class/corlib/System.Threading.Tasks/TaskFactory.cs

   1 #if NET_4_0
   2 //
   3 // TaskFactory.cs
   4 //
   5 // Author:
   6 //       Jérémie "Garuma" Laval <jeremie.laval@gmail.com>
   7 //
   8 // Copyright (c) 2009 Jérémie "Garuma" Laval
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining a copy
  11 // of this software and associated documentation files (the "Software"), to deal
  12 // in the Software without restriction, including without limitation the rights
  13 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  14 // copies of the Software, and to permit persons to whom the Software is
  15 // furnished to do so, subject to the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be included in
  18 // all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  21 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  23 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  24 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  25 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  26 // THE SOFTWARE.
  27
  28 using System;
  29 using System.Threading;
  30
  31 namespace System.Threading.Tasks
  32 {
  33
  34         public class TaskFactory
  35         {
  36                 TaskScheduler scheduler;
  37                 TaskCreationOptions options;
  38                 TaskContinuationOptions contOptions;
  39
  40                 #region ctors
  41                 public TaskFactory () : this (TaskScheduler.Current, TaskCreationOptions.None, TaskContinuationOptions.None)
  42                 {
  43                 }
  44
  45                 public TaskFactory (TaskScheduler scheduler) : this (scheduler, TaskCreationOptions.None, TaskContinuationOptions.None)
  46                 {
  47                 }
  48
  49                 public TaskFactory (TaskCreationOptions options, TaskContinuationOptions contOptions)
  50                         : this (TaskScheduler.Current, options, contOptions)
  51                 {
  52                 }
  53
  54                 public TaskFactory (TaskScheduler scheduler, TaskCreationOptions options, TaskContinuationOptions contOptions)
  55                 {
  56                         this.scheduler = scheduler;
  57                         this.options = options;
  58                         this.contOptions = contOptions;
  59                 }
  60                 #endregion
  61
  62                 #region StartNew for Task
  63                 public Task StartNew (Action action)
  64                 {
  65                         return StartNew (action, options, scheduler);
  66                 }
  67
  68                 public Task StartNew (Action action, TaskCreationOptions options)
  69                 {
  70                         return StartNew (action, options, scheduler);
  71                 }
  72
  73                 public Task StartNew (Action action, TaskCreationOptions options, TaskScheduler scheduler)
  74                 {
  75                         return StartNew ((o) => action (), null, options, scheduler);
  76                 }
  77
  78                 public Task StartNew (Action<object> action, object state)
  79                 {
  80                         return StartNew (action, state, options, scheduler);
  81                 }
  82
  83                 public Task StartNew (Action<object> action, object state, TaskCreationOptions options)
  84                 {
  85                         return StartNew (action, state, options, scheduler);
  86                 }
  87
  88                 public Task StartNew (Action<object> action, object state, TaskCreationOptions options, TaskScheduler scheduler)
  89                 {
  90                         Task t = new Task (action, state, options);
  91                         t.Start (scheduler);
  92
  93                         return t;
  94                 }
  95                 #endregion
  96
  97                 #region StartNew for Task<TResult>
  98                 public Task<TResult> StartNew<TResult> (Func<TResult> function)
  99                 {
 100                         return StartNew<TResult> (function, options, scheduler);
 101                 }
 102
 103                 public Task<TResult> StartNew<TResult> (Func<TResult> function, TaskCreationOptions options)
 104                 {
 105                         return StartNew<TResult> (function, options, scheduler);
 106                 }
 107
 108                 public Task<TResult> StartNew<TResult> (Func<TResult> function, TaskCreationOptions options, TaskScheduler scheduler)
 109                 {
