Method GatherVVoidArray

Parallel/Core/vtkCommunicator.cxx:1232–1261

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//------------------------------------------------------------------------------
int vtkCommunicator::GatherVVoidArray(const void* sendBuffer, void* recvBuffer,
  vtkIdType sendLength, vtkIdType* recvLengths, vtkIdType* offsets, int type, int destProcessId)
{
  if (this->LocalProcessId == destProcessId)
  {
    int result = 1;
    char* dest = reinterpret_cast<char*>(recvBuffer);
    int typeSize = 1;
    switch (type)
    {
      vtkTemplateMacro(typeSize = sizeof(VTK_TT));
    }
    // Copy local data first in case buffers are the same.
    memmove(dest + offsets[this->LocalProcessId] * typeSize, sendBuffer, sendLength * typeSize);
    // Receive everything else.
    for (int i = 0; i < this->NumberOfProcesses; i++)
    {
      if (this->LocalProcessId != i)
      {
        result &= this->ReceiveVoidArray(
          dest + offsets[i] * typeSize, recvLengths[i], type, i, GATHERV_TAG);
      }
    }
    return result;
  }
  else
  {
    return this->SendVoidArray(sendBuffer, sendLength, type, destProcessId, GATHERV_TAG);
  }
}

//------------------------------------------------------------------------------
int vtkCommunicator::GatherV(vtkDataArray* sendBuffer, vtkDataArray* recvBuffer, int destProcessId)