2 // Microsoft.Win32.SafeHandles.CriticalHandleMinusOneIsInvalid
5 // Zoltan Varga (vargaz@gmail.com)
6 // Miguel de Icaza (miguel@novell.com)
8 // Copyright (C) 2005, 2006 Novell, Inc (http://www.novell.com)
10 // Permission is hereby granted, free of charge, to any person obtaining
11 // a copy of this software and associated documentation files (the
12 // "Software"), to deal in the Software without restriction, including
13 // without limitation the rights to use, copy, modify, merge, publish,
14 // distribute, sublicense, and/or sell copies of the Software, and to
15 // permit persons to whom the Software is furnished to do so, subject to
16 // the following conditions:
18 // The above copyright notice and this permission notice shall be
19 // included in all copies or substantial portions of the Software.
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25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
33 using System.Runtime.InteropServices;
34 using System.Runtime.ConstrainedExecution;
36 namespace Microsoft.Win32.SafeHandles {
38 public abstract class CriticalHandleMinusOneIsInvalid : CriticalHandle, IDisposable {
39 [ReliabilityContract (Consistency.WillNotCorruptState, Cer.MayFail)]
40 protected CriticalHandleMinusOneIsInvalid () : base ((IntPtr) (-1)) {
43 public override bool IsInvalid {
45 return handle == (IntPtr)(-1);