Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / Net / System / Net / Sockets / _TransmitFileOverlappedAsyncResult.cs / 1 / _TransmitFileOverlappedAsyncResult.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Net.Sockets { using System; using System.Net; using System.IO; using System.Runtime.InteropServices; using System.Threading; using Microsoft.Win32; // // OverlappedAsyncResult - used to take care of storage for async Socket operation // from the BeginSend, BeginSendTo, BeginReceive, BeginReceiveFrom calls. // internal class TransmitFileOverlappedAsyncResult : BaseOverlappedAsyncResult { // // internal class members // private FileStream m_fileStream; private TransmitFileOptions m_flags; private TransmitFileBuffers m_buffers; // Constructor. We take in the socket that's creating us, the caller's // state object, and the buffer on which the I/O will be performed. // We save the socket and state, pin the callers's buffer, and allocate // an event for the WaitHandle. // internal TransmitFileOverlappedAsyncResult(Socket socket, Object asyncState, AsyncCallback asyncCallback) : base(socket, asyncState, asyncCallback) { } internal TransmitFileOverlappedAsyncResult(Socket socket):base(socket){ } // // SetUnmanagedStructures - // Fills in Overlapped Structures used in an Async Overlapped Winsock call // these calls are outside the runtime and are unmanaged code, so we need // to prepare specific structures and ints that lie in unmanaged memory // since the Overlapped calls can be Async // internal void SetUnmanagedStructures(byte[] preBuffer, byte[] postBuffer, FileStream fileStream, TransmitFileOptions flags, bool [....]) { // // fill in flags if we use it. // m_fileStream = fileStream; m_flags = flags; // // Fill in Buffer Array structure that will be used for our send/recv Buffer // m_buffers = null; int buffsNumber = 0; if (preBuffer != null && preBuffer.Length>0) ++buffsNumber; if (postBuffer != null && postBuffer.Length>0) ++buffsNumber; object[] objectsToPin = null; if (buffsNumber != 0) { ++buffsNumber; objectsToPin = new object[buffsNumber]; m_buffers = new TransmitFileBuffers(); objectsToPin[--buffsNumber] = m_buffers; if (preBuffer != null && preBuffer.Length>0) { m_buffers.preBufferLength = preBuffer.Length; objectsToPin[--buffsNumber] = preBuffer; } if (postBuffer != null && postBuffer.Length>0) { m_buffers.postBufferLength = postBuffer.Length; objectsToPin[--buffsNumber] = postBuffer; } if ([....]) { base.PinUnmanagedObjects(objectsToPin); } else { base.SetUnmanagedStructures(objectsToPin); } if (preBuffer != null && preBuffer.Length > 0) { m_buffers.preBuffer = Marshal.UnsafeAddrOfPinnedArrayElement(preBuffer, 0); } if (postBuffer != null && postBuffer.Length > 0) { m_buffers.postBuffer = Marshal.UnsafeAddrOfPinnedArrayElement(postBuffer, 0); } } else if (![....]) { base.SetUnmanagedStructures(null); } } // SetUnmanagedStructures() internal void SetUnmanagedStructures(byte[] preBuffer, byte[] postBuffer, FileStream fileStream, TransmitFileOptions flags, ref OverlappedCache overlappedCache) { SetupCache(ref overlappedCache); SetUnmanagedStructures(preBuffer, postBuffer, fileStream, flags, false); } // Utility cleanup routine. Frees pinned and unmanged memory. // protected override void ForceReleaseUnmanagedStructures() { if (m_fileStream != null ) { m_fileStream.Close(); m_fileStream = null; } // // clenaup base class // base.ForceReleaseUnmanagedStructures(); } // CleanupUnmanagedStructures() internal void SyncReleaseUnmanagedStructures() { ForceReleaseUnmanagedStructures(); } internal TransmitFileBuffers TransmitFileBuffers{ get{ return m_buffers; } } internal TransmitFileOptions Flags{ get{ return m_flags; } } }; // class OverlappedAsyncResult } // namespace System.Net.Sockets // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Net.Sockets { using System; using System.Net; using System.IO; using System.Runtime.InteropServices; using System.Threading; using Microsoft.Win32; // // OverlappedAsyncResult - used to take care of storage for async Socket operation // from the BeginSend, BeginSendTo, BeginReceive, BeginReceiveFrom calls. // internal class TransmitFileOverlappedAsyncResult : BaseOverlappedAsyncResult { // // internal class members // private FileStream m_fileStream; private TransmitFileOptions m_flags; private TransmitFileBuffers m_buffers; // Constructor. We take in the socket that's creating us, the caller's // state object, and the buffer on which the I/O will be performed. // We save the socket and state, pin the callers's buffer, and allocate // an event for the WaitHandle. // internal TransmitFileOverlappedAsyncResult(Socket socket, Object asyncState, AsyncCallback asyncCallback) : base(socket, asyncState, asyncCallback) { } internal TransmitFileOverlappedAsyncResult(Socket socket):base(socket){ } // // SetUnmanagedStructures - // Fills in Overlapped Structures used in an Async Overlapped Winsock call // these calls are outside the runtime and are unmanaged code, so we need // to prepare specific structures and ints that lie in unmanaged memory // since the Overlapped calls can be Async // internal void SetUnmanagedStructures(byte[] preBuffer, byte[] postBuffer, FileStream fileStream, TransmitFileOptions flags, bool [....]) { // // fill in flags if we use it. // m_fileStream = fileStream; m_flags = flags; // // Fill in Buffer Array structure that will be used for our send/recv Buffer // m_buffers = null; int buffsNumber = 0; if (preBuffer != null && preBuffer.Length>0) ++buffsNumber; if (postBuffer != null && postBuffer.Length>0) ++buffsNumber; object[] objectsToPin = null; if (buffsNumber != 0) { ++buffsNumber; objectsToPin = new object[buffsNumber]; m_buffers = new TransmitFileBuffers(); objectsToPin[--buffsNumber] = m_buffers; if (preBuffer != null && preBuffer.Length>0) { m_buffers.preBufferLength = preBuffer.Length; objectsToPin[--buffsNumber] = preBuffer; } if (postBuffer != null && postBuffer.Length>0) { m_buffers.postBufferLength = postBuffer.Length; objectsToPin[--buffsNumber] = postBuffer; } if ([....]) { base.PinUnmanagedObjects(objectsToPin); } else { base.SetUnmanagedStructures(objectsToPin); } if (preBuffer != null && preBuffer.Length > 0) { m_buffers.preBuffer = Marshal.UnsafeAddrOfPinnedArrayElement(preBuffer, 0); } if (postBuffer != null && postBuffer.Length > 0) { m_buffers.postBuffer = Marshal.UnsafeAddrOfPinnedArrayElement(postBuffer, 0); } } else if (![....]) { base.SetUnmanagedStructures(null); } } // SetUnmanagedStructures() internal void SetUnmanagedStructures(byte[] preBuffer, byte[] postBuffer, FileStream fileStream, TransmitFileOptions flags, ref OverlappedCache overlappedCache) { SetupCache(ref overlappedCache); SetUnmanagedStructures(preBuffer, postBuffer, fileStream, flags, false); } // Utility cleanup routine. Frees pinned and unmanged memory. // protected override void ForceReleaseUnmanagedStructures() { if (m_fileStream != null ) { m_fileStream.Close(); m_fileStream = null; } // // clenaup base class // base.ForceReleaseUnmanagedStructures(); } // CleanupUnmanagedStructures() internal void SyncReleaseUnmanagedStructures() { ForceReleaseUnmanagedStructures(); } internal TransmitFileBuffers TransmitFileBuffers{ get{ return m_buffers; } } internal TransmitFileOptions Flags{ get{ return m_flags; } } }; // class OverlappedAsyncResult } // namespace System.Net.Sockets // 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
- Pool.cs
- CodeAccessPermission.cs
- LoginCancelEventArgs.cs
- PointLight.cs
- HostingEnvironmentSection.cs
- SvcMapFile.cs
- OracleParameterBinding.cs
- SqlCommand.cs
- FrameworkReadOnlyPropertyMetadata.cs
- CurrencyManager.cs
- RemotingException.cs
- CodeEntryPointMethod.cs
- ScriptResourceHandler.cs
- Logging.cs
- WithStatement.cs
- CellQuery.cs
- XPathParser.cs
- _HTTPDateParse.cs
- CodeCompileUnit.cs
- InArgumentConverter.cs
- TextTreeText.cs
- LocatorManager.cs
- DecimalMinMaxAggregationOperator.cs
- SqlDataSourceView.cs
- LineBreak.cs
- WebPart.cs
- UnsafeNativeMethods.cs
- GeneratedCodeAttribute.cs
- UdpSocketReceiveManager.cs
- XmlLinkedNode.cs
- AngleUtil.cs
- UnsafeNativeMethodsTablet.cs
- XmlReflectionImporter.cs
- DebugControllerThread.cs
- DesignerVerb.cs
- EtwProvider.cs
- TCEAdapterGenerator.cs
- TransformationRules.cs
- XPathNavigator.cs
- Button.cs
- XamlFilter.cs
- ProfileSettingsCollection.cs
- EventEntry.cs
- KnownTypesProvider.cs
- ComplexBindingPropertiesAttribute.cs
- PropertyToken.cs
- FixedDocumentPaginator.cs
- ImpersonateTokenRef.cs
- ElementHostPropertyMap.cs
- CompareValidator.cs
- IHttpResponseInternal.cs
- SymbolTable.cs
- RoleManagerSection.cs
- SecUtil.cs
- SerializationHelper.cs
- ResetableIterator.cs
- DataGridViewRowEventArgs.cs
- ComponentEditorPage.cs
- CodeDirectoryCompiler.cs
- SerializableAuthorizationContext.cs
- RIPEMD160Managed.cs
- CommunicationObjectManager.cs
- DbProviderServices.cs
- Vector3DCollection.cs
- EnumerableWrapperWeakToStrong.cs
- serverconfig.cs
- Matrix3D.cs
- DataBoundLiteralControl.cs
- PropertyGrid.cs
- DateTimeFormat.cs
- CreateUserErrorEventArgs.cs
- PropertyGridCommands.cs
- SortDescriptionCollection.cs
- XmlUtilWriter.cs
- DefaultValueConverter.cs
- RoleExceptions.cs
- TextMarkerSource.cs
- ErrorLog.cs
- MaterializeFromAtom.cs
- ConfigUtil.cs
- DynamicAttribute.cs
- ICollection.cs
- TransactionChannel.cs
- XamlSerializationHelper.cs
- XhtmlConformanceSection.cs
- OracleConnection.cs
- Debug.cs
- Size.cs
- DataControlCommands.cs
- GregorianCalendarHelper.cs
- InternalCache.cs
- Rule.cs
- ReadOnlyObservableCollection.cs
- _SslStream.cs
- HttpBrowserCapabilitiesWrapper.cs
- Int32AnimationBase.cs
- loginstatus.cs
- KeyFrames.cs
- ComponentManagerBroker.cs
- LateBoundBitmapDecoder.cs