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1 | using System; | |
2 | using System.Collections.Generic; | |
3 | using System.Diagnostics; | |
4 | using System.Threading; | |
5 | using System.Windows.Threading; | |
6 | ||
7 | namespace TestingConsoleApplication.Tests.ThreadedQueue | |
8 | { | |
9 | class ThreadedQueueTest | |
10 | { | |
11 | public ThreadedQueueTest() | |
12 | { | |
13 | Debug.WriteLine("App Thread ID: " + System.Threading.Thread.CurrentThread.ManagedThreadId); | |
14 | ||
15 | - | TaskQueue TaskQueue = new TaskQueue(); |
15 | + | TaskQueue taskQueue = new TaskQueue(); |
16 | - | QueueManager QueueManager = new QueueManager(TaskQueue); |
16 | + | QueueManager queueManager = new QueueManager(taskQueue); |
17 | ||
18 | // inter thread exchanger object | |
19 | - | InterThreadExchanger Exchanger = new InterThreadExchanger(); |
19 | + | InterThreadExchanger exchanger = new InterThreadExchanger(); |
20 | - | Exchanger.TaskQueue = TaskQueue; |
20 | + | exchanger.TaskQueue = taskQueue; |
21 | ||
22 | // create queue listening thread | |
23 | - | Thread ProcessingThread = new Thread(new Processor().ProcessingThreadBody); |
23 | + | Thread processingThread = new Thread(new Processor().ProcessingThreadBody); |
24 | - | ProcessingThread.Start(Exchanger); |
24 | + | processingThread.Start(exchanger); |
25 | ||
26 | // Create an inferred delegate that invokes methods for the timer. | |
27 | - | TimerCallback tcb = QueueManager.AddTask; |
27 | + | TimerCallback tcb = queueManager.AddTask; |
28 | ||
29 | Timer stateTimer = new Timer(tcb, null, 1000, 1000); | |
30 | Console.ReadLine(); | |
31 | ||
32 | stateTimer.Change(0, 0); | |
33 | ||
34 | - | Console.WriteLine("Final task queue status: " + TaskQueue.Count.ToString()); |
34 | + | Console.WriteLine("Final task queue status: " + taskQueue.Count.ToString()); |
35 | Debug.WriteLine("App Thread ID on end: " + System.Threading.Thread.CurrentThread.ManagedThreadId); | |
36 | ||
37 | Console.ReadLine(); | |
38 | } | |
39 | } | |
40 | ||
41 | /// <summary> | |
42 | /// Processing thread working object | |
43 | /// </summary> | |
44 | class Processor | |
45 | { | |
46 | - | private InterThreadExchanger Exchanger; |
46 | + | InterThreadExchanger exchanger; |
47 | - | private Dispatcher ProcessorDispatcher; |
47 | + | Dispatcher processorDispatcher; |
48 | ||
49 | /// <summary> | |
50 | /// Processing thread main method | |
51 | /// </summary> | |
52 | - | public void ProcessingThreadBody(object exchanger) |
52 | + | public void ProcessingThreadBody(object interThreadExchanger) |
53 | { | |
54 | - | ProcessorDispatcher = Dispatcher.CurrentDispatcher; |
54 | + | processorDispatcher = Dispatcher.CurrentDispatcher; |
55 | - | Exchanger = (InterThreadExchanger)exchanger; |
55 | + | exchanger = (InterThreadExchanger)interThreadExchanger; |
56 | - | Exchanger.TaskQueue.Filled += new TaskQueue.TaskQueueEventHandler(OnTaskQueueFilled); |
56 | + | exchanger.TaskQueue.Filled += new TaskQueue.TaskQueueFilledEventHandler(OnTaskQueueFilled); |
57 | ||
58 | Debug.WriteLine("Processor Thread ID: " + System.Threading.Thread.CurrentThread.ManagedThreadId.ToString()); | |
