Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Data / System / Data / Common / SafeNativeMethods.cs / 1305376 / SafeNativeMethods.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //[....] //----------------------------------------------------------------------------- using System; using System.Runtime.CompilerServices; using System.Runtime.InteropServices; using System.Security; using System.Security.Permissions; using System.Text; using System.Threading; using System.Runtime.ConstrainedExecution; using System.Runtime.Versioning; namespace System.Data.Common { [SuppressUnmanagedCodeSecurityAttribute()] internal static class SafeNativeMethods { [DllImport(ExternDll.Ole32, SetLastError=false)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.MayFail)] [ResourceExposure(ResourceScope.None)] static internal extern IntPtr CoTaskMemAlloc(IntPtr cb); [DllImport(ExternDll.Ole32, SetLastError=false)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] [ResourceExposure(ResourceScope.None)] static internal extern void CoTaskMemFree(IntPtr handle); [DllImport(ExternDll.Kernel32, CharSet=CharSet.Unicode, PreserveSig=true)] [ResourceExposure(ResourceScope.None)] static internal extern int GetUserDefaultLCID(); #if !ORACLE [DllImport(ExternDll.Kernel32, PreserveSig=true)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] [ResourceExposure(ResourceScope.None)] static internal extern void ZeroMemory(IntPtr dest, IntPtr length); #endif /*[DllImport(ExternDll.Kernel32)] static internal extern IntPtr InterlockedCompareExchange( IntPtr Destination, // destination address IntPtr Exchange, // exchange value IntPtr Comperand // value to compare );*/ //// Using the int versions of the Increment() and Decrement() methods is correct. // Please check \fx\src\Data\System\Data\Odbc\OdbcHandle.cs for the memory layout. // //// The following casting operations require these three methods to be unsafe. This is // a workaround for this issue to meet the M1 exit criteria. We need to revisit this in M2. [ReliabilityContract(Consistency.WillNotCorruptState, Cer.MayFail)] static internal unsafe IntPtr InterlockedExchangePointer( IntPtr lpAddress, IntPtr lpValue) { IntPtr previousPtr; IntPtr actualPtr = *(IntPtr *)lpAddress.ToPointer(); do { previousPtr = actualPtr; actualPtr = Interlocked.CompareExchange(ref *(IntPtr *)lpAddress.ToPointer(), lpValue, previousPtr); } while (actualPtr != previousPtr); return actualPtr; } // http://msdn.microsoft.com/library/default.asp?url=/library/en-us/sysinfo/base/getcomputernameex.asp [DllImport(ExternDll.Kernel32, CharSet = CharSet.Unicode, EntryPoint="GetComputerNameExW", SetLastError=true)] [ResourceExposure(ResourceScope.None)] static internal extern int GetComputerNameEx(int nameType, StringBuilder nameBuffer, ref int bufferSize); [DllImport(ExternDll.Kernel32, CharSet=System.Runtime.InteropServices.CharSet.Auto)] [ResourceExposure(ResourceScope.Process)] static internal extern int GetCurrentProcessId(); [DllImport(ExternDll.Kernel32, CharSet=CharSet.Auto, BestFitMapping=false, ThrowOnUnmappableChar=true)] // [DllImport(ExternDll.Kernel32, CharSet=CharSet.Auto)] [ResourceExposure(ResourceScope.Process)] static internal extern IntPtr GetModuleHandle([MarshalAs(UnmanagedType.LPTStr), In] string moduleName/*lpctstr*/); [DllImport(ExternDll.Kernel32, CharSet=CharSet.Ansi, BestFitMapping=false, ThrowOnUnmappableChar=true)] // [DllImport(ExternDll.Kernel32, CharSet=CharSet.Ansi)] [ResourceExposure(ResourceScope.None)] static internal extern IntPtr GetProcAddress(IntPtr HModule, [MarshalAs(UnmanagedType.LPStr), In] string funcName/*lpcstr*/); [DllImport(ExternDll.Kernel32)] [ResourceExposure(ResourceScope.None)] internal static extern void GetSystemTimeAsFileTime(out long lpSystemTimeAsFileTime); [DllImport(ExternDll.Kernel32, SetLastError=true)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.MayFail)] [ResourceExposure(ResourceScope.None)] static