RUSAGE_SELF
if (getrusage(RUSAGE_SELF, &ru) < 0)
if (getrusage(RUSAGE_SELF, &rusage) == 0) {
(void) getrusage(RUSAGE_SELF, &ru0);
(void) getrusage(RUSAGE_SELF, &ru1);
getrusage(RUSAGE_SELF, &ru); \
getrusage(RUSAGE_SELF, &ru); \
getrusage(RUSAGE_SELF, &ru); \
getrusage(RUSAGE_SELF, &ru); \
case RUSAGE_SELF: