mcs/class/corlib/System.Runtime.Remoting.Services/TrackingServices.cs

   1 //
   2 // System.Runtime.Remoting.Services.TrackingServices.cs
   3 //
   4 // Author:
   5 //      Jaime Anguiano Olarra (jaime@gnome.org)
   6 //      Patrik Torstensson
   7 //
   8 // (C) 2002, Jaime Anguiano Olarra
   9 //
  10
  11 //
  12 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  13 //
  14 // Permission is hereby granted, free of charge, to any person obtaining
  15 // a copy of this software and associated documentation files (the
  16 // "Software"), to deal in the Software without restriction, including
  17 // without limitation the rights to use, copy, modify, merge, publish,
  18 // distribute, sublicense, and/or sell copies of the Software, and to
  19 // permit persons to whom the Software is furnished to do so, subject to
  20 // the following conditions:
  21 //
  22 // The above copyright notice and this permission notice shall be
  23 // included in all copies or substantial portions of the Software.
  24 //
  25 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  29 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  30 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  31 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  32 //
  33
  34 using System;
  35 using System.Collections;
  36 using System.Runtime.Remoting;
  37
  38 namespace System.Runtime.Remoting.Services {
  39         public class TrackingServices {
  40                 static ArrayList _handlers = new ArrayList();
  41
  42                 public TrackingServices () {
  43                 }
  44
  45                 public static void RegisterTrackingHandler (ITrackingHandler handler) {
  46                         if (null == handler)
  47                                 throw new ArgumentNullException("handler");
  48
  49                         lock (typeof(TrackingServices)) {
  50                                 if (-1 != _handlers.IndexOf(handler))
  51                                         throw new RemotingException("handler already registered");
  52
  53                                 _handlers.Add(handler);
  54                         }
  55                 }
  56
  57                 public static void UnregisterTrackingHandler (ITrackingHandler handler) {
  58                         if (null == handler)
  59                                 throw new ArgumentNullException("handler");
  60
  61                         lock (typeof(TrackingServices)) {
  62                                 int idx = _handlers.IndexOf(handler);
  63                                 if (idx == -1)
  64                                         throw new RemotingException("handler is not registered");
  65
  66                                 _handlers.RemoveAt(idx);
  67                         }
  68                 }
  69
  70                 public static ITrackingHandler[] RegisteredHandlers {
  71                         get {
  72                                 lock (typeof(TrackingServices)) {
  73                                         if (_handlers.Count == 0)
  74                                                 return new ITrackingHandler[0];
  75
  76
  77                                         return (ITrackingHandler[]) _handlers.ToArray();
  78                                 }
  79                         }
  80                 }
  81
  82                 internal static void NotifyMarshaledObject(Object obj, ObjRef or) {
  83                         ITrackingHandler[] handlers = RegisteredHandlers;
  84                         for(int i = 0; i < handlers.Length; i++) {
  85                                 handlers[i].MarshaledObject (obj, or);
  86                         }
  87                 }
  88
  89                 internal static void NotifyUnmarshaledObject(Object obj, ObjRef or) {
  90                         ITrackingHandler[] handlers = RegisteredHandlers;
  91                         for(int i = 0; i < handlers.Length; i++) {
  92                                 handlers[i].UnmarshaledObject (obj, or);
  93                         }
  94                 }
  95
  96                 internal static void NotifyDisconnectedObject(Object obj) {
  97                         ITrackingHandler[] handlers = RegisteredHandlers;
  98                         for(int i = 0; i < handlers.Length; i++) {
  99                                 handlers[i].DisconnectedObject (obj);
 100                         }
 101                 }
 102         }
 103 }
 104