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-rw-r--r--ThirdParty/SmartThreadPool/SmartThreadPool.cs1643
1 files changed, 824 insertions, 819 deletions
diff --git a/ThirdParty/SmartThreadPool/SmartThreadPool.cs b/ThirdParty/SmartThreadPool/SmartThreadPool.cs
index 615518e..7cc7fbf 100644
--- a/ThirdParty/SmartThreadPool/SmartThreadPool.cs
+++ b/ThirdParty/SmartThreadPool/SmartThreadPool.cs
@@ -3,7 +3,7 @@
3// Smart Thread Pool 3// Smart Thread Pool
4// 7 Aug 2004 - Initial release 4// 7 Aug 2004 - Initial release
5// 5//
6// 14 Sep 2004 - Bug fixes 6// 14 Sep 2004 - Bug fixes
7// 7//
8// 15 Oct 2004 - Added new features 8// 15 Oct 2004 - Added new features
9// - Work items return result. 9// - Work items return result.
@@ -18,13 +18,13 @@
18// - Added finalizers. 18// - Added finalizers.
19// - Changed Exceptions so they are serializable. 19// - Changed Exceptions so they are serializable.
20// - Fixed the bug in one of the SmartThreadPool constructors. 20// - Fixed the bug in one of the SmartThreadPool constructors.
21// - Changed the SmartThreadPool.WaitAll() so it will support any number of waiters. 21// - Changed the SmartThreadPool.WaitAll() so it will support any number of waiters.
22// The SmartThreadPool.WaitAny() is still limited by the .NET Framework. 22// The SmartThreadPool.WaitAny() is still limited by the .NET Framework.
23// - Added PostExecute with options on which cases to call it. 23// - Added PostExecute with options on which cases to call it.
24// - Added option to dispose of the state objects. 24// - Added option to dispose of the state objects.
25// - Added a WaitForIdle() method that waits until the work items queue is empty. 25// - Added a WaitForIdle() method that waits until the work items queue is empty.
26// - Added an STPStartInfo class for the initialization of the thread pool. 26// - Added an STPStartInfo class for the initialization of the thread pool.
27// - Changed exception handling so if a work item throws an exception it 27// - Changed exception handling so if a work item throws an exception it
28// is rethrown at GetResult(), rather then firing an UnhandledException event. 28// is rethrown at GetResult(), rather then firing an UnhandledException event.
29// Note that PostExecute exception are always ignored. 29// Note that PostExecute exception are always ignored.
30// 30//
@@ -32,10 +32,10 @@
32// - Fixed lost of work items bug 32// - Fixed lost of work items bug
33// 33//
34// 3 Jul 2005: Changes. 34// 3 Jul 2005: Changes.
35// - Fixed bug where Enqueue() throws an exception because PopWaiter() returned null, hardly reconstructed. 35// - Fixed bug where Enqueue() throws an exception because PopWaiter() returned null, hardly reconstructed.
36// 36//
37// 16 Aug 2005: Changes. 37// 16 Aug 2005: Changes.
38// - Fixed bug where the InUseThreads becomes negative when canceling work items. 38// - Fixed bug where the InUseThreads becomes negative when canceling work items.
39// 39//
40// 31 Jan 2006 - Changes: 40// 31 Jan 2006 - Changes:
41// - Added work items priority 41// - Added work items priority
@@ -45,7 +45,7 @@
45// - Changed SmartThreadPool.WaitAll() behavior so when it gets empty array 45// - Changed SmartThreadPool.WaitAll() behavior so when it gets empty array
46// it returns true rather then throwing an exception. 46// it returns true rather then throwing an exception.
47// - Added option to start the STP and the WIG as suspended 47// - Added option to start the STP and the WIG as suspended
48// - Exception behavior changed, the real exception is returned by an 48// - Exception behavior changed, the real exception is returned by an
49// inner exception 49// inner exception
50// - Added option to keep the Http context of the caller thread. (Thanks to Steven T.) 50// - Added option to keep the Http context of the caller thread. (Thanks to Steven T.)
51// - Added performance counters 51// - Added performance counters
@@ -54,17 +54,17 @@
54// 13 Feb 2006 - Changes: 54// 13 Feb 2006 - Changes:
55// - Added a call to the dispose of the Performance Counter so 55// - Added a call to the dispose of the Performance Counter so
56// their won't be a Performance Counter leak. 56// their won't be a Performance Counter leak.
57// - Added exception catch in case the Performance Counters cannot 57// - Added exception catch in case the Performance Counters cannot
58// be created. 58// be created.
59// 59//
60// 17 May 2008 - Changes: 60// 17 May 2008 - Changes:
61// - Changed the dispose behavior and removed the Finalizers. 61// - Changed the dispose behavior and removed the Finalizers.
62// - Enabled the change of the MaxThreads and MinThreads at run time. 62// - Enabled the change of the MaxThreads and MinThreads at run time.
63// - Enabled the change of the Concurrency of a IWorkItemsGroup at run 63// - Enabled the change of the Concurrency of a IWorkItemsGroup at run
64// time If the IWorkItemsGroup is a SmartThreadPool then the Concurrency 64// time If the IWorkItemsGroup is a SmartThreadPool then the Concurrency
65// refers to the MaxThreads. 65// refers to the MaxThreads.
66// - Improved the cancel behavior. 66// - Improved the cancel behavior.
67// - Added events for thread creation and termination. 67// - Added events for thread creation and termination.
68// - Fixed the HttpContext context capture. 68// - Fixed the HttpContext context capture.
69// - Changed internal collections so they use generic collections 69// - Changed internal collections so they use generic collections
70// - Added IsIdle flag to the SmartThreadPool and IWorkItemsGroup 70// - Added IsIdle flag to the SmartThreadPool and IWorkItemsGroup
@@ -83,7 +83,7 @@
83// 83//
84// 20 August 2012 - Changes: 84// 20 August 2012 - Changes:
85// - Added set name to threads 85// - Added set name to threads
86// - Fixed the WorkItemsQueue.Dequeue. 86// - Fixed the WorkItemsQueue.Dequeue.
87// Replaced while (!Monitor.TryEnter(this)); with lock(this) { ... } 87// Replaced while (!Monitor.TryEnter(this)); with lock(this) { ... }
88// - Fixed SmartThreadPool.Pipe 88// - Fixed SmartThreadPool.Pipe
89// - Added IsBackground option to threads 89// - Added IsBackground option to threads
@@ -92,7 +92,7 @@
92// 92//
93// 24 August 2012 - Changes: 93// 24 August 2012 - Changes:
94// - Enabled cancel abort after cancel. See: http://smartthreadpool.codeplex.com/discussions/345937 by alecswan 94// - Enabled cancel abort after cancel. See: http://smartthreadpool.codeplex.com/discussions/345937 by alecswan
95// - Added option to set MaxStackSize of threads 95// - Added option to set MaxStackSize of threads
96 96
97#endregion 97#endregion
98 98
@@ -108,77 +108,77 @@ using Amib.Threading.Internal;
108 108
109namespace Amib.Threading 109namespace Amib.Threading
110{ 110{
111 #region SmartThreadPool class 111 #region SmartThreadPool class
112 /// <summary> 112 /// <summary>
113 /// Smart thread pool class. 113 /// Smart thread pool class.
114 /// </summary> 114 /// </summary>
115 public partial class SmartThreadPool : WorkItemsGroupBase, IDisposable 115 public partial class SmartThreadPool : WorkItemsGroupBase, IDisposable
116 { 116 {
117 #region Public Default Constants 117 #region Public Default Constants
118 118
119 /// <summary> 119 /// <summary>
120 /// Default minimum number of threads the thread pool contains. (0) 120 /// Default minimum number of threads the thread pool contains. (0)
121 /// </summary> 121 /// </summary>
122 public const int DefaultMinWorkerThreads = 0; 122 public const int DefaultMinWorkerThreads = 0;
123 123
124 /// <summary> 124 /// <summary>
125 /// Default maximum number of threads the thread pool contains. (25) 125 /// Default maximum number of threads the thread pool contains. (25)
126 /// </summary> 126 /// </summary>
127 public const int DefaultMaxWorkerThreads = 25; 127 public const int DefaultMaxWorkerThreads = 25;
128 128
129 /// <summary> 129 /// <summary>
130 /// Default idle timeout in milliseconds. (One minute) 130 /// Default idle timeout in milliseconds. (One minute)
131 /// </summary> 131 /// </summary>
132 public const int DefaultIdleTimeout = 60*1000; // One minute 132 public const int DefaultIdleTimeout = 60*1000; // One minute
133 133
134 /// <summary> 134 /// <summary>
135 /// Indicate to copy the security context of the caller and then use it in the call. (false) 135 /// Indicate to copy the security context of the caller and then use it in the call. (false)
136 /// </summary> 136 /// </summary>
137 public const bool DefaultUseCallerCallContext = false; 137 public const bool DefaultUseCallerCallContext = false;
138 138
139 /// <summary> 139 /// <summary>
140 /// Indicate to copy the HTTP context of the caller and then use it in the call. (false) 140 /// Indicate to copy the HTTP context of the caller and then use it in the call. (false)
141 /// </summary> 141 /// </summary>
142 public const bool DefaultUseCallerHttpContext = false; 142 public const bool DefaultUseCallerHttpContext = false;
143 143
144 /// <summary> 144 /// <summary>
145 /// Indicate to dispose of the state objects if they support the IDispose interface. (false) 145 /// Indicate to dispose of the state objects if they support the IDispose interface. (false)
146 /// </summary> 146 /// </summary>
147 public const bool DefaultDisposeOfStateObjects = false; 147 public const bool DefaultDisposeOfStateObjects = false;
148 148
149 /// <summary> 149 /// <summary>
150 /// The default option to run the post execute (CallToPostExecute.Always) 150 /// The default option to run the post execute (CallToPostExecute.Always)
151 /// </summary> 151 /// </summary>
152 public const CallToPostExecute DefaultCallToPostExecute = CallToPostExecute.Always; 152 public const CallToPostExecute DefaultCallToPostExecute = CallToPostExecute.Always;
153 153
154 /// <summary> 154 /// <summary>
155 /// The default post execute method to run. (None) 155 /// The default post execute method to run. (None)
156 /// When null it means not to call it. 156 /// When null it means not to call it.
157 /// </summary> 157 /// </summary>
158 public static readonly PostExecuteWorkItemCallback DefaultPostExecuteWorkItemCallback; 158 public static readonly PostExecuteWorkItemCallback DefaultPostExecuteWorkItemCallback;
159 159
160 /// <summary> 160 /// <summary>
161 /// The default work item priority (WorkItemPriority.Normal) 161 /// The default work item priority (WorkItemPriority.Normal)
162 /// </summary> 162 /// </summary>
163 public const WorkItemPriority DefaultWorkItemPriority = WorkItemPriority.Normal; 163 public const WorkItemPriority DefaultWorkItemPriority = WorkItemPriority.Normal;
164 164
165 /// <summary> 165 /// <summary>
166 /// The default is to work on work items as soon as they arrive 166 /// The default is to work on work items as soon as they arrive
167 /// and not to wait for the start. (false) 167 /// and not to wait for the start. (false)
168 /// </summary> 168 /// </summary>
169 public const bool DefaultStartSuspended = false; 169 public const bool DefaultStartSuspended = false;
170 170
171 /// <summary> 171 /// <summary>
172 /// The default name to use for the performance counters instance. (null) 172 /// The default name to use for the performance counters instance. (null)
173 /// </summary> 173 /// </summary>
174 public static readonly string DefaultPerformanceCounterInstanceName; 174 public static readonly string DefaultPerformanceCounterInstanceName;
175 175
176#if !(WINDOWS_PHONE) 176#if !(WINDOWS_PHONE)
177 177
178 /// <summary> 178 /// <summary>
179 /// The default thread priority (ThreadPriority.Normal) 179 /// The default thread priority (ThreadPriority.Normal)
180 /// </summary> 180 /// </summary>
181 public const ThreadPriority DefaultThreadPriority = ThreadPriority.Normal; 181 public const ThreadPriority DefaultThreadPriority = ThreadPriority.Normal;
182#endif 182#endif
183 /// <summary> 183 /// <summary>
184 /// The default thread pool name. (SmartThreadPool) 184 /// The default thread pool name. (SmartThreadPool)
@@ -203,37 +203,37 @@ namespace Amib.Threading
203 203
204#if !(_SILVERLIGHT) && !(WINDOWS_PHONE) 204#if !(_SILVERLIGHT) && !(WINDOWS_PHONE)
205 /// <summary> 205 /// <summary>
206 /// The default apartment state of a thread in the thread pool. 206 /// The default apartment state of a thread in the thread pool.
