mcs/class/System/System.Net/ListenerAsyncResult.cs

   1 //
   2 // System.Net.ListenerAsyncResult
   3 //
   4 // Authors:
   5 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   6 //
   7 // Copyright (c) 2005 Ximian, Inc (http://www.ximian.com)
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30 #if NET_2_0
  31 using System.Threading;
  32 namespace System.Net {
  33         class ListenerAsyncResult : IAsyncResult {
  34                 ManualResetEvent handle;
  35                 bool synch;
  36                 bool completed;
  37                 AsyncCallback cb;
  38                 object state;
  39                 Exception exception;
  40                 HttpListenerContext context;
  41                 object locker = new object ();
  42
  43                 public ListenerAsyncResult (AsyncCallback cb, object state)
  44                 {
  45                         this.cb = cb;
  46                         this.state = state;
  47                 }
  48
  49                 internal void Complete (string error)
  50                 {
  51                         //FIXME: error_code?
  52                         exception = new HttpListenerException (0, error);
  53                         lock (locker) {
  54                                 completed = true;
  55                                 if (handle != null)
  56                                         handle.Set ();
  57
  58                                 if (cb != null)
  59                                         ThreadPool.QueueUserWorkItem (InvokeCallback, this);
  60                         }
  61                 }
  62
  63                 static void InvokeCallback (object o)
  64                 {
  65                         ListenerAsyncResult ares = (ListenerAsyncResult) o;
  66                         ares.cb (ares);
  67                 }
  68
  69                 internal void Complete (HttpListenerContext context)
  70                 {
  71                         Complete (context, false);
  72                 }
  73
  74                 internal void Complete (HttpListenerContext context, bool synch)
  75                 {
  76                         this.synch = synch;
  77                         this.context = context;
  78                         lock (locker) {
  79                                 completed = true;
  80                                 if (handle != null)
  81                                         handle.Set ();
  82
  83                                 if (cb != null)
  84                                         ThreadPool.QueueUserWorkItem (InvokeCallback, this);
  85                         }
  86                 }
  87
  88                 internal HttpListenerContext GetContext ()
  89                 {
  90                         if (exception != null)
  91                                 throw exception;
  92
  93                         return context;
  94                 }
  95
  96                 public object AsyncState {
  97                         get { return state; }
  98                 }
  99
 100                 public WaitHandle AsyncWaitHandle {
 101                         get {
 102                                 lock (locker) {
 103                                         if (handle == null)
 104                                                 handle = new ManualResetEvent (completed);
 105                                 }
 106
 107                                 return handle;
 108                         }
 109                 }
 110
 111                 public bool CompletedSynchronously {
 112                         get { return synch; }
 113                 }
 114
 115                 public bool IsCompleted {
 116                         get {
 117                                 lock (locker) {
 118                                         return completed;
 119                                 }
 120                         }
 121                 }
 122         }
 123 }
 124 #endif
 125