 110                         return StartNew<TResult> ((o) => function (), null, options, scheduler);
 111                 }
 112
 113                 public Task<TResult> StartNew<TResult> (Func<object, TResult> function, object state)
 114                 {
 115                         return StartNew<TResult> (function, state, options, scheduler);
 116                 }
 117
 118                 public Task<TResult> StartNew<TResult> (Func<object, TResult> function, object state, TaskCreationOptions options)
 119                 {
 120                         return StartNew<TResult> (function, state, options, scheduler);
 121                 }
 122
 123                 public Task<TResult> StartNew<TResult> (Func<object, TResult> function, object state, TaskCreationOptions options,
 124                                                         TaskScheduler scheduler)
 125                 {
 126                         Task<TResult> t = new Task<TResult> (function, state, options);
 127                         t.Start (scheduler);
 128
 129                         return t;
 130                 }
 131                 #endregion
 132
 133                 #region Continue
 134
 135                 [MonoTODO]
 136                 public Task ContinueWhenAny (Task[] tasks, Action<Task> continuationAction)
 137                 {
 138                         return ContinueWhenAny (tasks, continuationAction, contOptions, scheduler);
 139                 }
 140
 141                 [MonoTODO]
 142                 public Task ContinueWhenAny (Task[] tasks, Action<Task> continuationAction, TaskContinuationOptions continuationOptions)
 143                 {
 144                         return ContinueWhenAny (tasks, continuationAction, continuationOptions, scheduler);
 145                 }
 146
 147                 [MonoTODO]
 148                 public Task ContinueWhenAny (Task[] tasks, Action<Task> continuationAction, TaskContinuationOptions continuationOptions,
 149                                              TaskScheduler scheduler)
 150                 {
 151                         throw new NotImplementedException ();
 152                 }
 153
 154                 [MonoTODO]
 155                 public Task<TResult> ContinueWhenAny<TResult> (Task[] tasks, Func<Task, TResult> continuationAction)
 156                 {
 157                         return ContinueWhenAny (tasks, continuationAction, contOptions);
 158                 }
 159
 160                 [MonoTODO]
 161                 public Task<TResult> ContinueWhenAny<TResult> (Task[] tasks, Func<Task, TResult> continuationAction,
 162                                                                TaskContinuationOptions continuationOptions)
 163                 {
 164                         return ContinueWhenAny (tasks, continuationAction, continuationOptions, scheduler);
 165                 }
 166
 167                 [MonoTODO]
 168                 public Task<TResult> ContinueWhenAny<TResult> (Task[] tasks, Func<Task, TResult> continuationAction,
 169                                                                TaskContinuationOptions continuationOptions,
 170                                                                TaskScheduler scheduler)
 171                 {
 172                         throw new NotImplementedException ();
 173                 }
 174
 175                 public Task ContinueWhenAll (Task[] tasks, Action<Task[]> continuationFunction)
 176                 {
 177                         return ContinueWhenAll (tasks, continuationFunction, contOptions);
 178                 }
 179
 180                 public Task ContinueWhenAll (Task[] tasks, Action<Task[]> continuationFunction,
 181                                              TaskContinuationOptions continuationOptions)
 182                 {
 183                         return ContinueWhenAll (tasks, continuationFunction, continuationOptions, scheduler);
 184                 }
 185
 186                 public Task ContinueWhenAll (Task[] tasks, Action<Task[]> continuationFunction,
 187                                              TaskContinuationOptions continuationOptions, TaskScheduler scheduler)
 188                 {
 189                         CountdownEvent evt = new CountdownEvent (tasks.Length);
 190                         Task cont = new Task ((o) => continuationFunction ((Task[])o), tasks, options);
 191
 192                         foreach (Task t in tasks)
 193                                 t.ContinueWithCore (cont, continuationOptions, scheduler, evt.Signal);
 194
