An object of this type is returned by the raytracer after rendering. It contains all the statistics your curiosity might push you to look for.
The usefull methods are :
const char* printYourself(); // returns a printable string reporting all the statistics
int getNbShadowTests() { return nbShadowTests; }
int getNbIntersectionTests() { return nbIntersectionTests; }
int getNbReflectedRays() { return nbReflectedRays; }
int getNbRefractedRays() { return nbRefractedRays; }
int getNbPrimaryRays() { return nbPrimaryRays; }
int getTotalTime() { return totalTime; }
int getCpuTime() { return cpuTime; }