Method RequestUpdateExtent

IO/IOSS/vtkIOSSWriter.cxx:267–293

----------------------------------------------------------------------------

//----------------------------------------------------------------------------
int vtkIOSSWriter::RequestUpdateExtent(vtkInformation* vtkNotUsed(request),
  vtkInformationVector** inputVector, vtkInformationVector* vtkNotUsed(outputVector))
{
  auto* info = inputVector[0]->GetInformationObject(0);
  if (auto* controller = this->GetController())
  {
    const int rank = controller->GetLocalProcessId();
    const int numRanks = controller->GetNumberOfProcesses();

    info->Set(vtkStreamingDemandDrivenPipeline::UPDATE_PIECE_NUMBER(), rank);
    info->Set(vtkStreamingDemandDrivenPipeline::UPDATE_NUMBER_OF_PIECES(), numRanks);
  }

  auto& internals = (*this->Internals);
  if (internals.CurrentTimeStepIndex >= 0 &&
    internals.CurrentTimeStepIndex < static_cast<int>(internals.TimeSteps.size()))
  {
    info->Set(vtkStreamingDemandDrivenPipeline::UPDATE_TIME_STEP(),
      internals.TimeSteps[internals.CurrentTimeStepIndex]);
  }
  else
  {
    info->Remove(vtkStreamingDemandDrivenPipeline::UPDATE_TIME_STEP());
  }

  return 1;
}

//----------------------------------------------------------------------------
int vtkIOSSWriter::RequestData(vtkInformation* request,