05-03-2017
I'm not sure if his requirement is rigid, but he did say he needed to reflect the elapsed time "inside" his script. If he misspoke, then time is what I'd use and your solution looks nice.
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LEARN ABOUT FREEBSD
binuptime
MICROUPTIME(9) BSD Kernel Developer's Manual MICROUPTIME(9)
NAME
binuptime, getbinuptime, microuptime, getmicrouptime, nanouptime, getnanouptime, sbinuptime, getsbinuptime -- get the time elapsed since boot
SYNOPSIS
#include <sys/time.h>
void
binuptime(struct bintime *bt);
void
getbinuptime(struct bintime *bt);
void
microuptime(struct timeval *tv);
void
getmicrouptime(struct timeval *tv);
void
nanouptime(struct timespec *ts);
void
getnanouptime(struct timespec *tsp);
sbintime_t
sbinuptime(void);
sbintime_t
getsbinuptime(void);
DESCRIPTION
The binuptime() and getbinuptime() functions store the time elapsed since boot as a struct bintime at the address specified by bt. The
microuptime() and getmicrouptime() functions perform the same utility, but record the elapsed time as a struct timeval instead. Similarly
the nanouptime() and getnanouptime() functions store the elapsed time as a struct timespec. The sbinuptime() and getsbinuptime() functions
return the time elapsed since boot as a sbintime_t.
The binuptime(), microuptime(), nanouptime(), and sbinuptime() functions always query the timecounter to return the current time as precisely
as possible. Whereas getbinuptime(), getmicrouptime(), getnanouptime(), and getsbinuptime() functions are abstractions which return a less
precise, but faster to obtain, time.
The intent of the getbinuptime(), getmicrouptime(), getnanouptime(), and getsbinuptime() functions is to enforce the user's preference for
timer accuracy versus execution time.
SEE ALSO
bintime(9), getbintime(9), getmicrotime(9), getnanotime(9), microtime(9), nanotime(9), tvtohz(9)
AUTHORS
This manual page was written by Kelly Yancey <kbyanc@posi.net>.
BSD
July 25, 2013 BSD