dali/internal/system/common/async-task-manager-impl.cpp

   1 /*
   2  * Copyright (c) 2023 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  *
  16  */
  17
  18 // CLASS HEADER
  19 #include <dali/internal/system/common/async-task-manager-impl.h>
  20
  21 // EXTERNAL INCLUDES
  22 #include <dali/devel-api/adaptor-framework/environment-variable.h>
  23 #include <dali/devel-api/adaptor-framework/thread-settings.h>
  24 #include <dali/devel-api/common/singleton-service.h>
  25 #include <dali/integration-api/adaptor-framework/adaptor.h>
  26 #include <dali/integration-api/debug.h>
  27
  28 #include <unordered_map>
  29
  30 namespace Dali
  31 {
  32 namespace Internal
  33 {
  34 namespace Adaptor
  35 {
  36 namespace
  37 {
  38 constexpr auto DEFAULT_NUMBER_OF_ASYNC_THREADS = size_t{8u};
  39 constexpr auto NUMBER_OF_ASYNC_THREADS_ENV     = "DALI_ASYNC_MANAGER_THREAD_POOL_SIZE";
  40
  41 // The number of threads for low priority task.
  42 constexpr auto DEFAULT_NUMBER_OF_LOW_PRIORITY_THREADS = size_t{6u};
  43 constexpr auto NUMBER_OF_LOW_PRIORITY_THREADS_ENV     = "DALI_ASYNC_MANAGER_LOW_PRIORITY_THREAD_POOL_SIZE";
  44
  45 size_t GetNumberOfThreads(const char* environmentVariable, size_t defaultValue)
  46 {
  47   auto           numberString          = EnvironmentVariable::GetEnvironmentVariable(environmentVariable);
  48   auto           numberOfThreads       = numberString ? std::strtoul(numberString, nullptr, 10) : 0;
  49   constexpr auto MAX_NUMBER_OF_THREADS = 16u;
  50   DALI_ASSERT_DEBUG(numberOfThreads <= MAX_NUMBER_OF_THREADS);
  51   return (numberOfThreads > 0 && numberOfThreads <= MAX_NUMBER_OF_THREADS) ? numberOfThreads : defaultValue;
  52 }
  53
  54 size_t GetNumberOfLowPriorityThreads(const char* environmentVariable, size_t defaultValue, size_t maxValue)
  55 {
  56   auto numberString    = EnvironmentVariable::GetEnvironmentVariable(environmentVariable);
  57   auto numberOfThreads = numberString ? std::strtoul(numberString, nullptr, 10) : 0;
  58   DALI_ASSERT_DEBUG(numberOfThreads <= maxValue);
  59   return (numberOfThreads > 0 && numberOfThreads <= maxValue) ? numberOfThreads : std::min(defaultValue, maxValue);
  60 }
  61
  62 #if defined(DEBUG_ENABLED)
  63 Debug::Filter* gAsyncTasksManagerLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_ASYNC_TASK_MANAGER");
  64
  65 uint32_t gThreadId = 0u; // Only for debug
  66 #endif
  67
  68 } // unnamed namespace
  69
  70 // AsyncTaskThread
  71
  72 AsyncTaskThread::AsyncTaskThread(AsyncTaskManager& asyncTaskManager)
  73 : mConditionalWait(),
  74   mAsyncTaskManager(asyncTaskManager),
  75   mLogFactory(Dali::Adaptor::Get().GetLogFactory()),
  76   mDestroyThread(false),
  77   mIsThreadStarted(false),
  78   mIsThreadIdle(true)
  79 {
  80 }
  81
  82 AsyncTaskThread::~AsyncTaskThread()
  83 {
  84   // Stop the thread
  85   {
  86     ConditionalWait::ScopedLock lock(mConditionalWait);
  87     mDestroyThread = true;
  88     mConditionalWait.Notify(lock);
  89   }
  90
  91   Join();
  92 }
  93
  94 bool AsyncTaskThread::Request()
  95 {
  96   if(!mIsThreadStarted)
  97   {
  98     Start();
  99     mIsThreadStarted = true;
 100   }
 101
 102   {
 103     // Lock while adding task to the queue
