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

   1 //
   2 // System.Threading.EventWaitHandle.cs
   3 //
   4 // Author:
   5 //      Dick Porter (dick@ximian.com)
   6 //
   7 // (C) Ximian, Inc.     (http://www.ximian.com)
   8 // Copyright (C) 2005 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 #if NET_2_0
  31
  32 using System.Security.AccessControl;
  33 using System.IO;
  34 using System.Runtime.InteropServices;
  35
  36 namespace System.Threading
  37 {
  38         [ComVisible (true)]
  39         public class EventWaitHandle : WaitHandle
  40         {
  41                 private EventWaitHandle (IntPtr handle)
  42                 {
  43                         Handle = handle;
  44                 }
  45
  46                 public EventWaitHandle (bool initialState, EventResetMode mode)
  47                 {
  48                         bool created;
  49
  50                         Handle = NativeEventCalls.CreateEvent_internal ((mode == EventResetMode.ManualReset), initialState, null, out created);
  51                 }
  52
  53                 public EventWaitHandle (bool initialState, EventResetMode mode,
  54                                         string name)
  55                 {
  56                         bool created;
  57
  58                         Handle = NativeEventCalls.CreateEvent_internal ((mode == EventResetMode.ManualReset), initialState, name, out created);
  59                 }
  60
  61                 public EventWaitHandle (bool initialState, EventResetMode mode,
  62                                         string name, out bool createdNew)
  63                 {
  64                         Handle = NativeEventCalls.CreateEvent_internal ((mode == EventResetMode.ManualReset), initialState, name, out createdNew);
  65                 }
  66
  67                 [MonoTODO ("Implement access control")]
  68                 public EventWaitHandle (bool initialState, EventResetMode mode,
  69                                         string name, out bool createdNew,
  70                                         EventWaitHandleSecurity eventSecurity)
  71                 {
  72                         Handle = NativeEventCalls.CreateEvent_internal ((mode == EventResetMode.ManualReset), initialState, name, out createdNew);
  73                 }
  74
  75                 [MonoTODO]
  76                 public EventWaitHandleSecurity GetAccessControl ()
  77                 {
  78                         throw new NotImplementedException ();
  79                 }
  80
  81                 public static EventWaitHandle OpenExisting (string name)
  82                 {
  83                         return(OpenExisting (name, EventWaitHandleRights.Synchronize | EventWaitHandleRights.Modify));
  84                 }
  85
  86                 public static EventWaitHandle OpenExisting (string name, EventWaitHandleRights rights)
  87                 {
  88                         if (name == null) {
  89                                 throw new ArgumentNullException ("name");
  90                         }
  91                         if ((name.Length == 0) ||
  92                             (name.Length > 260)) {
  93                                 throw new ArgumentException ("name", Locale.GetText ("Invalid length [1-260]."));
  94                         }
  95
  96                         MonoIOError error;
  97                         IntPtr handle = NativeEventCalls.OpenEvent_internal (name, rights, out error);
  98                         if (handle == (IntPtr)null) {
  99                                 if (error == MonoIOError.ERROR_FILE_NOT_FOUND) {
 100                                         throw new WaitHandleCannotBeOpenedException (Locale.GetText ("Named Event handle does not exist: ") + name);
 101                                 } else if (error == MonoIOError.ERROR_ACCESS_DENIED) {
 102                                         throw new UnauthorizedAccessException ();
 103                                 } else {
 104                                         throw new IOException (Locale.GetText ("Win32 IO error: ") + error.ToString ());
 105                                 }
 106                         }
 107
 108                         return(new EventWaitHandle (handle));
 109                 }
 110
 111                 public bool Reset ()
 112                 {
 113                         CheckDisposed ();
 114
 115                         return (NativeEventCalls.ResetEvent_internal (Handle));
 116                 }
 117
 118                 public bool Set ()
 119                 {
 120                         CheckDisposed ();
 121
 122                         return (NativeEventCalls.SetEvent_internal (Handle));
 123                 }
 124
 125                 [MonoTODO]
 126                 public void SetAccessControl (EventWaitHandleSecurity eventSecurity)
 127                 {
 128                         throw new NotImplementedException ();
 129                 }
 130         }
 131 }
 132
 133 #endif