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OPTIONAL
SYNOPSIS
int * rusage(void)
DESCRIPTION
Return an array with current system resource usage statistics,
as returned by the getrusage(2) of Unix.
namely: utime, stime, maxrss, rus.ru_ixrss, rus.ru_idrss,
rus.ru_isrss, rus.ru_minflt, rus.ru_majflt, rus.ru_nswap,
rus.ru_inblock, rus.ru_oublock, rus.ru_msgsnd,
rus.ru_msgrcv, rus.ru_nsignals, rus.ru_nvcsw,
rus.ru_nivcsw
This function is optional.
SEE ALSO
<sys/resource.h>(Unix)