ITIMER_VIRTUAL
ATF_REQUIRE(getitimer(ITIMER_VIRTUAL, &it) == 0);
which = ITIMER_VIRTUAL;
case ITIMER_VIRTUAL:
if (which == ITIMER_VIRTUAL || which == ITIMER_PROF) {
timespecisset(&pr->ps_timer[ITIMER_VIRTUAL].it_value) &&
itimerdecr(&pr->ps_timer[ITIMER_VIRTUAL], &elapsed) == 0) {
if (timespecisset(&ps->ps_timer[ITIMER_VIRTUAL].it_value) ||
if (setitimer(ITIMER_VIRTUAL, &itimer, NULL) == -1) {