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1 eva 1 using System;
2 using System.Threading;
3  
4 namespace Amib.Threading.Internal
5 {
6 public abstract class WorkItemsGroupBase : IWorkItemsGroup
7 {
8 #region Private Fields
9  
10 /// <summary>
11 /// Contains the name of this instance of SmartThreadPool.
12 /// Can be changed by the user.
13 /// </summary>
14 private string _name = "WorkItemsGroupBase";
15  
16 public WorkItemsGroupBase()
17 {
18 IsIdle = true;
19 }
20  
21 #endregion
22  
23 #region IWorkItemsGroup Members
24  
25 #region Public Methods
26  
27 /// <summary>
28 /// Get/Set the name of the SmartThreadPool/WorkItemsGroup instance
29 /// </summary>
30 public string Name
31 {
32 get { return _name; }
33 set { _name = value; }
34 }
35  
36 #endregion
37  
38 #region Abstract Methods
39  
40 public abstract int Concurrency { get; set; }
41 public abstract int WaitingCallbacks { get; }
42 public abstract object[] GetStates();
43 public abstract WIGStartInfo WIGStartInfo { get; }
44 public abstract void Start();
45 public abstract void Cancel(bool abortExecution);
46 public abstract bool WaitForIdle(int millisecondsTimeout);
47 public abstract event WorkItemsGroupIdleHandler OnIdle;
48  
49 internal abstract void Enqueue(WorkItem workItem);
50 internal virtual void PreQueueWorkItem() { }
51  
52 #endregion
53  
54 #region Common Base Methods
55  
56 /// <summary>
57 /// Cancel all the work items.
58 /// Same as Cancel(false)
59 /// </summary>
60 public virtual void Cancel()
61 {
62 Cancel(false);
63 }
64  
65 /// <summary>
66 /// Wait for the SmartThreadPool/WorkItemsGroup to be idle
67 /// </summary>
68 public void WaitForIdle()
69 {
70 WaitForIdle(Timeout.Infinite);
71 }
72  
73 /// <summary>
74 /// Wait for the SmartThreadPool/WorkItemsGroup to be idle
75 /// </summary>
76 public bool WaitForIdle(TimeSpan timeout)
77 {
78 return WaitForIdle((int)timeout.TotalMilliseconds);
79 }
80  
81 /// <summary>
82 /// IsIdle is true when there are no work items running or queued.
83 /// </summary>
84 public bool IsIdle { get; protected set; }
85  
86 #endregion
87  
88 #region QueueWorkItem
89  
90 /// <summary>
91 /// Queue a work item
92 /// </summary>
93 /// <param name="callback">A callback to execute</param>
94 /// <returns>Returns a work item result</returns>
95 public IWorkItemResult QueueWorkItem(WorkItemCallback callback)
96 {
97 WorkItem workItem = WorkItemFactory.CreateWorkItem(this, WIGStartInfo, callback);
98 Enqueue(workItem);
99 return workItem.GetWorkItemResult();
100 }
101  
102 /// <summary>
103 /// Queue a work item
104 /// </summary>
105 /// <param name="callback">A callback to execute</param>
106 /// <param name="workItemPriority">The priority of the work item</param>
107 /// <returns>Returns a work item result</returns>
108 public IWorkItemResult QueueWorkItem(WorkItemCallback callback, WorkItemPriority workItemPriority)
109 {
110 PreQueueWorkItem();
111 WorkItem workItem = WorkItemFactory.CreateWorkItem(this, WIGStartInfo, callback, workItemPriority);
112 Enqueue(workItem);
113 return workItem.GetWorkItemResult();
114 }
115  
116 /// <summary>
117 /// Queue a work item
118 /// </summary>
119 /// <param name="workItemInfo">Work item info</param>
120 /// <param name="callback">A callback to execute</param>
121 /// <returns>Returns a work item result</returns>
122 public IWorkItemResult QueueWorkItem(WorkItemInfo workItemInfo, WorkItemCallback callback)
123 {
124 PreQueueWorkItem();
125 WorkItem workItem = WorkItemFactory.CreateWorkItem(this, WIGStartInfo, workItemInfo, callback);
126 Enqueue(workItem);
127 return workItem.GetWorkItemResult();
128 }
129  
130 /// <summary>
131 /// Queue a work item
132 /// </summary>
133 /// <param name="callback">A callback to execute</param>
134 /// <param name="state">
135 /// The context object of the work item. Used for passing arguments to the work item.