 104     ConditionalWait::ScopedLock lock(mConditionalWait);
 105
 106     if(mIsThreadIdle)
 107     {
 108       mIsThreadIdle = false;
 109
 110       // wake up the thread
 111       mConditionalWait.Notify(lock);
 112       return true;
 113     }
 114   }
 115
 116   return false;
 117 }
 118
 119 void AsyncTaskThread::Run()
 120 {
 121 #if defined(DEBUG_ENABLED)
 122   uint32_t threadId = gThreadId++;
 123   {
 124     char temp[100];
 125     snprintf(temp, 100, "AsyncTaskThread[%u]", threadId);
 126     SetThreadName(temp);
 127   }
 128 #else
 129   SetThreadName("AsyncTaskThread");
 130 #endif
 131   mLogFactory.InstallLogFunction();
 132
 133   while(!mDestroyThread)
 134   {
 135     AsyncTaskPtr task = mAsyncTaskManager.PopNextTaskToProcess();
 136     if(!task)
 137     {
 138       ConditionalWait::ScopedLock lock(mConditionalWait);
 139       if(!mDestroyThread)
 140       {
 141         mIsThreadIdle = true;
 142         DALI_LOG_INFO(gAsyncTasksManagerLogFilter, Debug::General, "Thread[%u] wait\n", threadId);
 143         mConditionalWait.Wait(lock);
 144         DALI_LOG_INFO(gAsyncTasksManagerLogFilter, Debug::General, "Thread[%u] awake\n", threadId);
 145       }
 146     }
 147     else
 148     {
 149       DALI_LOG_INFO(gAsyncTasksManagerLogFilter, Debug::General, "Thread[%u] Process task [%p]\n", threadId, task.Get());
 150       task->Process();
 151       DALI_LOG_INFO(gAsyncTasksManagerLogFilter, Debug::General, "Thread[%u] Complete task [%p]\n", threadId, task.Get());
 152       if(!mDestroyThread)
 153       {
 154         mAsyncTaskManager.CompleteTask(task);
 155       }
 156     }
 157   }
 158 }
 159
 160 // AsyncTaskManager::CacheImpl
 161
 162 struct AsyncTaskManager::CacheImpl
 163 {
 164   CacheImpl(AsyncTaskManager& manager)
 165   : mManager(manager)
 166   {
 167   }
 168
 169 public:
 170   // Insert / Erase task cache API.
 171
 172   /**
 173    * @brief Insert cache that input task.
 174    * @pre Mutex be locked.
 175    */
 176   template<typename CacheContainer, typename Iterator>
 177   static void InsertTaskCache(CacheContainer& cacheMap, AsyncTaskPtr task, Iterator iterator)
 178   {
 179     auto& cacheContainer = cacheMap[task.Get()]; // Get or Create cache container.
 180     cacheContainer.insert(cacheContainer.end(), iterator);
 181   }
 182
 183   /**
 184    * @brief Erase cache that input task.
 185    * @pre Mutex be locked.
 186    */
 187   template<typename CacheContainer, typename Iterator>
 188   static void EraseTaskCache(CacheContainer& cacheMap, AsyncTaskPtr task, Iterator iterator)
 189   {
 190     auto mapIter = cacheMap.find(task.Get());
 191     if(mapIter != cacheMap.end())
 192     {
 193       auto& cacheContainer = (*mapIter).second;
 194       auto  cacheIter      = std::find(cacheContainer.begin(), cacheContainer.end(), iterator);
 195
 196       if(cacheIter != cacheContainer.end())
 197       {
 198         cacheContainer.erase(cacheIter);
 199         if(cacheContainer.empty())
 200         {
 201           cacheMap.erase(mapIter);
 202         }
 203       }
 204     }
 205   }
 206
 207   /**
 208    * @brief Erase all cache that input task.
 209    * @pre Mutex be locked.
