mcs/class/System.Web.Services/System.Web.Services.Protocols/WebClientAsyncResult.cs

   1 // \r
   2 // System.Web.Services.Protocols.WebClientAsyncResult.cs\r
   3 //\r
   4 // Author:\r
   5 //   Tim Coleman (tim@timcoleman.com)\r
   6 //   Lluis Sanchez Gual (lluis@ximian.com)\r
   7 //\r
   8 // Copyright (C) Tim Coleman, 2002\r
   9 //\r
  10 \r
  11 using System.Net;\r
  12 using System.Threading;\r
  13 \r
  14 namespace System.Web.Services.Protocols {\r
  15         public class WebClientAsyncResult : IAsyncResult {\r
  16 \r
  17                 #region Fields\r
  18 \r
  19                 AsyncCallback _callback;\r
  20                 object _asyncState;\r
  21 \r
  22                 bool _completedSynchronously;\r
  23                 bool _done;\r
  24                 ManualResetEvent _waitHandle;\r
  25                 \r
  26                 internal SoapClientMessage Message;\r
  27                 internal SoapExtension[] Extensions;\r
  28 \r
  29                 internal object Result;\r
  30                 internal Exception Exception;\r
  31                 internal WebRequest Request;\r
  32                         \r
  33                 #endregion // Fields\r
  34 \r
  35                 #region Constructors \r
  36 \r
  37                 internal WebClientAsyncResult (WebRequest request, AsyncCallback callback, object asyncState)\r
  38                 {\r
  39                         _callback = callback; \r
  40                         Request = request;\r
  41                         _asyncState = asyncState;\r
  42                 }\r
  43 \r
  44                 #endregion // Constructors\r
  45 \r
  46                 #region Properties\r
  47 \r
  48                 public object AsyncState {\r
  49                         get { return _asyncState; }\r
  50                 }\r
  51 \r
  52                 public WaitHandle AsyncWaitHandle \r
  53                 {\r
  54                         get\r
  55                         {\r
  56                                 lock (this) {\r
  57                                         if (_waitHandle != null) return _waitHandle;\r
  58                                         _waitHandle = new ManualResetEvent (_done);\r
  59                                         return _waitHandle;\r
  60                                 }\r
  61                         }\r
  62                 }\r
  63 \r
  64                 public bool CompletedSynchronously \r
  65                 {\r
  66                         get { return _completedSynchronously; }\r
  67                 }\r
  68 \r
  69                 public bool IsCompleted \r
  70                 {\r
  71                         get { lock (this) { return _done; } }\r
  72                 }\r
  73 \r
  74                 #endregion // Properties\r
  75 \r
  76                 #region Methods\r
  77 \r
  78                 public void Abort ()\r
  79                 {\r
  80                         Request.Abort ();\r
  81                 }\r
  82 \r
  83                 internal void SetCompleted (object result, Exception exception, bool async)\r
  84                 {\r
  85                         lock (this)\r
  86                         {\r
  87                                 Exception = exception;\r
  88                                 Result = result;\r
  89                                 _done = true;\r
  90                                 _completedSynchronously = async;\r
  91                                 if (_waitHandle != null) _waitHandle.Set ();\r
  92                                 Monitor.PulseAll (this);\r
  93                         }\r
  94                         if (_callback != null) _callback (this);\r
  95                 }\r
  96 \r
  97                 internal void WaitForComplete ()\r
  98                 {\r
  99                         lock (this)\r
 100                         {\r
 101                                 Monitor.Wait (this);\r
 102                         }\r
 103                 }\r
 104 \r
 105                 #endregion // Methods\r
 106         }\r
 107 }