testClock.cpp

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#include <cstdio>
#include <cmath>
#include <iostream>
#include "DGtal/base/Common.h"
#include "DGtal/base/Clock.h"
 
using namespace DGtal;
using namespace std;
 
bool test_minimalTick()
{
  double tick;
  Clock c;
 
  trace.info() << c <<std::endl;
 
  c.startClock();
  tick = c.stopClock();
  trace.info() << "Minimal tick: "<< tick <<endl;
  return (tick >= 0);
}
 
bool test_loopTick()
{
  double tick,tmp=0;
 
  Clock c;
  c.startClock();
  for (unsigned int i=0 ; i< 4334450; i++)
    tmp = cos(tmp+i);
 
  tick = c.stopClock();
  trace.info()<< "Loop tick: "<< tick <<endl;
  return (tick >= 0);
}
 
bool test_MultipleLoop()
{
  double tick1,tick2,tick3,tmp=0;
 
  Clock c,c2,c3;
 
  c3.startClock();
  c.startClock();
  for (unsigned int i=0 ; i< 43350; i++)
    tmp = cos(tmp+i);
 
  c2.startClock();
  for (unsigned int i=0 ; i< 43350; i++)
    tmp = cos(tmp+i);
 
  tick2 = c2.stopClock();
 
  for (unsigned int i=0 ; i< 43450; i++)
    tmp = cos(tmp+i);
 
  tick1 = c.stopClock();
  tick3=c3.stopClock();
 
  trace.info()<< "Loop tick1: "<< tick1
              <<" Loop tick2: "<< tick2
              << " total: "<< tick3 <<endl;
  return ((tick3 >= tick1) && (tick1 >= 0));
}
 
bool test_RestartClock()
{
  double tmp = 0.0;
  double tick_total=0., tick_accum=0.;
  Clock c_total, c_accum;
 
  c_total.startClock();
  c_accum.startClock();
 
#if !defined(WIN32)
  
  for (unsigned int i=0 ; i< 43350; i++)
    tmp = cos(tmp+i);
        usleep(20000);
  tick_accum += c_accum.restartClock();
 
  for (unsigned int i=0 ; i< 43350; i++)
    tmp = cos(tmp+i);
        usleep(20000);
  tick_accum += c_accum.restartClock();
 
  for (unsigned int i=0 ; i< 43350; i++)
    tmp = cos(tmp+i);
        usleep(20000);
  tick_accum += c_accum.restartClock();
 
  tick_total = c_total.stopClock();
 
        double delta = tick_total-tick_accum;
 
  trace.info()<< "Loop tick_total: " << tick_total
              << " Loop tick_accum: " << tick_accum
              << " Delta = "<<delta << endl;
 
  //return delta>=0 && delta<1e-4;
#endif
  return true;
}
 
 
 
int main()
{
  if (test_minimalTick() && test_loopTick() && test_MultipleLoop() && test_RestartClock())
    return 0;
  else
    return 1;
 
}