59 | - | Debug.WriteLine("Processor Dispatcher Thread ID: " + ProcessorDispatcher.Thread.ManagedThreadId.ToString()); |
59 | + | Debug.WriteLine("Processor Dispatcher Thread ID: " + processorDispatcher.Thread.ManagedThreadId.ToString()); |
60 | - | Debug.Assert(ProcessorDispatcher.Thread.ManagedThreadId == System.Threading.Thread.CurrentThread.ManagedThreadId, "Processor thread ID and its dispatcher thread ID are not equal!"); |
60 | + | Debug.Assert(processorDispatcher.Thread.ManagedThreadId == System.Threading.Thread.CurrentThread.ManagedThreadId, "Processor thread ID and its dispatcher thread ID are not equal!"); |
61 | } | |
62 | ||
63 | /// <summary> | |
64 | /// Queue filled event listener | |
65 | /// </summary> | |
66 | /// <param name="sender"></param> | |
67 | /// <param name="args"></param> | |
68 | - | private void OnTaskQueueFilled(object sender, EventArgs args) |
68 | + | void OnTaskQueueFilled(object sender, EventArgs args) |
69 | { | |
70 | Debug.WriteLine("Processor QueueListener caller Thread ID: " + System.Threading.Thread.CurrentThread.ManagedThreadId); | |
71 | - | Debug.WriteLine("Processor Dispatcher Thread ID: " + ProcessorDispatcher.Thread.ManagedThreadId.ToString()); |
71 | + | Debug.WriteLine("Processor Dispatcher Thread ID: " + processorDispatcher.Thread.ManagedThreadId.ToString()); |
72 | ||
73 | - | if (ProcessorDispatcher.CheckAccess()) |
73 | + | if (processorDispatcher.CheckAccess()) |
74 | { | |
75 | Debug.WriteLine("Processor calling ProcessQueue."); | |
76 | ProcessQueue(); | |
77 | } | |
78 | else | |
79 | { | |
80 | Debug.WriteLine("Processor invoking ProcessQueue."); | |
81 | - | ProcessorDispatcher.BeginInvoke(new Action(ProcessQueue), new object[] {null}); |
81 | + | processorDispatcher.BeginInvoke(new Action(ProcessQueue), new object[] {null}); |
82 | Debug.WriteLine("Processor invoked ProcessQueue."); | |
83 | } | |
84 | } | |
85 | ||
86 | - | private void ProcessQueue() |
86 | + | void ProcessQueue() |
87 | { | |
88 | Debug.WriteLine("ProcessQueue Thread ID: " + System.Threading.Thread.CurrentThread.ManagedThreadId); | |
89 | ||
90 | - | foreach (string Task in Exchanger.TaskQueue) |
90 | + | foreach (string Task in exchanger.TaskQueue) |
91 | { | |
92 | Console.WriteLine("Task in queue: " + Task); | |
93 | ||
94 | // todo: process task | |
95 | ||
96 | - | lock (Exchanger.TaskQueue) |
96 | + | lock (exchanger.TaskQueue) |
97 | { | |
98 | - | Exchanger.TaskQueue.Dequeue(); |
98 | + | exchanger.TaskQueue.Dequeue(); |
99 | } | |
100 | } | |
101 | } | |
102 | } | |
103 | ||
104 | /// <summary> | |
105 | /// Interthread communication object | |
106 | /// </summary> | |
107 | class InterThreadExchanger | |
108 | { | |
109 | - | private ConnectionStates ConnectionStateStatus = ConnectionStates.Ready; |
109 | + | ConnectionState connectionState = ConnectionState.Ready; |
110 | ||
111 | - | public enum ConnectionStates |
111 | + | public enum ConnectionState |
112 | { | |
113 | Ready, | |
114 | Broken | |
115 | } | |
116 | ||
117 | public TaskQueue TaskQueue { get; set; } | |
118 | - | public ConnectionStates ConnectionState |
118 | + | public ConnectionState DbConnectionState |
119 | { | |
120 | get | |
121 | { | |
122 | - | return ConnectionStateStatus; |
