mcs/class/corlib/System.Threading/Mutex.cs

   1 //
   2 // System.Threading.Mutex.cs
   3 //
   4 // Author:
   5 //
   6 //   Dick Porter (dick@ximian.com)
   7 //   Veronica De Santis (veron78@interfree.it)
   8 //
   9 // (C) Ximian, Inc.  http://www.ximian.com
  10 //
  11
  12 //
  13 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  14 //
  15 // Permission is hereby granted, free of charge, to any person obtaining
  16 // a copy of this software and associated documentation files (the
  17 // "Software"), to deal in the Software without restriction, including
  18 // without limitation the rights to use, copy, modify, merge, publish,
  19 // distribute, sublicense, and/or sell copies of the Software, and to
  20 // permit persons to whom the Software is furnished to do so, subject to
  21 // the following conditions:
  22 //
  23 // The above copyright notice and this permission notice shall be
  24 // included in all copies or substantial portions of the Software.
  25 //
  26 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  27 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  28 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  29 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  30 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  31 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  32 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  33 //
  34
  35 using System;
  36 using System.Runtime.CompilerServices;
  37
  38 namespace System.Threading
  39 {
  40         public sealed class Mutex : WaitHandle
  41         {
  42                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  43                 private static extern IntPtr  CreateMutex_internal(
  44                                                          bool initiallyOwned,
  45                                                          string name,
  46                                                          out bool created);
  47
  48                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  49                 private static extern void ReleaseMutex_internal(IntPtr handle);
  50
  51                 public Mutex() {
  52                         bool created;
  53
  54                         Handle=CreateMutex_internal(false, null, out created);
  55                 }
  56
  57                 public Mutex(bool initiallyOwned) {
  58                         bool created;
  59
  60                         Handle=CreateMutex_internal(initiallyOwned, null,
  61                                                     out created);
  62                 }
  63
  64                 public Mutex(bool initiallyOwned, string name) {
  65                         bool created;
  66
  67                         Handle=CreateMutex_internal(initiallyOwned, name,
  68                                                     out created);
  69                 }
  70
  71
  72                 public Mutex(bool initiallyOwned, string name,
  73                              out bool createdNew) {
  74                         Handle=CreateMutex_internal(initiallyOwned, name,
  75                                                     out createdNew);
  76                 }
  77
  78                 public void ReleaseMutex() {
  79                         ReleaseMutex_internal(Handle);
  80                 }
  81         }
  82 }