MPCount/Timer.cpp at main · ComplexNetworks-DCC-FCUP/MPCount · GitHub

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/*
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88  `8b  `8b  88    `8b    d8'   `88                              88
88   88   88 a88aaaa8P'    88        .d8888b. dP    dP 88d888b. d8888P
88   88   88  88           88        88'  `88 88    88 88'  `88   88
88   88   88  88           Y8.   .88 88.  .88 88.  .88 88    88   88
dP   dP   dP  dP            Y88888P' `88888P' `88888P' dP    dP   dP


MPCount

Pedro M P Ribeiro - pribeiro@fc.up.pt
Andre Couto Meira - andre.meira@fc.up.pt

*/
/*
 * Timing utilities for measuring execution performance.
 *
 * Last Update: 02/2026
 *
 */

#include "Timer.h"

// Static variables
struct timeval Timer::cstart[MAX_TIMERS];
struct timeval Timer::cend[MAX_TIMERS];

// Stop the clock of a timer
void Timer::start(int n) {
  if (n >= 0 && n < MAX_TIMERS)
    gettimeofday(&cstart[n], NULL);
}

// Elapsed time of a timer
void Timer::stop(int n) {
  if (n >= 0 && n < MAX_TIMERS)
    gettimeofday(&cend[n], NULL);
}

// Make the difference
double Timer::elapsed(int n) {
  if (n >= 0 && n < MAX_TIMERS)
    return (cend[n].tv_sec - cstart[n].tv_sec) +
           (double)(cend[n].tv_usec - cstart[n].tv_usec) / 1000000.0;
  else
    return 0;
}