 210    */
 211   template<typename CacheContainer>
 212   static void EraseAllTaskCache(CacheContainer& cacheMap, AsyncTaskPtr task)
 213   {
 214     auto mapIter = cacheMap.find(task.Get());
 215     if(mapIter != cacheMap.end())
 216     {
 217       cacheMap.erase(mapIter);
 218     }
 219   }
 220
 221 public:
 222   AsyncTaskManager& mManager; ///< Owner of this CacheImpl.
 223
 224   // Keep cache iterators as list since we take tasks by FIFO as default.
 225   using TaskCacheContainer        = std::unordered_map<const AsyncTask*, std::list<AsyncTaskContainer::iterator>>;
 226   using RunningTaskCacheContainer = std::unordered_map<const AsyncTask*, std::list<AsyncRunningTaskContainer::iterator>>;
 227
 228   TaskCacheContainer        mWaitingTasksCache;   ///< The cache of tasks and iterator for waiting to async process. Must be locked under mWaitingTasksMutex.
 229   RunningTaskCacheContainer mRunningTasksCache;   ///< The cache of tasks and iterator for running tasks. Must be locked under mRunningTasksMutex.
 230   TaskCacheContainer        mCompletedTasksCache; ///< The cache of tasks and iterator for completed async process. Must be locked under mCompletedTasksMutex.
 231 };
 232
 233 // AsyncTaskManager
 234
 235 Dali::AsyncTaskManager AsyncTaskManager::Get()
 236 {
 237   Dali::AsyncTaskManager manager;
 238   SingletonService       singletonService(SingletonService::Get());
 239   if(singletonService)
 240   {
 241     // Check whether the async task manager is already created
 242     Dali::BaseHandle handle = singletonService.GetSingleton(typeid(Dali::AsyncTaskManager));
 243     if(handle)
 244     {
 245       // If so, downcast the handle of singleton
 246       manager = Dali::AsyncTaskManager(dynamic_cast<Internal::Adaptor::AsyncTaskManager*>(handle.GetObjectPtr()));
 247     }
 248
 249     if(!manager)
 250     {
 251       // If not, create the async task manager and register it as a singleton
 252       Internal::Adaptor::AsyncTaskManager* internalAsyncTaskManager = new Internal::Adaptor::AsyncTaskManager();
 253       manager                                                       = Dali::AsyncTaskManager(internalAsyncTaskManager);
 254       singletonService.Register(typeid(manager), manager);
 255     }
 256   }
 257   return manager;
 258 }
 259
 260 AsyncTaskManager::AsyncTaskManager()
 261 : mTasks(GetNumberOfThreads(NUMBER_OF_ASYNC_THREADS_ENV, DEFAULT_NUMBER_OF_ASYNC_THREADS), [&]() { return TaskHelper(*this); }),
 262   mAvaliableLowPriorityTaskCounts(GetNumberOfLowPriorityThreads(NUMBER_OF_LOW_PRIORITY_THREADS_ENV, DEFAULT_NUMBER_OF_LOW_PRIORITY_THREADS, mTasks.GetElementCount())),
 263   mWaitingHighProirityTaskCounts(0u),
 264   mCacheImpl(new CacheImpl(*this)),
 265   mTrigger(new EventThreadCallback(MakeCallback(this, &AsyncTaskManager::TasksCompleted))),
 266   mProcessorRegistered(false)
 267 {
 268 }
 269
 270 AsyncTaskManager::~AsyncTaskManager()
 271 {
 272   if(mProcessorRegistered && Dali::Adaptor::IsAvailable())
 273   {
 274     mProcessorRegistered = false;
 275     Dali::Adaptor::Get().UnregisterProcessor(*this);
 276   }
 277
 278   mTasks.Clear();
 279 }
 280
 281 void AsyncTaskManager::AddTask(AsyncTaskPtr task)
 282 {
 283   if(task)
 284   {
 285     // Lock while adding task to the queue
 286     Mutex::ScopedLock lock(mWaitingTasksMutex);
 287
 288     DALI_LOG_INFO(gAsyncTasksManagerLogFilter, Debug::Verbose, "AddTask [%p]\n", task.Get());
 289
 290     // push back into waiting queue.
