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#ifndef CRYPTOPP_HRTIMER_H
#define CRYPTOPP_HRTIMER_H
#include "config.h"
NAMESPACE_BEGIN(CryptoPP)
#ifdef HIGHRES_TIMER_AVAILABLE
//! high resolution timer
class Timer
{
public:
enum Unit {SECONDS, MILLISECONDS, MICROSECONDS};
Timer(Unit unit, bool stuckAtZero = false) : m_timerUnit(unit), m_stuckAtZero(stuckAtZero), m_started(false) {}
static word64 GetCurrentTimerValue(); // GetCurrentTime is a macro in MSVC 6.0
static unsigned long ConvertTo(word64 t, Unit unit);
// this is not the resolution, just a conversion factor into milliseconds
static inline unsigned int TicksPerMillisecond()
{
#if defined(CRYPTOPP_WIN32_AVAILABLE)
return 10000;
#elif defined(CRYPTOPP_UNIX_AVAILABLE) || defined(macintosh)
return 1000;
#endif
}
void StartTimer();
unsigned long ElapsedTime();
private:
Unit m_timerUnit; // HPUX workaround: m_unit is a system macro on HPUX
bool m_stuckAtZero, m_started;
word64 m_start;
};
#endif
NAMESPACE_END
#endif
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