class/corlib/System.Runtime.Remoting.Lifetime/ClientSponsor.cs

   1 //
   2 // System.Runtime.Remoting.Lifetime.ClientSponsor.cs
   3 //
   4 // Author: Duncan Mak  (duncan@ximian.com)
   5 //         Lluis Sanchez Gual (lluis@ximian.com)
   6 //
   7 // 2002 (C) Copyright. Ximian, Inc.
   8 //
   9
  10 //
  11 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System;
  34 using System.Collections;
  35 using System.Runtime.Remoting.Lifetime;
  36
  37 namespace System.Runtime.Remoting.Lifetime {
  38
  39         [System.Runtime.InteropServices.ComVisible (true)]
  40         public class ClientSponsor : MarshalByRefObject, ISponsor
  41         {
  42                 TimeSpan renewal_time;
  43                 Hashtable registered_objects = new Hashtable ();
  44
  45                 public ClientSponsor ()
  46                 {
  47                         renewal_time = new TimeSpan (0, 2, 0); // default is 2 mins
  48                 }
  49
  50                 public ClientSponsor (TimeSpan renewalTime)
  51                 {
  52                         renewal_time = renewalTime;
  53                 }
  54
  55                 public TimeSpan RenewalTime {
  56                         get {
  57                                 return renewal_time;
  58                         }
  59
  60                         set {
  61                                 renewal_time = value;
  62                         }
  63                 }
  64
  65                 public void Close ()
  66                 {
  67                         foreach (MarshalByRefObject obj in registered_objects.Values)
  68                         {
  69                                 ILease lease = obj.GetLifetimeService () as ILease;
  70                                 lease.Unregister (this);
  71                         }
  72                         registered_objects.Clear ();
  73                 }
  74
  75                 ~ClientSponsor ()
  76                 {
  77                         Close ();
  78                 }
  79
  80                 public override object InitializeLifetimeService ()
  81                 {
  82                         return base.InitializeLifetimeService ();
  83                 }
  84
  85                 public bool Register (MarshalByRefObject obj)
  86                 {
  87                         if (registered_objects.ContainsKey (obj)) return false;
  88                         ILease lease = obj.GetLifetimeService () as ILease;
  89                         if (lease == null) return false;
  90                         lease.Register (this);
  91                         registered_objects.Add (obj,obj);
  92                         return true;
  93                 }
  94
  95                 public TimeSpan Renewal (ILease lease)
  96                 {
  97                         return renewal_time;
  98                 }
  99
 100                 public void Unregister (MarshalByRefObject obj)
 101                 {
 102                         if (!registered_objects.ContainsKey (obj)) return;
 103                         ILease lease = obj.GetLifetimeService () as ILease;
 104                         lease.Unregister (this);
 105                         registered_objects.Remove (obj);
 106                 }
 107         }
 108 }