 291     auto waitingIter = mWaitingTasks.insert(mWaitingTasks.end(), task);
 292     CacheImpl::InsertTaskCache(mCacheImpl->mWaitingTasksCache, task, waitingIter);
 293
 294     if(task->GetPriorityType() == AsyncTask::PriorityType::HIGH)
 295     {
 296       // Increase the number of waiting tasks for high priority.
 297       ++mWaitingHighProirityTaskCounts;
 298     }
 299
 300     {
 301       // For thread safety
 302       Mutex::ScopedLock lock(mRunningTasksMutex); // We can lock this mutex under mWaitingTasksMutex.
 303
 304       // Finish all Running threads are working
 305       if(mRunningTasks.size() >= mTasks.GetElementCount())
 306       {
 307         return;
 308       }
 309     }
 310   }
 311
 312   size_t count = mTasks.GetElementCount();
 313   size_t index = 0;
 314   while(index++ < count)
 315   {
 316     auto processHelperIt = mTasks.GetNext();
 317     DALI_ASSERT_ALWAYS(processHelperIt != mTasks.End());
 318     if(processHelperIt->Request())
 319     {
 320       break;
 321     }
 322     // If all threads are busy, then it's ok just to push the task because they will try to get the next job.
 323   }
 324
 325   // Register Process (Since mTrigger execute too late timing if event thread running a lots of events.)
 326   if(!mProcessorRegistered && Dali::Adaptor::IsAvailable())
 327   {
 328     Dali::Adaptor::Get().RegisterProcessor(*this);
 329     mProcessorRegistered = true;
 330   }
 331
 332   return;
 333 }
 334
 335 void AsyncTaskManager::RemoveTask(AsyncTaskPtr task)
 336 {
 337   if(task)
 338   {
 339     DALI_LOG_INFO(gAsyncTasksManagerLogFilter, Debug::Verbose, "RemoveTask [%p]\n", task.Get());
 340
 341     // Check whether we need to unregister processor.
 342     // If there is some non-empty queue exist, we don't need to unregister processor.
 343     bool needCheckUnregisterProcessor = true;
 344
 345     {
 346       // Lock while remove task from the queue
 347       Mutex::ScopedLock lock(mWaitingTasksMutex);
 348
 349       auto mapIter = mCacheImpl->mWaitingTasksCache.find(task.Get());
 350       if(mapIter != mCacheImpl->mWaitingTasksCache.end())
 351       {
 352         for(auto& iterator : mapIter->second)
 353         {
 354           DALI_ASSERT_DEBUG((*iterator) == task);
 355           if((*iterator)->GetPriorityType() == AsyncTask::PriorityType::HIGH)
 356           {
 357             // Decrease the number of waiting tasks for high priority.
 358             --mWaitingHighProirityTaskCounts;
 359           }
 360           mWaitingTasks.erase(iterator);
 361         }
 362         CacheImpl::EraseAllTaskCache(mCacheImpl->mWaitingTasksCache, task);
 363       }
 364
 365       if(!mWaitingTasks.empty())
 366       {
 367         needCheckUnregisterProcessor = false;
 368       }
 369     }
 370
 371     {
 372       // Lock while remove task from the queue
 373       Mutex::ScopedLock lock(mRunningTasksMutex);
 374
 375       auto mapIter = mCacheImpl->mRunningTasksCache.find(task.Get());
 376       if(mapIter != mCacheImpl->mRunningTasksCache.end())
 377       {
 378         for(auto& iterator : mapIter->second)
 379         {
 380           DALI_ASSERT_DEBUG((*iterator).first == task);
 381           // We cannot erase container. Just mark as canceled.
 382           // Note : mAvaliableLowPriorityTaskCounts will be increased after process finished.
