Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / Compilation / TimeStampChecker.cs / 1305376 / TimeStampChecker.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.Compilation { using System; using System.Collections; using System.IO; using System.Web; using System.Web.Hosting; using Debug = System.Web.Util.Debug; internal class TimeStampChecker { internal const String CallContextSlotName = "TSC"; private Hashtable _timeStamps = new Hashtable(StringComparer.OrdinalIgnoreCase); private static TimeStampChecker Current { get { TimeStampChecker tsc = (TimeStampChecker)System.Runtime.Remoting.Messaging.CallContext.GetData( CallContextSlotName) as TimeStampChecker; // Create it on demand if (tsc == null) { tsc = new TimeStampChecker(); Debug.Trace("TimeStampChecker", "Creating new TimeStampChecker"); System.Runtime.Remoting.Messaging.CallContext.SetData(CallContextSlotName, tsc); } return tsc; } } internal static void AddFile(string virtualPath, string path) { Current.AddFileInternal(virtualPath, path); } private void AddFileInternal(string virtualPath, string path) { DateTime lastWriteTimeUtc = File.GetLastWriteTimeUtc(path); if (_timeStamps.Contains(virtualPath)) { DateTime storedValue = (DateTime)_timeStamps[virtualPath]; // Already found to have changed before if (storedValue == DateTime.MaxValue) { Debug.Trace("TimeStampChecker", "AddFileInternal: Same time stamp (" + path + ")"); return; } // If it's different, set it to MaxValue as marker of being invalid if (storedValue != lastWriteTimeUtc) { _timeStamps[virtualPath] = DateTime.MaxValue; Debug.Trace("TimeStampChecker", "AddFileInternal: Changed time stamp (" + path + ")"); } } else { // New path: just add it _timeStamps[virtualPath] = lastWriteTimeUtc; Debug.Trace("TimeStampChecker", "AddFileInternal: New path (" + path + ")"); } } internal static bool CheckFilesStillValid(string key, ICollection virtualPaths) { if (virtualPaths == null) return true; return Current.CheckFilesStillValidInternal(key, virtualPaths); } private bool CheckFilesStillValidInternal(string key, ICollection virtualPaths) { Debug.Trace("TimeStampChecker", "CheckFilesStillValidInternal (" + key + ")"); foreach (string virtualPath in virtualPaths) { if (!_timeStamps.Contains(virtualPath)) continue; string path = HostingEnvironment.MapPath(virtualPath); DateTime lastWriteTimeUtc = File.GetLastWriteTimeUtc(path); DateTime storedValue = (DateTime)_timeStamps[virtualPath]; // If it changed, then it's not valid if (lastWriteTimeUtc != storedValue) { Debug.Trace("TimeStampChecker", "CheckFilesStillValidInternal: File (" + path + ") has changed!"); return false; } } Debug.Trace("TimeStampChecker", "CheckFilesStillValidInternal (" + key + ") is still valid"); return true; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.Compilation { using System; using System.Collections; using System.IO; using System.Web; using System.Web.Hosting; using Debug = System.Web.Util.Debug; internal class TimeStampChecker { internal const String CallContextSlotName = "TSC"; private Hashtable _timeStamps = new Hashtable(StringComparer.OrdinalIgnoreCase); private static TimeStampChecker Current { get { TimeStampChecker tsc = (TimeStampChecker)System.Runtime.Remoting.Messaging.CallContext.GetData( CallContextSlotName) as TimeStampChecker; // Create it on demand if (tsc == null) { tsc = new TimeStampChecker(); Debug.Trace("TimeStampChecker", "Creating new TimeStampChecker"); System.Runtime.Remoting.Messaging.CallContext.SetData(CallContextSlotName, tsc); } return tsc; } } internal static void AddFile(string virtualPath, string path) { Current.AddFileInternal(virtualPath, path); } private void AddFileInternal(string virtualPath, string path) { DateTime lastWriteTimeUtc = File.GetLastWriteTimeUtc(path); if (_timeStamps.Contains(virtualPath)) { DateTime storedValue = (DateTime)_timeStamps[virtualPath]; // Already found