Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / Globalization / GlobalizationAssembly.cs / 2 / GlobalizationAssembly.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== namespace System.Globalization { using System; using System.Reflection; using System.Collections; using System.Threading; using System.Runtime.CompilerServices; using System.Runtime.ConstrainedExecution; using System.IO; /*=================================GlobalizationAssembly========================== ** ** This class manages the assemblies used in the NLS+ classes. ** Assembly contains the data tables used by NLS+ classes. An aseembly will carry a version ** of all the NLS+ data tables. The default assembly is provided by ** Assembly.GetAssembly(typeof(GlobalizationAssembly)). ** ** We use assembly to support versioning of NLS+ data tables. Take CompareInfo for example. ** In CompareInfo.GetCompareInfo(int culture, Assembly), ** you can pass an assembly which contains the different NLS+ data tables. By doing this, the constructed CompareInfo ** will read the sorting tables from the specified Assembly, instead of from the default assembly shipped with the runtime. ** ** For every assembly used, we will create one corresponding GlobalizationAssembly. ** Within the GlobalizationAssembly, we will hold the following information: ** 1. the 32-bit pointer value pointing to the corresponding native C++ NativeGlobalizationAssembly object for it. This pointer ** is needed when we create SortingTable. See CompareInfo ctor for an example. ** 2. the caches for different type of objects. For instances, we will have caches for CompareInfo, CultureInfo, RegionInfo, etc. ** The idea is to create one instance of CompareInfo for a specific culture. ** ** For only, only CompareInfo versioning is supported. However, this class can be expanded to support the versioning of ** CultureInfo, RegionInfo, etc. ** ============================================================================*/ internal sealed class GlobalizationAssembly { // ---------------------------------------------------------------------------------------------------- // // Static data members and static methods. // // --------------------------------------------------------------------------------------------------- // // Hash to store Globalization assembly. // private static Hashtable m_assemblyHash = new Hashtable(4); // // The pointer to the default C++ native NativeGlobalizationAssembly object for the class library. // We use default native NativeGlobalizationAssembly to access NLS+ data table shipped with the runtime. // // Classes like CompareInfo will access this data member directly when the default assembly is used. // internal static GlobalizationAssembly m_defaultInstance = GetGlobalizationAssembly(Assembly.GetAssembly(typeof(GlobalizationAssembly))); internal static GlobalizationAssembly DefaultInstance { // // In case the GlobalizationAssembly class failed during the type initilaization then we'll have m_defaultInstance = null. // to be reliable we throw exception instead of getting access violation. // get { if (m_defaultInstance == null) throw new TypeLoadException(CultureTable.TypeLoadExceptionMessage); return m_defaultInstance; } } /*=================================GetGlobalizationAssembly========================== **Action: Return the GlobalizationAssembly instance for the specified assembly. ** Every assembly should have one and only one instance of GlobalizationAssembly. **Returns: An instance of GlobalizationAssembly. **Arguments: **Exceptions: ============================================================================*/ internal static GlobalizationAssembly GetGlobalizationAssembly(Assembly assembly) { GlobalizationAssembly ga; if ((ga = (GlobalizationAssembly)m_assemblyHash[assembly]) == null) { // This is intentionally taking a process-global lock on an // internal Type, using ExecuteCodeWithLock to guarantee we // release the lock in a stack overflow safe way. RuntimeHelpers.TryCode createGlobalizationAssem = new RuntimeHelpers.TryCode(CreateGlobalizationAssembly); RuntimeHelpers.ExecuteCodeWithLock(typeof(CultureTableRecord), createGlobalizationAssem, assembly); ga = (GlobalizationAssembly)m_assemblyHash[assembly]; } BCLDebug.Assert(ga != null, "GlobalizationAssembly was not created"); return (ga); } [PrePrepareMethod] private unsafe static void CreateGlobalizationAssembly(object assem) { GlobalizationAssembly ga; Assembly assembly = (Assembly) assem; if ((ga = (GlobalizationAssembly)m_assemblyHash[assembly]) == null) { // This assembly is not used before, create