ITIMER_REAL
if (setitimer(ITIMER_REAL, &itv, NULL) != 0)
if (setitimer(ITIMER_REAL, &itv, NULL) != 0)
case ITIMER_REAL:
if (setitimer(ITIMER_REAL, &value, &oldValue) < 0)
if (setitimer(ITIMER_REAL, &value, &oldValue) < 0)