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 using System;
  13 using System.Runtime.CompilerServices;
  14
  15 namespace System.Threading
  16 {
  17         public sealed class Mutex : WaitHandle
  18         {
  19                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  20                 private static extern IntPtr  CreateMutex_internal(
  21                                                          bool initiallyOwned,
  22                                                          string name);
  23
  24                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  25                 private static extern void ReleaseMutex_internal(IntPtr handle);
  26
  27                 public Mutex() {
  28                         os_handle=CreateMutex_internal(false,null);
  29                 }
  30
  31                 public Mutex(bool initiallyOwned) {
  32                         os_handle=CreateMutex_internal(initiallyOwned,null);
  33                 }
  34
  35                 public Mutex(bool initiallyOwned, string name) {
  36                         os_handle=CreateMutex_internal(initiallyOwned,name);
  37                 }
  38
  39
  40                 public Mutex(bool initiallyOwned, string name, out bool gotOwnership) {
  41                         os_handle=CreateMutex_internal(initiallyOwned,name);
  42                         gotOwnership=false;
  43                 }
  44
  45                 public void ReleaseMutex() {
  46                         ReleaseMutex_internal(os_handle);
  47                 }
  48         }
  49 }