43 lines
835 B
C++
43 lines
835 B
C++
#include "RecastTimer.h"
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#ifdef WIN32
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#include <windows.h>
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rcTimeVal rcGetPerformanceTimer()
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{
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__int64 count;
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QueryPerformanceCounter((LARGE_INTEGER*)&count);
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return count;
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}
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int rcGetDeltaTimeUsec(rcTimeVal start, rcTimeVal end)
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{
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static __int64 freq = 0;
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if (freq == 0)
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QueryPerformanceFrequency((LARGE_INTEGER*)&freq);
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__int64 elapsed = end - start;
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return (int)(elapsed*1000000 / freq);
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}
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#else
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#include <mach/mach_time.h>
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rcTimeVal rcGetPerformanceTimer()
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{
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return mach_absolute_time();
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}
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int rcGetDeltaTimeUsec(rcTimeVal start, rcTimeVal end)
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{
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static mach_timebase_info_data_t timebaseInfo;
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if (timebaseInfo.denom == 0)
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mach_timebase_info(&timebaseInfo);
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uint64_t elapsed = end - start;
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uint64_t nanosec = elapsed * timebaseInfo.numer / timebaseInfo.denom;
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return (int)(nanosec / 1000);
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}
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#endif |