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Diffstat (limited to 'man/man3/cputime.3')
| -rw-r--r-- | man/man3/cputime.3 | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/man/man3/cputime.3 b/man/man3/cputime.3 new file mode 100644 index 00000000..badea40c --- /dev/null +++ b/man/man3/cputime.3 @@ -0,0 +1,34 @@ +.TH CPUTIME 3 +.SH NAME +cputime, times \- cpu time in this process and children +.SH SYNOPSIS +.B #include <u.h> +.br +.B #include <libc.h> +.PP +.ta \w'\fLdouble 'u +.B +int times(long t[4]) +.PP +.B +double cputime(void) +.SH DESCRIPTION +If +.I t +is non-null, +.I 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. +.I Cputime +returns the sum of those same times, converted to seconds. +.I Times +returns the elapsed real time, in milliseconds, that the process has been running. +.PP +These functions read +.BR /dev/cputime , +opening that file when they are first called. +.SH SOURCE +.B /sys/src/libc/9sys +.SH SEE ALSO +.IR cons (3) |