use MOONLIGHT symbol
[mono.git] / mcs / class / corlib / System.IO / StreamAsyncResult.cs
1 //
2 // System.IO/StreamAsyncResult.cs
3 //
4 // Authors:
5 //   Gonzalo Paniagua Javier (gonzalo@ximian.com)
6 //
7 // (c) 2004 Novell, Inc. (http://www.novell.com)
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.Threading;
34
35 namespace System.IO
36 {
37         class StreamAsyncResult : IAsyncResult {
38                 object state;
39                 bool completed;
40                 bool done;
41                 Exception exc;
42                 int nbytes = -1;
43                 ManualResetEvent wh;
44
45                 public StreamAsyncResult (object state)
46                 {
47                         this.state = state;
48                 }
49
50                 public void SetComplete (Exception e)
51                 {
52                         exc = e;
53                         completed = true;
54                         lock (this) {
55                                 if (wh != null)
56                                         wh.Set ();
57                         }
58                 }
59                 
60                 public void SetComplete (Exception e, int nbytes)
61                 {
62                         this.nbytes = nbytes;
63                         SetComplete (e);
64                 }
65
66                 public object AsyncState {
67                         get { return state; }
68                 }
69
70                 public WaitHandle AsyncWaitHandle {
71                         get {
72                                 lock (this) {
73                                         if (wh == null)
74                                                 wh = new ManualResetEvent (completed);
75
76                                         return wh;
77                                 }
78                         }
79                 }
80
81                 public virtual bool CompletedSynchronously {
82                         get { return true; }
83                 }
84
85                 public bool IsCompleted {
86                         get { return completed; }
87                 }
88
89                 public Exception Exception {
90                         get { return exc; }
91                 }
92
93                 public int NBytes {
94                         get { return nbytes; }
95                 }
96
97                 public bool Done {
98                         get { return done; }
99                         set { done = value; }
100                 }
101         }
102 }
103