ssTimer.h

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#ifndef SS_TIMER
#define SS_TIMER

#ifdef WIN32
#include <Windows.h>
#else
#include <sys/time.h>
#endif

#include "ssdllexport.h"

class SIGSIMRT_API ssTimer 
{
public:

    ssTimer()
    {

#ifdef WIN32
        LARGE_INTEGER frequency;
        QueryPerformanceFrequency( &frequency );
        m_ticksPerSecond = frequency.QuadPart;
#else
#endif
        // Prepare the timer to start counting seconds
        reset();

    }


    void reset()
    {
#ifdef WIN32
        LARGE_INTEGER currentTime;
        QueryPerformanceCounter( &currentTime );
        m_startTime = currentTime.QuadPart;
#else
        struct timezone tz;
        gettimeofday( &m_startTime, &tz);
#endif
    }


    double getTime()
    {
        double rtn = 0.0;

#ifdef WIN32
        LARGE_INTEGER currentTime;
        QueryPerformanceCounter( &currentTime );

        rtn =  double( currentTime.QuadPart - m_startTime ) / 
               double( m_ticksPerSecond );
#else
        struct timeval currentTime;
        struct timezone tz;
        gettimeofday( &currentTime, &tz );

        double seconds = currentTime.tv_sec - m_startTime.tv_sec;
        double useconds = currentTime.tv_usec - m_startTime.tv_usec;

        rtn = seconds + ( useconds / 1000000.0 );
#endif

        return rtn;
    }

private:

#ifdef WIN32
    LONGLONG m_ticksPerSecond;
    LONGLONG m_startTime;
#else
    struct timeval  m_startTime;
#endif

};

#endif // ifdef SS_TIMER