 383           (*iterator).second = RunningTaskState::CANCELED;
 384         }
 385       }
 386
 387       if(!mRunningTasks.empty())
 388       {
 389         needCheckUnregisterProcessor = false;
 390       }
 391     }
 392
 393     {
 394       // Lock while remove task from the queue
 395       Mutex::ScopedLock lock(mCompletedTasksMutex);
 396
 397       auto mapIter = mCacheImpl->mCompletedTasksCache.find(task.Get());
 398       if(mapIter != mCacheImpl->mCompletedTasksCache.end())
 399       {
 400         for(auto& iterator : mapIter->second)
 401         {
 402           DALI_ASSERT_DEBUG((*iterator) == task);
 403           mCompletedTasks.erase(iterator);
 404         }
 405         CacheImpl::EraseAllTaskCache(mCacheImpl->mCompletedTasksCache, task);
 406       }
 407
 408       if(!mCompletedTasks.empty())
 409       {
 410         needCheckUnregisterProcessor = false;
 411       }
 412     }
 413
 414     // UnregisterProcessor required to lock mutex. Call this API only if required.
 415     if(needCheckUnregisterProcessor)
 416     {
 417       UnregisterProcessor();
 418     }
 419   }
 420 }
 421
 422 AsyncTaskPtr AsyncTaskManager::PopNextCompletedTask()
 423 {
 424   // Lock while popping task out from the queue
 425   Mutex::ScopedLock lock(mCompletedTasksMutex);
 426
 427   if(mCompletedTasks.empty())
 428   {
 429     return AsyncTaskPtr();
 430   }
 431
 432   DALI_LOG_INFO(gAsyncTasksManagerLogFilter, Debug::Verbose, "PopNextCompletedTask, completed task count : [%zu]\n", mCompletedTasks.size());
 433
 434   auto         next     = mCompletedTasks.begin();
 435   AsyncTaskPtr nextTask = *next;
 436   CacheImpl::EraseTaskCache(mCacheImpl->mCompletedTasksCache, nextTask, next);
 437   mCompletedTasks.erase(next);
 438
 439   DALI_LOG_INFO(gAsyncTasksManagerLogFilter, Debug::General, "Pickup completed [%p]\n", nextTask.Get());
 440
 441   return nextTask;
 442 }
 443
 444 void AsyncTaskManager::UnregisterProcessor()
 445 {
 446   if(mProcessorRegistered && Dali::Adaptor::IsAvailable())
 447   {
 448     DALI_LOG_INFO(gAsyncTasksManagerLogFilter, Debug::Verbose, "UnregisterProcessor begin\n");
 449     // Keep processor at least 1 task exist.
 450     // Please be careful the order of mutex, to avoid dead lock.
 451     // TODO : Should we lock all mutex rightnow?
 452     Mutex::ScopedLock lockWait(mWaitingTasksMutex);
 453     if(mWaitingTasks.empty())
 454     {
 455       Mutex::ScopedLock lockRunning(mRunningTasksMutex); // We can lock this mutex under mWaitingTasksMutex.
 456       if(mRunningTasks.empty())
 457       {
 458         Mutex::ScopedLock lockComplete(mCompletedTasksMutex); // We can lock this mutex under mWaitingTasksMutex and mRunningTasksMutex.
 459         if(mCompletedTasks.empty())
 460         {
 461           mProcessorRegistered = false;
 462           Dali::Adaptor::Get().UnregisterProcessor(*this);
 463         }
 464       }
 465     }
 466     DALI_LOG_INFO(gAsyncTasksManagerLogFilter, Debug::Verbose, "UnregisterProcessor end (registed? %d)\n", mProcessorRegistered);
 467   }
 468 }
 469
 470 void AsyncTaskManager::TasksCompleted()
 471 {
 472   DALI_LOG_INFO(gAsyncTasksManagerLogFilter, Debug::Verbose, "TasksCompleted begin\n");
 473   while(AsyncTaskPtr task = PopNextCompletedTask())
 474   {
 475     DALI_LOG_INFO(gAsyncTasksManagerLogFilter, Debug::Verbose, "Execute callback [%p]\n", task.Get());
 476     CallbackBase::Execute(*(task->GetCompletedCallback()), task);
 477   }
 478
 479   UnregisterProcessor();
 480   DALI_LOG_INFO(gAsyncTasksManagerLogFilter, Debug::Verbose, "TasksCompleted end\n");
 481 }
 482
 483 void AsyncTaskManager::Process(bool postProcessor)
 484 {
 485   TasksCompleted();
 486 }
 487
 488 /// Worker thread called
 489 AsyncTaskPtr AsyncTaskManager::PopNextTaskToProcess()
 490 {
 491   // Lock while popping task out from the queue
 492   Mutex::ScopedLock lock(mWaitingTasksMutex);
 493
 494   DALI_LOG_INFO(gAsyncTasksManagerLogFilter, Debug::Verbose, "PopNextTaskToProcess, waiting task count : [%zu]\n", mWaitingTasks.size());
 495
 496   // pop out the next task from the queue
 497   AsyncTaskPtr nextTask = nullptr;
 498
 499   // Fast cut if all waiting tasks are LOW priority, and we cannot excute low task anymore.
