Method CreateSubController

Parallel/Core/vtkMultiProcessController.cxx:246–274

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//------------------------------------------------------------------------------
vtkMultiProcessController* vtkMultiProcessController::CreateSubController(vtkProcessGroup* group)
{
  if (group->GetCommunicator() != this->Communicator)
  {
    vtkErrorMacro(<< "Invalid group for creating a sub controller.");
    return nullptr;
  }

  if (group->FindProcessId(this->GetLocalProcessId()) < 0)
  {
    // The group does not contain this process.  Just return nullptr.
    return nullptr;
  }

  vtkSubCommunicator* subcomm = vtkSubCommunicator::New();
  subcomm->SetGroup(group);

  // We only need a basic implementation of vtkMultiProcessController for the
  // subgroup, so we just use vtkDummyController here.  It's a bit of a misnomer
  // and may lead to confusion, but I think it's better than creating yet
  // another class we have to maintain.
  vtkDummyController* subcontroller = vtkDummyController::New();
  subcontroller->SetCommunicator(subcomm);
  subcontroller->SetRMICommunicator(subcomm);

  subcomm->Delete();

  return subcontroller;
}

//------------------------------------------------------------------------------
vtkMultiProcessController* vtkMultiProcessController::PartitionController(