136 /// </param>
137 /// <returns>Returns a work item result</returns>
138 public IWorkItemResult QueueWorkItem(WorkItemCallback callback, object state)
139 {
140 WorkItem workItem = WorkItemFactory.CreateWorkItem(this, WIGStartInfo, callback, state);
141 Enqueue(workItem);
142 return workItem.GetWorkItemResult();
143 }
144  
145 /// <summary>
146 /// Queue a work item
147 /// </summary>
148 /// <param name="callback">A callback to execute</param>
149 /// <param name="state">
150 /// The context object of the work item. Used for passing arguments to the work item.
151 /// </param>
152 /// <param name="workItemPriority">The work item priority</param>
153 /// <returns>Returns a work item result</returns>
154 public IWorkItemResult QueueWorkItem(WorkItemCallback callback, object state, WorkItemPriority workItemPriority)
155 {
156 PreQueueWorkItem();
157 WorkItem workItem = WorkItemFactory.CreateWorkItem(this, WIGStartInfo, callback, state, workItemPriority);
158 Enqueue(workItem);
159 return workItem.GetWorkItemResult();
160 }
161  
162 /// <summary>
163 /// Queue a work item
164 /// </summary>
165 /// <param name="workItemInfo">Work item information</param>
166 /// <param name="callback">A callback to execute</param>
167 /// <param name="state">
168 /// The context object of the work item. Used for passing arguments to the work item.
169 /// </param>
170 /// <returns>Returns a work item result</returns>
171 public IWorkItemResult QueueWorkItem(WorkItemInfo workItemInfo, WorkItemCallback callback, object state)
172 {
173 PreQueueWorkItem();
174 WorkItem workItem = WorkItemFactory.CreateWorkItem(this, WIGStartInfo, workItemInfo, callback, state);
175 Enqueue(workItem);
176 return workItem.GetWorkItemResult();
177 }
178  
179 /// <summary>
180 /// Queue a work item
181 /// </summary>
182 /// <param name="callback">A callback to execute</param>
183 /// <param name="state">
184 /// The context object of the work item. Used for passing arguments to the work item.
185 /// </param>
186 /// <param name="postExecuteWorkItemCallback">
187 /// A delegate to call after the callback completion
188 /// </param>
189 /// <returns>Returns a work item result</returns>
190 public IWorkItemResult QueueWorkItem(
191 WorkItemCallback callback,
192 object state,
193 PostExecuteWorkItemCallback postExecuteWorkItemCallback)
194 {
195 PreQueueWorkItem();
196 WorkItem workItem = WorkItemFactory.CreateWorkItem(this, WIGStartInfo, callback, state, postExecuteWorkItemCallback);
197 Enqueue(workItem);
198 return workItem.GetWorkItemResult();
199 }
200  
201 /// <summary>
202 /// Queue a work item
203 /// </summary>
204 /// <param name="callback">A callback to execute</param>
205 /// <param name="state">
206 /// The context object of the work item. Used for passing arguments to the work item.
207 /// </param>
208 /// <param name="postExecuteWorkItemCallback">
209 /// A delegate to call after the callback completion
210 /// </param>
211 /// <param name="workItemPriority">The work item priority</param>
212 /// <returns>Returns a work item result</returns>
213 public IWorkItemResult QueueWorkItem(
214 WorkItemCallback callback,
215 object state,
216 PostExecuteWorkItemCallback postExecuteWorkItemCallback,
217 WorkItemPriority workItemPriority)
218 {
219 PreQueueWorkItem();
220 WorkItem workItem = WorkItemFactory.CreateWorkItem(this, WIGStartInfo, callback, state, postExecuteWorkItemCallback, workItemPriority);
221 Enqueue(workItem);
222 return workItem.GetWorkItemResult();
223 }
224  
225 /// <summary>
226 /// Queue a work item
227 /// </summary>
228 /// <param name="callback">A callback to execute</param>
229 /// <param name="state">
230 /// The context object of the work item. Used for passing arguments to the work item.
231 /// </param>
232 /// <param name="postExecuteWorkItemCallback">
233 /// A delegate to call after the callback completion
234 /// </param>
235 /// <param name="callToPostExecute">Indicates on which cases to call to the post execute callback</param>
236 /// <returns>Returns a work item result</returns>
237 public IWorkItemResult QueueWorkItem(
238 WorkItemCallback callback,
239 object state,
240 PostExecuteWorkItemCallback postExecuteWorkItemCallback,
241 CallToPostExecute callToPostExecute)
242 {
243 PreQueueWorkItem();
244 WorkItem workItem = WorkItemFactory.CreateWorkItem(this, WIGStartInfo, callback, state, postExecuteWorkItemCallback, callToPostExecute);
245 Enqueue(workItem);
246 return workItem.GetWorkItemResult();
247 }
248  
249 /// <summary>
250 /// Queue a work item
251 /// </summary>
252 /// <param name="callback">A callback to execute</param>
253 /// <param name="state">
254 /// The context object of the work item. Used for passing arguments to the work item.
