Timer oder Zeitmessung?

Code:
    class timer 
    { 
        public: 
            // Konstruktoren 
            timer (); 

            // Methoden 
            void start (); 
            long double stop (); 
            
            inline long double getlast () const; 

        private: 
            // Konstruktoren 
            timer (const timer&); 

            // Operatoren 
            timer& operator = (const timer&); 

            // Variablen 
            LARGE_INTEGER m_Timer; 
            long double m_Measurement; 

    }; 


    timer::timer () 
        : 
    m_Measurement(0) 
    { 
        m_Timer.QuadPart = 0; 
    } 

    void timer::start () 
    { 
        if(!QueryPerformanceCounter(&m_Timer)) 
            throw; 
    } 

    long double timer::stop () 
    { 
        LARGE_INTEGER EndTime; 
        if(!QueryPerformanceCounter(&EndTime)) 
            throw; 

        EndTime.QuadPart -= m_Timer.QuadPart; 

        LARGE_INTEGER Frequency; 
        QueryPerformanceFrequency(&Frequency); 

        m_Measurement = EndTime.QuadPart / static_cast<long double>(Frequency.QuadPart); 

        return(m_Measurement); 
    } 

    long double timer::getlast () const 
    { 
        return(m_Measurement); 
    }
aus dem Cplusplus-Forum (http://www.c-plusplus.de/forum/index.php).

Blackbird