Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Net / System / Net / Sockets / _OverlappedAsyncResult.cs / 1305376 / _OverlappedAsyncResult.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Net.Sockets { using System; using System.Net; using System.Runtime.InteropServices; using System.Threading; using Microsoft.Win32; using System.Collections.Generic; // // OverlappedAsyncResult - used to take care of storage for async Socket operation // from the BeginSend, BeginSendTo, BeginReceive, BeginReceiveFrom calls. // internal class OverlappedAsyncResult: BaseOverlappedAsyncResult { // // internal class members // private SocketAddress m_SocketAddress; private SocketAddress m_SocketAddressOriginal; // needed for partial BeginReceiveFrom/EndReceiveFrom completion // These two are used only as alternatives internal WSABuffer m_SingleBuffer; internal WSABuffer[] m_WSABuffers; // // the following two will be used only on WinNT to enable completion ports // // // 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 OverlappedAsyncResult(Socket socket, Object asyncState, AsyncCallback asyncCallback) : base(socket, asyncState, asyncCallback) { } // internal IntPtr GetSocketAddressPtr() { return Marshal.UnsafeAddrOfPinnedArrayElement(m_SocketAddress.m_Buffer, 0); } // internal IntPtr GetSocketAddressSizePtr() { return Marshal.UnsafeAddrOfPinnedArrayElement(m_SocketAddress.m_Buffer, m_SocketAddress.GetAddressSizeOffset()); } // internal SocketAddress SocketAddress { get { return m_SocketAddress; } } // internal SocketAddress SocketAddressOriginal { get { return m_SocketAddressOriginal; } set { m_SocketAddressOriginal = value; } } // // 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[] buffer, int offset, int size, SocketAddress socketAddress, bool pinSocketAddress) { // // Fill in Buffer Array structure that will be used for our send/recv Buffer // m_SocketAddress = socketAddress; if (pinSocketAddress && m_SocketAddress != null) { object[] objectsToPin = null; objectsToPin = new object[2]; objectsToPin[0] = buffer; m_SocketAddress.CopyAddressSizeIntoBuffer(); objectsToPin[1] = m_SocketAddress.m_Buffer; base.SetUnmanagedStructures(objectsToPin); } else { base.SetUnmanagedStructures(buffer); } m_SingleBuffer.Length = size; m_SingleBuffer.Pointer = Marshal.UnsafeAddrOfPinnedArrayElement(buffer, offset); } internal void SetUnmanagedStructures(byte[] buffer, int offset, int size, SocketAddress socketAddress, bool pinSocketAddress, ref OverlappedCache overlappedCache) { SetupCache(ref overlappedCache); SetUnmanagedStructures(buffer, offset, size, socketAddress, pinSocketAddress); } internal void SetUnmanagedStructures(BufferOffsetSize[] buffers) { // // Fill in Buffer Array structure that will be used for our send/recv Buffer // m_WSABuffers = new WSABuffer[buffers.Length]; object[] objectsToPin = new object[buffers.Length]; for (int i = 0; i < buffers.Length; i++) objectsToPin[i] = buffers[i].Buffer; // has to be called now to pin memory base.SetUnmanagedStructures(objectsToPin); for (int i = 0; i < buffers.Length; i++) { m_WSABuffers[i].Length = buffers[i].Size; m_WSABuffers[i].Pointer = Marshal.UnsafeAddrOfPinnedArrayElement(buffers[i].Buffer, buffers[i].Offset); } } internal void SetUnmanagedStructures(BufferOffsetSize[] buffers, ref OverlappedCache overlappedCache) { SetupCache(ref overlappedCache); SetUnmanagedStructures(buffers); } internal void SetUnmanagedStructures(IList> buffers) { // Fill in Buffer Array structure that will be used for our send/recv Buffer // //make sure we don't let the app mess up the buffer array enough to cause //corruption. int count = buffers.Count; ArraySegment [] buffersCopy = new ArraySegment [count]; for (int i=0;i > buffers, ref OverlappedCache overlappedCache) { SetupCache(ref overlappedCache); SetUnmanagedStructures(buffers); } // // This method is called after an asynchronous call is made for the