学步园

LARGE_INTEGER start_PerformanceCount;</p> <p>QueryPerformanceCounter(&start_PerformanceCount); //起始计数器</p> <p>//运行测试的代码<br /> Sleep(1);</p> <p>LARGE_INTEGER end_PerformanceCount;<br /> QueryPerformanceCounter(&end_PerformanceCount); //结束计数器</p> <p>LARGE_INTEGER Frequency;<br /> QueryPerformanceFrequency(&Frequency); //计数器频率</p> <p>LARGE_INTEGER run_count;<br /> run_count.QuadPart = end_PerformanceCount.QuadPart - start_PerformanceCount.QuadPart;//运行时间计数器</p> <p>double run_time = (double)run_count.QuadPart / (double)Frequency.QuadPart; //运行时间<br />