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The windows timer used does not have enough resolution - replacing with another high-res API.

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Closes #12.
This commit is contained in:
manuelk 2012-06-15 11:41:16 -07:00
parent 7a6fd95f6b
commit 468b00c5b9
1 changed files with 13 additions and 13 deletions
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26
examples/common/stopwatch.h
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@ -93,31 +93,29 @@ public:
return _totalElapsed;
}
#else
Stopwatch() {
QueryPerformanceFrequency(&_frequency);
}
void Start()
{
__int64 CreationTime, ExitTime, KernelTime, UserTime;
GetProcessTimes(GetCurrentProcess(), (FILETIME*) &CreationTime, (FILETIME*) &ExitTime,
(FILETIME*) &KernelTime, (FILETIME*) &UserTime);
GetSystemTimeAsFileTime((FILETIME*) &_elapsed);
QueryPerformanceCounter(&_time);
}
void Stop()
{
__int64 CreationTime, ExitTime, KernelTime, UserTime, CurrentTime;
GetProcessTimes(GetCurrentProcess(), (FILETIME*) &CreationTime, (FILETIME*) &ExitTime,
(FILETIME*) &KernelTime, (FILETIME*) &UserTime);
GetSystemTimeAsFileTime((FILETIME*) &CurrentTime);
_elapsed = CurrentTime - _elapsed;
_totalElapsed += _elapsed;
LARGE_INTEGER currentTime;
QueryPerformanceCounter(&currentTime);
_elapsed = currentTime.QuadPart - _time.QuadPart;
_totalElapsed+=_elapsed;
}
double GetElapsed() const {
return _elapsed / (1000 * 1000 * 10);
return (double) _elapsed / _frequency.QuadPart;
}
double GetTotalElapsed() const {
return _totalElapsed / (1000 * 1000 * 10);
return (double) _totalElapsed / _frequency.QuadPart;
}
#endif
@ -127,6 +125,8 @@ private:
double _elapsed;
double _totalElapsed;
#else
LARGE_INTEGER _time,
LARGE_INTEGER _frequency;
__int64 _elapsed;
__int64 _totalElapsed;
#endif