SafeProcessHandle.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 / fx / src / CompMod / Microsoft / Win32 / SafeHandles / SafeProcessHandle.cs / 1305376 / SafeProcessHandle.cs
                        

                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
/*============================================================
** 
** Class:  SafeProcessHandle 
**
** A wrapper for a process handle 
**
**
===========================================================*/
 
using System;
using System.Security; 
using System.Diagnostics; 
using System.Security.Permissions;
using System.Runtime.InteropServices; 
using System.Runtime.CompilerServices;
using Microsoft.Win32;
using Microsoft.Win32.SafeHandles;
using System.Runtime.ConstrainedExecution; 
using System.Runtime.Versioning;
 
namespace Microsoft.Win32.SafeHandles { 
    [SuppressUnmanagedCodeSecurityAttribute]
    internal sealed class SafeProcessHandle : SafeHandleZeroOrMinusOneIsInvalid 
    {
        internal static SafeProcessHandle InvalidHandle = new SafeProcessHandle(IntPtr.Zero);

        // Note that OpenProcess returns 0 on failure 

        internal SafeProcessHandle() : base(true) {} 
 
        internal SafeProcessHandle(IntPtr handle) : base (true) {
            SetHandle(handle); 
        }

        // Not currently called
        //[SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode=true)] 
        //internal SafeProcessHandle(IntPtr existingHandle, bool ownsHandle) : base(ownsHandle) {
        //    SetHandle(existingHandle); 
        //} 

        [DllImport(ExternDll.Kernel32, CharSet=System.Runtime.InteropServices.CharSet.Auto, SetLastError=true)] 
        [ResourceExposure(ResourceScope.Machine)]
        internal static extern SafeProcessHandle OpenProcess(int access, bool inherit, int processId);

 
        internal void InitialSetHandle(IntPtr h){
            Debug.Assert(base.IsInvalid, "Safe handle should only be set once"); 
            base.handle = h; 
        }
 
        override protected bool ReleaseHandle()
        {
            return SafeNativeMethods.CloseHandle(handle);
        } 

    } 
} 

 



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

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