// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System;
using System.Runtime.InteropServices;
 
namespace Microsoft.Win32.SafeHandles
{
    // Class of safe handle which uses 0 or -1 as an invalid handle.
    public abstract class SafeHandleZeroOrMinusOneIsInvalid : SafeHandle
    {
        protected SafeHandleZeroOrMinusOneIsInvalid(bool ownsHandle) : base(IntPtr.Zero, ownsHandle)
        {
        }
 
        public override bool IsInvalid => handle == IntPtr.Zero || handle == new IntPtr(-1);
    }
}