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#include "RecastTimer.h"
#if defined(WIN32)
// Win32
#include <windows.h>
rcTimeVal rcGetPerformanceTimer()
{
__int64 count;
QueryPerformanceCounter((LARGE_INTEGER*)&count);
return count;
}
int rcGetDeltaTimeUsec(rcTimeVal start, rcTimeVal end)
{
static __int64 freq = 0;
if (freq == 0)
QueryPerformanceFrequency((LARGE_INTEGER*)&freq);
__int64 elapsed = end - start;
return (int)(elapsed*1000000 / freq);
}
#elif defined(__MACH__)
// OSX
#include <mach/mach_time.h>
rcTimeVal rcGetPerformanceTimer()
{
return mach_absolute_time();
}
int rcGetDeltaTimeUsec(rcTimeVal start, rcTimeVal end)
{
static mach_timebase_info_data_t timebaseInfo;
if (timebaseInfo.denom == 0)
mach_timebase_info(&timebaseInfo);
uint64_t elapsed = end - start;
uint64_t nanosec = elapsed * timebaseInfo.numer / timebaseInfo.denom;
return (int)(nanosec / 1000);
}
#else
// TODO: Linux, etc
rcTimeVal rcGetPerformanceTimer()
{
return 0;
}
int rcGetDeltaTimeUsec(rcTimeVal start, rcTimeVal end)
{
return 0;
}
#endif
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