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