255 /// </param>
256 /// <param name="postExecuteWorkItemCallback">
257 /// A delegate to call after the callback completion
258 /// </param>
259 /// <param name="callToPostExecute">Indicates on which cases to call to the post execute callback</param>
260 /// <param name="workItemPriority">The work item priority</param>
261 /// <returns>Returns a work item result</returns>
262 public IWorkItemResult QueueWorkItem(
263 WorkItemCallback callback,
264 object state,
265 PostExecuteWorkItemCallback postExecuteWorkItemCallback,
266 CallToPostExecute callToPostExecute,
267 WorkItemPriority workItemPriority)
268 {
269 PreQueueWorkItem();
270 WorkItem workItem = WorkItemFactory.CreateWorkItem(this, WIGStartInfo, callback, state, postExecuteWorkItemCallback, callToPostExecute, workItemPriority);
271 Enqueue(workItem);
272 return workItem.GetWorkItemResult();
273 }
274  
275 #endregion
276  
277 #region QueueWorkItem(Action<...>)
278  
279 public IWorkItemResult QueueWorkItem(Action action)
280 {
281 return QueueWorkItem (action, SmartThreadPool.DefaultWorkItemPriority);
282 }
283  
284 public IWorkItemResult QueueWorkItem (Action action, WorkItemPriority priority)
285 {
286 PreQueueWorkItem ();
287 WorkItem workItem = WorkItemFactory.CreateWorkItem (
288 this,
289 WIGStartInfo,
290 delegate
291 {
292 action.Invoke ();
293 return null;
294 }, priority);
295 Enqueue (workItem);
296 return workItem.GetWorkItemResult ();
297 }
298  
299 public IWorkItemResult QueueWorkItem<T>(Action<T> action, T arg)
300 {
301 return QueueWorkItem<T> (action, arg, SmartThreadPool.DefaultWorkItemPriority);
302 }
303  
304 public IWorkItemResult QueueWorkItem<T> (Action<T> action, T arg, WorkItemPriority priority)
305 {
306 PreQueueWorkItem ();
307 WorkItem workItem = WorkItemFactory.CreateWorkItem (
308 this,
309 WIGStartInfo,
310 state =>
311 {
312 action.Invoke (arg);
313 return null;
314 },
315 WIGStartInfo.FillStateWithArgs ? new object[] { arg } : null, priority);
316 Enqueue (workItem);
317 return workItem.GetWorkItemResult ();
318 }
319  
320 public IWorkItemResult QueueWorkItem<T1, T2>(Action<T1, T2> action, T1 arg1, T2 arg2)
321 {
322 return QueueWorkItem<T1, T2> (action, arg1, arg2, SmartThreadPool.DefaultWorkItemPriority);
323 }
324  
325 public IWorkItemResult QueueWorkItem<T1, T2> (Action<T1, T2> action, T1 arg1, T2 arg2, WorkItemPriority priority)
326 {
327 PreQueueWorkItem ();
328 WorkItem workItem = WorkItemFactory.CreateWorkItem (
329 this,
330 WIGStartInfo,
331 state =>
332 {
333 action.Invoke (arg1, arg2);
334 return null;
335 },
336 WIGStartInfo.FillStateWithArgs ? new object[] { arg1, arg2 } : null, priority);
337 Enqueue (workItem);
338 return workItem.GetWorkItemResult ();
339 }
340  
341 public IWorkItemResult QueueWorkItem<T1, T2, T3>(Action<T1, T2, T3> action, T1 arg1, T2 arg2, T3 arg3)
342 {
343 return QueueWorkItem<T1, T2, T3> (action, arg1, arg2, arg3, SmartThreadPool.DefaultWorkItemPriority);
344 ;
345 }
346  
347 public IWorkItemResult QueueWorkItem<T1, T2, T3> (Action<T1, T2, T3> action, T1 arg1, T2 arg2, T3 arg3, WorkItemPriority priority)
348 {
349 PreQueueWorkItem ();
350 WorkItem workItem = WorkItemFactory.CreateWorkItem (
351 this,
352 WIGStartInfo,
353 state =>
354 {
355 action.Invoke (arg1, arg2, arg3);
356 return null;
357 },
358 WIGStartInfo.FillStateWithArgs ? new object[] { arg1, arg2, arg3 } : null, priority);