 195                         return cont;
 196                 }
 197
 198
 199                 public Task<TResult> ContinueWhenAll<TResult> (Task[] tasks, Func<Task[], TResult> continuationFunction)
 200                 {
 201                         return ContinueWhenAll<TResult> (tasks, continuationFunction, contOptions);
 202                 }
 203
 204                 public Task<TResult> ContinueWhenAll<TResult> (Task[] tasks, Func<Task[], TResult> continuationFunction,
 205                                                                TaskContinuationOptions continuationOptions)
 206                 {
 207                         return ContinueWhenAll<TResult> (tasks, continuationFunction, continuationOptions, scheduler);
 208                 }
 209
 210                 public Task<TResult> ContinueWhenAll<TResult> (Task[] tasks, Func<Task[], TResult> continuationFunction,
 211                                                                TaskContinuationOptions continuationOptions, TaskScheduler scheduler)
 212                 {
 213                         CountdownEvent evt = new CountdownEvent (tasks.Length);
 214                         Task<TResult> cont = new Task<TResult> ((o) => continuationFunction ((Task[])o), tasks, options);
 215
 216                         foreach (Task t in tasks)
 217                                 t.ContinueWithCore (cont, continuationOptions, scheduler, evt.Signal);
 218
 219                         return cont;
 220                 }
 221
 222                 #endregion
 223
 224                 #region FromAsync
 225                 // For these methods to work we first have to convert the ThreadPool to use Tasks as it
 226                 // is doing in 4.0, then all that is remaining is to identify the Task on which is
 227                 // run the async operation (probably with some additional state in a IAsyncResult subclass)
 228                 // and call its ContinueWith method accordingly
 229
 230                 const string errorMsg = "Mono's thread pool doesn't support this operation yet";
 231
 232                 [MonoLimitation(errorMsg)]
 233                 public Task FromAsync (IAsyncResult asyncResult, Action<IAsyncResult> endMethod)
 234                 {
 235                         return FromAsync (asyncResult, endMethod, options);
 236                 }
 237
 238                 [MonoLimitation(errorMsg)]
 239                 public Task FromAsync (IAsyncResult asyncResult, Action<IAsyncResult> endMethod,
 240                                        TaskCreationOptions creationOptions)
 241                 {
 242                         return FromAsync (asyncResult, endMethod, creationOptions);
 243                 }
 244
 245                 [MonoLimitation(errorMsg)]
 246                 public Task FromAsync (IAsyncResult asyncResult, Action<IAsyncResult> endMethod,
 247                                        TaskCreationOptions creationOptions, TaskScheduler scheduler)
 248                 {
 249                         throw new NotSupportedException (errorMsg);
 250                 }
 251
 252                 [MonoLimitation(errorMsg)]
 253                 public Task<TResult> FromAsync<TResult> (IAsyncResult asyncResult, Func<IAsyncResult, TResult> endMethod)
 254                 {
 255                         return FromAsync<TResult> (asyncResult, endMethod, options);
 256                 }
 257
 258                 [MonoLimitation(errorMsg)]
 259                 public Task<TResult> FromAsync<TResult> (IAsyncResult asyncResult, Func<IAsyncResult, TResult> endMethod,
 260                                                          TaskCreationOptions creationOptions)
 261                 {
 262                         return FromAsync<TResult> (asyncResult, endMethod, creationOptions);
 263                 }
 264
 265                 [MonoLimitation(errorMsg)]
 266                 public Task<TResult> FromAsync<TResult> (IAsyncResult asyncResult, Func<IAsyncResult, TResult> endMethod,
 267                                                          TaskCreationOptions creationOptions, TaskScheduler scheduler)
 268                 {
 269                         throw new NotSupportedException (errorMsg);
 270                 }
 271
 272
 273                 [MonoLimitation(errorMsg)]
 274                 public Task FromAsync (Func<AsyncCallback, Object, IAsyncResult> beginMethod, Action<IAsyncResult> endMethod,
 275                                        object state)
 276                 {
 277                         return FromAsync<object> ((a, c, o) => beginMethod (c, o), endMethod, state, options);
