52 lines
1.6 KiB
C#
52 lines
1.6 KiB
C#
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// ==++==
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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// ==--==
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/*============================================================
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**
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** Class: SafeFileMappingHandle
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**
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** <EMAIL>Author: David Gutierrez ([....]) </EMAIL>
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**
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** A wrapper for handle to file mappings, returned by
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** CreateFileMapping and OpenFileMapping. Used for shared
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** memory.
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**
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** Date: July 8, 2002
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**
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===========================================================*/
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using System;
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using System.Security;
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using System.Security.Permissions;
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using System.Runtime.InteropServices;
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using System.Runtime.CompilerServices;
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using Microsoft.Win32;
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using Microsoft.Win32.SafeHandles;
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using System.Runtime.ConstrainedExecution;
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using System.Runtime.Versioning;
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namespace Microsoft.Win32.SafeHandles {
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[HostProtectionAttribute(MayLeakOnAbort = true)]
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[SuppressUnmanagedCodeSecurityAttribute]
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internal sealed class SafeFileMappingHandle : SafeHandleZeroOrMinusOneIsInvalid
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{
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// Note that CreateFileMapping returns 0 on failure.
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// Note that you can pass in -1 for the hFile parameter.
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[SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode=true)]
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internal SafeFileMappingHandle() : base(true) {}
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[DllImport(ExternDll.Kernel32, ExactSpelling=true, SetLastError=true)]
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[ResourceExposure(ResourceScope.None)]
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[ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
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private static extern bool CloseHandle(IntPtr handle);
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override protected bool ReleaseHandle()
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{
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return CloseHandle(handle);
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}
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}
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}
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