RUSAGE_THREAD
if (who == RUSAGE_THREAD) {
who != RUSAGE_THREAD)
who != RUSAGE_THREAD)
getrusage(RUSAGE_THREAD, &rusage);
#ifndef RUSAGE_THREAD
if (getrusage(RUSAGE_THREAD, &r))
if (getrusage(RUSAGE_THREAD, &r))
getrusage(RUSAGE_THREAD, &ru);