SafeTimerHandle.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / CompMod / Microsoft / Win32 / SafeHandles / SafeTimerHandle.cs / 1 / SafeTimerHandle.cs
                        

                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
/*============================================================
** 
** Class:  SafeTimerHandle 
**
** Author: David Gutierrez ([....])  
**
** A wrapper for a timer handle
**
** Date:  July 23, 2002 
**
===========================================================*/ 
 
using System;
using System.Security; 
using System.Security.Permissions;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;
using Microsoft.Win32; 
using Microsoft.Win32.SafeHandles;
using System.Runtime.ConstrainedExecution; 
 
namespace Microsoft.Win32.SafeHandles {
    [HostProtectionAttribute(MayLeakOnAbort=true)] 
    [SuppressUnmanagedCodeSecurityAttribute]
    internal sealed class SafeTimerHandle : SafeHandleZeroOrMinusOneIsInvalid
    {
        // Note that CreateWaitableTimer returns 0 on failure 

        internal SafeTimerHandle() : base (true) {} 
 
        // Not currently used
        //[SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode=true)] 
        //internal SafeTimerHandle(IntPtr existingHandle, bool ownsHandle) : base(ownsHandle) {
        //    SetHandle(existingHandle);
        //}
 
        [DllImport(ExternDll.Kernel32, ExactSpelling=true, SetLastError=true)]
        [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] 
        private static extern bool CloseHandle(IntPtr handle); 

        override protected bool ReleaseHandle() 
        {
            return CloseHandle(handle);
        }
    } 
}

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