mcs/class/Mono.Data.Tds/Mono.Data.Tds.Protocol/TdsAsyncResult.cs

   1 //
   2 // Mono.Data.Tds.Protocol.TdsAsyncResult.cs
   3 //
   4 // Author:
   5 //   T Sureshkumar <tsureshkumar@novell.com>
   6 //   Ankit Jain <radical@corewars.org>
   7
   8 //
   9 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  10 //
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32
  33 #if NET_2_0
  34 using System;
  35 using System.Threading;
  36
  37 namespace Mono.Data.Tds.Protocol
  38 {
  39         internal class TdsAsyncResult : IAsyncResult
  40         {
  41                 private TdsAsyncState _tdsState;
  42                 private WaitHandle _waitHandle;
  43                 private bool _completed = false;
  44                 private bool _completedSyncly = false;
  45                 private AsyncCallback _userCallback;
  46                 private object _retValue;
  47                 private Exception _exception = null;
  48
  49                 public TdsAsyncResult (AsyncCallback userCallback, TdsAsyncState tdsState)
  50                 {
  51                         _tdsState = tdsState;
  52                         _userCallback = userCallback;
  53                         _waitHandle = new ManualResetEvent (false);
  54                 }
  55
  56                 public TdsAsyncResult (AsyncCallback userCallback, object state)
  57                 {
  58                         _tdsState = new TdsAsyncState (state);
  59                         _userCallback = userCallback;
  60                         _waitHandle = new ManualResetEvent (false);
  61                 }
  62
  63
  64                 public object AsyncState
  65                 {
  66                         get {   return _tdsState.UserState; }
  67                 }
  68
  69                 internal TdsAsyncState TdsAsyncState
  70                 {
  71                         get {   return _tdsState; }
  72                 }
  73
  74                 public WaitHandle AsyncWaitHandle
  75                 {
  76                         get { return _waitHandle; }
  77
  78                 }
  79
  80                 public bool IsCompleted
  81                 {
  82                         get {   return _completed; }
  83                 }
  84
  85                 public bool IsCompletedWithException
  86                 {
  87                         get {   return _exception != null; }
  88                 }
  89
  90                 public Exception Exception
  91                 {
  92                         get {   return _exception; }
  93                 }
  94
  95                 public bool CompletedSynchronously
  96                 {
  97                         get {   return _completedSyncly; }
  98                 }
  99
 100                 internal object ReturnValue
 101                 {
 102                         get {   return _retValue; }
 103                         set {   _retValue = value; }
 104                 }
 105
 106                 internal void MarkComplete ()
 107                 {
 108                         _completed = true;
 109                         _exception = null;
 110                         ((ManualResetEvent)_waitHandle).Set ();
 111
 112                         if (_userCallback != null)
 113                                 _userCallback (this);
 114                 }
 115
 116                 internal void MarkComplete (Exception e)
 117                 {
 118                         _completed = true;
 119                         _exception = e;
 120                         ((ManualResetEvent)_waitHandle).Set ();
 121
 122                         if (_userCallback != null)
 123                                 _userCallback (this);
 124                 }
 125         }
 126 }
 127
 128 #endif // NET_2_0