mcs/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         public class ClientSponsor : MarshalByRefObject, ISponsor
  40         {
  41                 TimeSpan renewal_time;
  42                 Hashtable registered_objects = new Hashtable ();
  43
  44                 public ClientSponsor ()
  45                 {
  46                         renewal_time = new TimeSpan (0, 2, 0); // default is 2 mins
  47                 }
  48
  49                 public ClientSponsor (TimeSpan time)
  50                 {
  51                         renewal_time = time;
  52                 }
  53
  54                 public TimeSpan RenewalTime {
  55                         get {
  56                                 return renewal_time;
  57                         }
  58
  59                         set {
  60                                 renewal_time = value;
  61                         }
  62                 }
  63
  64                 public void Close ()
  65                 {
  66                         foreach (MarshalByRefObject obj in registered_objects.Values)
  67                         {
  68                                 ILease lease = obj.GetLifetimeService () as ILease;
  69                                 lease.Unregister (this);
  70                         }
  71                         registered_objects.Clear ();
  72                 }
  73
  74                 ~ClientSponsor ()
  75                 {
  76                         Close ();
  77                 }
  78
  79                 public override object InitializeLifetimeService ()
  80                 {
  81                         return base.InitializeLifetimeService ();
  82                 }
  83
  84                 public bool Register (MarshalByRefObject obj)
  85                 {
  86                         if (registered_objects.ContainsKey (obj)) return false;
  87                         ILease lease = obj.GetLifetimeService () as ILease;
  88                         if (lease == null) return false;
  89                         lease.Register (this);
  90                         registered_objects.Add (obj,obj);
  91                         return true;
  92                 }
  93
  94                 public TimeSpan Renewal (ILease lease)
  95                 {
  96                         return renewal_time;
  97                 }
  98
  99                 public void Unregister (MarshalByRefObject obj)
 100                 {
 101                         if (!registered_objects.ContainsKey (obj)) return;
 102                         ILease lease = obj.GetLifetimeService () as ILease;
 103                         lease.Unregister (this);
 104                         registered_objects.Remove (obj);
 105                 }
 106         }
 107 }