122 | + | return connectionState; |
123 | } | |
124 | set | |
125 | { | |
126 | - | if (ConnectionStateStatus != value) |
126 | + | if (connectionState != value) |
127 | { | |
128 | - | ConnectionStateStatus = value; |
128 | + | connectionState = value; |
129 | RaiseConnectionStateChangeEvent(); | |
130 | } | |
131 | } | |
132 | } | |
133 | ||
134 | public delegate void ConnectionStateChangeEventHandler(object sender, EventArgs args); | |
135 | public event ConnectionStateChangeEventHandler ConnectionStateChange; | |
136 | ||
137 | - | private void RaiseConnectionStateChangeEvent() |
137 | + | void RaiseConnectionStateChangeEvent() |
138 | { | |
139 | if (ConnectionStateChange != null) | |
140 | { | |
141 | ConnectionStateChange(this, new EventArgs()); | |
142 | } | |
143 | } | |
144 | } | |
145 | ||
146 | class QueueManager | |
147 | { | |
148 | - | private TaskQueue TaskQueue; |
148 | + | TaskQueue taskQueue; |
149 | ||
150 | public QueueManager(TaskQueue taskQueue) | |
151 | { | |
152 | - | TaskQueue = taskQueue; |
152 | + | this.taskQueue = taskQueue; |
153 | Console.WriteLine("Thread id (StatusChecker): " + System.Threading.Thread.CurrentThread.ManagedThreadId); | |
154 | } | |
155 | ||
156 | // This method is called by the timer delegate. | |
157 | public void AddTask(Object stateInfo) | |
158 | { | |
159 | Console.WriteLine("Thread id (Timer elapsed): " + System.Threading.Thread.CurrentThread.ManagedThreadId); | |
160 | ||
161 | - | lock (TaskQueue) |
161 | + | lock (taskQueue) |
162 | { | |
163 | - | TaskQueue.Enqueue("New task name"); |
163 | + | taskQueue.Enqueue("New task name"); |
164 | } | |
165 | ||
166 | - | Console.WriteLine("Task count: " + TaskQueue.Count.ToString()); |
166 | + | Console.WriteLine("Task count: " + taskQueue.Count.ToString()); |
167 | } | |
168 | } | |
169 | ||
170 | class TaskQueue : Queue<string> | |
171 | { | |
172 | - | private Object QueueLock = new Object(); |
172 | + | Object queueLock = new Object(); |
173 | ||
174 | public TaskQueue() | |
175 | { | |
176 | Console.WriteLine("Thread id (TaskQueue):" + System.Threading.Thread.CurrentThread.ManagedThreadId); | |
177 | } | |
178 | ||
179 | public new void Enqueue(string item) | |
180 | { | |
181 | // if task is already queued, skip adding | |
182 | if (!Contains(item)) | |
183 | { | |
184 | Console.WriteLine("Adding taks: " + item); | |
185 | - | lock (QueueLock) // thread safety |
185 | + | lock (queueLock) // thread safety |
186 | { | |
187 | base.Enqueue(item); | |
188 | } | |
189 | RaiseEvent(); | |
190 | } | |
191 | else | |
192 | { | |
193 | Console.WriteLine("Item already queued: " + item); | |
194 | } | |
195 | } | |
196 | ||
197 | - | private void RaiseEvent() |
197 | + | void RaiseEvent() |
198 | { | |
199 | if (Filled != null) | |
200 | { | |
201 | Filled(this, new EventArgs()); | |
202 | } | |
203 | } | |
204 | ||
205 | - | public delegate void TaskQueueEventHandler(object sender, EventArgs args); |
205 | + | public delegate void TaskQueueFilledEventHandler(object sender, EventArgs args); |
206 | - | public event TaskQueueEventHandler Filled; |
206 | + | public event TaskQueueFilledEventHandler Filled; |
207 | } | |
208 | } |