mirror of
https://github.com/shadps4-emu/ext-cryptopp.git
synced 2024-11-30 05:10:40 +00:00
68 lines
2.0 KiB
C++
68 lines
2.0 KiB
C++
#ifndef CRYPTOPP_HRTIMER_H
|
|
#define CRYPTOPP_HRTIMER_H
|
|
|
|
#include "config.h"
|
|
|
|
#if !defined(HIGHRES_TIMER_AVAILABLE) || (defined(CRYPTOPP_WIN32_AVAILABLE) && !defined(THREAD_TIMER_AVAILABLE))
|
|
#include <time.h>
|
|
#endif
|
|
|
|
NAMESPACE_BEGIN(CryptoPP)
|
|
|
|
#ifdef HIGHRES_TIMER_AVAILABLE
|
|
typedef word64 TimerWord;
|
|
#else
|
|
typedef clock_t TimerWord;
|
|
#endif
|
|
|
|
/// \class TimerBase
|
|
/// \brief Base class for timers
|
|
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;
|
|
};
|
|
|
|
/// \class ThreadUserTimer
|
|
/// \brief Measure CPU time spent executing instructions of this thread (if supported by OS)
|
|
/// \note ThreadUserTimer only works correctly on Windows NT or later desktops and servers.
|
|
/// On Unix-based it reports process time. On Windows Phone and Windows Store it reports wall
|
|
/// clock time with performance counter precision. On all others it reports 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
|