207 /// The default is ApartmentState.Unknown which means the STP will not 207 /// The default is ApartmentState.Unknown which means the STP will not
208 /// set the apartment of the thread. It will use the .NET default. 208 /// set the apartment of the thread. It will use the .NET default.
209 /// </summary> 209 /// </summary>
210 public const ApartmentState DefaultApartmentState = ApartmentState.Unknown; 210 public const ApartmentState DefaultApartmentState = ApartmentState.Unknown;
211#endif 211#endif
212 212
213 #endregion 213 #endregion
214 214
215 #region Member Variables 215 #region Member Variables
216 216
217 /// <summary> 217 /// <summary>
218 /// Dictionary of all the threads in the thread pool. 218 /// Dictionary of all the threads in the thread pool.
219 /// </summary> 219 /// </summary>
220 private readonly SynchronizedDictionary<Thread, ThreadEntry> _workerThreads = new SynchronizedDictionary<Thread, ThreadEntry>(); 220 private readonly SynchronizedDictionary<Thread, ThreadEntry> _workerThreads = new SynchronizedDictionary<Thread, ThreadEntry>();
221 221
222 /// <summary> 222 /// <summary>
223 /// Queue of work items. 223 /// Queue of work items.
224 /// </summary> 224 /// </summary>
225 private readonly WorkItemsQueue _workItemsQueue = new WorkItemsQueue(); 225 private readonly WorkItemsQueue _workItemsQueue = new WorkItemsQueue();
226 226
227 /// <summary> 227 /// <summary>
228 /// Count the work items handled. 228 /// Count the work items handled.
229 /// Used by the performance counter. 229 /// Used by the performance counter.
230 /// </summary> 230 /// </summary>
231 private int _workItemsProcessed; 231 private int _workItemsProcessed;
232 232
233 /// <summary> 233 /// <summary>
234 /// Number of threads that currently work (not idle). 234 /// Number of threads that currently work (not idle).
235 /// </summary> 235 /// </summary>
236 private int _inUseWorkerThreads; 236 private int _inUseWorkerThreads;
237 237
238 /// <summary> 238 /// <summary>
239 /// Stores a copy of the original STPStartInfo. 239 /// Stores a copy of the original STPStartInfo.
@@ -241,51 +241,51 @@ namespace Amib.Threading
241 /// </summary> 241 /// </summary>
242 private STPStartInfo _stpStartInfo; 242 private STPStartInfo _stpStartInfo;
243 243
244 /// <summary> 244 /// <summary>
245 /// Total number of work items that are stored in the work items queue 245 /// Total number of work items that are stored in the work items queue
246 /// plus the work items that the threads in the pool are working on. 246 /// plus the work items that the threads in the pool are working on.
247 /// </summary> 247 /// </summary>
248 private int _currentWorkItemsCount; 248 private int _currentWorkItemsCount;
249 249
250 /// <summary> 250 /// <summary>
251 /// Signaled when the thread pool is idle, i.e. no thread is busy 251 /// Signaled when the thread pool is idle, i.e. no thread is busy
252 /// and the work items queue is empty 252 /// and the work items queue is empty
253 /// </summary> 253 /// </summary>
254 //private ManualResetEvent _isIdleWaitHandle = new ManualResetEvent(true); 254 //private ManualResetEvent _isIdleWaitHandle = new ManualResetEvent(true);
255 private ManualResetEvent _isIdleWaitHandle = EventWaitHandleFactory.CreateManualResetEvent(true); 255 private ManualResetEvent _isIdleWaitHandle = EventWaitHandleFactory.CreateManualResetEvent(true);
256 256
257 /// <summary> 257 /// <summary>
258 /// An event to signal all the threads to quit immediately. 258 /// An event to signal all the threads to quit immediately.
259 /// </summary> 259 /// </summary>
260 //private ManualResetEvent _shuttingDownEvent = new ManualResetEvent(false); 260 //private ManualResetEvent _shuttingDownEvent = new ManualResetEvent(false);
261 private ManualResetEvent _shuttingDownEvent = EventWaitHandleFactory.CreateManualResetEvent(false); 261 private ManualResetEvent _shuttingDownEvent = EventWaitHandleFactory.CreateManualResetEvent(false);
262 262
263 /// <summary> 263 /// <summary>
264 /// A flag to indicate if the Smart Thread Pool is now suspended. 264 /// A flag to indicate if the Smart Thread Pool is now suspended.
265 /// </summary> 265 /// </summary>
266 private bool _isSuspended; 266 private bool _isSuspended;
267 267
268 /// <summary> 268 /// <summary>
269 /// A flag to indicate the threads to quit. 269 /// A flag to indicate the threads to quit.
270 /// </summary> 270 /// </summary>
271 private bool _shutdown; 271 private bool _shutdown;
272 272
273 /// <summary> 273 /// <summary>
274 /// Counts the threads created in the pool. 274 /// Counts the threads created in the pool.
275 /// It is used to name the threads. 275 /// It is used to name the threads.
276 /// </summary> 276 /// </summary>
277 private int _threadCounter; 277 private int _threadCounter;
278 278
279 /// <summary> 279 /// <summary>
280 /// Indicate that the SmartThreadPool has been disposed 280 /// Indicate that the SmartThreadPool has been disposed
281 /// </summary> 281 /// </summary>
282 private bool _isDisposed; 282 private bool _isDisposed;
283 283
284 /// <summary> 284 /// <summary>
285 /// Holds all the WorkItemsGroup instaces that have at least one 285 /// Holds all the WorkItemsGroup instaces that have at least one
286 /// work item int the SmartThreadPool 286 /// work item int the SmartThreadPool
287 /// This variable is used in case of Shutdown 287 /// This variable is used in case of Shutdown
288 /// </summary> 288 /// </summary>
289 private readonly SynchronizedDictionary<IWorkItemsGroup, IWorkItemsGroup> _workItemsGroups = new SynchronizedDictionary<IWorkItemsGroup, IWorkItemsGroup>(); 289 private readonly SynchronizedDictionary<IWorkItemsGroup, IWorkItemsGroup> _workItemsGroups = new SynchronizedDictionary<IWorkItemsGroup, IWorkItemsGroup>();
290 290
291 /// <summary> 291 /// <summary>
@@ -305,7 +305,7 @@ namespace Amib.Threading
305 private ISTPInstancePerformanceCounters _localPCs = NullSTPInstancePerformanceCounters.Instance; 305 private ISTPInstancePerformanceCounters _localPCs = NullSTPInstancePerformanceCounters.Instance;
306 306
307 307
308#if (WINDOWS_PHONE) 308#if (WINDOWS_PHONE)
309 private static readonly Dictionary<int, ThreadEntry> _threadEntries = new Dictionary<int, ThreadEntry>(); 309 private static readonly Dictionary<int, ThreadEntry> _threadEntries = new Dictionary<int, ThreadEntry>();
310#elif (_WINDOWS_CE) 310#elif (_WINDOWS_CE)
311 private static LocalDataStoreSlot _threadEntrySlot = Thread.AllocateDataSlot(); 311 private static LocalDataStoreSlot _threadEntrySlot = Thread.AllocateDataSlot();
@@ -316,13 +316,13 @@ namespace Amib.Threading
316#endif 316#endif
317 317
318 /// <summary> 318 /// <summary>
319 /// An event to call after a thread is created, but before 319 /// An event to call after a thread is created, but before
320 /// it's first use. 320 /// it's first use.
321 /// </summary> 321 /// </summary>
322 private event ThreadInitializationHandler _onThreadInitialization; 322 private event ThreadInitializationHandler _onThreadInitialization;
323 323
324 /// <summary> 324 /// <summary>
325 /// An event to call when a thread is about to exit, after 325 /// An event to call when a thread is about to exit, after
326 /// it is no longer belong to the pool. 326 /// it is no longer belong to the pool.
327 /// </summary> 327 /// </summary>
328 private event ThreadTerminationHandler _onThreadTermination; 328 private event ThreadTerminationHandler _onThreadTermination;
@@ -332,7 +332,7 @@ namespace Amib.Threading
332 #region Per thread properties 332 #region Per thread properties
333 333
334 /// <summary> 334 /// <summary>
335 /// A reference to the current work item a thread from the thread pool 335 /// A reference to the current work item a thread from the thread pool
336 /// is executing. 336 /// is executing.
337 /// </summary> 337 /// </summary>
338 internal static ThreadEntry CurrentThreadEntry 338 internal static ThreadEntry CurrentThreadEntry
@@ -383,78 +383,78 @@ namespace Amib.Threading
383 #region Construction and Finalization 383 #region Construction and Finalization
384 384
385 /// <summary> 385 /// <summary>
386 /// Constructor 386 /// Constructor
387 /// </summary> 387 /// </summary>
388 public SmartThreadPool() 388 public SmartThreadPool()
389 { 389 {
390 _stpStartInfo = new STPStartInfo(); 390 _stpStartInfo = new STPStartInfo();
391 Initialize(); 391 Initialize();
392 } 392 }
393 393
394 /// <summary> 394 /// <summary>
395 /// Constructor 395 /// Constructor
396 /// </summary> 396 /// </summary>
397 /// <param name="idleTimeout">Idle timeout in milliseconds</param> 397 /// <param name="idleTimeout">Idle timeout in milliseconds</param>
398 public SmartThreadPool(int idleTimeout) 398 public SmartThreadPool(int idleTimeout)
399 { 399 {
400 _stpStartInfo = new STPStartInfo 400 _stpStartInfo = new STPStartInfo
401 { 401 {
402 IdleTimeout = idleTimeout, 402 IdleTimeout = idleTimeout,
403 }; 403 };
404 Initialize(); 404 Initialize();
405 } 405 }
406 406
407 /// <summary> 407 /// <summary>
408 /// Constructor 408 /// Constructor
409 /// </summary> 409 /// </summary>
410 /// <param name="idleTimeout">Idle timeout in milliseconds</param> 410 /// <param name="idleTimeout">Idle timeout in milliseconds</param>
411 /// <param name="maxWorkerThreads">Upper limit of threads in the pool</param> 411 /// <param name="maxWorkerThreads">Upper limit of threads in the pool</param>
412 public SmartThreadPool( 412 public SmartThreadPool(
413 int idleTimeout, 413 int idleTimeout,
414 int maxWorkerThreads) 414 int maxWorkerThreads)
415 { 415 {
416 _stpStartInfo = new STPStartInfo 416 _stpStartInfo = new STPStartInfo
417 { 417 {
418 IdleTimeout = idleTimeout, 418 IdleTimeout = idleTimeout,
419 MaxWorkerThreads = maxWorkerThreads, 419 MaxWorkerThreads = maxWorkerThreads,
420 }; 420 };
421 Initialize(); 421 Initialize();
422 } 422 }
423 423
424 /// <summary> 424 /// <summary>
425 /// Constructor 425 /// Constructor
426 /// </summary> 426 /// </summary>
427 /// <param name="idleTimeout">Idle timeout in milliseconds</param> 427 /// <param name="idleTimeout">Idle timeout in milliseconds</param>
428 /// <param name="maxWorkerThreads">Upper limit of threads in the pool</param> 428 /// <param name="maxWorkerThreads">Upper limit of threads in the pool</param>
429 /// <param name="minWorkerThreads">Lower limit of threads in the pool</param> 429 /// <param name="minWorkerThreads">Lower limit of threads in the pool</param>
430 public SmartThreadPool( 430 public SmartThreadPool(
431 int idleTimeout, 431 int idleTimeout,
432 int maxWorkerThreads, 432 int maxWorkerThreads,
433 int minWorkerThreads) 433 int minWorkerThreads)
434 { 434 {
435 _stpStartInfo = new STPStartInfo 435 _stpStartInfo = new STPStartInfo
436 { 436 {
437 IdleTimeout = idleTimeout, 437 IdleTimeout = idleTimeout,
438 MaxWorkerThreads = maxWorkerThreads, 438 MaxWorkerThreads = maxWorkerThreads,
439 MinWorkerThreads = minWorkerThreads, 439 MinWorkerThreads = minWorkerThreads,
440 }; 440 };
441 Initialize(); 441 Initialize();
442 } 442 }
443 443
444 /// <summary> 444 /// <summary>
445 /// Constructor 445 /// Constructor
446 /// </summary> 446 /// </summary>
447 /// <param name="stpStartInfo">A SmartThreadPool configuration that overrides the default behavior</param> 447 /// <param name="stpStartInfo">A SmartThreadPool configuration that overrides the default behavior</param>
448 public SmartThreadPool(STPStartInfo stpStartInfo) 448 public SmartThreadPool(STPStartInfo stpStartInfo)
449 { 449 {
450 _stpStartInfo = new STPStartInfo(stpStartInfo); 450 _stpStartInfo = new STPStartInfo(stpStartInfo);
451 Initialize(); 451 Initialize();
452 } 452 }
453 453
454 private void Initialize() 454 private void Initialize()
455 { 455 {
456 Name = _stpStartInfo.ThreadPoolName; 456 Name = _stpStartInfo.ThreadPoolName;
457 ValidateSTPStartInfo(); 457 ValidateSTPStartInfo();
458 458
459 // _stpStartInfoRW stores a read/write copy of the STPStartInfo. 459 // _stpStartInfoRW stores a read/write copy of the STPStartInfo.