a corresponding native NativeGlobalizationAssembly object for it. ga = new GlobalizationAssembly(); ga.pNativeGlobalizationAssembly = nativeCreateGlobalizationAssembly(assembly); System.Threading.Thread.MemoryBarrier(); m_assemblyHash[assembly] = ga; } } // This method requires synchonization because class global data member is used // in the native side. [MethodImplAttribute(MethodImplOptions.InternalCall)] private unsafe static extern void* _nativeCreateGlobalizationAssembly(Assembly assembly); private unsafe static void* nativeCreateGlobalizationAssembly(Assembly assembly) { return _nativeCreateGlobalizationAssembly(assembly.InternalAssembly); } // --------------------------------------------------------------------------------------------------- // // Instance data members and instance methods. // // --------------------------------------------------------------------------------------------------- // This is the cache to store CompareInfo for a particular culture. // The key is culture, and the content is an instance of CompareInfo. internal Hashtable compareInfoCache; // We will have more caches here for CultureInfo, RegionInfo, etc. if we want to versioning in // these classes. // The pointer to C++ native NativeGlobalizationAssembly unsafe internal void* pNativeGlobalizationAssembly; internal GlobalizationAssembly() { // Create cache for CompareInfo instances. compareInfoCache = new Hashtable(4); } internal unsafe static byte* GetGlobalizationResourceBytePtr(Assembly assembly, String tableName) { BCLDebug.Assert(assembly != null, "assembly can not be null. This should be generally the mscorlib.dll assembly."); BCLDebug.Assert(tableName != null, "table name can not be null"); Stream stream = assembly.GetManifestResourceStream(tableName); UnmanagedMemoryStream bytesStream = stream as UnmanagedMemoryStream; if (bytesStream != null) { byte* bytes = bytesStream.PositionPointer; if (bytes != null) { return (bytes); } } BCLDebug.Assert( false, String.Format( CultureInfo.CurrentCulture, "Didn't get the resource table {0} for System.Globalization from {1}", tableName, assembly)); // We can not continue if we can't get the resource. throw new ExecutionEngineException(); } } }
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- WebEvents.cs
- ContentType.cs
- LinqDataView.cs
- ZipIOCentralDirectoryFileHeader.cs
- HwndSubclass.cs
- AppDomainAttributes.cs
- COMException.cs
- WindowsListView.cs
- OleDbConnectionPoolGroupProviderInfo.cs
- WindowInteractionStateTracker.cs
- PerformanceCounterCategory.cs
- SvcFileManager.cs
- ZipPackage.cs
- BaseParagraph.cs
- StatusBarItem.cs
- ItemCollection.cs
- BStrWrapper.cs
- ConfigurationStrings.cs
- MimeFormReflector.cs
- OleDbParameter.cs
- WinEventHandler.cs
- BinHexDecoder.cs
- TextChangedEventArgs.cs
- ThemeDirectoryCompiler.cs
- SqlNodeAnnotations.cs
- RelatedPropertyManager.cs
- DBDataPermission.cs
- xmlglyphRunInfo.cs
- FixedPosition.cs
- IncrementalReadDecoders.cs
- PiiTraceSource.cs
- UInt16.cs
- FormsAuthenticationUser.cs
- MenuItemCollection.cs
- UdpTransportBindingElement.cs
- ZipPackagePart.cs
- FigureParagraph.cs
- MessageQueueAccessControlEntry.cs
- TreeNodeEventArgs.cs
- VisualState.cs
- Label.cs
- SiteMapDataSource.cs
- CriticalHandle.cs
- TransformGroup.cs
- GenerateHelper.cs
- UnmanagedMarshal.cs
- MatrixStack.cs
- OleDbRowUpdatedEvent.cs
- httpapplicationstate.cs
- ResourceProviderFactory.cs
- FloatUtil.cs
- TimerTable.cs
- HitTestWithPointDrawingContextWalker.cs
- COM2IVsPerPropertyBrowsingHandler.cs
- ParenthesizePropertyNameAttribute.cs
- CacheEntry.cs
- DefaultExpressionVisitor.cs
- DBConnection.cs
- Comparer.cs
- EngineSiteSapi.cs
- CheckBox.cs
- BitmapImage.cs
- TypeInfo.cs
- ModelFunction.cs
- Substitution.cs
- ToolbarAUtomationPeer.cs
- CoreSwitches.cs
- DefaultBindingPropertyAttribute.cs
- PerfCounters.cs
- GifBitmapDecoder.cs
- FunctionImportElement.cs
- HtmlContainerControl.cs
- _LazyAsyncResult.cs
- ThemeDirectoryCompiler.cs
- FontFaceLayoutInfo.cs
- NamespaceList.cs
- DynamicPropertyHolder.cs
- HyperLinkField.cs
- DataMemberAttribute.cs
- CAGDesigner.cs
- ObservableCollection.cs
- BuilderElements.cs
- GridViewRow.cs
- sqlser.cs
- StoreItemCollection.Loader.cs
- MonthChangedEventArgs.cs
- StreamGeometryContext.cs
- TransformGroup.cs
- Rijndael.cs
- Rotation3DAnimationBase.cs
- FrameworkRichTextComposition.cs
- SmtpNetworkElement.cs
- EdmProviderManifest.cs
- RSACryptoServiceProvider.cs
- InfiniteIntConverter.cs
- CurrentChangedEventManager.cs
- Win32PrintDialog.cs
- HttpListener.cs
- StructuredTypeInfo.cs
- UnsafeNetInfoNativeMethods.cs