60 lines
1.1 KiB
C++
60 lines
1.1 KiB
C++
#include "stdafx.h"
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#include "HighResTimeStamp.h"
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#ifdef _WIN32
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#include <Windows.h>
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#else
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#include <math.h>
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#endif
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#ifdef _WIN32
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bool HighResTimeStamp::m_GotFreq = false;
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uint64_t HighResTimeStamp::m_Freq = { 0 };
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#endif
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HighResTimeStamp::HighResTimeStamp()
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{
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#ifndef _WIN32
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m_time = 0;
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#else
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if (!m_GotFreq)
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{
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LARGE_INTEGER value;
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QueryPerformanceFrequency(&value);
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m_Freq = value.QuadPart;
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}
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m_time = 0;
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#endif
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}
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HighResTimeStamp & HighResTimeStamp::SetToNow(void)
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{
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#ifndef _WIN32
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struct timespec now;
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memset(&now, 0, sizeof(now));
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clock_gettime(CLOCK_MONOTONIC, &now);
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m_time = ((uint64_t)now.tv_sec * (uint64_t)1000000l) + (now.tv_nsec / 1000);
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#else
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LARGE_INTEGER value;
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QueryPerformanceCounter(&value);
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m_time = value.QuadPart;
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#endif
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return *this;
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}
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uint64_t HighResTimeStamp::GetMicroSeconds(void)
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{
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#ifndef _WIN32
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return m_time;
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#else
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return (m_time * 1000000) / m_Freq;
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#endif
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}
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void HighResTimeStamp::SetMicroSeconds(uint64_t MicroSeconds)
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{
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#ifndef _WIN32
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m_time = MicroSeconds;
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#else
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m_time = (MicroSeconds * m_Freq) / 1000000;
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#endif
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} |