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48 lines
1.1 KiB
C++
48 lines
1.1 KiB
C++
#include "TimeHelpers.h"
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#include <windows.h>
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namespace UnitTest {
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Timer::Timer()
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: m_threadHandle(::GetCurrentThread())
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, m_startTime(0)
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{
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#if defined(_MSC_VER) && (_MSC_VER == 1200) // VC6 doesn't have DWORD_PTR?
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typedef unsigned long DWORD_PTR;
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#endif
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DWORD_PTR systemMask;
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::GetProcessAffinityMask(GetCurrentProcess(), &m_processAffinityMask, &systemMask);
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::SetThreadAffinityMask(m_threadHandle, 1);
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::QueryPerformanceFrequency(reinterpret_cast< LARGE_INTEGER* >(&m_frequency));
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::SetThreadAffinityMask(m_threadHandle, m_processAffinityMask);
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}
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void Timer::Start()
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{
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m_startTime = GetTime();
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}
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double Timer::GetTimeInMs() const
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{
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__int64 const elapsedTime = GetTime() - m_startTime;
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double const seconds = double(elapsedTime) / double(m_frequency);
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return seconds * 1000.0;
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}
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__int64 Timer::GetTime() const
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{
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LARGE_INTEGER curTime;
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::SetThreadAffinityMask(m_threadHandle, 1);
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::QueryPerformanceCounter(&curTime);
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::SetThreadAffinityMask(m_threadHandle, m_processAffinityMask);
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return curTime.QuadPart;
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}
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void TimeHelpers::SleepMs(int const ms)
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{
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::Sleep(ms);
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}
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}
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