 500   if(mWaitingHighProirityTaskCounts == 0u && !mWaitingTasks.empty())
 501   {
 502     // For thread safety
 503     Mutex::ScopedLock lock(mRunningTasksMutex); // We can lock this mutex under mWaitingTasksMutex.
 504
 505     if(mAvaliableLowPriorityTaskCounts == 0u)
 506     {
 507       // There are no avaliabe tasks to run now. Return nullptr.
 508       return nextTask;
 509     }
 510   }
 511
 512   for(auto iter = mWaitingTasks.begin(), endIter = mWaitingTasks.end(); iter != endIter; ++iter)
 513   {
 514     if((*iter)->IsReady())
 515     {
 516       const auto priorityType  = (*iter)->GetPriorityType();
 517       bool       taskAvaliable = priorityType == AsyncTask::PriorityType::HIGH; // Task always valid if it's priority is high
 518       if(!taskAvaliable)
 519       {
 520         // For thread safety
 521         Mutex::ScopedLock lock(mRunningTasksMutex); // We can lock this mutex under mWaitingTasksMutex.
 522
 523         taskAvaliable = (mAvaliableLowPriorityTaskCounts > 0u); // priority is low, but we can use it.
 524       }
 525
 526       if(taskAvaliable)
 527       {
 528         nextTask = *iter;
 529
 530         // Add Running queue
 531         {
 532           // Lock while popping task out from the queue
 533           Mutex::ScopedLock lock(mRunningTasksMutex); // We can lock this mutex under mWaitingTasksMutex.
 534
 535           DALI_LOG_INFO(gAsyncTasksManagerLogFilter, Debug::Verbose, "Waiting -> Running [%p]\n", nextTask.Get());
 536
 537           auto runningIter = mRunningTasks.insert(mRunningTasks.end(), std::make_pair(nextTask, RunningTaskState::RUNNING));
 538           CacheImpl::InsertTaskCache(mCacheImpl->mRunningTasksCache, nextTask, runningIter);
 539
 540           // Decrease avaliable task counts if it is low priority
 541           if(priorityType == AsyncTask::PriorityType::LOW)
 542           {
 543             // We are under running task mutex. We can decrease it.
 544             --mAvaliableLowPriorityTaskCounts;
 545           }
 546         }
 547
 548         if(priorityType == AsyncTask::PriorityType::HIGH)
 549         {
 550           // Decrease the number of waiting tasks for high priority.
 551           --mWaitingHighProirityTaskCounts;
 552         }
 553
 554         CacheImpl::EraseTaskCache(mCacheImpl->mWaitingTasksCache, nextTask, iter);
 555         mWaitingTasks.erase(iter);
 556         break;
 557       }
 558     }
 559   }
 560
 561   DALI_LOG_INFO(gAsyncTasksManagerLogFilter, Debug::General, "Pickup process [%p]\n", nextTask.Get());
 562
 563   return nextTask;
 564 }
 565
 566 /// Worker thread called
 567 void AsyncTaskManager::CompleteTask(AsyncTaskPtr task)
 568 {
 569   bool notify = false;
 570
 571   // Lock while adding task to the queue
 572   if(task)
 573   {
 574     Mutex::ScopedLock lock(mRunningTasksMutex);
 575
 576     auto mapIter = mCacheImpl->mRunningTasksCache.find(task.Get());
 577     if(mapIter != mCacheImpl->mRunningTasksCache.end())
 578     {
 579       const auto cacheIter = mapIter->second.begin();
 580       DALI_ASSERT_ALWAYS(cacheIter != mapIter->second.end());
 581
 582       const auto iter = *cacheIter;
 583       DALI_ASSERT_DEBUG(iter->first == task);
 584       if(iter->second == RunningTaskState::RUNNING)
 585       {
 586         // This task is valid.
