ITAPosixRealtimeClock.cpp

// $Id: ITAPosixRealtimeClock.cpp 3499 2013-12-01 18:28:40Z stienen $

#include "ITAPosixRealtimeClock.h"

#include <ITAException.h>

#ifndef WIN32

#include <time.h>


ITAPosixRealtimeClock* ITAPosixRealtimeClock::m_pInstance = NULL;

ITAPosixRealtimeClock* ITAPosixRealtimeClock::getInstance()
{
	if (!m_pInstance) m_pInstance = new ITAPosixRealtimeClock();
	return m_pInstance;
}

ITAPosixRealtimeClock::ITAPosixRealtimeClock()
{
	struct timespec ts;
	int iResult = clock_getres(CLOCK_REALTIME, &ts);
	m_dResolution = ts.tv_sec;
}

double ITAPosixRealtimeClock::getResolution() const
{
	return m_dResolution;
}

double ITAPosixRealtimeClock::getFrequency() const
{
	return 1/m_dResolution;
}

inline double ITAPosixRealtimeClock::getTime()
{
	struct timespec ts;
	clock_gettime(CLOCK_REALTIME, &ts);
	return ts.tv_sec +  ts.tv_nsec / (double) 1000000000;
}

#else // WIN32

#include <cstdlib>

// Dummy implementation - does nothing, but allows clean compiling and linking

ITAPosixRealtimeClock* ITAPosixRealtimeClock::m_pInstance = NULL;

ITAPosixRealtimeClock* ITAPosixRealtimeClock::getInstance() { ITA_EXCEPT0( NOT_IMPLEMENTED ); return NULL; }
ITAPosixRealtimeClock::ITAPosixRealtimeClock() { ITA_EXCEPT0( NOT_IMPLEMENTED ); }
double ITAPosixRealtimeClock::getResolution() const { ITA_EXCEPT0( NOT_IMPLEMENTED ); return 0; }
double ITAPosixRealtimeClock::getFrequency() const { ITA_EXCEPT0( NOT_IMPLEMENTED ); return 0; }
double ITAPosixRealtimeClock::getTime() { ITA_EXCEPT0( NOT_IMPLEMENTED ); return 0; }

#endif // WIN32