 278                 }
 279
 280                 [MonoLimitation(errorMsg)]
 281                 public Task FromAsync (Func<AsyncCallback, Object, IAsyncResult> beginMethod, Action<IAsyncResult> endMethod,
 282                                        object state, TaskCreationOptions creationOptions)
 283                 {
 284                         return FromAsync<object> ((a, c, o) => beginMethod (c, o), endMethod, state, creationOptions);
 285                 }
 286
 287                 [MonoLimitation(errorMsg)]
 288                 public Task FromAsync<TArg1> (Func<TArg1, AsyncCallback, Object, IAsyncResult> beginMethod, Action<IAsyncResult> endMethod,
 289                                               TArg1 arg1, object state)
 290                 {
 291                         throw new NotSupportedException (errorMsg);
 292                 }
 293
 294                 [MonoLimitation(errorMsg)]
 295                 public Task FromAsync<TArg1> (Func<TArg1, AsyncCallback, Object, IAsyncResult> beginMethod, Action<IAsyncResult> endMethod,
 296                                               TArg1 arg1, object state, TaskCreationOptions creationOptions)
 297                 {
 298                         throw new NotSupportedException (errorMsg);
 299                 }
 300
 301                 [MonoLimitation(errorMsg)]
 302                 public Task FromAsync<TArg1, TArg2> (Func<TArg1, TArg2, AsyncCallback, Object, IAsyncResult> beginMethod, Action<IAsyncResult> endMethod,
 303                                                      TArg1 arg1, TArg2 arg2, object state)
 304                 {
 305                         throw new NotSupportedException (errorMsg);
 306                 }
 307
 308                 [MonoLimitation(errorMsg)]
 309                 public Task FromAsync<TArg1, TArg2> (Func<TArg1, TArg2, AsyncCallback, Object, IAsyncResult> beginMethod, Action<IAsyncResult> endMethod,
 310                                                      TArg1 arg1, TArg2 arg2, object state, TaskCreationOptions creationOptions)
 311                 {
 312                         throw new NotSupportedException (errorMsg);
 313                 }
 314
 315                 [MonoLimitation(errorMsg)]
 316                 public Task FromAsync<TArg1, TArg2, TArg3> (Func<TArg1, TArg2, TArg3, AsyncCallback, Object, IAsyncResult> beginMethod, Action<IAsyncResult> endMethod,
 317                                                             TArg1 arg1, TArg2 arg2, TArg3 arg3, object state)
 318                 {
 319                         throw new NotSupportedException (errorMsg);
 320                 }
 321
 322                 [MonoLimitation(errorMsg)]
 323                 public Task FromAsync<TArg1, TArg2, TArg3> (Func<TArg1, TArg2, TArg3, AsyncCallback, Object, IAsyncResult> beginMethod, Action<IAsyncResult> endMethod,
 324                                                             TArg1 arg1, TArg2 arg2, TArg3 arg3, object state, TaskCreationOptions creationOptions)
 325                 {
 326                         throw new NotSupportedException (errorMsg);
 327                 }
 328
 329                 [MonoLimitation(errorMsg)]
 330                 public Task<TResult> FromAsync<TResult> (Func<AsyncCallback, Object, IAsyncResult> beginMethod,
 331                                                          Func<IAsyncResult, TResult> endMethod,
 332                                                          object state)
 333                 {
 334                         throw new NotSupportedException (errorMsg);
 335                 }
 336
 337                 [MonoLimitation(errorMsg)]
 338                 public Task<TResult> FromAsync<TResult> (Func<AsyncCallback, Object, IAsyncResult> beginMethod,
 339                                                          Func<IAsyncResult, TResult> endMethod,
 340                                        object state, TaskCreationOptions creationOptions)
 341                 {
 342                         throw new NotSupportedException (errorMsg);
 343                 }
 344
 345                 [MonoLimitation(errorMsg)]
 346                 public Task<TResult> FromAsync<TArg1, TResult> (Func<TArg1, AsyncCallback, Object, IAsyncResult> beginMethod,
 347                                                                 Func<IAsyncResult, TResult> endMethod,
 348                                                                 TArg1 arg1, object state)
 349                 {
 350                         throw new NotSupportedException (errorMsg);
