timeLib.c

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// File Name: timeLib.c
//
// Written by: Tom Galluzzo (galluzzo AT gmail DOT com)
//
// Version: 3.3.0a
//
// Date: 08/07/08
//
// Description:	CIMAR timing library header file

#include "utils/timeLib.h"

#ifdef WIN32
	#include <time.h>
	#include <windows.h>
	
	double getTimeSeconds(void)
	{
		static char init = 0;
		static TIMECAPS timerInfo;
		
		if(!init)
		{
			timeGetDevCaps(&timerInfo, sizeof(TIMECAPS));
			timeBeginPeriod(timerInfo.wPeriodMin);
			init = 1;
		}	
		
		return (double) (timeGetTime() / 1000.0);
	}

	double ojGetTimeSec(void)
	{
		// TODO: the following code could have a 1 second inaccuracy if a second transition occurs after the GetSystemTime call
		SYSTEMTIME st;
		GetSystemTime(&st);
		return time(NULL) + st.wMilliseconds / 1000.0;
	}
	
	void ojSleepMsec(int msec)
	{
		Sleep(msec);
	}

#else

	#include <sys/time.h>
	#include <time.h>
	#include <unistd.h>

	double getTimeSeconds(void)
	{
	      static struct timeval time;
	      
	      gettimeofday(&time, NULL);
	      
	      return (double)time.tv_sec + (double)time.tv_usec/1.0e6;
	}

	double ojGetTimeSec(void)
	{
		  static struct timeval time;
	      
		  gettimeofday(&time, NULL);
	      
		  return (double)time.tv_sec + (double)time.tv_usec/1.0e6;
	}

	void ojSleepMsec(int msec)
	{
		usleep(msec * 1000);
	}

#endif