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#ifndef vtknvindex_performance_values_h
#define vtknvindex_performance_values_h

#include <fstream>
#include <nv/index/iindex.h>
#include <string>

class vtknvindex_application;

// The class vtknvindex_performance_values represents a helper class to collect
// performance values of NVIDIA IndeX renderings and output them to a text file
// along with system/hardware information for offline analysis.

class vtknvindex_performance_values
{
public:
  vtknvindex_performance_values();
  ~vtknvindex_performance_values();

  // Print performance values to a file.
  void print_perf_values(
    vtknvindex_application& application, mi::base::Handle<nv::index::IFrame_results> frame_results);

private:
  vtknvindex_performance_values(const vtknvindex_performance_values&) = delete;
  void operator=(const vtknvindex_performance_values&) = delete;

  // Represent some memory block as string including units.
  std::string to_string(mi::Uint64 memory) const;

  bool m_print_header;
  std::string m_performance_log_file;
};

#endif