user, // it checks and acts accordingly if the IO: // 1) completed synchronously. // 2) was pended. // 3) failed. // internal override object PostCompletion(int numBytes) { if (ErrorCode == 0) { if(Logging.On)LogBuffer(numBytes); } return (int)numBytes; } void LogBuffer(int size) { GlobalLog.Assert(Logging.On, "OverlappedAsyncResult#{0}::LogBuffer()|Logging is off!", ValidationHelper.HashString(this)); if (size > -1) { if (m_WSABuffers != null) { foreach (WSABuffer wsaBuffer in m_WSABuffers) { Logging.Dump(Logging.Sockets, AsyncObject, "PostCompletion", wsaBuffer.Pointer, Math.Min(wsaBuffer.Length, size)); if ((size -= wsaBuffer.Length) <=0) break; } } else { Logging.Dump(Logging.Sockets, AsyncObject, "PostCompletion", m_SingleBuffer.Pointer, Math.Min(m_SingleBuffer.Length, size)); } } } }; // 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.Runtime.InteropServices; using System.Threading; using Microsoft.Win32; using System.Collections.Generic; // // OverlappedAsyncResult - used to take care of storage for async Socket operation // from the BeginSend, BeginSendTo, BeginReceive, BeginReceiveFrom calls. // internal class OverlappedAsyncResult: BaseOverlappedAsyncResult { // // internal class members // private SocketAddress m_SocketAddress; private SocketAddress m_SocketAddressOriginal; // needed for partial BeginReceiveFrom/EndReceiveFrom completion // These two are used only as alternatives internal WSABuffer m_SingleBuffer; internal WSABuffer[] m_WSABuffers; // // the following two will be used only on WinNT to enable completion ports // // // 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 OverlappedAsyncResult(Socket socket, Object asyncState, AsyncCallback asyncCallback) : base(socket, asyncState, asyncCallback) { } // internal IntPtr GetSocketAddressPtr() { return Marshal.UnsafeAddrOfPinnedArrayElement(m_SocketAddress.m_Buffer, 0); } // internal IntPtr GetSocketAddressSizePtr() { return Marshal.UnsafeAddrOfPinnedArrayElement(m_SocketAddress.m_Buffer, m_SocketAddress.GetAddressSizeOffset()); } // internal SocketAddress SocketAddress { get { return m_SocketAddress; } } // internal SocketAddress SocketAddressOriginal { get { return m_SocketAddressOriginal; } set { m_SocketAddressOriginal = value; } } // // 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[] buffer, int offset, int size, SocketAddress socketAddress, bool pinSocketAddress) { // // Fill in Buffer Array structure that will be used for our send/recv Buffer // m_SocketAddress = socketAddress; if (pinSocketAddress && m_SocketAddress != null) { object[] objectsToPin = null; objectsToPin = new object[2]; objectsToPin[0] = buffer; m_SocketAddress.CopyAddressSizeIntoBuffer(); objectsToPin[1] = m_SocketAddress.m_Buffer; base.SetUnmanagedStructures(objectsToPin); } else { base.SetUnmanagedStructures(buffer); } m_SingleBuffer.Length = size; m_SingleBuffer.Pointer = Marshal.UnsafeAddrOfPinnedArrayElement(buffer, offset); } internal void SetUnmanagedStructures(byte[] buffer, int offset, int size, SocketAddress socketAddress, bool pinSocketAddress, ref OverlappedCache overlappedCache) { SetupCache(ref overlappedCache); SetUnmanagedStructures(buffer, offset, size, socketAddress, pinSocketAddress); } internal void SetUnmanagedStructures(BufferOffsetSize[] buffers) { // // Fill in Buffer Array structure that will be used for our send/recv Buffer // m_WSABuffers = new WSABuffer[buffers.Length]; object[] objectsToPin = new object[buffers.Length]; for (int i = 0; i < buffers.Length; i++) objectsToPin[i] = buffers[i].Buffer; // has to be called now to pin memory base.SetUnmanagedStructures(objectsToPin); for (int i = 0; i < buffers.Length; i++) { m_WSABuffers[i].Length = buffers[i].Size; m_WSABuffers[i].Pointer = Marshal.UnsafeAddrOfPinnedArrayElement(buffers[i].Buffer, buffers[i].Offset); } } internal void SetUnmanagedStructures(BufferOffsetSize[] buffers, ref OverlappedCache