C++ (Cpp) DoSomeInternal Examples

Example #1

File: ODTask.cpp Project: ruthmagnus/audacity

///Do a modular part of the task.  For example, if the task is to load the entire file, load one BlockFile.
///Relies on DoSomeInternal(), which is the subclasses must implement.
///@param amountWork the percent amount of the total job to do.  1.0 represents the entire job.  the default of 0.0
/// will do the smallest unit of work possible
void ODTask::DoSome(float amountWork)
{
   mBlockUntilTerminateMutex.Lock();

   printf("%s %i subtask starting on new thread with priority\n", GetTaskName(),GetTaskNumber());

   mDoingTask=mTaskStarted=true;
   
   float workUntil = amountWork+PercentComplete();
   
   if(workUntil<PercentComplete())
      workUntil = PercentComplete();
   
   //check periodically to see if we should exit.
   mTerminateMutex.Lock();
   if(mTerminate)
   {
      mBlockUntilTerminateMutex.Unlock();
      mTerminateMutex.Unlock();
      return;
   }  
   mTerminateMutex.Unlock();

   Update();   
   
   //Do Some of the task.
   
   mTerminateMutex.Lock();
   while(PercentComplete() < workUntil && PercentComplete() < 1.0 && !mTerminate)
   {
      wxThread::This()->Yield();
      //release within the loop so we can cut the number of iterations short
      mTerminateMutex.Unlock();
      //TODO: check to see if ondemand has been called
      if(false)
         ODUpdate();
      DoSomeInternal();
      
      //But add the mutex lock back before we check the value again.
      mTerminateMutex.Lock();
   }
   mTerminateMutex.Unlock();
   mDoingTask=false;
   
   mTerminateMutex.Lock();
   //if it is not done, put it back onto the ODManager queue.
   if(!IsComplete() && !mTerminate)
   {
      ODManager::Instance()->AddTask(this);
      printf("%s %i is %f done\n", GetTaskName(),GetTaskNumber(),PercentComplete());
   }
   else
   {
      printf("%s %i complete\n", GetTaskName(),GetTaskNumber());
   }
   mTerminateMutex.Unlock();
   mBlockUntilTerminateMutex.Unlock();
   
}

Example #2

File: ODTask.cpp Project: QuincyPYoung/audacity

///Do a modular part of the task.  For example, if the task is to load the entire file, load one BlockFile.
///Relies on DoSomeInternal(), which is the subclasses must implement.
///@param amountWork the percent amount of the total job to do.  1.0 represents the entire job.  the default of 0.0
/// will do the smallest unit of work possible
void ODTask::DoSome(float amountWork)
{
   SetIsRunning(true);
   mBlockUntilTerminateMutex.Lock();

//   printf("%s %i subtask starting on new thread with priority\n", GetTaskName(),GetTaskNumber());

   mDoingTask=mTaskStarted=true;

   float workUntil = amountWork+PercentComplete();



   //check periodically to see if we should exit.
   mTerminateMutex.Lock();
   if(mTerminate)
   {
      mTerminateMutex.Unlock();
      SetIsRunning(false);
      mBlockUntilTerminateMutex.Unlock();
      return;
   }
   mTerminateMutex.Unlock();

   Update();


   if(UsesCustomWorkUntilPercentage())
      workUntil = ComputeNextWorkUntilPercentageComplete();

   if(workUntil<PercentComplete())
      workUntil = PercentComplete();

   //Do Some of the task.

   mTerminateMutex.Lock();
   while(PercentComplete() < workUntil && PercentComplete() < 1.0 && !mTerminate)
   {
      wxThread::This()->Yield();
      //release within the loop so we can cut the number of iterations short

      DoSomeInternal(); //keep the terminate mutex on so we don't remo
      mTerminateMutex.Unlock();
      //check to see if ondemand has been called
      if(GetNeedsODUpdate() && PercentComplete() < 1.0)
         ODUpdate();


      //But add the mutex lock back before we check the value again.
      mTerminateMutex.Lock();
   }
   mTerminateMutex.Unlock();
   mDoingTask=false;

   mTerminateMutex.Lock();
   //if it is not done, put it back onto the ODManager queue.
   if(PercentComplete() < 1.0&& !mTerminate)
   {
      ODManager::Instance()->AddTask(this);

      //we did a bit of progress - we should allow a resave.
      AudacityProject::AllProjectsDeleteLock();
      for(unsigned i=0; i<gAudacityProjects.GetCount(); i++)
      {
         if(IsTaskAssociatedWithProject(gAudacityProjects[i]))
         {
            //mark the changes so that the project can be resaved.
            gAudacityProjects[i]->GetUndoManager()->SetODChangesFlag();
            break;
         }
      }
      AudacityProject::AllProjectsDeleteUnlock();


//      printf("%s %i is %f done\n", GetTaskName(),GetTaskNumber(),PercentComplete());
   }
   else
   {
      //for profiling, uncomment and look in audacity.app/exe's folder for AudacityProfile.txt
      //static int tempLog =0;
      //if(++tempLog % 5==0)
         //END_TASK_PROFILING("On Demand Drag and Drop 5 80 mb files into audacity, 5 wavs per task");
      //END_TASK_PROFILING("On Demand open an 80 mb wav stereo file");

      wxCommandEvent event( EVT_ODTASK_COMPLETE );
      AudacityProject::AllProjectsDeleteLock();

      for(unsigned i=0; i<gAudacityProjects.GetCount(); i++)
      {
         if(IsTaskAssociatedWithProject(gAudacityProjects[i]))
         {
            //this assumes tasks are only associated with one project.
            gAudacityProjects[i]->GetEventHandler()->AddPendingEvent(event);
            //mark the changes so that the project can be resaved.
            gAudacityProjects[i]->GetUndoManager()->SetODChangesFlag();
            break;
         }
      }
      AudacityProject::AllProjectsDeleteUnlock();

//      printf("%s %i complete\n", GetTaskName(),GetTaskNumber());
   }
   mTerminateMutex.Unlock();
   SetIsRunning(false);
   mBlockUntilTerminateMutex.Unlock();
}