 351                 }
 352
 353                 [MonoLimitation(errorMsg)]
 354                 public Task<TResult> FromAsync<TArg1, TResult> (Func<TArg1, AsyncCallback, Object, IAsyncResult> beginMethod,
 355                                                              Func<IAsyncResult, TResult> endMethod,
 356                                                              TArg1 arg1, object state, TaskCreationOptions creationOptions)
 357                 {
 358                         throw new NotSupportedException (errorMsg);
 359                 }
 360
 361                 [MonoLimitation(errorMsg)]
 362                 public Task<TResult> FromAsync<TArg1, TArg2, TResult> (Func<TArg1, TArg2, AsyncCallback, Object, IAsyncResult> beginMethod,
 363                                                                        Func<IAsyncResult, TResult> endMethod,
 364                                                                        TArg1 arg1, TArg2 arg2, object state)
 365                 {
 366                         throw new NotSupportedException (errorMsg);
 367                 }
 368
 369                 [MonoLimitation(errorMsg)]
 370                 public Task<TResult> FromAsync<TArg1, TArg2, TResult> (Func<TArg1, TArg2, AsyncCallback, Object, IAsyncResult> beginMethod,
 371                                                                        Func<IAsyncResult, TResult> endMethod,
 372                                                                        TArg1 arg1, TArg2 arg2, object state, TaskCreationOptions creationOptions)
 373                 {
 374                         throw new NotSupportedException (errorMsg);
 375                 }
 376
 377                 [MonoLimitation(errorMsg)]
 378                 public Task<TResult> FromAsync<TArg1, TArg2, TArg3, TResult> (Func<TArg1, TArg2, TArg3, AsyncCallback, Object, IAsyncResult> beginMethod,
 379                                                                               Func<IAsyncResult, TResult> endMethod,
 380                                                                               TArg1 arg1, TArg2 arg2, TArg3 arg3, object state)
 381                 {
 382                         throw new NotSupportedException (errorMsg);
 383                 }
 384
 385                 [MonoLimitation(errorMsg)]
 386                 public Task<TResult> FromAsync<TArg1, TArg2, TArg3, TResult> (Func<TArg1, TArg2, TArg3, AsyncCallback, Object, IAsyncResult> beginMethod,
 387                                                                               Func<IAsyncResult, TResult> endMethod,
 388                                                                               TArg1 arg1, TArg2 arg2, TArg3 arg3, object state,
 389                                                                               TaskCreationOptions creationOptions)
 390                 {
 391                         throw new NotSupportedException (errorMsg);
 392                 }
 393                 #endregion
 394
 395                 public TaskScheduler Scheduler {
 396                         get {
 397                                 return scheduler;
 398                         }
 399                 }
 400
 401                 public TaskContinuationOptions ContinuationOptions {
 402                         get {
 403                                 return contOptions;
 404                         }
 405                 }
 406
 407                 public TaskCreationOptions CreationOptions {
 408                         get {
 409                                 return options;
 410                         }
 411                 }
 412         }
 413
 414         public class TaskFactory<TResult>
 415         {
 416                 TaskScheduler scheduler;
 417                 TaskCreationOptions options;
 418                 TaskContinuationOptions contOptions;
 419
 420                 TaskFactory parent;
 421
 422                 #region ctors
 423                 public TaskFactory () : this (TaskScheduler.Current, TaskCreationOptions.None, TaskContinuationOptions.None)
 424                 {
 425                 }
 426
 427                 public TaskFactory (TaskScheduler scheduler) : this (scheduler, TaskCreationOptions.None, TaskContinuationOptions.None)
 428                 {
 429                 }
 430
 431                 public TaskFactory (TaskCreationOptions options, TaskContinuationOptions contOptions)
 432                         : this (TaskScheduler.Current, options, contOptions)
 433                 {
 434                 }
 435
