You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
63 lines
1.7 KiB
63 lines
1.7 KiB
#ifndef CRYPTOPP_HRTIMER_H
|
|
#define CRYPTOPP_HRTIMER_H
|
|
|
|
#include "config.h"
|
|
#ifndef HIGHRES_TIMER_AVAILABLE
|
|
#include <time.h>
|
|
#endif
|
|
|
|
NAMESPACE_BEGIN(CryptoPP)
|
|
|
|
#ifdef HIGHRES_TIMER_AVAILABLE
|
|
typedef word64 TimerWord;
|
|
#else
|
|
typedef clock_t TimerWord;
|
|
#endif
|
|
|
|
//! _
|
|
class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE TimerBase
|
|
{
|
|
public:
|
|
enum Unit {SECONDS = 0, MILLISECONDS, MICROSECONDS, NANOSECONDS};
|
|
TimerBase(Unit unit, bool stuckAtZero)
|
|
: m_timerUnit(unit), m_stuckAtZero(stuckAtZero), m_started(false)
|
|
, m_start(0), m_last(0) {}
|
|
|
|
virtual TimerWord GetCurrentTimerValue() =0; // GetCurrentTime is a macro in MSVC 6.0
|
|
virtual TimerWord TicksPerSecond() =0; // this is not the resolution, just a conversion factor into seconds
|
|
|
|
void StartTimer();
|
|
double ElapsedTimeAsDouble();
|
|
unsigned long ElapsedTime();
|
|
|
|
private:
|
|
double ConvertTo(TimerWord t, Unit unit);
|
|
|
|
Unit m_timerUnit; // HPUX workaround: m_unit is a system macro on HPUX
|
|
bool m_stuckAtZero, m_started;
|
|
TimerWord m_start, m_last;
|
|
};
|
|
|
|
//! measure CPU time spent executing instructions of this thread (if supported by OS)
|
|
/*! /note This only works correctly on Windows NT or later. On Unix it reports process time, and others wall clock time.
|
|
*/
|
|
class ThreadUserTimer : public TimerBase
|
|
{
|
|
public:
|
|
ThreadUserTimer(Unit unit = TimerBase::SECONDS, bool stuckAtZero = false) : TimerBase(unit, stuckAtZero) {}
|
|
TimerWord GetCurrentTimerValue();
|
|
TimerWord TicksPerSecond();
|
|
};
|
|
|
|
//! high resolution timer
|
|
class CRYPTOPP_DLL Timer : public TimerBase
|
|
{
|
|
public:
|
|
Timer(Unit unit = TimerBase::SECONDS, bool stuckAtZero = false) : TimerBase(unit, stuckAtZero) {}
|
|
TimerWord GetCurrentTimerValue();
|
|
TimerWord TicksPerSecond();
|
|
};
|
|
|
|
NAMESPACE_END
|
|
|
|
#endif
|