TigTimer.cxx

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

#include "TigTimer.h"


TigTimer::TigTimer(int period_msec,TimerHandler handler)
  {
    assert(handler != NULL);
    fPeriod_msec = period_msec;
    fHandler  = handler;
    fLastTime = GetTimeSec();
    Start(period_msec,kTRUE);
  }

//GetTimeSec
double 
TigTimer::GetTimeSec()
{
  struct timeval tv;
  gettimeofday(&tv,NULL);
  return tv.tv_sec + 0.000001*tv.tv_usec;
}


//---- Notify
 Bool_t 
 TigTimer::Notify()
  {
    double t = GetTimeSec();
    //printf("timer notify, period %f should be %f!\n",t-fLastTime,fPeriod_msec*0.001);

    if (t - fLastTime >= 0.9*fPeriod_msec*0.001)
      {
	//printf("timer: call handler %p\n",fHandler);
	if (fHandler)
	  (*fHandler)();

	fLastTime = t;
      }

    Reset();
    return kTRUE;
  }