QueryPerformanceFrequency/QueryPerformanceCounter 获取代码精确运行时间
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2024-01-23 17:08:16
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QueryPerformanceFrequency(&nFreq);
QueryPerformanceCounter(&nBeginTime);
Sleep(1000);
QueryPerformanceCounter(&nEndTime);
time = (double)(nEndTime.QuadPart - nBeginTime.QuadPart) / (double)nFreq.QuadPart;
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