460 // Actually only MaxWorkerThreads and MinWorkerThreads are overwritten 460 // Actually only MaxWorkerThreads and MinWorkerThreads are overwritten
@@ -462,8 +462,8 @@ namespace Amib.Threading
462 _isSuspended = _stpStartInfo.StartSuspended; 462 _isSuspended = _stpStartInfo.StartSuspended;
463 463
464#if (_WINDOWS_CE) || (_SILVERLIGHT) || (_MONO) || (WINDOWS_PHONE) 464#if (_WINDOWS_CE) || (_SILVERLIGHT) || (_MONO) || (WINDOWS_PHONE)
465 if (null != _stpStartInfo.PerformanceCounterInstanceName) 465 if (null != _stpStartInfo.PerformanceCounterInstanceName)
466 { 466 {
467 throw new NotSupportedException("Performance counters are not implemented for Compact Framework/Silverlight/Mono, instead use StpStartInfo.EnableLocalPerformanceCounters"); 467 throw new NotSupportedException("Performance counters are not implemented for Compact Framework/Silverlight/Mono, instead use StpStartInfo.EnableLocalPerformanceCounters");
468 } 468 }
469#else 469#else
@@ -486,110 +486,110 @@ namespace Amib.Threading
486 _localPCs = new LocalSTPInstancePerformanceCounters(); 486 _localPCs = new LocalSTPInstancePerformanceCounters();
487 } 487 }
488 488
489 // If the STP is not started suspended then start the threads. 489 // If the STP is not started suspended then start the threads.
490 if (!_isSuspended) 490 if (!_isSuspended)
491 { 491 {
492 StartOptimalNumberOfThreads(); 492 StartOptimalNumberOfThreads();
493 } 493 }
494 } 494 }
495 495
496 private void StartOptimalNumberOfThreads() 496 private void StartOptimalNumberOfThreads()
497 { 497 {
498 int threadsCount = Math.Max(_workItemsQueue.Count, _stpStartInfo.MinWorkerThreads); 498 int threadsCount = Math.Max(_workItemsQueue.Count, _stpStartInfo.MinWorkerThreads);
499 threadsCount = Math.Min(threadsCount, _stpStartInfo.MaxWorkerThreads); 499 threadsCount = Math.Min(threadsCount, _stpStartInfo.MaxWorkerThreads);
500 threadsCount -= _workerThreads.Count; 500 threadsCount -= _workerThreads.Count;
501 if (threadsCount > 0) 501 if (threadsCount > 0)
502 { 502 {
503 StartThreads(threadsCount); 503 StartThreads(threadsCount);
504 } 504 }
505 } 505 }
506 506
507 private void ValidateSTPStartInfo() 507 private void ValidateSTPStartInfo()
508 { 508 {
509 if (_stpStartInfo.MinWorkerThreads < 0) 509 if (_stpStartInfo.MinWorkerThreads < 0)
510 { 510 {
511 throw new ArgumentOutOfRangeException( 511 throw new ArgumentOutOfRangeException(
512 "MinWorkerThreads", "MinWorkerThreads cannot be negative"); 512 "MinWorkerThreads", "MinWorkerThreads cannot be negative");
513 } 513 }
514 514
515 if (_stpStartInfo.MaxWorkerThreads <= 0) 515 if (_stpStartInfo.MaxWorkerThreads <= 0)
516 { 516 {
517 throw new ArgumentOutOfRangeException( 517 throw new ArgumentOutOfRangeException(
518 "MaxWorkerThreads", "MaxWorkerThreads must be greater than zero"); 518 "MaxWorkerThreads", "MaxWorkerThreads must be greater than zero");
519 } 519 }
520 520
521 if (_stpStartInfo.MinWorkerThreads > _stpStartInfo.MaxWorkerThreads) 521 if (_stpStartInfo.MinWorkerThreads > _stpStartInfo.MaxWorkerThreads)
522 { 522 {
523 throw new ArgumentOutOfRangeException( 523 throw new ArgumentOutOfRangeException(
524 "MinWorkerThreads, maxWorkerThreads", 524 "MinWorkerThreads, maxWorkerThreads",
525 "MaxWorkerThreads must be greater or equal to MinWorkerThreads"); 525 "MaxWorkerThreads must be greater or equal to MinWorkerThreads");
526 } 526 }
527 } 527 }
528 528
529 private static void ValidateCallback(Delegate callback) 529 private static void ValidateCallback(Delegate callback)
530 { 530 {
531 if(callback.GetInvocationList().Length > 1) 531 if(callback.GetInvocationList().Length > 1)
532 { 532 {
533 throw new NotSupportedException("SmartThreadPool doesn't support delegates chains"); 533 throw new NotSupportedException("SmartThreadPool doesn't support delegates chains");
534 } 534 }
535 } 535 }
536 536
537 #endregion 537 #endregion
538 538
539 #region Thread Processing 539 #region Thread Processing
540 540
541 /// <summary> 541 /// <summary>
542 /// Waits on the queue for a work item, shutdown, or timeout. 542 /// Waits on the queue for a work item, shutdown, or timeout.
543 /// </summary> 543 /// </summary>
544 /// <returns> 544 /// <returns>
545 /// Returns the WaitingCallback or null in case of timeout or shutdown. 545 /// Returns the WaitingCallback or null in case of timeout or shutdown.
546 /// </returns> 546 /// </returns>
547 private WorkItem Dequeue() 547 private WorkItem Dequeue()
548 { 548 {
549 WorkItem workItem = 549 WorkItem workItem =
550 _workItemsQueue.DequeueWorkItem(_stpStartInfo.IdleTimeout, _shuttingDownEvent); 550 _workItemsQueue.DequeueWorkItem(_stpStartInfo.IdleTimeout, _shuttingDownEvent);
551 551
552 return workItem; 552 return workItem;
553 } 553 }
554 554
555 /// <summary> 555 /// <summary>
556 /// Put a new work item in the queue 556 /// Put a new work item in the queue
557 /// </summary> 557 /// </summary>
558 /// <param name="workItem">A work item to queue</param> 558 /// <param name="workItem">A work item to queue</param>
559 internal override void Enqueue(WorkItem workItem) 559 internal override void Enqueue(WorkItem workItem)
560 { 560 {
561 // Make sure the workItem is not null 561 // Make sure the workItem is not null
562 Debug.Assert(null != workItem); 562 Debug.Assert(null != workItem);
563 563
564 IncrementWorkItemsCount(); 564 IncrementWorkItemsCount();
565 565
566 workItem.CanceledSmartThreadPool = _canceledSmartThreadPool; 566 workItem.CanceledSmartThreadPool = _canceledSmartThreadPool;
567 _workItemsQueue.EnqueueWorkItem(workItem); 567 _workItemsQueue.EnqueueWorkItem(workItem);
568 workItem.WorkItemIsQueued(); 568 workItem.WorkItemIsQueued();
569 569
570 // If all the threads are busy then try to create a new one 570 // If all the threads are busy then try to create a new one
571 if (_currentWorkItemsCount > _workerThreads.Count) 571 if (_currentWorkItemsCount > _workerThreads.Count)
572 { 572 {
573 StartThreads(1); 573 StartThreads(1);
574 } 574 }
575 } 575 }
576 576
577 private void IncrementWorkItemsCount() 577 private void IncrementWorkItemsCount()
578 { 578 {
579 _windowsPCs.SampleWorkItems(_workItemsQueue.Count, _workItemsProcessed); 579 _windowsPCs.SampleWorkItems(_workItemsQueue.Count, _workItemsProcessed);
580 _localPCs.SampleWorkItems(_workItemsQueue.Count, _workItemsProcessed); 580 _localPCs.SampleWorkItems(_workItemsQueue.Count, _workItemsProcessed);
581 581
582 int count = Interlocked.Increment(ref _currentWorkItemsCount); 582 int count = Interlocked.Increment(ref _currentWorkItemsCount);
583 //Trace.WriteLine("WorkItemsCount = " + _currentWorkItemsCount.ToString()); 583 //Trace.WriteLine("WorkItemsCount = " + _currentWorkItemsCount.ToString());
584 if (count == 1) 584 if (count == 1)
585 { 585 {
586 IsIdle = false; 586 IsIdle = false;
587 _isIdleWaitHandle.Reset(); 587 _isIdleWaitHandle.Reset();
588 } 588 }
589 } 589 }
590 590
591 private void DecrementWorkItemsCount() 591 private void DecrementWorkItemsCount()
592 { 592 {
593 int count = Interlocked.Decrement(ref _currentWorkItemsCount); 593 int count = Interlocked.Decrement(ref _currentWorkItemsCount);
594 //Trace.WriteLine("WorkItemsCount = " + _currentWorkItemsCount.ToString()); 594 //Trace.WriteLine("WorkItemsCount = " + _currentWorkItemsCount.ToString());
595 if (count == 0) 595 if (count == 0)
@@ -602,81 +602,81 @@ namespace Amib.Threading
602 602
603 if (!_shutdown) 603 if (!_shutdown)
604 { 604 {
605 // The counter counts even if the work item was cancelled 605 // The counter counts even if the work item was cancelled
606 _windowsPCs.SampleWorkItems(_workItemsQueue.Count, _workItemsProcessed); 606 _windowsPCs.SampleWorkItems(_workItemsQueue.Count, _workItemsProcessed);
607 _localPCs.SampleWorkItems(_workItemsQueue.Count, _workItemsProcessed); 607 _localPCs.SampleWorkItems(_workItemsQueue.Count, _workItemsProcessed);
608 } 608 }
609 609
610 } 610 }
611 611
612 internal void RegisterWorkItemsGroup(IWorkItemsGroup workItemsGroup) 612 internal void RegisterWorkItemsGroup(IWorkItemsGroup workItemsGroup)
613 { 613 {
614 _workItemsGroups[workItemsGroup] = workItemsGroup; 614 _workItemsGroups[workItemsGroup] = workItemsGroup;
615 } 615 }
616 616
617 internal void UnregisterWorkItemsGroup(IWorkItemsGroup workItemsGroup) 617 internal void UnregisterWorkItemsGroup(IWorkItemsGroup workItemsGroup)
618 { 618 {
619 if (_workItemsGroups.Contains(workItemsGroup)) 619 if (_workItemsGroups.Contains(workItemsGroup))
620 { 620 {
621 _workItemsGroups.Remove(workItemsGroup); 621 _workItemsGroups.Remove(workItemsGroup);
622 } 622 }
623 } 623 }
624 624
625 /// <summary> 625 /// <summary>
626 /// Inform that the current thread is about to quit or quiting. 626 /// Inform that the current thread is about to quit or quiting.
