Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / BCL / System / IO / UnmanagedMemoryStreamWrapper.cs / 1305376 / UnmanagedMemoryStreamWrapper.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== /*============================================================ ** ** Class: UnmanagedMemoryStreamWrapper ** **[....] ** ** Purpose: Create a Memorystream over an UnmanagedMemoryStream ** ===========================================================*/ using System; using System.Runtime.InteropServices; using System.Security.Permissions; using System.Diagnostics.Contracts; namespace System.IO { // Needed for backwards compatibility with V1.x usages of the // ResourceManager, where a MemoryStream is now returned as an // UnmanagedMemoryStream from ResourceReader. internal sealed class UnmanagedMemoryStreamWrapper : MemoryStream { private UnmanagedMemoryStream _unmanagedStream; internal UnmanagedMemoryStreamWrapper(UnmanagedMemoryStream stream) { _unmanagedStream = stream; } public override bool CanRead { [Pure] get { return _unmanagedStream.CanRead; } } public override bool CanSeek { [Pure] get { return _unmanagedStream.CanSeek; } } public override bool CanWrite { [Pure] get { return _unmanagedStream.CanWrite; } } protected override void Dispose(bool disposing) { try { if (disposing) _unmanagedStream.Close(); } finally { base.Dispose(disposing); } } public override void Flush() { _unmanagedStream.Flush(); } public override byte[] GetBuffer() { throw new UnauthorizedAccessException(Environment.GetResourceString("UnauthorizedAccess_MemStreamBuffer")); } public override int Capacity { get { return (int) _unmanagedStream.Capacity; } set { throw new IOException(Environment.GetResourceString("IO.IO_FixedCapacity")); } } public override long Length { get { return _unmanagedStream.Length; } } public override long Position { get { return _unmanagedStream.Position; } set { _unmanagedStream.Position = value; } } public override int Read([In, Out] byte[] buffer, int offset, int count) { return _unmanagedStream.Read(buffer, offset, count); } public override int ReadByte() { return _unmanagedStream.ReadByte(); } public override long Seek(long offset, SeekOrigin loc) { return _unmanagedStream.Seek(offset, loc); } [System.Security.SecuritySafeCritical] // auto-generated public unsafe override byte[] ToArray() { if (!_unmanagedStream._isOpen) __Error.StreamIsClosed(); if (!_unmanagedStream.CanRead) __Error.ReadNotSupported(); byte[] buffer = new byte[_unmanagedStream.Length]; Buffer.memcpy(_unmanagedStream.Pointer, 0, buffer, 0, (int) _unmanagedStream.Length); return buffer; } public override void Write(byte[] buffer, int offset, int count) { _unmanagedStream.Write(buffer, offset, count); } public override void WriteByte(byte value) { _unmanagedStream.WriteByte(value); } // Writes this MemoryStream to another stream. public unsafe override void WriteTo(Stream stream) { if (stream==null) throw new ArgumentNullException("stream", Environment.GetResourceString("ArgumentNull_Stream")); Contract.EndContractBlock(); if (!_unmanagedStream._isOpen) __Error.StreamIsClosed(); if (!CanRead) __Error.ReadNotSupported(); byte[] buffer = ToArray(); stream.Write(buffer, 0, buffer.Length); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== /*============================================================ ** ** Class: UnmanagedMemoryStreamWrapper ** **[....] ** ** Purpose: Create a Memorystream over an UnmanagedMemoryStream ** ===========================================================*/ using System; using System.Runtime.InteropServices; using System.Security.Permissions; using System.Diagnostics.Contracts; namespace System.IO { // Needed for backwards compatibility with V1.x usages of the // ResourceManager, where a MemoryStream is now returned as an // UnmanagedMemoryStream from ResourceReader. internal sealed class UnmanagedMemoryStreamWrapper : MemoryStream { private UnmanagedMemoryStream _unmanagedStream; internal UnmanagedMemoryStreamWrapper(UnmanagedMemoryStream stream) { _unmanagedStream = stream; } public override bool CanRead { [Pure] get { return _unmanagedStream.CanRead; } } public override bool CanSeek { [Pure] get { return _unmanagedStream.CanSeek; } } public override bool CanWrite { [Pure] get { return _unmanagedStream.CanWrite; } } protected override void Dispose(bool