overlappedCache) { SetupCache(ref overlappedCache); SetUnmanagedStructures(buffers); } internal void SetUnmanagedStructures(IList> buffers) { // Fill in Buffer Array structure that will be used for our send/recv Buffer // //make sure we don't let the app mess up the buffer array enough to cause //corruption. int count = buffers.Count; ArraySegment [] buffersCopy = new ArraySegment [count]; for (int i=0;i > buffers, ref OverlappedCache overlappedCache) { SetupCache(ref overlappedCache); SetUnmanagedStructures(buffers); } // // This method is called after an asynchronous call is made for the user, // it checks and acts accordingly if the IO: // 1) completed synchronously. // 2) was pended. // 3) failed. // internal override object PostCompletion(int numBytes) { if (ErrorCode == 0) { if(Logging.On)LogBuffer(numBytes); } return (int)numBytes; } void LogBuffer(int size) { GlobalLog.Assert(Logging.On, "OverlappedAsyncResult#{0}::LogBuffer()|Logging is off!", ValidationHelper.HashString(this)); if (size > -1) { if (m_WSABuffers != null) { foreach (WSABuffer wsaBuffer in m_WSABuffers) { Logging.Dump(Logging.Sockets, AsyncObject, "PostCompletion", wsaBuffer.Pointer, Math.Min(wsaBuffer.Length, size)); if ((size -= wsaBuffer.Length) <=0) break; } } else { Logging.Dump(Logging.Sockets, AsyncObject, "PostCompletion", m_SingleBuffer.Pointer, Math.Min(m_SingleBuffer.Length, size)); } } } }; // 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
- VisualStyleTypesAndProperties.cs
- CompileLiteralTextParser.cs
- Matrix3D.cs
- AssemblyBuilder.cs
- DragCompletedEventArgs.cs
- SoapEnumAttribute.cs
- AsyncResult.cs
- InheritanceAttribute.cs
- ConnectionInterfaceCollection.cs
- StreamGeometry.cs
- OleDbPropertySetGuid.cs
- InstanceCreationEditor.cs
- MouseGestureValueSerializer.cs
- RevocationPoint.cs
- BinaryExpression.cs
- ConfigurationElementCollection.cs
- ProviderBase.cs
- MetadataItem.cs
- TextServicesDisplayAttribute.cs
- ChildTable.cs
- PolyBezierSegment.cs
- XmlWhitespace.cs
- HostedHttpRequestAsyncResult.cs
- SpnegoTokenProvider.cs
- CultureMapper.cs
- DirectoryInfo.cs
- ExportOptions.cs
- ScalarType.cs
- SurrogateEncoder.cs
- ElementNotAvailableException.cs
- AmbientProperties.cs
- XmlSchemaSimpleContent.cs
- FixedHighlight.cs
- DbConnectionInternal.cs
- PointCollectionConverter.cs
- SafeNativeMethods.cs
- Expressions.cs
- EntityDesignerBuildProvider.cs
- PolyBezierSegment.cs
- ProjectionQueryOptionExpression.cs
- DataServiceProviderWrapper.cs
- MsdtcClusterUtils.cs
- ToolStripGripRenderEventArgs.cs
- ListViewItemEventArgs.cs
- SelectionHighlightInfo.cs
- XmlIlVisitor.cs
- WindowCollection.cs
- Scripts.cs
- RayMeshGeometry3DHitTestResult.cs
- SubstitutionList.cs
- StrokeDescriptor.cs
- StyleSelector.cs
- XmlnsPrefixAttribute.cs
- ToolStripDesignerUtils.cs
- TdsParser.cs
- Itemizer.cs
- x509utils.cs
- EmptyControlCollection.cs
- NotificationContext.cs
- ContainerActivationHelper.cs
- HandleRef.cs
- ContainerAction.cs
- TimeSpanSecondsConverter.cs
- ApplicationServiceHelper.cs
- sqlstateclientmanager.cs
- XDRSchema.cs
- ObjectQueryExecutionPlan.cs
- BinaryFormatterWriter.cs
- WorkflowRuntimeService.cs
- PageCache.cs
- ScrollProperties.cs
- IDQuery.cs
- Main.cs
- PropertyChangingEventArgs.cs
- CompilerHelpers.cs
- MultipartContentParser.cs
- MostlySingletonList.cs
- PenThreadWorker.cs
- Renderer.cs
- UnsafeNetInfoNativeMethods.cs
- PauseStoryboard.cs
- PoisonMessageException.cs
- WebPartCatalogCloseVerb.cs
- ECDiffieHellman.cs
- ServiceModelInstallComponent.cs
- InvokeBase.cs
- WebRequestModuleElementCollection.cs
- ConfigXmlSignificantWhitespace.cs
- Pkcs7Signer.cs
- XmlElementAttribute.cs
- InputReportEventArgs.cs
- MultiBindingExpression.cs
- StandardOleMarshalObject.cs
- LabelLiteral.cs
- CodeRemoveEventStatement.cs
- SubpageParaClient.cs
- ConsumerConnectionPoint.cs
- GenericsInstances.cs
- AuthorizationRule.cs
- KerberosRequestorSecurityToken.cs