/*!
 * \file include/utils/time.h
 * \brief Time handling utilities
 *
 * \author xythobuz
 * \author Mongoose
 */

#include "utils/time.h"

struct timeval system_timer_start;
struct timeval system_timer_stop;
struct timezone system_timer_tz;

unsigned int systemTimerGet() {
    gettimeofday(&system_timer_stop, &system_timer_tz);

    if (system_timer_start.tv_usec > system_timer_stop.tv_usec) {
        system_timer_stop.tv_usec += 1000000;
        system_timer_stop.tv_sec--;
    }

    system_timer_stop.tv_usec -= system_timer_start.tv_usec;
    system_timer_stop.tv_sec -= system_timer_start.tv_sec;

    return ((system_timer_stop.tv_sec - system_timer_start.tv_sec) * 1000)
        + ((system_timer_stop.tv_usec - system_timer_start.tv_usec) / 1000);
}

void systemTimerReset() {
    gettimeofday(&system_timer_start, &system_timer_tz);
}