disposing) { try { if (disposing) _unmanagedStream.Close(); } finally { base.Dispose(disposing); } } public override void Flush() { _unmanagedStream.Flush(); } public override byte[] GetBuffer() { throw new UnauthorizedAccessException(Environment.GetResourceString("UnauthorizedAccess_MemStreamBuffer")); } public override int Capacity { get { return (int) _unmanagedStream.Capacity; } set { throw new IOException(Environment.GetResourceString("IO.IO_FixedCapacity")); } } public override long Length { get { return _unmanagedStream.Length; } } public override long Position { get { return _unmanagedStream.Position; } set { _unmanagedStream.Position = value; } } public override int Read([In, Out] byte[] buffer, int offset, int count) { return _unmanagedStream.Read(buffer, offset, count); } public override int ReadByte() { return _unmanagedStream.ReadByte(); } public override long Seek(long offset, SeekOrigin loc) { return _unmanagedStream.Seek(offset, loc); } [System.Security.SecuritySafeCritical] // auto-generated public unsafe override byte[] ToArray() { if (!_unmanagedStream._isOpen) __Error.StreamIsClosed(); if (!_unmanagedStream.CanRead) __Error.ReadNotSupported(); byte[] buffer = new byte[_unmanagedStream.Length]; Buffer.memcpy(_unmanagedStream.Pointer, 0, buffer, 0, (int) _unmanagedStream.Length); return buffer; } public override void Write(byte[] buffer, int offset, int count) { _unmanagedStream.Write(buffer, offset, count); } public override void WriteByte(byte value) { _unmanagedStream.WriteByte(value); } // Writes this MemoryStream to another stream. public unsafe override void WriteTo(Stream stream) { if (stream==null) throw new ArgumentNullException("stream", Environment.GetResourceString("ArgumentNull_Stream")); Contract.EndContractBlock(); if (!_unmanagedStream._isOpen) __Error.StreamIsClosed(); if (!CanRead) __Error.ReadNotSupported(); byte[] buffer = ToArray(); stream.Write(buffer, 0, buffer.Length); } } } // 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
- MetabaseServerConfig.cs
- ListView.cs
- BaseDataBoundControl.cs
- StylesEditorDialog.cs
- RealizationDrawingContextWalker.cs
- ValidationRule.cs
- SortedSetDebugView.cs
- BitmapCacheBrush.cs
- BlurBitmapEffect.cs
- SplitterPanel.cs
- PrinterUnitConvert.cs
- baseaxisquery.cs
- BinaryEditor.cs
- LogEntrySerialization.cs
- RegistryExceptionHelper.cs
- DictionaryEntry.cs
- NameScopePropertyAttribute.cs
- InputLanguageManager.cs
- SafeProcessHandle.cs
- SynchronizingStream.cs
- VectorValueSerializer.cs
- CrossAppDomainChannel.cs
- Literal.cs
- SizeFConverter.cs
- UTF7Encoding.cs
- WindowClosedEventArgs.cs
- RegexGroupCollection.cs
- ValidationErrorInfo.cs
- BaseServiceProvider.cs
- JumpItem.cs
- Model3DGroup.cs
- AuthenticateEventArgs.cs
- ExpressionNode.cs
- JsonEncodingStreamWrapper.cs
- RtfControls.cs
- _SSPISessionCache.cs
- TrackingParameters.cs
- PseudoWebRequest.cs
- KeyTimeConverter.cs
- TwoPhaseCommit.cs
- AsymmetricAlgorithm.cs
- VirtualizingStackPanel.cs
- EventLogStatus.cs
- Cursors.cs
- ScriptServiceAttribute.cs
- CultureTable.cs
- FormsAuthentication.cs
- HandleRef.cs
- HttpResponseHeader.cs
- DataException.cs
- FeatureSupport.cs
- WebPartTransformer.cs
- X509AsymmetricSecurityKey.cs
- Utils.cs
- DataBindingCollectionConverter.cs
- RichTextBoxContextMenu.cs
- DataExpression.cs
- SymbolEqualComparer.cs
- XmlObjectSerializerReadContextComplex.cs
- GridViewColumn.cs
- TcpSocketManager.cs
- FeatureManager.cs
- WebPartZoneBase.cs
- EdmItemCollection.cs
- EventlogProvider.cs
- UnsafeNetInfoNativeMethods.cs
- XPathAxisIterator.cs
- HtmlProps.cs
- ArglessEventHandlerProxy.cs
- InlinedAggregationOperatorEnumerator.cs
- SafeEventLogReadHandle.cs
- TemplatedAdorner.cs
- HttpCachePolicy.cs
- PtsHost.cs
- XmlSchemaAppInfo.cs
- SettingsPropertyNotFoundException.cs
- XmlNodeChangedEventArgs.cs
- Double.cs
- SymLanguageVendor.cs
- RoutedEventConverter.cs
- GroupBox.cs
- CompilerScopeManager.cs
- VsPropertyGrid.cs
- HtmlUtf8RawTextWriter.cs
- TimeoutException.cs
- CodeCastExpression.cs
- _HelperAsyncResults.cs
- ZipIOLocalFileHeader.cs
- Parameter.cs
- AssertSection.cs
- UnsafeNativeMethods.cs
- TextRunCache.cs
- RedirectionProxy.cs
- XmlSchemaValidator.cs
- CatalogZoneAutoFormat.cs
- PeerResolverMode.cs
- DBConnectionString.cs
- StatusBarPanelClickEvent.cs
- OracleTimeSpan.cs
- RulePatternOps.cs