1 .TH CPUTIME 3
2 .SH NAME
3 cputime, times \- cpu time in this process and children
4 .SH SYNOPSIS
5 .B #include <u.h>
6 .br
7 .B #include <libc.h>
8 .PP
9 .ta \w'\fLdouble 'u
10 .B
11 int	times(long t[4])
12 .PP
13 .B
14 double	cputime(void)
15 .SH DESCRIPTION
16 If
17 .I t
18 is non-null,
19 .I times
20 fills it in
21 with the number of milliseconds spent in user code, system calls,
22 child processes in user code, and child processes in system calls.
23 .I Cputime
24 returns the sum of those same times, converted to seconds.
25 .I Times
26 returns the elapsed real time, in milliseconds, that the process has been running.
27 .PP
28 These functions read
29 .BR /dev/cputime ,
30 opening that file when they are first called.
31 .SH SOURCE
32 .B /usr/local/plan9/src/libc/9sys
33 .SH SEE ALSO
34 .IR cons (3)