|
1 /* |
|
2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
|
3 * All rights reserved. |
|
4 * This component and the accompanying materials are made available |
|
5 * under the terms of "Eclipse Public License v1.0" |
|
6 * which accompanies this distribution, and is available |
|
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
8 * |
|
9 * Initial Contributors: |
|
10 * Nokia Corporation - initial contribution. |
|
11 * |
|
12 * Contributors: |
|
13 * |
|
14 * Description: |
|
15 * |
|
16 */ |
|
17 using System; |
|
18 using System.IO; |
|
19 using System.Text; |
|
20 using System.Threading; |
|
21 using System.Collections; |
|
22 using SymbianUtils.Tracer; |
|
23 |
|
24 namespace SymbianUtils.TextUtilities.Readers.Types.Array |
|
25 { |
|
26 public interface AsyncQueueObjectSupplier<TType> |
|
27 { |
|
28 #region AsyncQueueObjectSupplier interface declaration |
|
29 int QueueLength { get; } |
|
30 TType Dequeue(); |
|
31 #endregion |
|
32 } |
|
33 |
|
34 public abstract class AsyncQueueReader<TType> : AsyncReaderBase |
|
35 { |
|
36 #region Construct & destruct |
|
37 public AsyncQueueReader( AsyncQueueObjectSupplier<TType> aObjectSupplier ) |
|
38 : this( aObjectSupplier, null ) |
|
39 { |
|
40 } |
|
41 |
|
42 public AsyncQueueReader( AsyncQueueObjectSupplier<TType> aObjectSupplier, ITracer aTracer ) |
|
43 : base( aTracer ) |
|
44 { |
|
45 iObjectSupplier = aObjectSupplier; |
|
46 } |
|
47 #endregion |
|
48 |
|
49 #region Abstract reading framework |
|
50 protected abstract void HandleObject( TType aObject, int aIndex, int aCount ); |
|
51 #endregion |
|
52 |
|
53 #region From AsyncReaderBase |
|
54 protected override long Size |
|
55 { |
|
56 get |
|
57 { |
|
58 long size = 0; |
|
59 // |
|
60 lock( this ) |
|
61 { |
|
62 size = iObjectSupplier.QueueLength; |
|
63 } |
|
64 // |
|
65 return size; |
|
66 } |
|
67 } |
|
68 |
|
69 protected override long Position |
|
70 { |
|
71 get |
|
72 { |
|
73 long position = 0; |
|
74 // |
|
75 lock( this ) |
|
76 { |
|
77 position = iCurrentIndex; |
|
78 } |
|
79 // |
|
80 return position; |
|
81 } |
|
82 } |
|
83 #endregion |
|
84 |
|
85 #region Properties |
|
86 public int CurrentIndex |
|
87 { |
|
88 get |
|
89 { |
|
90 lock( this ) |
|
91 { |
|
92 return iCurrentIndex; |
|
93 } |
|
94 } |
|
95 } |
|
96 |
|
97 protected AsyncQueueObjectSupplier<TType> ObjectSupplier |
|
98 { |
|
99 get { return iObjectSupplier; } |
|
100 } |
|
101 #endregion |
|
102 |
|
103 #region Internal methods |
|
104 protected override void PerformOperation() |
|
105 { |
|
106 int count = 0; |
|
107 lock( this ) |
|
108 { |
|
109 count = iObjectSupplier.QueueLength; |
|
110 iCurrentIndex = -1; |
|
111 } |
|
112 |
|
113 System.DateTime tenPercentTime = DateTime.Now; |
|
114 |
|
115 int newProgress = 0; |
|
116 int oldProgress = 0; |
|
117 while( CurrentIndex < count - 1 ) |
|
118 { |
|
119 lock( this ) |
|
120 { |
|
121 ++iCurrentIndex; |
|
122 } |
|
123 // |
|
124 lock( this ) |
|
125 { |
|
126 TType obj = iObjectSupplier.Dequeue(); |
|
127 HandleObject( obj, iCurrentIndex-1, count ); |
|
128 newProgress = Progress; |
|
129 } |
|
130 // |
|
131 if ( newProgress != oldProgress ) |
|
132 { |
|
133 #if DEBUG |
|
134 if ( newProgress > 0 && ( newProgress % 10 ) == 0 ) |
|
135 { |
|
136 System.DateTime now = DateTime.Now; |
|
137 long intermediateTickDuration = ( ( now.Ticks - tenPercentTime.Ticks ) / 100 ); |
|
138 System.Diagnostics.Debug.WriteLine( newProgress.ToString( "d2" ) + " % COMPLETE - " + intermediateTickDuration.ToString( "d12" ) ); |
|
139 tenPercentTime = now; |
|
140 } |
|
141 #endif |
|
142 NotifyEvent( TEvent.EReadingProgress ); |
|
143 oldProgress = newProgress; |
|
144 } |
|
145 } |
|
146 |
|
147 System.DateTime endTime = DateTime.Now; |
|
148 long tickDuration = ( ( endTime.Ticks - iOperationStartTime.Ticks ) / 100 ); |
|
149 System.Diagnostics.Debug.WriteLine( "QUEUE READ COMPLETE - " + tickDuration.ToString( "d12" ) ); |
|
150 } |
|
151 #endregion |
|
152 |
|
153 #region Data members |
|
154 private int iCurrentIndex = -1; |
|
155 private readonly AsyncQueueObjectSupplier<TType> iObjectSupplier; |
|
156 #endregion |
|
157 } |
|
158 } |