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// ==++==
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// ==--==
/*============================================================
**
** Class: SafeViewOfFileHandle
**
**
** A wrapper for file handles
**
**
===========================================================*/
using System;
using System.Security;
using System.Security.Permissions;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;
using System.Runtime.ConstrainedExecution;
using System.Runtime.Versioning;
using Microsoft.Win32;
using Microsoft.Win32.SafeHandles;
namespace Microsoft.Win32.SafeHandles
{
[System.Security.SecurityCritical] // auto-generated
internal sealed class SafeViewOfFileHandle : SafeHandleZeroOrMinusOneIsInvalid
{
[System.Security.SecurityCritical] // auto-generated_required
internal SafeViewOfFileHandle() : base(true) {}
// 0 is an Invalid Handle
[System.Security.SecurityCritical] // auto-generated_required
internal SafeViewOfFileHandle(IntPtr handle, bool ownsHandle) : base (ownsHandle) {
SetHandle(handle);
}
[System.Security.SecurityCritical]
[ResourceExposure(ResourceScope.Machine)]
[ResourceConsumption(ResourceScope.Machine)]
override protected bool ReleaseHandle()
{
if (Win32Native.UnmapViewOfFile(handle))
{
handle = IntPtr.Zero;
return true;
}
return false;
}
}
}
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