 436                 public TaskFactory (TaskScheduler scheduler, TaskCreationOptions options, TaskContinuationOptions contOptions)
 437                 {
 438                         this.scheduler = scheduler;
 439                         this.options = options;
 440                         this.contOptions = contOptions;
 441                         this.parent = new TaskFactory (scheduler, options, contOptions);
 442                 }
 443                 #endregion
 444
 445                 #region StartNew for Task<TResult>
 446                 public Task<TResult> StartNew (Func<TResult> function)
 447                 {
 448                         return StartNew (function, options, scheduler);
 449                 }
 450
 451                 public Task<TResult> StartNew (Func<TResult> function, TaskCreationOptions options)
 452                 {
 453                         return StartNew (function, options, scheduler);
 454                 }
 455
 456                 public Task<TResult> StartNew (Func<TResult> function, TaskCreationOptions options, TaskScheduler scheduler)
 457                 {
 458                         return StartNew ((o) => function (), null, options, scheduler);
 459                 }
 460
 461                 public Task<TResult> StartNew (Func<object, TResult> function, object state)
 462                 {
 463                         return StartNew (function, state, options, scheduler);
 464                 }
 465
 466                 public Task<TResult> StartNew (Func<object, TResult> function, object state, TaskCreationOptions options)
 467                 {
 468                         return StartNew (function, state, options, scheduler);
 469                 }
 470
 471                 public Task<TResult> StartNew (Func<object, TResult> function, object state, TaskCreationOptions options,
 472                                                TaskScheduler scheduler)
 473                 {
 474                         return parent.StartNew<TResult> (function, state, options, scheduler);
 475                 }
 476                 #endregion
 477
 478                 #region Continue
 479                 [MonoTODO]
 480                 public Task ContinueWhenAny (Task<TResult>[] tasks, Action<Task<TResult>> continuationAction)
 481                 {
 482                         return ContinueWhenAny (tasks, continuationAction, contOptions, scheduler);
 483                 }
 484
 485                 [MonoTODO]
 486                 public Task ContinueWhenAny (Task<TResult>[] tasks, Action<Task<TResult>> continuationAction,
 487                                              TaskContinuationOptions continuationOptions)
 488                 {
 489                         return ContinueWhenAny (tasks, continuationAction, continuationOptions, scheduler);
 490                 }
 491
 492                 [MonoTODO]
 493                 public Task ContinueWhenAny (Task<TResult>[] tasks, Action<Task<TResult>> continuationAction,
 494                                              TaskContinuationOptions continuationOptions,
 495                                              TaskScheduler scheduler)
 496                 {
 497                         throw new NotImplementedException ();
 498                 }
 499
 500                 [MonoTODO]
 501                 public Task<TNewResult> ContinueWhenAny<TNewResult> (Task<TResult>[] tasks, Func<Task<TResult>, TNewResult> continuationAction)
 502                 {
 503                         return ContinueWhenAny (tasks, continuationAction, contOptions);
 504                 }
 505
 506                 [MonoTODO]
 507                 public Task<TNewResult> ContinueWhenAny<TNewResult> (Task<TResult>[] tasks, Func<Task<TResult>, TNewResult> continuationAction,
 508                                                                      TaskContinuationOptions continuationOptions)
 509                 {
 510                         return ContinueWhenAny (tasks, continuationAction, continuationOptions, scheduler);
 511                 }
 512
 513                 [MonoTODO]
 514                 public Task<TNewResult> ContinueWhenAny<TNewResult> (Task<TResult>[] tasks, Func<Task<TResult>, TNewResult> continuationAction,
 515                                                                      TaskContinuationOptions continuationOptions,
 516                                                                      TaskScheduler scheduler)
 517                 {
 518                         throw new NotImplementedException ();
 519                 }
 520