627 /// The same thread may call this method more than once. 627 /// The same thread may call this method more than once.
628 /// </summary> 628 /// </summary>
629 private void InformCompleted() 629 private void InformCompleted()
630 { 630 {
631 // There is no need to lock the two methods together 631 // There is no need to lock the two methods together
632 // since only the current thread removes itself 632 // since only the current thread removes itself
633 // and the _workerThreads is a synchronized dictionary 633 // and the _workerThreads is a synchronized dictionary
634 if (_workerThreads.Contains(Thread.CurrentThread)) 634 if (_workerThreads.Contains(Thread.CurrentThread))
635 { 635 {
636 _workerThreads.Remove(Thread.CurrentThread); 636 _workerThreads.Remove(Thread.CurrentThread);
637 _windowsPCs.SampleThreads(_workerThreads.Count, _inUseWorkerThreads); 637 _windowsPCs.SampleThreads(_workerThreads.Count, _inUseWorkerThreads);
638 _localPCs.SampleThreads(_workerThreads.Count, _inUseWorkerThreads); 638 _localPCs.SampleThreads(_workerThreads.Count, _inUseWorkerThreads);
639 } 639 }
640 } 640 }
641 641
642 /// <summary> 642 /// <summary>
643 /// Starts new threads 643 /// Starts new threads
644 /// </summary> 644 /// </summary>
645 /// <param name="threadsCount">The number of threads to start</param> 645 /// <param name="threadsCount">The number of threads to start</param>
646 private void StartThreads(int threadsCount) 646 private void StartThreads(int threadsCount)
647 { 647 {
648 if (_isSuspended) 648 if (_isSuspended)
649 { 649 {
650 return; 650 return;
651 } 651 }
652 652
653 lock(_workerThreads.SyncRoot) 653 lock(_workerThreads.SyncRoot)
654 { 654 {
655 // Don't start threads on shut down 655 // Don't start threads on shut down
656 if (_shutdown) 656 if (_shutdown)
657 { 657 {
658 return; 658 return;
659 } 659 }
660 660
661 for(int i = 0; i < threadsCount; ++i) 661 for(int i = 0; i < threadsCount; ++i)
662 { 662 {
663 // Don't create more threads then the upper limit 663 // Don't create more threads then the upper limit
664 if (_workerThreads.Count >= _stpStartInfo.MaxWorkerThreads) 664 if (_workerThreads.Count >= _stpStartInfo.MaxWorkerThreads)
665 { 665 {
666 return; 666 return;
667 } 667 }
668 668
669 // Create a new thread 669 // Create a new thread
670 670
671#if (_SILVERLIGHT) || (WINDOWS_PHONE) 671#if (_SILVERLIGHT) || (WINDOWS_PHONE)
672 Thread workerThread = new Thread(ProcessQueuedItems); 672 Thread workerThread = new Thread(ProcessQueuedItems);
673#else 673#else
674 Thread workerThread = 674 Thread workerThread =
675 _stpStartInfo.MaxStackSize.HasValue 675 _stpStartInfo.MaxStackSize.HasValue
676 ? new Thread(ProcessQueuedItems, _stpStartInfo.MaxStackSize.Value) 676 ? new Thread(ProcessQueuedItems, _stpStartInfo.MaxStackSize.Value)
677 : new Thread(ProcessQueuedItems); 677 : new Thread(ProcessQueuedItems);
678#endif 678#endif
679 // Configure the new thread and start it 679 // Configure the new thread and start it
680 workerThread.IsBackground = _stpStartInfo.AreThreadsBackground; 680 workerThread.IsBackground = _stpStartInfo.AreThreadsBackground;
681 681
682#if !(_SILVERLIGHT) && !(_WINDOWS_CE) && !(WINDOWS_PHONE) 682#if !(_SILVERLIGHT) && !(_WINDOWS_CE) && !(WINDOWS_PHONE)
@@ -689,39 +689,40 @@ namespace Amib.Threading
689#if !(_SILVERLIGHT) && !(WINDOWS_PHONE) 689#if !(_SILVERLIGHT) && !(WINDOWS_PHONE)
690 workerThread.Priority = _stpStartInfo.ThreadPriority; 690 workerThread.Priority = _stpStartInfo.ThreadPriority;
691#endif 691#endif
692 workerThread.Start();
693 workerThread.Name = string.Format("STP:{0}:{1}", Name, _threadCounter); 692 workerThread.Name = string.Format("STP:{0}:{1}", Name, _threadCounter);
694 ++_threadCounter; 693 workerThread.Start();
694
695 ++_threadCounter;
695 696
696 // Add it to the dictionary and update its creation time. 697 // Add it to the dictionary and update its creation time.
697 _workerThreads[workerThread] = new ThreadEntry(this); 698 _workerThreads[workerThread] = new ThreadEntry(this);
698 699
699 _windowsPCs.SampleThreads(_workerThreads.Count, _inUseWorkerThreads); 700 _windowsPCs.SampleThreads(_workerThreads.Count, _inUseWorkerThreads);
700 _localPCs.SampleThreads(_workerThreads.Count, _inUseWorkerThreads); 701 _localPCs.SampleThreads(_workerThreads.Count, _inUseWorkerThreads);
701 } 702 }
702 } 703 }
703 } 704 }
704 705
705 /// <summary> 706 /// <summary>
706 /// A worker thread method that processes work items from the work items queue. 707 /// A worker thread method that processes work items from the work items queue.
707 /// </summary> 708 /// </summary>
708 private void ProcessQueuedItems() 709 private void ProcessQueuedItems()
709 { 710 {
710 // Keep the entry of the dictionary as thread's variable to avoid the synchronization locks 711 // Keep the entry of the dictionary as thread's variable to avoid the synchronization locks
711 // of the dictionary. 712 // of the dictionary.
712 CurrentThreadEntry = _workerThreads[Thread.CurrentThread]; 713 CurrentThreadEntry = _workerThreads[Thread.CurrentThread];
713 714
714 FireOnThreadInitialization(); 715 FireOnThreadInitialization();
715 716
716 try 717 try
717 { 718 {
718 bool bInUseWorkerThreadsWasIncremented = false; 719 bool bInUseWorkerThreadsWasIncremented = false;
719 720
720 // Process until shutdown. 721 // Process until shutdown.
721 while(!_shutdown) 722 while(!_shutdown)
722 { 723 {
723 // Update the last time this thread was seen alive. 724 // Update the last time this thread was seen alive.
724 // It's good for debugging. 725 // It's good for debugging.
725 CurrentThreadEntry.IAmAlive(); 726 CurrentThreadEntry.IAmAlive();
726 727
727 // The following block handles the when the MaxWorkerThreads has been 728 // The following block handles the when the MaxWorkerThreads has been
@@ -743,166 +744,166 @@ namespace Amib.Threading
743 } 744 }
744 } 745 }
745 746
746 // Wait for a work item, shutdown, or timeout 747 // Wait for a work item, shutdown, or timeout
747 WorkItem workItem = Dequeue(); 748 WorkItem workItem = Dequeue();
748 749
749 // Update the last time this thread was seen alive. 750 // Update the last time this thread was seen alive.
750 // It's good for debugging. 751 // It's good for debugging.
751 CurrentThreadEntry.IAmAlive(); 752 CurrentThreadEntry.IAmAlive();
752 753
753 // On timeout or shut down. 754 // On timeout or shut down.
754 if (null == workItem) 755 if (null == workItem)
755 { 756 {
756 // Double lock for quit. 757 // Double lock for quit.
757 if (_workerThreads.Count > _stpStartInfo.MinWorkerThreads) 758 if (_workerThreads.Count > _stpStartInfo.MinWorkerThreads)
758 { 759 {
759 lock(_workerThreads.SyncRoot) 760 lock(_workerThreads.SyncRoot)
760 { 761 {
761 if (_workerThreads.Count > _stpStartInfo.MinWorkerThreads) 762 if (_workerThreads.Count > _stpStartInfo.MinWorkerThreads)
762 { 763 {
763 // Inform that the thread is quiting and then quit. 764 // Inform that the thread is quiting and then quit.
764 // This method must be called within this lock or else 765 // This method must be called within this lock or else
765 // more threads will quit and the thread pool will go 766 // more threads will quit and the thread pool will go
766 // below the lower limit. 767 // below the lower limit.
767 InformCompleted(); 768 InformCompleted();
768 break; 769 break;
769 } 770 }
770 } 771 }
771 } 772 }
772 } 773 }
773 774
774 // If we didn't quit then skip to the next iteration. 775 // If we didn't quit then skip to the next iteration.
775 if (null == workItem) 776 if (null == workItem)
776 { 777 {
777 continue; 778 continue;
778 } 779 }
779 780
780 try 781 try
781 { 782 {
782 // Initialize the value to false 783 // Initialize the value to false
783 bInUseWorkerThreadsWasIncremented = false; 784 bInUseWorkerThreadsWasIncremented = false;
784 785
785 // Set the Current Work Item of the thread. 786 // Set the Current Work Item of the thread.
786 // Store the Current Work Item before the workItem.StartingWorkItem() is called, 787 // Store the Current Work Item before the workItem.StartingWorkItem() is called,
787 // so WorkItem.Cancel can work when the work item is between InQueue and InProgress 788 // so WorkItem.Cancel can work when the work item is between InQueue and InProgress
788 // states. 789 // states.
789 // If the work item has been cancelled BEFORE the workItem.StartingWorkItem() 790 // If the work item has been cancelled BEFORE the workItem.StartingWorkItem()
790 // (work item is in InQueue state) then workItem.StartingWorkItem() will return false. 791 // (work item is in InQueue state) then workItem.StartingWorkItem() will return false.
791 // If the work item has been cancelled AFTER the workItem.StartingWorkItem() then 792 // If the work item has been cancelled AFTER the workItem.StartingWorkItem() then
792 // (work item is in InProgress state) then the thread will be aborted 793 // (work item is in InProgress state) then the thread will be aborted
793 CurrentThreadEntry.CurrentWorkItem = workItem; 794 CurrentThreadEntry.CurrentWorkItem = workItem;
794 795
795 // Change the state of the work item to 'in progress' if possible. 796 // Change the state of the work item to 'in progress' if possible.
796 // We do it here so if the work item has been canceled we won't 797 // We do it here so if the work item has been canceled we won't
797 // increment the _inUseWorkerThreads. 798 // increment the _inUseWorkerThreads.
798 // The cancel mechanism doesn't delete items from the queue, 799 // The cancel mechanism doesn't delete items from the queue,
799 // it marks the work item as canceled, and when the work item 800 // it marks the work item as canceled, and when the work item
800 // is dequeued, we just skip it. 801 // is dequeued, we just skip it.
801 // If the post execute of work item is set to always or to 802 // If the post execute of work item is set to always or to
802 // call when the work item is canceled then the StartingWorkItem() 803 // call when the work item is canceled then the StartingWorkItem()
803 // will return true, so the post execute can run. 804 // will return true, so the post execute can run.