 587         notify = true;
 588       }
 589
 590       const auto priorityType = iter->first->GetPriorityType();
 591       // Increase avaliable task counts if it is low priority
 592       if(priorityType == AsyncTask::PriorityType::LOW)
 593       {
 594         // We are under running task mutex. We can increase it.
 595         ++mAvaliableLowPriorityTaskCounts;
 596       }
 597       CacheImpl::EraseTaskCache(mCacheImpl->mRunningTasksCache, task, iter);
 598       mRunningTasks.erase(iter);
 599     }
 600
 601     DALI_LOG_INFO(gAsyncTasksManagerLogFilter, Debug::Verbose, "CompleteTask [%p] (is notify? : %d)\n", task.Get(), notify);
 602
 603     // We should move the task to compeleted task under mRunningTaskMutex.
 604     if(notify && task->GetCallbackInvocationThread() == AsyncTask::ThreadType::MAIN_THREAD)
 605     {
 606       Mutex::ScopedLock lock(mCompletedTasksMutex); // We can lock this mutex under mRunningTasksMutex.
 607
 608       DALI_LOG_INFO(gAsyncTasksManagerLogFilter, Debug::Verbose, "Running -> Completed [%p]\n", task.Get());
 609
 610       auto completedIter = mCompletedTasks.insert(mCompletedTasks.end(), task);
 611       CacheImpl::InsertTaskCache(mCacheImpl->mCompletedTasksCache, task, completedIter);
 612     }
 613   }
 614
 615   // We should execute this tasks complete callback out of mutex
 616   if(notify)
 617   {
 618     if(task->GetCallbackInvocationThread() == AsyncTask::ThreadType::MAIN_THREAD)
 619     {
 620       // wake up the main thread
 621       DALI_LOG_INFO(gAsyncTasksManagerLogFilter, Debug::Verbose, "Trigger main thread\n");
 622       mTrigger->Trigger();
 623     }
 624     else // task->GetCallbackInvocationThread() == AsyncTask::ThreadType::WORKER_THREAD
 625     {
 626       DALI_LOG_INFO(gAsyncTasksManagerLogFilter, Debug::Verbose, "Execute callback on worker thread [%p]\n", task.Get());
 627       CallbackBase::Execute(*(task->GetCompletedCallback()), task);
 628     }
 629   }
 630 }
 631
 632 // AsyncTaskManager::TaskHelper
 633
 634 AsyncTaskManager::TaskHelper::TaskHelper(AsyncTaskManager& asyncTaskManager)
 635 : TaskHelper(std::unique_ptr<AsyncTaskThread>(new AsyncTaskThread(asyncTaskManager)), asyncTaskManager)
 636 {
 637 }
 638
 639 AsyncTaskManager::TaskHelper::TaskHelper(TaskHelper&& rhs)
 640 : TaskHelper(std::move(rhs.mProcessor), rhs.mAsyncTaskManager)
 641 {
 642 }
 643
 644 AsyncTaskManager::TaskHelper::TaskHelper(std::unique_ptr<AsyncTaskThread> processor, AsyncTaskManager& asyncTaskManager)
 645 : mProcessor(std::move(processor)),
 646   mAsyncTaskManager(asyncTaskManager)
 647 {
 648 }
 649
 650 bool AsyncTaskManager::TaskHelper::Request()
 651 {
 652   return mProcessor->Request();
 653 }
 654 } // namespace Adaptor
 655
 656 } // namespace Internal
 657
 658 } // namespace Dali