internal extern IntPtr LocalAlloc(int flags, IntPtr countOfBytes); [DllImport(ExternDll.Kernel32, SetLastError=true)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] [ResourceExposure(ResourceScope.None)] static internal extern IntPtr LocalFree(IntPtr handle); [DllImport(ExternDll.Oleaut32, CharSet=CharSet.Unicode)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.MayFail)] [ResourceExposure(ResourceScope.None)] internal static extern IntPtr SysAllocStringLen(String src, int len); // BSTR [DllImport(ExternDll.Oleaut32)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] [ResourceExposure(ResourceScope.None)] internal static extern void SysFreeString(IntPtr bstr); // only using this to clear existing error info with null [DllImport(ExternDll.Oleaut32, CharSet=CharSet.Unicode, PreserveSig=false)] // TLS values are preserved between threads, need to check that we use this API to clear the error state only. [ResourceExposure(ResourceScope.Process)] static private extern void SetErrorInfo(Int32 dwReserved, IntPtr pIErrorInfo); [DllImport(ExternDll.Kernel32, SetLastError=true)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.MayFail)] [ResourceExposure(ResourceScope.Machine)] static internal extern int ReleaseSemaphore(IntPtr handle, int releaseCount, IntPtr previousCount); [DllImport(ExternDll.Kernel32, SetLastError=true)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.MayFail)] [ResourceExposure(ResourceScope.None)] static internal extern int WaitForMultipleObjectsEx(uint nCount, IntPtr lpHandles, bool bWaitAll, uint dwMilliseconds, bool bAlertable); [DllImport(ExternDll.Kernel32/*, SetLastError=true*/)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.MayFail)] [ResourceExposure(ResourceScope.None)] static internal extern int WaitForSingleObjectEx(IntPtr lpHandles, uint dwMilliseconds, bool bAlertable); [DllImport(ExternDll.Ole32, PreserveSig=false)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] [ResourceExposure(ResourceScope.None)] static internal extern void PropVariantClear(IntPtr pObject); [DllImport(ExternDll.Oleaut32, PreserveSig=false)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] [ResourceExposure(ResourceScope.None)] static internal extern void VariantClear(IntPtr pObject); sealed internal class Wrapper { private Wrapper() { } // SxS: clearing error information is considered safe [ResourceExposure(ResourceScope.None)] [ResourceConsumption(ResourceScope.Process, ResourceScope.Process)] static internal void ClearErrorInfo() { // MDAC 68199 SafeNativeMethods.SetErrorInfo(0, ADP.PtrZero); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ // // Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //[....] //[....] //----------------------------------------------------------------------------- using System; using System.Runtime.CompilerServices; using System.Runtime.InteropServices; using System.Security; using System.Security.Permissions; using System.Text; using System.Threading; using System.Runtime.ConstrainedExecution; using System.Runtime.Versioning; namespace System.Data.Common { [SuppressUnmanagedCodeSecurityAttribute()] internal static class SafeNativeMethods { [DllImport(ExternDll.Ole32, SetLastError=false)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.MayFail)] [ResourceExposure(ResourceScope.None)] static internal extern IntPtr CoTaskMemAlloc(IntPtr cb); [DllImport(ExternDll.Ole32, SetLastError=false)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] [ResourceExposure(ResourceScope.None)] static internal extern void CoTaskMemFree(IntPtr handle); [DllImport(ExternDll.Kernel32, CharSet=CharSet.Unicode, PreserveSig=true)] [ResourceExposure(ResourceScope.None)] static internal extern int GetUserDefaultLCID(); #if !ORACLE [DllImport(ExternDll.Kernel32, PreserveSig=true)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] [ResourceExposure(ResourceScope.None)] static internal extern void ZeroMemory(IntPtr dest, IntPtr length); #endif /*[DllImport(ExternDll.Kernel32)] static internal extern IntPtr InterlockedCompareExchange( IntPtr Destination, // destination address IntPtr Exchange, // exchange value IntPtr Comperand // value to compare );*/ //// Using the int versions of the Increment() and Decrement() methods is correct. // Please check \fx\src\Data\System\Data\Odbc\OdbcHandle.cs for the memory layout. // //// The following casting operations require these three methods to be unsafe. This is // a workaround for this issue to meet the M1 exit criteria. We need to revisit this in M2. [ReliabilityContract(Consistency.WillNotCorruptState, Cer.MayFail)] static internal unsafe IntPtr InterlockedExchangePointer( IntPtr lpAddress, IntPtr lpValue) { IntPtr previousPtr; IntPtr actualPtr = *(IntPtr *)lpAddress.ToPointer(); do { previousPtr = actualPtr; actualPtr = Interlocked.CompareExchange(ref *(IntPtr *)lpAddress.ToPointer(), lpValue, previousPtr); } while (actualPtr != previousPtr); return actualPtr; } // http://msdn.microsoft.com/library/default.asp?url=/library/en-us/sysinfo/base/getcomputernameex.asp [DllImport(ExternDll.Kernel32, CharSet = CharSet.Unicode, EntryPoint="GetComputerNameExW", SetLastError=true)] [ResourceExposure(ResourceScope.None)] static internal extern int GetComputerNameEx(int nameType, StringBuilder nameBuffer, ref int bufferSize); [DllImport(ExternDll.Kernel32, CharSet=System.Runtime.InteropServices.CharSet.Auto)] [ResourceExposure(ResourceScope.Process)] static internal extern int GetCurrentProcessId(); [DllImport(ExternDll.Kernel32, CharSet=CharSet.Auto, BestFitMapping=false, ThrowOnUnmappableChar=true)] // [DllImport(ExternDll.Kernel32, CharSet=CharSet.Auto)] [ResourceExposure(ResourceScope.Process)] static internal extern IntPtr GetModuleHandle([MarshalAs(UnmanagedType.LPTStr), In] string moduleName/*lpctstr*/); [DllImport(ExternDll.Kernel32, CharSet=CharSet.Ansi, BestFitMapping=false, ThrowOnUnmappableChar=true)] // [DllImport(ExternDll.Kernel32, CharSet=CharSet.Ansi)] [ResourceExposure(ResourceScope.None)] static internal extern IntPtr GetProcAddress(IntPtr HModule, [MarshalAs(UnmanagedType.LPStr), In] string funcName/*lpcstr*/); [DllImport(ExternDll.Kernel32)] [ResourceExposure(ResourceScope.None)] internal static extern void GetSystemTimeAsFileTime(out long lpSystemTimeAsFileTime); [DllImport(ExternDll.Kernel32, SetLastError=true)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.MayFail)] [ResourceExposure(ResourceScope.None)] static internal extern IntPtr LocalAlloc(int flags, IntPtr countOfBytes); [DllImport(ExternDll.Kernel32, SetLastError=true)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] [ResourceExposure(ResourceScope.None)] static internal extern IntPtr LocalFree(IntPtr handle); [DllImport(ExternDll.Oleaut32, CharSet=CharSet.Unicode)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.MayFail)] [ResourceExposure(ResourceScope.None)] internal static extern IntPtr SysAllocStringLen(String src, int len); // BSTR [DllImport(ExternDll.Oleaut32)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] [ResourceExposure(ResourceScope.None)] internal static extern void SysFreeString(IntPtr bstr); // only using this to clear existing error info with null [DllImport(ExternDll.Oleaut32, CharSet=CharSet.Unicode, PreserveSig=false)] // TLS values are preserved between threads, need to check that we use this API to clear the error state only. [ResourceExposure(ResourceScope.Process)] static private extern void SetErrorInfo(Int32 dwReserved, IntPtr pIErrorInfo); [DllImport(ExternDll.Kernel32, SetLastError=true)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.MayFail)] [ResourceExposure(ResourceScope.Machine)] static