SafeLocalAllocation.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WCF / Tools / WSATConfig / Configuration / SafeLocalAllocation.cs / 1305376 / SafeLocalAllocation.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------

namespace Microsoft.Tools.ServiceModel.WsatConfig 
{
    using System; 
    using System.Security; 
    using System.Security.Permissions;
    using System.Runtime.InteropServices; 
    using System.Runtime.CompilerServices;
    using System.Runtime.ConstrainedExecution;
    using Microsoft.Win32.SafeHandles;
 
    sealed class SafeLocalAllocation : SafeHandleZeroOrMinusOneIsInvalid
    { 
        [SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode = true)] 
        internal SafeLocalAllocation(int size)
            : base(true) 
        {
#pragma warning suppress 56523
            IntPtr pointer = SafeNativeMethods.LocalAlloc(SafeNativeMethods.LMEM_ZEROINIT, size);
 
            SetHandle(pointer);
        } 
 
#if WSAT_UI
        [SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode = true)] 
        internal SafeLocalAllocation(object source)
            : base(true)
        {
#pragma warning suppress 56523 
            IntPtr pointer = SafeNativeMethods.LocalAlloc(SafeNativeMethods.LMEM_ZEROINIT, Marshal.SizeOf(source));
 
            SetHandle(pointer); 
            Marshal.StructureToPtr(
                source, 
                handle,
                false);
        }
#endif 

        internal void Copy(byte[] source, int startIndex, int count) 
        { 
            System.Runtime.InteropServices.Marshal.Copy(
                    source, 
                    startIndex,
                    handle,
                    count);
        } 

        protected override bool ReleaseHandle() 
        { 
#pragma warning suppress 56523
            IntPtr r = SafeNativeMethods.LocalFree(handle); 
            return r == IntPtr.Zero;
        }
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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