#ifdef DEBUG_MEMUSAGE
std::cerr << "max heap usage before Doc: " << HeapProfiler::GetMaxHeapConsumption()/(1024*1024) << " Mbytes" << std::endl;
HeapProfiler::ResetMaxHeapConsumption();
#ifdef DEBUG_MEMUSAGE
std::cerr << "max heap usage before Doc: " << HeapProfiler::GetMaxHeapConsumption()/(1024*1024) << " Mbytes" << std::endl;
HeapProfiler::ResetMaxHeapConsumption();