Timer.cpp

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#include "Timer.h"
 
namespace dyno
{
    CTimer::CTimer()
    {
#if (defined _WIN32)
        QueryPerformanceFrequency(&timer_frequency_);
#endif
        start();
    }
 
    CTimer::~CTimer()
    {
    }
 
    void CTimer::start()
    {
#if (defined __unix__) || (defined __APPLE__)
        timeval tv;
        gettimeofday(&tv, 0);
        start_sec_ = tv.tv_sec;
        start_micro_sec_ = tv.tv_usec;
#elif (defined _WIN32)
        QueryPerformanceCounter(&start_count_);
#endif
    }
 
    void CTimer::stop()
    {
#if (defined __unix__) || (defined __APPLE__)
        timeval tv;
        gettimeofday(&tv, 0);
        stop_sec_ = tv.tv_sec;
        stop_micro_sec_ = tv.tv_usec;
#elif (defined _WIN32)
        QueryPerformanceCounter(&stop_count_);
#endif
    }
 
    double CTimer::getElapsedTime()
    {
#if (defined __unix__) || (defined __APPLE__)
        double elapsed_time = 1.0 * (stop_sec_ - start_sec_) + 1.0e-6 * (stop_micro_sec_ - start_micro_sec_);
        return elapsed_time;
#elif (defined _WIN32)
        double elapsed_time = static_cast<double>(stop_count_.QuadPart - start_count_.QuadPart) / static_cast<double>(timer_frequency_.QuadPart);
        return 1000.0 * elapsed_time;
#endif
    }
 
    void CTimer::outputString(char* str)
    {
        std::cout << str << ": " << getElapsedTime() << "ms" << std::endl;
    }
 
#ifdef CUDA_BACKEND
    GTimer::GTimer()
    {
        milliseconds = 0.0f;
        cudaEventCreate(&m_start);
        cudaEventCreate(&m_stop);
    }
 
    GTimer::~GTimer()
    {
    }
 
    void GTimer::start()
    {
        cudaEventRecord(m_start, 0);
    }
 
    void GTimer::stop()
    {
        cudaEventRecord(m_stop, 0);
        cudaEventSynchronize(m_stop);
        cudaEventElapsedTime(&milliseconds, m_start, m_stop);
    }
 
    float GTimer::getElapsedTime()
    {
        return milliseconds;
    }
 
    void GTimer::outputString(const char* str)
    {
        std::cout << str << ": " << getElapsedTime() << "ms" << std::endl;
    }
#endif
} // end of namespace dyno