times(3)

NAME

times - process times

Standard C Library (libc, -lc)

#include <sys/times.h>
clock_t
times(struct tms *tp);

This interface is obsoleted by getrusage(2) and gettimeof
day(2).
The times() function returns the value of time in CLK_TCK's
of a second since 0 hours, 0 minutes, 0 seconds, January 1, 1970, Coor
dinated Universal Time.
It also fills in the structure pointed to by tp with time
accounting information.
The tms structure is defined as follows:: struct tms {
clock_t tms_utime;
clock_t tms_stime;
clock_t tms_cutime;
clock_t tms_cstime;; };
The elements of this structure are defined as follows:
tms_utime The CPU time charged for the execution of
user instruc: tions.
tms_stime The CPU time charged for execution by the
system on: behalf of the process.
tms_cutime The sum of the tms_utimes and tms_cutimes of
the child: processes.
tms_cstime The sum of the tms_stimes and tms_cstimes of
the child: processes.
All times are in CLK_TCK's of a second.
The times of a terminated child process are included in the
tms_cutime
and tms_cstime elements of the parent when one of the
wait(2) functions returns the process ID of the terminated child to the par
ent. If an
error occurs, times() returns the value ((clock_t)-1), and
sets errno to indicate the error.