 521                 public Task ContinueWhenAll (Task<TResult>[] tasks, Action<Task<TResult>[]> continuationFunction)
 522                 {
 523                         return ContinueWhenAll (tasks, continuationFunction, contOptions);
 524                 }
 525
 526                 public Task ContinueWhenAll (Task<TResult>[] tasks, Action<Task<TResult>[]> continuationFunction,
 527                                              TaskContinuationOptions continuationOptions)
 528                 {
 529                         return ContinueWhenAll (tasks, continuationFunction, continuationOptions, scheduler);
 530                 }
 531
 532                 public Task ContinueWhenAll (Task<TResult>[] tasks, Action<Task<TResult>[]> continuationFunction,
 533                                              TaskContinuationOptions continuationOptions, TaskScheduler scheduler)
 534                 {
 535                         CountdownEvent evt = new CountdownEvent (tasks.Length);
 536                         Task cont = new Task ((o) => continuationFunction ((Task<TResult>[])o), tasks, options);
 537
 538                         foreach (Task t in tasks)
 539                                 t.ContinueWithCore (cont, continuationOptions, scheduler, evt.Signal);
 540
 541                         return cont;
 542                 }
 543
 544                 public Task<TNewResult> ContinueWhenAll<TNewResult> (Task<TResult>[] tasks,
 545                                                                      Func<Task<TResult>[], TNewResult> continuationFunction)
 546                 {
 547                         return ContinueWhenAll (tasks, continuationFunction, contOptions);
 548                 }
 549
 550                 public Task<TNewResult> ContinueWhenAll<TNewResult> (Task<TResult>[] tasks,
 551                                                                      Func<Task<TResult>[], TNewResult> continuationFunction,
 552                                                                      TaskContinuationOptions continuationOptions)
 553                 {
 554                         return ContinueWhenAll (tasks, continuationFunction, continuationOptions, scheduler);
 555                 }
 556
 557                 public Task<TNewResult> ContinueWhenAll<TNewResult> (Task<TResult>[] tasks,
 558                                                                      Func<Task<TResult>[], TNewResult> continuationFunction,
 559                                                                      TaskContinuationOptions continuationOptions, TaskScheduler scheduler)
 560                 {
 561                         CountdownEvent evt = new CountdownEvent (tasks.Length);
 562                         Task<TNewResult> cont = new Task<TNewResult> ((o) => continuationFunction ((Task<TResult>[])o), tasks, options);
 563
 564                         foreach (Task t in tasks)
 565                                 t.ContinueWithCore (cont, continuationOptions, scheduler, evt.Signal);
 566
 567                         return cont;
 568                 }
 569
 570                 #endregion
 571
 572                 #region FromAsync
 573                 const string errorMsg = "Mono's thread pool doesn't support this operation yet";
 574
 575                 [MonoLimitation(errorMsg)]
 576                 public Task<TResult> FromAsync (IAsyncResult asyncResult, Func<IAsyncResult, TResult> endMethod)
 577                 {
 578                         return FromAsync (asyncResult, endMethod, options);
 579                 }
 580
 581                 [MonoLimitation(errorMsg)]
 582                 public Task<TResult> FromAsync (IAsyncResult asyncResult, Func<IAsyncResult, TResult> endMethod,
 583                                                 TaskCreationOptions creationOptions)
 584                 {
 585                         return FromAsync (asyncResult, endMethod, creationOptions);
 586                 }
 587
 588                 [MonoLimitation(errorMsg)]
 589                 public Task<TResult> FromAsync (IAsyncResult asyncResult, Func<IAsyncResult, TResult> endMethod,
 590                                                 TaskCreationOptions creationOptions, TaskScheduler scheduler)
 591                 {
 592                         throw new NotSupportedException (errorMsg);
 593                 }
 594
 595                 [MonoLimitation(errorMsg)]
 596                 public Task<TResult> FromAsync (Func<AsyncCallback, Object, IAsyncResult> beginMethod,
 597                                                 Func<IAsyncResult, TResult> endMethod,
 598                                                 object state)