to have changed before if (storedValue == DateTime.MaxValue) { Debug.Trace("TimeStampChecker", "AddFileInternal: Same time stamp (" + path + ")"); return; } // If it's different, set it to MaxValue as marker of being invalid if (storedValue != lastWriteTimeUtc) { _timeStamps[virtualPath] = DateTime.MaxValue; Debug.Trace("TimeStampChecker", "AddFileInternal: Changed time stamp (" + path + ")"); } } else { // New path: just add it _timeStamps[virtualPath] = lastWriteTimeUtc; Debug.Trace("TimeStampChecker", "AddFileInternal: New path (" + path + ")"); } } internal static bool CheckFilesStillValid(string key, ICollection virtualPaths) { if (virtualPaths == null) return true; return Current.CheckFilesStillValidInternal(key, virtualPaths); } private bool CheckFilesStillValidInternal(string key, ICollection virtualPaths) { Debug.Trace("TimeStampChecker", "CheckFilesStillValidInternal (" + key + ")"); foreach (string virtualPath in virtualPaths) { if (!_timeStamps.Contains(virtualPath)) continue; string path = HostingEnvironment.MapPath(virtualPath); DateTime lastWriteTimeUtc = File.GetLastWriteTimeUtc(path); DateTime storedValue = (DateTime)_timeStamps[virtualPath]; // If it changed, then it's not valid if (lastWriteTimeUtc != storedValue) { Debug.Trace("TimeStampChecker", "CheckFilesStillValidInternal: File (" + path + ") has changed!"); return false; } } Debug.Trace("TimeStampChecker", "CheckFilesStillValidInternal (" + key + ") is still valid"); return 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
- Reference.cs
- Point3DIndependentAnimationStorage.cs
- InputDevice.cs
- ConditionalAttribute.cs
- LinqDataSourceHelper.cs
- AllMembershipCondition.cs
- userdatakeys.cs
- SamlAssertionKeyIdentifierClause.cs
- ConfigUtil.cs
- ListViewDeletedEventArgs.cs
- JsonObjectDataContract.cs
- HelpKeywordAttribute.cs
- ExtendedTransformFactory.cs
- Double.cs
- ChunkedMemoryStream.cs
- Interop.cs
- RealProxy.cs
- MexServiceChannelBuilder.cs
- XmlAnyElementAttributes.cs
- OutputCacheSettingsSection.cs
- Query.cs
- CanonicalXml.cs
- MissingManifestResourceException.cs
- PreservationFileWriter.cs
- AuthorizationRule.cs
- ObfuscationAttribute.cs
- ClaimTypeElement.cs
- RawStylusSystemGestureInputReport.cs
- ResourceDisplayNameAttribute.cs
- FixedSOMPageConstructor.cs
- Timer.cs
- mediaeventargs.cs
- Itemizer.cs
- OpenTypeCommon.cs
- _FtpControlStream.cs
- WebPartDescription.cs
- DispatcherExceptionFilterEventArgs.cs
- GetRecipientRequest.cs
- InputScopeAttribute.cs
- TextChangedEventArgs.cs
- Validator.cs
- WebPartZoneBase.cs
- CollectionViewSource.cs
- LinearQuaternionKeyFrame.cs
- Fault.cs
- DesignerCapabilities.cs
- ContractMethodInfo.cs
- StringUtil.cs
- DataKey.cs
- MSAAEventDispatcher.cs
- ControlIdConverter.cs
- JpegBitmapDecoder.cs
- QueuedDeliveryRequirementsMode.cs
- Message.cs
- LineProperties.cs
- JsonEnumDataContract.cs
- OutputWindow.cs
- JsonUriDataContract.cs
- Pens.cs
- ByteStorage.cs
- TextEditorSpelling.cs
- SystemException.cs
- RequestCachePolicyConverter.cs
- LocalizationComments.cs
- NavigationEventArgs.cs
- ValueSerializerAttribute.cs
- URLMembershipCondition.cs
- EqualityComparer.cs
- Converter.cs
- PointCollectionConverter.cs
- ReadOnlyDataSource.cs
- Console.cs
- ClientOptions.cs
- DiscoveryOperationContextExtension.cs
- AssemblyBuilder.cs
- StateMachineHelpers.cs
- SByteConverter.cs
- UnsafeNativeMethods.cs
- TreeWalkHelper.cs
- CellPartitioner.cs
- DesignerMetadata.cs
- ManagementClass.cs
- ExcCanonicalXml.cs
- SynchronousChannelMergeEnumerator.cs
- BackgroundWorker.cs
- BuilderInfo.cs
- OptimisticConcurrencyException.cs
- TraceContextEventArgs.cs
- Pair.cs
- _BufferOffsetSize.cs
- GCHandleCookieTable.cs
- Timer.cs
- ArithmeticException.cs
- COM2PropertyBuilderUITypeEditor.cs
- DateTimeHelper.cs
- SingleObjectCollection.cs
- SafeHandle.cs
- GridViewUpdateEventArgs.cs
- BorderGapMaskConverter.cs
- Size.cs