.Verbose, EtwTraceFlags.Infrastructure)) EtwTrace.Trace(EtwTraceType.ETW_TYPE_SESSIONSTATE_PARTITION_START, HttpContext.Current.WorkerRequest, partitionResolver.GetType().FullName, id); string partitionString = null; string errorMessage = null; IPartitionInfo partitionInfo = null; try { try { partitionString = partitionResolver.ResolvePartition(id); if (partitionString == null) { throw new HttpException( SR.GetString(SR.Bad_partition_resolver_connection_string, partitionResolver.GetType().FullName)); } } catch (Exception e) { errorMessage = e.Message; throw; } try { _lock.AcquireReaderLock(-1); partitionInfo = (IPartitionInfo)_partitions[partitionString]; if (partitionInfo != null) { Debug.Trace("PartitionManager", "id=" + id + "; partitionString=" + partitionString); return partitionInfo; } } finally { if (_lock.IsReaderLockHeld) { _lock.ReleaseReaderLock(); } } // Not found. Has to add it. try { _lock.AcquireWriterLock(-1); // One more time partitionInfo = (IPartitionInfo)_partitions[partitionString]; if (partitionInfo == null) { partitionInfo = _createCallback(partitionString); Debug.Trace("PartitionManager", "Add a new partition; id=" + id + "; partitionString=" + partitionString); _partitions.Add(partitionString, partitionInfo); } Debug.Trace("PartitionManager", "id=" + id + "; partitionString=" + partitionString); return partitionInfo; } finally { if (_lock.IsWriterLockHeld) { _lock.ReleaseWriterLock(); } } } finally { if (EtwTrace.IsTraceEnabled(EtwTraceLevel.Verbose, EtwTraceFlags.Infrastructure)) { string msg = errorMessage; if (msg == null) { if (partitionInfo != null) { msg = partitionInfo.GetTracingPartitionString(); } else { msg = String.Empty; } } EtwTrace.Trace(EtwTraceType.ETW_TYPE_SESSIONSTATE_PARTITION_END, HttpContext.Current.WorkerRequest, msg); } } } public void Dispose() { if (_partitions == null) { return; } try { _lock.AcquireWriterLock(-1); if (_partitions != null) { foreach (PartitionInfo partitionInfo in _partitions.Values) { partitionInfo.Dispose(); } _partitions = null; } } catch { // ignore exceptions in dispose } finally { if (_lock.IsWriterLockHeld) { _lock.ReleaseWriterLock(); } } } } internal class PartitionInfo : IDisposable, IPartitionInfo { ResourcePool _rpool; internal PartitionInfo(ResourcePool rpool) { _rpool = rpool; } internal object RetrieveResource() { return _rpool.RetrieveResource(); } internal void StoreResource(IDisposable o) { _rpool.StoreResource(o); } protected virtual string TracingPartitionString { get { return String.Empty; } } string IPartitionInfo.GetTracingPartitionString() { return TracingPartitionString; } public void Dispose() { if (_rpool == null) { return; } lock (this) { if (_rpool != null) { _rpool.Dispose(); _rpool = null; } } } }; } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web { using System; using System.Configuration; using System.Collections; using System.Threading; using System.IO; using System.Web; using System.Web.Caching; using System.Web.Util; using System.Data; using System.Data.SqlClient; using System.Text; using System.Security.Principal; using System.Xml; using System.Collections.Specialized; using System.Configuration.Provider; using System.Globalization; using System.Web.Management; using System.Web.Hosting; using System.Web.Configuration; using System.Security.Permissions; [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] public interface IPartitionResolver { void Initialize(); string ResolvePartition(Object key); } internal interface IPartitionInfo { string GetTracingPartitionString(); } internal delegate IPartitionInfo CreatePartitionInfo(string connectionString); class PartitionManager : IDisposable { internal PartitionManager(CreatePartitionInfo createCallback) { _createCallback = createCallback; } HybridDictionary _partitions = new HybridDictionary(); ReaderWriterLock _lock = new ReaderWriterLock(); CreatePartitionInfo _createCallback; internal object GetPartition(IPartitionResolver partitionResolver, string id) { if (EtwTrace.IsTraceEnabled(EtwTraceLevel.Verbose, EtwTraceFlags.Infrastructure)) EtwTrace.Trace(EtwTraceType.ETW_TYPE_SESSIONSTATE_PARTITION_START, HttpContext.Current.WorkerRequest, partitionResolver.GetType().FullName, id); string partitionString = null; string errorMessage = null; IPartitionInfo partitionInfo = null; try { try { partitionString = partitionResolver.ResolvePartition(id); if (partitionString == null) { throw new HttpException( SR.GetString(SR.Bad_partition_resolver_connection_string, partitionResolver.GetType().FullName)); } } catch (Exception e) { errorMessage = e.Message; throw; } try { _lock.AcquireReaderLock(-1); partitionInfo = (IPartitionInfo)_partitions[partitionString]; if (partitionInfo != null) { Debug.Trace("PartitionManager", "id=" + id + "; partitionString=" + partitionString); return partitionInfo; } } finally { if (_lock.IsReaderLockHeld) { _lock.ReleaseReaderLock(); } } // Not found. Has to add it. try { _lock.AcquireWriterLock(-1); // One more time partitionInfo = (IPartitionInfo)_partitions[partitionString]; if (partitionInfo == null) { partitionInfo = _createCallback(partitionString); Debug.Trace("PartitionManager", "Add a new partition; id=" + id + "; partitionString=" + partitionString); _partitions.Add(partitionString, partitionInfo); } Debug.Trace("PartitionManager", "id=" + id + "; partitionString=" + partitionString); return partitionInfo; } finally { if (_lock.IsWriterLockHeld) { _lock.ReleaseWriterLock(); } } } finally { if (EtwTrace.IsTraceEnabled(EtwTraceLevel.Verbose, EtwTraceFlags.Infrastructure)) { string msg = errorMessage; if (msg == null) { if (partitionInfo != null) { msg = partitionInfo.GetTracingPartitionString(); } else { msg = String.Empty; } } EtwTrace.Trace(EtwTraceType.ETW_TYPE_SESSIONSTATE_PARTITION_END, HttpContext.Current.WorkerRequest, msg); } } } public void Dispose() { if (_partitions == null) { return; } try { _lock.AcquireWriterLock(-1); if (_partitions != null) { foreach (PartitionInfo partitionInfo in _partitions.Values) { partitionInfo.Dispose(); } _partitions = null; } } catch { // ignore exceptions in dispose } finally { if (_lock.IsWriterLockHeld) { _lock.ReleaseWriterLock(); } } } } internal class PartitionInfo : IDisposable, IPartitionInfo { ResourcePool _rpool; internal PartitionInfo(ResourcePool rpool) { _rpool = rpool; } internal object RetrieveResource() { return _rpool.RetrieveResource(); } internal void StoreResource(IDisposable o) { _rpool.StoreResource(o); } protected virtual string TracingPartitionString { get { return String.Empty; } } string IPartitionInfo.GetTracingPartitionString() { return TracingPartitionString; } public void Dispose() { if (_rpool == null) { return; } lock (this) { if (_rpool != null) { _rpool.Dispose(); _rpool = null; } } } }; } // 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
- InternalBufferManager.cs
- CodeVariableDeclarationStatement.cs
- MouseWheelEventArgs.cs
- CompareInfo.cs
- ParserContext.cs
- ExtensibleClassFactory.cs
- OleDbException.cs
- DataObjectEventArgs.cs
- CharKeyFrameCollection.cs
- NumberFunctions.cs
- HttpModulesSection.cs
- TextRangeEdit.cs
- RoutedEventArgs.cs
- PathFigure.cs
- DataColumnCollection.cs
- FactoryGenerator.cs
- HyperLinkStyle.cs
- IpcChannel.cs
- PersistenceIOParticipant.cs
- ForEachAction.cs
- TreeViewCancelEvent.cs
- TextContainerChangeEventArgs.cs
- HtmlInputCheckBox.cs
- XmlQueryCardinality.cs
- CacheEntry.cs
- WindowProviderWrapper.cs
- MulticastIPAddressInformationCollection.cs
- PolicyLevel.cs
- LinkButton.cs
- smtpconnection.cs
- StructuredTypeEmitter.cs
- WorkflowServiceAttributesTypeConverter.cs
- RandomNumberGenerator.cs
- ProxyHwnd.cs
- CompoundFileReference.cs
- ContentPlaceHolder.cs
- TcpProcessProtocolHandler.cs
- SystemColors.cs
- DynamicActivityXamlReader.cs
- OdbcConnectionStringbuilder.cs
- SrgsToken.cs
- TreeViewHitTestInfo.cs
- DataGridViewTextBoxColumn.cs
- OrthographicCamera.cs
- TypeLoadException.cs
- FormViewInsertEventArgs.cs
- HttpPostClientProtocol.cs
- BindingExpressionBase.cs
- SwitchCase.cs
- ConsumerConnectionPointCollection.cs
- NamespaceExpr.cs
- Automation.cs
- BaseCodePageEncoding.cs
- _TimerThread.cs
- ButtonChrome.cs
- IODescriptionAttribute.cs
- WorkflowOperationFault.cs
- _ShellExpression.cs
- ConfigXmlSignificantWhitespace.cs
- Imaging.cs
- ArraySet.cs
- DBSqlParser.cs
- ChannelRequirements.cs
- RootAction.cs
- TemplateControl.cs
- StringUtil.cs
- WsdlBuildProvider.cs
- GPRECT.cs
- UseAttributeSetsAction.cs
- MouseEvent.cs
- _NtlmClient.cs
- PenThread.cs
- AttributeData.cs
- ImageAttributes.cs
- XmlSchema.cs
- MeasureItemEvent.cs
- OverrideMode.cs
- ECDsaCng.cs
- PtsCache.cs
- HtmlFormAdapter.cs
- MouseWheelEventArgs.cs
- DrawingVisual.cs
- ExpressionPrefixAttribute.cs
- LazyTextWriterCreator.cs
- ToolStripEditorManager.cs
- RowToParametersTransformer.cs
- JavaScriptString.cs
- NumberFormatInfo.cs
- TextEditorCharacters.cs
- BaseProcessProtocolHandler.cs
- EditorBrowsableAttribute.cs
- CodeIndexerExpression.cs
- FixUpCollection.cs
- MenuItem.cs
- basenumberconverter.cs
- FileLogRecordStream.cs
- MultiAsyncResult.cs
- EmissiveMaterial.cs
- X509ServiceCertificateAuthentication.cs
- JsonReader.cs