Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / Net / System / Net / Sockets / _OverlappedAsyncResult.cs / 1 / _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
- UpDownEvent.cs
- ProcessHostMapPath.cs
- OptimizedTemplateContent.cs
- InteropBitmapSource.cs
- FileDetails.cs
- IItemProperties.cs
- OdbcParameter.cs
- AttributeUsageAttribute.cs
- BuildResultCache.cs
- WorkflowRuntimeBehavior.cs
- XmlTextReaderImpl.cs
- FieldDescriptor.cs
- WindowsGraphicsCacheManager.cs
- TextSerializer.cs
- XmlDocumentSurrogate.cs
- InternalDispatchObject.cs
- MenuCommand.cs
- ConnectionStringSettings.cs
- QilDataSource.cs
- PartBasedPackageProperties.cs
- PersonalizationAdministration.cs
- IpcChannelHelper.cs
- CodeAttributeDeclaration.cs
- HtmlMeta.cs
- BoolExpressionVisitors.cs
- QueryContinueDragEventArgs.cs
- QilPatternVisitor.cs
- TypefaceMetricsCache.cs
- ActivityInterfaces.cs
- PopupRootAutomationPeer.cs
- NetCodeGroup.cs
- HostedElements.cs
- SHA1CryptoServiceProvider.cs
- XpsPackagingPolicy.cs
- Object.cs
- _SslStream.cs
- PropertySegmentSerializer.cs
- TypeToken.cs
- SynchronizedDispatch.cs
- BrowserTree.cs
- SqlConnectionHelper.cs
- ListViewDeletedEventArgs.cs
- TreeViewDesigner.cs
- TitleStyle.cs
- FieldToken.cs
- OracleBoolean.cs
- ElapsedEventArgs.cs
- Script.cs
- _LocalDataStoreMgr.cs
- GC.cs
- RoleManagerSection.cs
- DateTimeFormatInfo.cs
- UpdateCompiler.cs
- PrivateUnsafeNativeCompoundFileMethods.cs
- CodeTypeMember.cs
- RenderTargetBitmap.cs
- SystemIPv6InterfaceProperties.cs
- Hyperlink.cs
- MasterPageCodeDomTreeGenerator.cs
- CodeAttributeArgumentCollection.cs
- SqlRemoveConstantOrderBy.cs
- Guid.cs
- FrameworkContentElementAutomationPeer.cs
- ExpandableObjectConverter.cs
- NameTable.cs
- UnmanagedMemoryStream.cs
- XmlSchemaChoice.cs
- TextElementCollectionHelper.cs
- SectionInput.cs
- SqlInternalConnectionTds.cs
- XmlSchemaInclude.cs
- FaultConverter.cs
- TargetControlTypeAttribute.cs
- ReadOnlyDataSourceView.cs
- ShutDownListener.cs
- CapabilitiesSection.cs
- ValueSerializerAttribute.cs
- TypeDescriptionProvider.cs
- LayoutUtils.cs
- UnionCqlBlock.cs
- CopyCodeAction.cs
- MergeFailedEvent.cs
- Int32Converter.cs
- AutoGeneratedField.cs
- XmlStringTable.cs
- StringStorage.cs
- BroadcastEventHelper.cs
- WmlValidatorAdapter.cs
- PageContent.cs
- InputScopeNameConverter.cs
- ClockController.cs
- TextTreeDeleteContentUndoUnit.cs
- SinglePhaseEnlistment.cs
- GeneralTransform3DCollection.cs
- BrowserCapabilitiesCompiler.cs
- NotSupportedException.cs
- unsafenativemethodsother.cs
- CFStream.cs
- EncoderReplacementFallback.cs
- QilParameter.cs