class/corlib/Microsoft.Win32.SafeHandles/SafeWaitHandle.cs

   1 //
   2 // Microsoft.Win32.SafeHandles.SafeWaitHandle
   3 //
   4 // Author:
   5 //      Sebastien Pouliot  <sebastien@ximian.com>
   6 //      Miguel de Icaza    <miguel@novell.com>
   7 //
   8 // Copyright (C) 2005, 2006 Novell, Inc (http://www.novell.com)
   9 //
  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:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  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.
  28 //
  29
  30 using System;
  31 using System.IO;
  32 using System.Threading;
  33 using System.Runtime.ConstrainedExecution;
  34
  35 namespace Microsoft.Win32.SafeHandles {
  36
  37         public sealed class SafeWaitHandle : SafeHandleZeroOrMinusOneIsInvalid {
  38                 [ReliabilityContract (Consistency.WillNotCorruptState, Cer.MayFail)]
  39                 public SafeWaitHandle (IntPtr existingHandle, bool ownsHandle) : base (ownsHandle)
  40                 {
  41                         SetHandle (existingHandle);
  42                 }
  43
  44                 protected override bool ReleaseHandle ()
  45                 {
  46                         NativeEventCalls.CloseEvent_internal (handle);
  47                         return true;
  48                 }
  49
  50         }
  51 }