$home/manuals/plan9_2nd/2/cputime

CPUTIME(2)                    System Calls Manual                   CPUTIME(2)

NAME
       cputime, times - cpu time in this process and children

SYNOPSIS
       #include <u.h>
       #include <libc.h>

       int    times(long t[4])

       double cputime(void)

DESCRIPTION
       If  t  is  non-null,  times fills it in with the number of milliseconds
       spent in user code, system calls, child processes  in  user  code,  and
       child processes in system calls.  Cputime returns the sum of those same
       times, converted to seconds.  Times returns the real time, in millisec‐
       onds used by the process so far.

       These functions read /dev/cputime, opening that file when time is first
       called.

SOURCE
       /sys/src/libc/9sys

SEE ALSO
       cons(3)

                                                                    CPUTIME(2)