804 if (!workItem.StartingWorkItem()) 805 if (!workItem.StartingWorkItem())
805 { 806 {
806 continue; 807 continue;
807 } 808 }
808 809
809 // Execute the callback. Make sure to accurately 810 // Execute the callback. Make sure to accurately
810 // record how many callbacks are currently executing. 811 // record how many callbacks are currently executing.
811 int inUseWorkerThreads = Interlocked.Increment(ref _inUseWorkerThreads); 812 int inUseWorkerThreads = Interlocked.Increment(ref _inUseWorkerThreads);
812 _windowsPCs.SampleThreads(_workerThreads.Count, inUseWorkerThreads); 813 _windowsPCs.SampleThreads(_workerThreads.Count, inUseWorkerThreads);
813 _localPCs.SampleThreads(_workerThreads.Count, inUseWorkerThreads); 814 _localPCs.SampleThreads(_workerThreads.Count, inUseWorkerThreads);
814 815
815 // Mark that the _inUseWorkerThreads incremented, so in the finally{} 816 // Mark that the _inUseWorkerThreads incremented, so in the finally{}
816 // statement we will decrement it correctly. 817 // statement we will decrement it correctly.
817 bInUseWorkerThreadsWasIncremented = true; 818 bInUseWorkerThreadsWasIncremented = true;
818 819
819 workItem.FireWorkItemStarted(); 820 workItem.FireWorkItemStarted();
820 821
821 ExecuteWorkItem(workItem); 822 ExecuteWorkItem(workItem);
822 } 823 }
823 catch(Exception ex) 824 catch(Exception ex)
824 { 825 {
825 ex.GetHashCode(); 826 ex.GetHashCode();
826 // Do nothing 827 // Do nothing
827 } 828 }
828 finally 829 finally
829 { 830 {
830 workItem.DisposeOfState(); 831 workItem.DisposeOfState();
831 832
832 // Set the CurrentWorkItem to null, since we 833 // Set the CurrentWorkItem to null, since we
833 // no longer run user's code. 834 // no longer run user's code.
834 CurrentThreadEntry.CurrentWorkItem = null; 835 CurrentThreadEntry.CurrentWorkItem = null;
835 836
836 // Decrement the _inUseWorkerThreads only if we had 837 // Decrement the _inUseWorkerThreads only if we had
837 // incremented it. Note the cancelled work items don't 838 // incremented it. Note the cancelled work items don't
838 // increment _inUseWorkerThreads. 839 // increment _inUseWorkerThreads.
839 if (bInUseWorkerThreadsWasIncremented) 840 if (bInUseWorkerThreadsWasIncremented)
840 { 841 {
841 int inUseWorkerThreads = Interlocked.Decrement(ref _inUseWorkerThreads); 842 int inUseWorkerThreads = Interlocked.Decrement(ref _inUseWorkerThreads);
842 _windowsPCs.SampleThreads(_workerThreads.Count, inUseWorkerThreads); 843 _windowsPCs.SampleThreads(_workerThreads.Count, inUseWorkerThreads);
843 _localPCs.SampleThreads(_workerThreads.Count, inUseWorkerThreads); 844 _localPCs.SampleThreads(_workerThreads.Count, inUseWorkerThreads);
844 } 845 }
845 846
846 // Notify that the work item has been completed. 847 // Notify that the work item has been completed.
847 // WorkItemsGroup may enqueue their next work item. 848 // WorkItemsGroup may enqueue their next work item.
848 workItem.FireWorkItemCompleted(); 849 workItem.FireWorkItemCompleted();
849 850
850 // Decrement the number of work items here so the idle 851 // Decrement the number of work items here so the idle
851 // ManualResetEvent won't fluctuate. 852 // ManualResetEvent won't fluctuate.
852 DecrementWorkItemsCount(); 853 DecrementWorkItemsCount();
853 } 854 }
854 } 855 }
855 } 856 }
856 catch(ThreadAbortException tae) 857 catch(ThreadAbortException tae)
857 { 858 {
858 tae.GetHashCode(); 859 tae.GetHashCode();
859 // Handle the abort exception gracfully. 860 // Handle the abort exception gracfully.
860#if !(_WINDOWS_CE) && !(_SILVERLIGHT) && !(WINDOWS_PHONE) 861#if !(_WINDOWS_CE) && !(_SILVERLIGHT) && !(WINDOWS_PHONE)
861 Thread.ResetAbort(); 862 Thread.ResetAbort();
862#endif 863#endif
863 } 864 }
864 catch(Exception e) 865 catch(Exception e)
865 { 866 {
866 Debug.Assert(null != e); 867 Debug.Assert(null != e);
867 } 868 }
868 finally 869 finally
869 { 870 {
870 InformCompleted(); 871 InformCompleted();
871 FireOnThreadTermination(); 872 FireOnThreadTermination();
872 } 873 }
873 } 874 }
874 875
875 private void ExecuteWorkItem(WorkItem workItem) 876 private void ExecuteWorkItem(WorkItem workItem)
876 { 877 {
877 _windowsPCs.SampleWorkItemsWaitTime(workItem.WaitingTime); 878 _windowsPCs.SampleWorkItemsWaitTime(workItem.WaitingTime);
878 _localPCs.SampleWorkItemsWaitTime(workItem.WaitingTime); 879 _localPCs.SampleWorkItemsWaitTime(workItem.WaitingTime);
879 try 880 try
880 { 881 {
881 workItem.Execute(); 882 workItem.Execute();
882 } 883 }
883 finally 884 finally
884 { 885 {
885 _windowsPCs.SampleWorkItemsProcessTime(workItem.ProcessTime); 886 _windowsPCs.SampleWorkItemsProcessTime(workItem.ProcessTime);
886 _localPCs.SampleWorkItemsProcessTime(workItem.ProcessTime); 887 _localPCs.SampleWorkItemsProcessTime(workItem.ProcessTime);
887 } 888 }
888 } 889 }
889 890
890 891
891 #endregion 892 #endregion
892 893
893 #region Public Methods 894 #region Public Methods
894 895
895 private void ValidateWaitForIdle() 896 private void ValidateWaitForIdle()
896 { 897 {
897 if (null != CurrentThreadEntry && CurrentThreadEntry.AssociatedSmartThreadPool == this) 898 if (null != CurrentThreadEntry && CurrentThreadEntry.AssociatedSmartThreadPool == this)
898 { 899 {
899 throw new NotSupportedException( 900 throw new NotSupportedException(
900 "WaitForIdle cannot be called from a thread on its SmartThreadPool, it causes a deadlock"); 901 "WaitForIdle cannot be called from a thread on its SmartThreadPool, it causes a deadlock");
901 } 902 }
902 } 903 }
903 904
904 internal static void ValidateWorkItemsGroupWaitForIdle(IWorkItemsGroup workItemsGroup) 905 internal static void ValidateWorkItemsGroupWaitForIdle(IWorkItemsGroup workItemsGroup)
905 { 906 {
906 if (null == CurrentThreadEntry) 907 if (null == CurrentThreadEntry)
907 { 908 {
908 return; 909 return;
@@ -910,334 +911,334 @@ namespace Amib.Threading
910 911
911 WorkItem workItem = CurrentThreadEntry.CurrentWorkItem; 912 WorkItem workItem = CurrentThreadEntry.CurrentWorkItem;
912 ValidateWorkItemsGroupWaitForIdleImpl(workItemsGroup, workItem); 913 ValidateWorkItemsGroupWaitForIdleImpl(workItemsGroup, workItem);
913 if ((null != workItemsGroup) && 914 if ((null != workItemsGroup) &&
914 (null != workItem) && 915 (null != workItem) &&
915 CurrentThreadEntry.CurrentWorkItem.WasQueuedBy(workItemsGroup)) 916 CurrentThreadEntry.CurrentWorkItem.WasQueuedBy(workItemsGroup))
916 { 917 {
917 throw new NotSupportedException("WaitForIdle cannot be called from a thread on its SmartThreadPool, it causes a deadlock"); 918 throw new NotSupportedException("WaitForIdle cannot be called from a thread on its SmartThreadPool, it causes a deadlock");
918 } 919 }
919 } 920 }
920 921
921 [MethodImpl(MethodImplOptions.NoInlining)] 922 [MethodImpl(MethodImplOptions.NoInlining)]
922 private static void ValidateWorkItemsGroupWaitForIdleImpl(IWorkItemsGroup workItemsGroup, WorkItem workItem) 923 private static void ValidateWorkItemsGroupWaitForIdleImpl(IWorkItemsGroup workItemsGroup, WorkItem workItem)
923 { 924 {
924 if ((null != workItemsGroup) && 925 if ((null != workItemsGroup) &&
925 (null != workItem) && 926 (null != workItem) &&
926 workItem.WasQueuedBy(workItemsGroup)) 927 workItem.WasQueuedBy(workItemsGroup))
927 { 928 {
928 throw new NotSupportedException("WaitForIdle cannot be called from a thread on its SmartThreadPool, it causes a deadlock"); 929 throw new NotSupportedException("WaitForIdle cannot be called from a thread on its SmartThreadPool, it causes a deadlock");
929 } 930 }
930 } 931 }
931 932
932 /// <summary> 933 /// <summary>
933 /// Force the SmartThreadPool to shutdown 934 /// Force the SmartThreadPool to shutdown
934 /// </summary> 935 /// </summary>
935 public void Shutdown() 936 public void Shutdown()
936 { 937 {
937 Shutdown(true, 0); 938 Shutdown(true, 0);
938 } 939 }
939 940
940 /// <summary> 941 /// <summary>
941 /// Force the SmartThreadPool to shutdown with timeout 942 /// Force the SmartThreadPool to shutdown with timeout
942 /// </summary> 943 /// </summary>
943 public void Shutdown(bool forceAbort, TimeSpan timeout) 944 public void Shutdown(bool forceAbort, TimeSpan timeout)
944 { 945 {
945 Shutdown(forceAbort, (int)timeout.TotalMilliseconds); 946 Shutdown(forceAbort, (int)timeout.TotalMilliseconds);
946 } 947 }
947 948
948 /// <summary> 949 /// <summary>
949 /// Empties the queue of work items and abort the threads in the pool. 950 /// Empties the queue of work items and abort the threads in the pool.
950 /// </summary> 951 /// </summary>
951 public void Shutdown(bool forceAbort, int millisecondsTimeout) 952 public void Shutdown(bool forceAbort, int millisecondsTimeout)
952 { 953 {
953 ValidateNotDisposed(); 954 ValidateNotDisposed();
954 955
955 ISTPInstancePerformanceCounters pcs = _windowsPCs; 956 ISTPInstancePerformanceCounters pcs = _windowsPCs;
956 957
957 if (NullSTPInstancePerformanceCounters.Instance != _windowsPCs) 958 if (NullSTPInstancePerformanceCounters.Instance != _windowsPCs)
958 { 959 {
959 // Set the _pcs to "null" to stop updating the performance 960 // Set the _pcs to "null" to stop updating the performance
960 // counters 961 // counters
961 _windowsPCs = NullSTPInstancePerformanceCounters.Instance; 962 _windowsPCs = NullSTPInstancePerformanceCounters.Instance;
962 963
963 pcs.Dispose(); 964 pcs.Dispose();
964 } 965 }
965 966
966 Thread [] threads; 967 Thread [] threads;
967 lock(_workerThreads.SyncRoot) 968 lock(_workerThreads.SyncRoot)
968 { 969 {
969 // Shutdown the work items queue 970 // Shutdown the work items queue
970 _workItemsQueue.Dispose(); 971 _workItemsQueue.Dispose();
971 972
972 // Signal the threads to exit 973 // Signal the threads to exit
973 _shutdown = true; 974 _shutdown = true;
974 _shuttingDownEvent.Set(); 975 _shuttingDownEvent.Set();
975 976
976 // Make a copy of the threads' references in the pool 977 // Make a copy of the threads' references in the pool
977 threads = new Thread [_workerThreads.Count]; 978 threads = new Thread [_workerThreads.Count];
978 _workerThreads.Keys.CopyTo(threads, 0); 979 _workerThreads.Keys.CopyTo(threads, 0);
979 } 980 }
980 981
981 int millisecondsLeft = millisecondsTimeout; 982 int millisecondsLeft = millisecondsTimeout;
982 Stopwatch stopwatch = Stopwatch.StartNew(); 983 Stopwatch stopwatch = Stopwatch.StartNew();
983 //DateTime start = DateTime.UtcNow; 984 //DateTime start = DateTime.UtcNow;
984 bool waitInfinitely = (Timeout.Infinite == millisecondsTimeout); 985 bool waitInfinitely = (Timeout.Infinite == millisecondsTimeout);
985 bool timeout = false; 986 bool timeout = false;
986 987
987 // Each iteration we update the time left for the timeout. 988 // Each iteration we update the time left for the timeout.