internal extern int ReleaseSemaphore(IntPtr handle, int releaseCount, IntPtr previousCount); [DllImport(ExternDll.Kernel32, SetLastError=true)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.MayFail)] [ResourceExposure(ResourceScope.None)] static internal extern int WaitForMultipleObjectsEx(uint nCount, IntPtr lpHandles, bool bWaitAll, uint dwMilliseconds, bool bAlertable); [DllImport(ExternDll.Kernel32/*, SetLastError=true*/)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.MayFail)] [ResourceExposure(ResourceScope.None)] static internal extern int WaitForSingleObjectEx(IntPtr lpHandles, uint dwMilliseconds, bool bAlertable); [DllImport(ExternDll.Ole32, PreserveSig=false)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] [ResourceExposure(ResourceScope.None)] static internal extern void PropVariantClear(IntPtr pObject); [DllImport(ExternDll.Oleaut32, PreserveSig=false)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] [ResourceExposure(ResourceScope.None)] static internal extern void VariantClear(IntPtr pObject); sealed internal class Wrapper { private Wrapper() { } // SxS: clearing error information is considered safe [ResourceExposure(ResourceScope.None)] [ResourceConsumption(ResourceScope.Process, ResourceScope.Process)] static internal void ClearErrorInfo() { // MDAC 68199 SafeNativeMethods.SetErrorInfo(0, ADP.PtrZero); } } } } // 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
- ManifestResourceInfo.cs
- CustomPopupPlacement.cs
- XamlReaderConstants.cs
- DataGridViewRowCancelEventArgs.cs
- CodeCommentStatement.cs
- Figure.cs
- DataGridViewRow.cs
- DSASignatureFormatter.cs
- RuntimeConfigurationRecord.cs
- SrgsElementFactory.cs
- FocusChangedEventArgs.cs
- FormViewUpdateEventArgs.cs
- PropertyPath.cs
- EncoderBestFitFallback.cs
- SqlBooleanMismatchVisitor.cs
- AmbientValueAttribute.cs
- IISUnsafeMethods.cs
- StatusBarItemAutomationPeer.cs
- HttpVersion.cs
- LocatorBase.cs
- WebPartZoneCollection.cs
- Pair.cs
- AssemblyInfo.cs
- FSWPathEditor.cs
- IndexOutOfRangeException.cs
- Missing.cs
- BooleanToVisibilityConverter.cs
- IndependentAnimationStorage.cs
- Atom10FormatterFactory.cs
- ActiveXHelper.cs
- SessionEndingCancelEventArgs.cs
- DbParameterCollectionHelper.cs
- EpmContentSerializer.cs
- CodeCompiler.cs
- SingleAnimation.cs
- StringSource.cs
- SnapLine.cs
- ArrangedElementCollection.cs
- CompilerErrorCollection.cs
- Sql8ExpressionRewriter.cs
- ImageClickEventArgs.cs
- ConnectionConsumerAttribute.cs
- WebChannelFactory.cs
- StrokeNodeOperations.cs
- StringSource.cs
- StreamInfo.cs
- RNGCryptoServiceProvider.cs
- FlowPosition.cs
- CorrelationTokenInvalidatedHandler.cs
- Atom10ItemFormatter.cs
- TypedTableBaseExtensions.cs
- ConfigurationStrings.cs
- HttpStreams.cs
- RegisteredDisposeScript.cs
- Variant.cs
- newitemfactory.cs
- PersonalizationState.cs
- DataSourceIDConverter.cs
- EmptyEnumerable.cs
- XmlConverter.cs
- LocalIdKeyIdentifierClause.cs
- TreeSet.cs
- PromptBuilder.cs
- ExpressionSelection.cs
- GridView.cs
- WrapperEqualityComparer.cs
- ZipIOExtraFieldElement.cs
- DragDeltaEventArgs.cs
- SocketElement.cs
- Configuration.cs
- PbrsForward.cs
- ImageSourceConverter.cs
- SpotLight.cs
- AnimatedTypeHelpers.cs
- BulletedList.cs
- SqlClientMetaDataCollectionNames.cs
- CounterSampleCalculator.cs
- RowToParametersTransformer.cs
- IList.cs
- SerializationSectionGroup.cs
- DropShadowEffect.cs
- SelectionRangeConverter.cs
- LayoutEvent.cs
- QueryResponse.cs
- PointLight.cs
- OverrideMode.cs
- WindowsScrollBarBits.cs
- SimpleRecyclingCache.cs
- datacache.cs
- XmlSecureResolver.cs
- WindowsSysHeader.cs
- PopupRoot.cs
- DataGridViewImageColumn.cs
- InvalidComObjectException.cs
- ClrPerspective.cs
- DispatchChannelSink.cs
- ServiceDescriptions.cs
- HttpCapabilitiesSectionHandler.cs
- SectionUpdates.cs
- ScriptReferenceBase.cs