 599                 {
 600                         throw new NotSupportedException (errorMsg);
 601                 }
 602
 603                 [MonoLimitation(errorMsg)]
 604                 public Task<TResult> FromAsync (Func<AsyncCallback, Object, IAsyncResult> beginMethod,
 605                                                 Func<IAsyncResult, TResult> endMethod,
 606                                                 object state, TaskCreationOptions creationOptions)
 607                 {
 608                         throw new NotSupportedException (errorMsg);
 609                 }
 610
 611                 [MonoLimitation(errorMsg)]
 612                 public Task<TResult> FromAsync<TArg1> (Func<TArg1, AsyncCallback, Object, IAsyncResult> beginMethod,
 613                                                        Func<IAsyncResult, TResult> endMethod,
 614                                                        TArg1 arg1, object state)
 615                 {
 616                         throw new NotSupportedException (errorMsg);
 617                 }
 618
 619                 [MonoLimitation(errorMsg)]
 620                 public Task<TResult> FromAsync<TArg1> (Func<TArg1, AsyncCallback, Object, IAsyncResult> beginMethod,
 621                                                        Func<IAsyncResult, TResult> endMethod,
 622                                                        TArg1 arg1, object state, TaskCreationOptions creationOptions)
 623                 {
 624                         throw new NotSupportedException (errorMsg);
 625                 }
 626
 627                 [MonoLimitation(errorMsg)]
 628                 public Task<TResult> FromAsync<TArg1, TArg2> (Func<TArg1, TArg2, AsyncCallback, Object, IAsyncResult> beginMethod,
 629                                                               Func<IAsyncResult, TResult> endMethod,
 630                                                               TArg1 arg1, TArg2 arg2, object state)
 631                 {
 632                         throw new NotSupportedException (errorMsg);
 633                 }
 634
 635                 [MonoLimitation(errorMsg)]
 636                 public Task<TResult> FromAsync<TArg1, TArg2> (Func<TArg1, TArg2, AsyncCallback, Object, IAsyncResult> beginMethod,
 637                                                               Func<IAsyncResult, TResult> endMethod,
 638                                                               TArg1 arg1, TArg2 arg2, object state, TaskCreationOptions creationOptions)
 639                 {
 640                         throw new NotSupportedException (errorMsg);
 641                 }
 642
 643                 [MonoLimitation(errorMsg)]
 644                 public Task<TResult> FromAsync<TArg1, TArg2, TArg3> (Func<TArg1, TArg2, TArg3, AsyncCallback, Object, IAsyncResult> beginMethod,
 645                                                                      Func<IAsyncResult, TResult> endMethod,
 646                                                                      TArg1 arg1, TArg2 arg2, TArg3 arg3, object state)
 647                 {
 648                         throw new NotSupportedException (errorMsg);
 649                 }
 650
 651                 [MonoLimitation(errorMsg)]
 652                 public Task<TResult> FromAsync<TArg1, TArg2, TArg3> (Func<TArg1, TArg2, TArg3, AsyncCallback, Object, IAsyncResult> beginMethod,
 653                                                                      Func<IAsyncResult, TResult> endMethod,
 654                                                                      TArg1 arg1, TArg2 arg2, TArg3 arg3, object state,
 655                                                                      TaskCreationOptions creationOptions)
 656                 {
 657                         throw new NotSupportedException (errorMsg);
 658                 }
 659                 #endregion
 660
 661                 public TaskScheduler Scheduler {
 662                         get {
 663                                 return scheduler;
 664                         }
 665                 }
 666
 667                 public TaskContinuationOptions ContinuationOptions {
 668                         get {
 669                                 return contOptions;
 670                         }
 671                 }
 672
 673                 public TaskCreationOptions CreationOptions {
 674                         get {
 675                                 return options;
 676                         }
 677                 }
 678         }
 679 }
 680 #endif