988 foreach(Thread thread in threads) 989 foreach(Thread thread in threads)
989 { 990 {
990 // Join don't work with negative numbers 991 // Join don't work with negative numbers
991 if (!waitInfinitely && (millisecondsLeft < 0)) 992 if (!waitInfinitely && (millisecondsLeft < 0))
992 { 993 {
993 timeout = true; 994 timeout = true;
994 break; 995 break;
995 } 996 }
996 997
997 // Wait for the thread to terminate 998 // Wait for the thread to terminate
998 bool success = thread.Join(millisecondsLeft); 999 bool success = thread.Join(millisecondsLeft);
999 if(!success) 1000 if(!success)
1000 { 1001 {
1001 timeout = true; 1002 timeout = true;
1002 break; 1003 break;
1003 } 1004 }
1004 1005
1005 if(!waitInfinitely) 1006 if(!waitInfinitely)
1006 { 1007 {
1007 // Update the time left to wait 1008 // Update the time left to wait
1008 //TimeSpan ts = DateTime.UtcNow - start; 1009 //TimeSpan ts = DateTime.UtcNow - start;
1009 millisecondsLeft = millisecondsTimeout - (int)stopwatch.ElapsedMilliseconds; 1010 millisecondsLeft = millisecondsTimeout - (int)stopwatch.ElapsedMilliseconds;
1010 } 1011 }
1011 } 1012 }
1012 1013
1013 if (timeout && forceAbort) 1014 if (timeout && forceAbort)
1014 { 1015 {
1015 // Abort the threads in the pool 1016 // Abort the threads in the pool
1016 foreach(Thread thread in threads) 1017 foreach(Thread thread in threads)
1017 { 1018 {
1018 1019
1019 if ((thread != null) 1020 if ((thread != null)
1020#if !(_WINDOWS_CE) 1021#if !(_WINDOWS_CE)
1021 && thread.IsAlive 1022 && thread.IsAlive
1022#endif 1023#endif
1023 ) 1024 )
1024 { 1025 {
1025 try 1026 try
1026 { 1027 {
1027 thread.Abort(); // Shutdown 1028 thread.Abort(); // Shutdown
1028 } 1029 }
1029 catch(SecurityException e) 1030 catch(SecurityException e)
1030 { 1031 {
1031 e.GetHashCode(); 1032 e.GetHashCode();
1032 } 1033 }
1033 catch(ThreadStateException ex) 1034 catch(ThreadStateException ex)
1034 { 1035 {
1035 ex.GetHashCode(); 1036 ex.GetHashCode();
1036 // In case the thread has been terminated 1037 // In case the thread has been terminated
1037 // after the check if it is alive. 1038 // after the check if it is alive.
1038 } 1039 }
1039 } 1040 }
1040 } 1041 }
1041 } 1042 }
1042 } 1043 }
1043 1044
1044 /// <summary> 1045 /// <summary>
1045 /// Wait for all work items to complete 1046 /// Wait for all work items to complete
1046 /// </summary> 1047 /// </summary>
1047 /// <param name="waitableResults">Array of work item result objects</param> 1048 /// <param name="waitableResults">Array of work item result objects</param>
1048 /// <returns> 1049 /// <returns>
1049 /// true when every work item in workItemResults has completed; otherwise false. 1050 /// true when every work item in workItemResults has completed; otherwise false.
1050 /// </returns> 1051 /// </returns>
1051 public static bool WaitAll( 1052 public static bool WaitAll(
1052 IWaitableResult [] waitableResults) 1053 IWaitableResult [] waitableResults)
1053 { 1054 {
1054 return WaitAll(waitableResults, Timeout.Infinite, true); 1055 return WaitAll(waitableResults, Timeout.Infinite, true);
1055 } 1056 }
1056 1057
1057 /// <summary> 1058 /// <summary>
1058 /// Wait for all work items to complete 1059 /// Wait for all work items to complete
1059 /// </summary> 1060 /// </summary>
1060 /// <param name="waitableResults">Array of work item result objects</param> 1061 /// <param name="waitableResults">Array of work item result objects</param>
1061 /// <param name="timeout">The number of milliseconds to wait, or a TimeSpan that represents -1 milliseconds to wait indefinitely. </param> 1062 /// <param name="timeout">The number of milliseconds to wait, or a TimeSpan that represents -1 milliseconds to wait indefinitely. </param>
1062 /// <param name="exitContext"> 1063 /// <param name="exitContext">
1063 /// true to exit the synchronization domain for the context before the wait (if in a synchronized context), and reacquire it; otherwise, false. 1064 /// true to exit the synchronization domain for the context before the wait (if in a synchronized context), and reacquire it; otherwise, false.
1064 /// </param> 1065 /// </param>
1065 /// <returns> 1066 /// <returns>
1066 /// true when every work item in workItemResults has completed; otherwise false. 1067 /// true when every work item in workItemResults has completed; otherwise false.
1067 /// </returns> 1068 /// </returns>
1068 public static bool WaitAll( 1069 public static bool WaitAll(
1069 IWaitableResult [] waitableResults, 1070 IWaitableResult [] waitableResults,
1070 TimeSpan timeout, 1071 TimeSpan timeout,
1071 bool exitContext) 1072 bool exitContext)
1072 { 1073 {
1073 return WaitAll(waitableResults, (int)timeout.TotalMilliseconds, exitContext); 1074 return WaitAll(waitableResults, (int)timeout.TotalMilliseconds, exitContext);
1074 } 1075 }
1075 1076
1076 /// <summary> 1077 /// <summary>
1077 /// Wait for all work items to complete 1078 /// Wait for all work items to complete
1078 /// </summary> 1079 /// </summary>
1079 /// <param name="waitableResults">Array of work item result objects</param> 1080 /// <param name="waitableResults">Array of work item result objects</param>
1080 /// <param name="timeout">The number of milliseconds to wait, or a TimeSpan that represents -1 milliseconds to wait indefinitely. </param> 1081 /// <param name="timeout">The number of milliseconds to wait, or a TimeSpan that represents -1 milliseconds to wait indefinitely. </param>
1081 /// <param name="exitContext"> 1082 /// <param name="exitContext">
1082 /// true to exit the synchronization domain for the context before the wait (if in a synchronized context), and reacquire it; otherwise, false. 1083 /// true to exit the synchronization domain for the context before the wait (if in a synchronized context), and reacquire it; otherwise, false.
1083 /// </param> 1084 /// </param>
1084 /// <param name="cancelWaitHandle">A cancel wait handle to interrupt the wait if needed</param> 1085 /// <param name="cancelWaitHandle">A cancel wait handle to interrupt the wait if needed</param>
1085 /// <returns> 1086 /// <returns>
1086 /// true when every work item in workItemResults has completed; otherwise false. 1087 /// true when every work item in workItemResults has completed; otherwise false.
1087 /// </returns> 1088 /// </returns>
1088 public static bool WaitAll( 1089 public static bool WaitAll(
1089 IWaitableResult[] waitableResults, 1090 IWaitableResult[] waitableResults,
1090 TimeSpan timeout, 1091 TimeSpan timeout,
1091 bool exitContext, 1092 bool exitContext,
1092 WaitHandle cancelWaitHandle) 1093 WaitHandle cancelWaitHandle)
1093 { 1094 {
1094 return WaitAll(waitableResults, (int)timeout.TotalMilliseconds, exitContext, cancelWaitHandle); 1095 return WaitAll(waitableResults, (int)timeout.TotalMilliseconds, exitContext, cancelWaitHandle);
1095 } 1096 }
1096 1097
1097 /// <summary> 1098 /// <summary>
1098 /// Wait for all work items to complete 1099 /// Wait for all work items to complete
1099 /// </summary> 1100 /// </summary>
1100 /// <param name="waitableResults">Array of work item result objects</param> 1101 /// <param name="waitableResults">Array of work item result objects</param>
1101 /// <param name="millisecondsTimeout">The number of milliseconds to wait, or Timeout.Infinite (-1) to wait indefinitely.</param> 1102 /// <param name="millisecondsTimeout">The number of milliseconds to wait, or Timeout.Infinite (-1) to wait indefinitely.</param>
1102 /// <param name="exitContext"> 1103 /// <param name="exitContext">
1103 /// true to exit the synchronization domain for the context before the wait (if in a synchronized context), and reacquire it; otherwise, false. 1104 /// true to exit the synchronization domain for the context before the wait (if in a synchronized context), and reacquire it; otherwise, false.
1104 /// </param> 1105 /// </param>
1105 /// <returns> 1106 /// <returns>
1106 /// true when every work item in workItemResults has completed; otherwise false. 1107 /// true when every work item in workItemResults has completed; otherwise false.
1107 /// </returns> 1108 /// </returns>
1108 public static bool WaitAll( 1109 public static bool WaitAll(
1109 IWaitableResult [] waitableResults, 1110 IWaitableResult [] waitableResults,
1110 int millisecondsTimeout, 1111 int millisecondsTimeout,
1111 bool exitContext) 1112 bool exitContext)
1112 { 1113 {
1113 return WorkItem.WaitAll(waitableResults, millisecondsTimeout, exitContext, null); 1114 return WorkItem.WaitAll(waitableResults, millisecondsTimeout, exitContext, null);
1114 } 1115 }
1115 1116
1116 /// <summary> 1117 /// <summary>
1117 /// Wait for all work items to complete 1118 /// Wait for all work items to complete
1118 /// </summary> 1119 /// </summary>
1119 /// <param name="waitableResults">Array of work item result objects</param> 1120 /// <param name="waitableResults">Array of work item result objects</param>
1120 /// <param name="millisecondsTimeout">The number of milliseconds to wait, or Timeout.Infinite (-1) to wait indefinitely.</param> 1121 /// <param name="millisecondsTimeout">The number of milliseconds to wait, or Timeout.Infinite (-1) to wait indefinitely.</param>
1121 /// <param name="exitContext"> 1122 /// <param name="exitContext">
1122 /// true to exit the synchronization domain for the context before the wait (if in a synchronized context), and reacquire it; otherwise, false. 1123 /// true to exit the synchronization domain for the context before the wait (if in a synchronized context), and reacquire it; otherwise, false.
1123 /// </param> 1124 /// </param>
1124 /// <param name="cancelWaitHandle">A cancel wait handle to interrupt the wait if needed</param> 1125 /// <param name="cancelWaitHandle">A cancel wait handle to interrupt the wait if needed</param>
1125 /// <returns> 1126 /// <returns>
1126 /// true when every work item in workItemResults has completed; otherwise false. 1127 /// true when every work item in workItemResults has completed; otherwise false.