359 Enqueue (workItem);
360 return workItem.GetWorkItemResult ();
361 }
362  
363 public IWorkItemResult QueueWorkItem<T1, T2, T3, T4>(
364 Action<T1, T2, T3, T4> action, T1 arg1, T2 arg2, T3 arg3, T4 arg4)
365 {
366 return QueueWorkItem<T1, T2, T3, T4> (action, arg1, arg2, arg3, arg4,
367 SmartThreadPool.DefaultWorkItemPriority);
368 }
369  
370 public IWorkItemResult QueueWorkItem<T1, T2, T3, T4> (
371 Action<T1, T2, T3, T4> action, T1 arg1, T2 arg2, T3 arg3, T4 arg4, WorkItemPriority priority)
372 {
373 PreQueueWorkItem ();
374 WorkItem workItem = WorkItemFactory.CreateWorkItem (
375 this,
376 WIGStartInfo,
377 state =>
378 {
379 action.Invoke (arg1, arg2, arg3, arg4);
380 return null;
381 },
382 WIGStartInfo.FillStateWithArgs ? new object[] { arg1, arg2, arg3, arg4 } : null, priority);
383 Enqueue (workItem);
384 return workItem.GetWorkItemResult ();
385 }
386  
387 #endregion
388  
389 #region QueueWorkItem(Func<...>)
390  
391 public IWorkItemResult<TResult> QueueWorkItem<TResult>(Func<TResult> func)
392 {
393 PreQueueWorkItem();
394 WorkItem workItem = WorkItemFactory.CreateWorkItem(
395 this,
396 WIGStartInfo,
397 state =>
398 {
399 return func.Invoke();
400 });
401 Enqueue(workItem);
402 return new WorkItemResultTWrapper<TResult>(workItem.GetWorkItemResult());
403 }
404  
405 public IWorkItemResult<TResult> QueueWorkItem<T, TResult>(Func<T, TResult> func, T arg)
406 {
407 PreQueueWorkItem();
408 WorkItem workItem = WorkItemFactory.CreateWorkItem(
409 this,
410 WIGStartInfo,
411 state =>
412 {
413 return func.Invoke(arg);
414 },
415 WIGStartInfo.FillStateWithArgs ? new object[] { arg } : null);
416 Enqueue(workItem);
417 return new WorkItemResultTWrapper<TResult>(workItem.GetWorkItemResult());
418 }
419  
420 public IWorkItemResult<TResult> QueueWorkItem<T1, T2, TResult>(Func<T1, T2, TResult> func, T1 arg1, T2 arg2)
421 {
422 PreQueueWorkItem();
423 WorkItem workItem = WorkItemFactory.CreateWorkItem(
424 this,
425 WIGStartInfo,
426 state =>
427 {
428 return func.Invoke(arg1, arg2);
429 },
430 WIGStartInfo.FillStateWithArgs ? new object[] { arg1, arg2 } : null);
431 Enqueue(workItem);
432 return new WorkItemResultTWrapper<TResult>(workItem.GetWorkItemResult());
433 }
434  
435 public IWorkItemResult<TResult> QueueWorkItem<T1, T2, T3, TResult>(
436 Func<T1, T2, T3, TResult> func, T1 arg1, T2 arg2, T3 arg3)
437 {
438 PreQueueWorkItem();
439 WorkItem workItem = WorkItemFactory.CreateWorkItem(
440 this,
441 WIGStartInfo,
442 state =>
443 {
444 return func.Invoke(arg1, arg2, arg3);
445 },
446 WIGStartInfo.FillStateWithArgs ? new object[] { arg1, arg2, arg3 } : null);
447 Enqueue(workItem);
448 return new WorkItemResultTWrapper<TResult>(workItem.GetWorkItemResult());
449 }
450  
451 public IWorkItemResult<TResult> QueueWorkItem<T1, T2, T3, T4, TResult>(
452 Func<T1, T2, T3, T4, TResult> func, T1 arg1, T2 arg2, T3 arg3, T4 arg4)
453 {
454 PreQueueWorkItem();
455 WorkItem workItem = WorkItemFactory.CreateWorkItem(
456 this,
457 WIGStartInfo,
458 state =>
459 {
460 return func.Invoke(arg1, arg2, arg3, arg4);
461 },
462 WIGStartInfo.FillStateWithArgs ? new object[] { arg1, arg2, arg3, arg4 } : null);
463 Enqueue(workItem);
464 return new WorkItemResultTWrapper<TResult>(workItem.GetWorkItemResult());
465 }
466  
467 #endregion
468  
469 #endregion
470 }
471 }