Method RequestInformation

IO/Parallel/vtkPOpenFOAMReader.cxx:411–722

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

//------------------------------------------------------------------------------
int vtkPOpenFOAMReader::RequestInformation(
  vtkInformation* request, vtkInformationVector** inputVector, vtkInformationVector* outputVector)
{
#if VTK_OPENFOAM_TIME_PROFILING
  this->InitializeRequestInformation();
#endif
  const bool isRootProc = (this->ProcessId == 0);
  const bool isParallel = (this->NumProcesses > 1);
  int returnCode = 1;

  // Set handle piece request for all cases. Even if the reconstructed case is not actually
  // distributed, we need all processes to go through RequestData every time in order to go through
  // "Gather" functions.
  outputVector->GetInformationObject(0)->Set(CAN_HANDLE_PIECE_REQUEST(), 1);

  if (this->CaseType == RECONSTRUCTED_CASE)
  {
#if VTK_OPENFOAM_TIME_PROFILING
    auto start = std::chrono::high_resolution_clock::now();
#endif
    if (isRootProc)
    {
      returnCode = this->Superclass::RequestInformation(request, inputVector, outputVector);
    }

    if (isParallel)
    {
      this->Controller->Broadcast(&returnCode, 1, 0);

      if (returnCode == 0)
      {
        // Error encountered in process 0 - abort all processes
        vtkErrorMacro(<< "The master process returned an error.");
        return 0;
      }

      vtkDoubleArray* timeValues = nullptr;
      if (isRootProc)
      {
        timeValues = this->Superclass::GetTimeValues();
      }
      else
      {
        timeValues = vtkDoubleArray::New();
      }
      this->Controller->Broadcast(timeValues, 0);
      if (!isRootProc)
      {
        this->Superclass::SetTimeInformation(outputVector, timeValues);
        this->Superclass::Refresh = false;
        timeValues->Delete();
      }
    }

    this->GatherMetaData();
#if VTK_OPENFOAM_TIME_PROFILING
    auto end = std::chrono::high_resolution_clock::now();
    std::cout << "vtkPOpenFOAMReader::RequestInformation: Elapsed time: "