1127 /// </returns> 1128 /// </returns>
1128 public static bool WaitAll( 1129 public static bool WaitAll(
1129 IWaitableResult[] waitableResults, 1130 IWaitableResult[] waitableResults,
1130 int millisecondsTimeout, 1131 int millisecondsTimeout,
1131 bool exitContext, 1132 bool exitContext,
1132 WaitHandle cancelWaitHandle) 1133 WaitHandle cancelWaitHandle)
1133 { 1134 {
1134 return WorkItem.WaitAll(waitableResults, millisecondsTimeout, exitContext, cancelWaitHandle); 1135 return WorkItem.WaitAll(waitableResults, millisecondsTimeout, exitContext, cancelWaitHandle);
1135 } 1136 }
1136 1137
1137 1138
1138 /// <summary> 1139 /// <summary>
1139 /// Waits for any of the work items in the specified array to complete, cancel, or timeout 1140 /// Waits for any of the work items in the specified array to complete, cancel, or timeout
1140 /// </summary> 1141 /// </summary>
1141 /// <param name="waitableResults">Array of work item result objects</param> 1142 /// <param name="waitableResults">Array of work item result objects</param>
1142 /// <returns> 1143 /// <returns>
1143 /// The array index of the work item result that satisfied the wait, or WaitTimeout if any of the work items has been canceled. 1144 /// The array index of the work item result that satisfied the wait, or WaitTimeout if any of the work items has been canceled.
1144 /// </returns> 1145 /// </returns>
1145 public static int WaitAny( 1146 public static int WaitAny(
1146 IWaitableResult [] waitableResults) 1147 IWaitableResult [] waitableResults)
1147 { 1148 {
1148 return WaitAny(waitableResults, Timeout.Infinite, true); 1149 return WaitAny(waitableResults, Timeout.Infinite, true);
1149 } 1150 }
1150 1151
1151 /// <summary> 1152 /// <summary>
1152 /// Waits for any of the work items in the specified array to complete, cancel, or timeout 1153 /// Waits for any of the work items in the specified array to complete, cancel, or timeout
1153 /// </summary> 1154 /// </summary>
1154 /// <param name="waitableResults">Array of work item result objects</param> 1155 /// <param name="waitableResults">Array of work item result objects</param>
1155 /// <param name="timeout">The number of milliseconds to wait, or a TimeSpan that represents -1 milliseconds to wait indefinitely. </param> 1156 /// <param name="timeout">The number of milliseconds to wait, or a TimeSpan that represents -1 milliseconds to wait indefinitely. </param>
1156 /// <param name="exitContext"> 1157 /// <param name="exitContext">
1157 /// true to exit the synchronization domain for the context before the wait (if in a synchronized context), and reacquire it; otherwise, false. 1158 /// true to exit the synchronization domain for the context before the wait (if in a synchronized context), and reacquire it; otherwise, false.
1158 /// </param> 1159 /// </param>
1159 /// <returns> 1160 /// <returns>
1160 /// The array index of the work item result that satisfied the wait, or WaitTimeout if no work item result satisfied the wait and a time interval equivalent to millisecondsTimeout has passed or the work item has been canceled. 1161 /// The array index of the work item result that satisfied the wait, or WaitTimeout if no work item result satisfied the wait and a time interval equivalent to millisecondsTimeout has passed or the work item has been canceled.
1161 /// </returns> 1162 /// </returns>
1162 public static int WaitAny( 1163 public static int WaitAny(
1163 IWaitableResult[] waitableResults, 1164 IWaitableResult[] waitableResults,
1164 TimeSpan timeout, 1165 TimeSpan timeout,
1165 bool exitContext) 1166 bool exitContext)
1166 { 1167 {
1167 return WaitAny(waitableResults, (int)timeout.TotalMilliseconds, exitContext); 1168 return WaitAny(waitableResults, (int)timeout.TotalMilliseconds, exitContext);
1168 } 1169 }
1169 1170
1170 /// <summary> 1171 /// <summary>
1171 /// Waits for any of the work items in the specified array to complete, cancel, or timeout 1172 /// Waits for any of the work items in the specified array to complete, cancel, or timeout
1172 /// </summary> 1173 /// </summary>
1173 /// <param name="waitableResults">Array of work item result objects</param> 1174 /// <param name="waitableResults">Array of work item result objects</param>
1174 /// <param name="timeout">The number of milliseconds to wait, or a TimeSpan that represents -1 milliseconds to wait indefinitely. </param> 1175 /// <param name="timeout">The number of milliseconds to wait, or a TimeSpan that represents -1 milliseconds to wait indefinitely. </param>
1175 /// <param name="exitContext"> 1176 /// <param name="exitContext">
1176 /// true to exit the synchronization domain for the context before the wait (if in a synchronized context), and reacquire it; otherwise, false. 1177 /// true to exit the synchronization domain for the context before the wait (if in a synchronized context), and reacquire it; otherwise, false.
1177 /// </param> 1178 /// </param>
1178 /// <param name="cancelWaitHandle">A cancel wait handle to interrupt the wait if needed</param> 1179 /// <param name="cancelWaitHandle">A cancel wait handle to interrupt the wait if needed</param>
1179 /// <returns> 1180 /// <returns>
1180 /// The array index of the work item result that satisfied the wait, or WaitTimeout if no work item result satisfied the wait and a time interval equivalent to millisecondsTimeout has passed or the work item has been canceled. 1181 /// The array index of the work item result that satisfied the wait, or WaitTimeout if no work item result satisfied the wait and a time interval equivalent to millisecondsTimeout has passed or the work item has been canceled.
1181 /// </returns> 1182 /// </returns>
1182 public static int WaitAny( 1183 public static int WaitAny(
1183 IWaitableResult [] waitableResults, 1184 IWaitableResult [] waitableResults,
1184 TimeSpan timeout, 1185 TimeSpan timeout,
1185 bool exitContext, 1186 bool exitContext,
1186 WaitHandle cancelWaitHandle) 1187 WaitHandle cancelWaitHandle)
1187 { 1188 {
1188 return WaitAny(waitableResults, (int)timeout.TotalMilliseconds, exitContext, cancelWaitHandle); 1189 return WaitAny(waitableResults, (int)timeout.TotalMilliseconds, exitContext, cancelWaitHandle);
1189 } 1190 }
1190 1191
1191 /// <summary> 1192 /// <summary>
1192 /// Waits for any of the work items in the specified array to complete, cancel, or timeout 1193 /// Waits for any of the work items in the specified array to complete, cancel, or timeout
1193 /// </summary> 1194 /// </summary>
1194 /// <param name="waitableResults">Array of work item result objects</param> 1195 /// <param name="waitableResults">Array of work item result objects</param>
1195 /// <param name="millisecondsTimeout">The number of milliseconds to wait, or Timeout.Infinite (-1) to wait indefinitely.</param> 1196 /// <param name="millisecondsTimeout">The number of milliseconds to wait, or Timeout.Infinite (-1) to wait indefinitely.</param>
1196 /// <param name="exitContext"> 1197 /// <param name="exitContext">
1197 /// true to exit the synchronization domain for the context before the wait (if in a synchronized context), and reacquire it; otherwise, false. 1198 /// true to exit the synchronization domain for the context before the wait (if in a synchronized context), and reacquire it; otherwise, false.
1198 /// </param> 1199 /// </param>
1199 /// <returns> 1200 /// <returns>
1200 /// The array index of the work item result that satisfied the wait, or WaitTimeout if no work item result satisfied the wait and a time interval equivalent to millisecondsTimeout has passed or the work item has been canceled. 1201 /// The array index of the work item result that satisfied the wait, or WaitTimeout if no work item result satisfied the wait and a time interval equivalent to millisecondsTimeout has passed or the work item has been canceled.
1201 /// </returns> 1202 /// </returns>
1202 public static int WaitAny( 1203 public static int WaitAny(
1203 IWaitableResult [] waitableResults, 1204 IWaitableResult [] waitableResults,
1204 int millisecondsTimeout, 1205 int millisecondsTimeout,
1205 bool exitContext) 1206 bool exitContext)
1206 { 1207 {
1207 return WorkItem.WaitAny(waitableResults, millisecondsTimeout, exitContext, null); 1208 return WorkItem.WaitAny(waitableResults, millisecondsTimeout, exitContext, null);
1208 } 1209 }
1209 1210
1210 /// <summary> 1211 /// <summary>
1211 /// Waits for any of the work items in the specified array to complete, cancel, or timeout 1212 /// Waits for any of the work items in the specified array to complete, cancel, or timeout
1212 /// </summary> 1213 /// </summary>
1213 /// <param name="waitableResults">Array of work item result objects</param> 1214 /// <param name="waitableResults">Array of work item result objects</param>
1214 /// <param name="millisecondsTimeout">The number of milliseconds to wait, or Timeout.Infinite (-1) to wait indefinitely.</param> 1215 /// <param name="millisecondsTimeout">The number of milliseconds to wait, or Timeout.Infinite (-1) to wait indefinitely.</param>
1215 /// <param name="exitContext"> 1216 /// <param name="exitContext">
1216 /// true to exit the synchronization domain for the context before the wait (if in a synchronized context), and reacquire it; otherwise, false. 1217 /// true to exit the synchronization domain for the context before the wait (if in a synchronized context), and reacquire it; otherwise, false.
1217 /// </param> 1218 /// </param>
1218 /// <param name="cancelWaitHandle">A cancel wait handle to interrupt the wait if needed</param> 1219 /// <param name="cancelWaitHandle">A cancel wait handle to interrupt the wait if needed</param>
1219 /// <returns> 1220 /// <returns>
1220 /// The array index of the work item result that satisfied the wait, or WaitTimeout if no work item result satisfied the wait and a time interval equivalent to millisecondsTimeout has passed or the work item has been canceled. 1221 /// The array index of the work item result that satisfied the wait, or WaitTimeout if no work item result satisfied the wait and a time interval equivalent to millisecondsTimeout has passed or the work item has been canceled.
1221 /// </returns> 1222 /// </returns>
1222 public static int WaitAny( 1223 public static int WaitAny(
1223 IWaitableResult [] waitableResults, 1224 IWaitableResult [] waitableResults,
1224 int millisecondsTimeout, 1225 int millisecondsTimeout,
1225 bool exitContext, 1226 bool exitContext,
1226 WaitHandle cancelWaitHandle) 1227 WaitHandle cancelWaitHandle)
1227 { 1228 {
1228 return WorkItem.WaitAny(waitableResults, millisecondsTimeout, exitContext, cancelWaitHandle); 1229 return WorkItem.WaitAny(waitableResults, millisecondsTimeout, exitContext, cancelWaitHandle);
1229 } 1230 }
1230 1231
1231 /// <summary> 1232 /// <summary>
1232 /// Creates a new WorkItemsGroup. 1233 /// Creates a new WorkItemsGroup.
1233 /// </summary> 1234 /// </summary>
1234 /// <param name="concurrency">The number of work items that can be run concurrently</param> 1235 /// <param name="concurrency">The number of work items that can be run concurrently</param>
1235 /// <returns>A reference to the WorkItemsGroup</returns> 1236 /// <returns>A reference to the WorkItemsGroup</returns>
1236 public IWorkItemsGroup CreateWorkItemsGroup(int concurrency) 1237 public IWorkItemsGroup CreateWorkItemsGroup(int concurrency)
1237 { 1238 {
1238 IWorkItemsGroup workItemsGroup = new WorkItemsGroup(this, concurrency, _stpStartInfo); 1239 IWorkItemsGroup workItemsGroup = new WorkItemsGroup(this, concurrency, _stpStartInfo);
1239 return workItemsGroup; 1240 return workItemsGroup;
1240 } 1241 }
1241 1242
1242 /// <summary> 1243 /// <summary>
1243 /// Creates a new WorkItemsGroup. 1244 /// Creates a new WorkItemsGroup.
