| rsc | cfa37a7 | 2004-04-10 18:53:55 +0000 | [diff] [blame] | 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 |
| rsc | b5fdffe | 2004-04-19 19:22:56 +0000 | [diff] [blame] | 32 | .B /usr/local/plan9/src/libc/9sys |
| rsc | cfa37a7 | 2004-04-10 18:53:55 +0000 | [diff] [blame] | 33 | .SH SEE ALSO |
| 34 | .IR cons (3) |