@@ -1245,11 +1246,11 @@ namespace Amib.Threading
1245 /// <param name="concurrency">The number of work items that can be run concurrently</param> 1246 /// <param name="concurrency">The number of work items that can be run concurrently</param>
1246 /// <param name="wigStartInfo">A WorkItemsGroup configuration that overrides the default behavior</param> 1247 /// <param name="wigStartInfo">A WorkItemsGroup configuration that overrides the default behavior</param>
1247 /// <returns>A reference to the WorkItemsGroup</returns> 1248 /// <returns>A reference to the WorkItemsGroup</returns>
1248 public IWorkItemsGroup CreateWorkItemsGroup(int concurrency, WIGStartInfo wigStartInfo) 1249 public IWorkItemsGroup CreateWorkItemsGroup(int concurrency, WIGStartInfo wigStartInfo)
1249 { 1250 {
1250 IWorkItemsGroup workItemsGroup = new WorkItemsGroup(this, concurrency, wigStartInfo); 1251 IWorkItemsGroup workItemsGroup = new WorkItemsGroup(this, concurrency, wigStartInfo);
1251 return workItemsGroup; 1252 return workItemsGroup;
1252 } 1253 }
1253 1254
1254 #region Fire Thread's Events 1255 #region Fire Thread's Events
1255 1256
@@ -1330,22 +1331,22 @@ namespace Amib.Threading
1330 } 1331 }
1331 } 1332 }
1332 1333
1333
1334 1334
1335 #endregion
1336 1335
1337 #region Properties 1336 #endregion
1338 1337
1339 /// <summary> 1338 #region Properties
1340 /// Get/Set the lower limit of threads in the pool. 1339
1341 /// </summary> 1340 /// <summary>
1342 public int MinThreads 1341 /// Get/Set the lower limit of threads in the pool.
1343 { 1342 /// </summary>
1344 get 1343 public int MinThreads
1345 { 1344 {
1346 ValidateNotDisposed(); 1345 get
1347 return _stpStartInfo.MinWorkerThreads; 1346 {
1348 } 1347 ValidateNotDisposed();
1348 return _stpStartInfo.MinWorkerThreads;
1349 }
1349 set 1350 set
1350 { 1351 {
1351 Debug.Assert(value >= 0); 1352 Debug.Assert(value >= 0);
@@ -1357,21 +1358,21 @@ namespace Amib.Threading
1357 _stpStartInfo.MinWorkerThreads = value; 1358 _stpStartInfo.MinWorkerThreads = value;
1358 StartOptimalNumberOfThreads(); 1359 StartOptimalNumberOfThreads();
1359 } 1360 }
1360 } 1361 }
1361 1362
1362 /// <summary> 1363 /// <summary>
1363 /// Get/Set the upper limit of threads in the pool. 1364 /// Get/Set the upper limit of threads in the pool.
1364 /// </summary> 1365 /// </summary>
1365 public int MaxThreads 1366 public int MaxThreads
1366 { 1367 {
1367 get 1368 get
1368 { 1369 {
1369 ValidateNotDisposed(); 1370 ValidateNotDisposed();
1370 return _stpStartInfo.MaxWorkerThreads; 1371 return _stpStartInfo.MaxWorkerThreads;
1371 } 1372 }
1372 1373
1373 set 1374 set
1374 { 1375 {
1375 Debug.Assert(value > 0); 1376 Debug.Assert(value > 0);
1376 Debug.Assert(value >= _stpStartInfo.MinWorkerThreads); 1377 Debug.Assert(value >= _stpStartInfo.MinWorkerThreads);
1377 if (_stpStartInfo.MinWorkerThreads > value) 1378 if (_stpStartInfo.MinWorkerThreads > value)
@@ -1380,32 +1381,32 @@ namespace Amib.Threading
1380 } 1381 }
1381 _stpStartInfo.MaxWorkerThreads = value; 1382 _stpStartInfo.MaxWorkerThreads = value;
1382 StartOptimalNumberOfThreads(); 1383 StartOptimalNumberOfThreads();
1383 } 1384 }
1384 } 1385 }
1385 /// <summary> 1386 /// <summary>
1386 /// Get the number of threads in the thread pool. 1387 /// Get the number of threads in the thread pool.
1387 /// Should be between the lower and the upper limits. 1388 /// Should be between the lower and the upper limits.
1388 /// </summary> 1389 /// </summary>
1389 public int ActiveThreads 1390 public int ActiveThreads
1390 { 1391 {
1391 get 1392 get
1392 { 1393 {
1393 ValidateNotDisposed(); 1394 ValidateNotDisposed();
1394 return _workerThreads.Count; 1395 return _workerThreads.Count;
1395 } 1396 }
1396 } 1397 }
1397 1398
1398 /// <summary> 1399 /// <summary>
1399 /// Get the number of busy (not idle) threads in the thread pool. 1400 /// Get the number of busy (not idle) threads in the thread pool.
1400 /// </summary> 1401 /// </summary>
1401 public int InUseThreads 1402 public int InUseThreads
1402 { 1403 {
1403 get 1404 get
1404 { 1405 {
1405 ValidateNotDisposed(); 1406 ValidateNotDisposed();
1406 return _inUseWorkerThreads; 1407 return _inUseWorkerThreads;
1407 } 1408 }
1408 } 1409 }
1409 1410
1410 /// <summary> 1411 /// <summary>
1411 /// Returns true if the current running work item has been cancelled. 1412 /// Returns true if the current running work item has been cancelled.
@@ -1419,8 +1420,8 @@ namespace Amib.Threading
1419 { 1420 {
1420 return CurrentThreadEntry.CurrentWorkItem.IsCanceled; 1421 return CurrentThreadEntry.CurrentWorkItem.IsCanceled;
1421 } 1422 }
1422 } 1423 }
1423 1424
1424 /// <summary> 1425 /// <summary>
1425 /// Checks if the work item has been cancelled, and if yes then abort the thread. 1426 /// Checks if the work item has been cancelled, and if yes then abort the thread.
1426 /// Can be used with Cancel and timeout 1427 /// Can be used with Cancel and timeout
@@ -1438,16 +1439,16 @@ namespace Amib.Threading
1438 /// </summary> 1439 /// </summary>
1439 public STPStartInfo STPStartInfo 1440 public STPStartInfo STPStartInfo
1440 { 1441 {
1441 get 1442 get
1442 { 1443 {
1443 return _stpStartInfo.AsReadOnly(); 1444 return _stpStartInfo.AsReadOnly();
1444 } 1445 }
1445 } 1446 }
1446 1447
1447 public bool IsShuttingdown 1448 public bool IsShuttingdown
1448 { 1449 {
1449 get { return _shutdown; } 1450 get { return _shutdown; }
1450 } 1451 }
1451 1452
1452 /// <summary> 1453 /// <summary>
1453 /// Return the local calculated performance counters 1454 /// Return the local calculated performance counters
@@ -1477,13 +1478,16 @@ namespace Amib.Threading
1477 _shuttingDownEvent = null; 1478 _shuttingDownEvent = null;
1478 } 1479 }
1479 _workerThreads.Clear(); 1480 _workerThreads.Clear();
1480 1481
1481 if (null != _isIdleWaitHandle) 1482 if (null != _isIdleWaitHandle)
1482 { 1483 {
1483 _isIdleWaitHandle.Close(); 1484 _isIdleWaitHandle.Close();
1484 _isIdleWaitHandle = null; 1485 _isIdleWaitHandle = null;
1485 } 1486 }
1486 1487
1488 if (_stpStartInfo.EnableLocalPerformanceCounters)
1489 _localPCs.Dispose();
1490
1487 _isDisposed = true; 1491 _isDisposed = true;
1488 } 1492 }
1489 } 1493 }
@@ -1503,22 +1507,22 @@ namespace Amib.Threading
1503 /// Get/Set the maximum number of work items that execute cocurrency on the thread pool 1507 /// Get/Set the maximum number of work items that execute cocurrency on the thread pool
1504 /// </summary> 1508 /// </summary>
1505 public override int Concurrency 1509 public override int Concurrency
1506 { 1510 {
1507 get { return MaxThreads; } 1511 get { return MaxThreads; }
1508 set { MaxThreads = value; } 1512 set { MaxThreads = value; }
1509 } 1513 }
1510 1514
1511 /// <summary> 1515 /// <summary>
1512 /// Get the number of work items in the queue. 1516 /// Get the number of work items in the queue.
1513 /// </summary> 1517 /// </summary>
1514 public override int WaitingCallbacks 1518 public override int WaitingCallbacks
1515 { 1519 {
1516 get 1520 get
1517 { 1521 {
1518 ValidateNotDisposed(); 1522 ValidateNotDisposed();
1519 return _workItemsQueue.Count; 1523 return _workItemsQueue.Count;
1520 } 1524 }
1521 } 1525 }
1522 1526
1523 /// <summary> 1527 /// <summary>
1524 /// Get an array with all the state objects of the currently running items. 1528 /// Get an array with all the state objects of the currently running items.
@@ -1538,7 +1542,7 @@ namespace Amib.Threading
1538 get { return _stpStartInfo.AsReadOnly(); } 1542 get { return _stpStartInfo.AsReadOnly(); }
1539 } 1543 }
1540 1544
1541 /// <summary> 1545 /// <summary>
1542 /// Start the thread pool if it was started suspended. 1546 /// Start the thread pool if it was started suspended.
1543 /// If it is already running, this method is ignored. 1547 /// If it is already running, this method is ignored.
1544 /// </summary> 1548 /// </summary>
@@ -1589,7 +1593,7 @@ namespace Amib.Threading
1589 } 1593 }
1590 } 1594 }
1591 1595
1592 /// <summary> 1596 /// <summary>
1593 /// Wait for the thread pool to be idle 1597 /// Wait for the thread pool to be idle
1594 /// </summary> 1598 /// </summary>
1595 public override bool WaitForIdle(int millisecondsTimeout) 1599 public override bool WaitForIdle(int millisecondsTimeout)
@@ -1618,9 +1622,9 @@ namespace Amib.Threading
1618 } 1622 }
1619 } 1623 }
1620 1624
1621 internal override void PreQueueWorkItem() 1625 internal override void PreQueueWorkItem()
1622 { 1626 {
1623 ValidateNotDisposed(); 1627 ValidateNotDisposed();
1624 } 1628 }
1625 1629
1626 #endregion 1630 #endregion
@@ -1672,7 +1676,7 @@ namespace Amib.Threading
1672 ManualResetEvent anActionCompleted = new ManualResetEvent(false); 1676 ManualResetEvent anActionCompleted = new ManualResetEvent(false);
1673 1677
1674 ChoiceIndex choiceIndex = new ChoiceIndex(); 1678 ChoiceIndex choiceIndex = new ChoiceIndex();
1675 1679
1676 int i = 0; 1680 int i = 0;
1677 foreach (Action action in actions) 1681 foreach (Action action in actions)
1678 { 1682 {
@@ -1681,8 +1685,9 @@ namespace Amib.Threading
1681 workItemsGroup.QueueWorkItem(() => { act(); Interlocked.CompareExchange(ref choiceIndex._index, value, -1); anActionCompleted.Set(); }); 1685 workItemsGroup.QueueWorkItem(() => { act(); Interlocked.CompareExchange(ref choiceIndex._index, value, -1); anActionCompleted.Set(); });
1682 ++i; 1686 ++i;
1683 } 1687 }
1684 workItemsGroup.Start(); 1688 workItemsGroup.Start();
1685 anActionCompleted.WaitOne(); 1689 anActionCompleted.WaitOne();
1690 anActionCompleted.Dispose();
1686 1691
1687 return choiceIndex._index; 1692 return choiceIndex._index;
1688 } 1693 }
@@ -1693,7 +1698,7 @@ namespace Amib.Threading
1693 /// </summary> 1698 /// </summary>
1694 /// <param name="actions">Actions to execute</param> 1699 /// <param name="actions">Actions to execute</param>
1695 public int Choice(params Action[] actions) 1700 public int Choice(params Action[] actions)
1696 { 1701 {
1697 return Choice((IEnumerable<Action>)actions); 1702 return Choice((IEnumerable<Action>)actions);
1698 } 1703 }
1699 1704
@@ -1727,6 +1732,6 @@ namespace Amib.Threading
1727 Pipe(pipeState, (IEnumerable<Action<T>>)actions); 1732 Pipe(pipeState, (IEnumerable<Action<T>>)actions);
1728 } 1733 }
1729 #endregion 1734 #endregion
1730 } 1735 }
1731 #endregion 1736 #endregion
1732} 1737}