1.\" Copyright (c) 1990, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)times.3 8.1 (Berkeley) 6/4/93 33.\" $FreeBSD$ 34.\" 35.Dd June 4, 1993 36.Dt TIMES 3 37.Os 38.Sh NAME 39.Nm times 40.Nd process times 41.Sh LIBRARY 42.Lb libc 43.Sh SYNOPSIS 44.Fd #include <sys/times.h> 45.Ft clock_t 46.Fn times "struct tms *tp" 47.Sh DESCRIPTION 48.Bf -symbolic 49This interface is obsoleted by getrusage(2) 50and gettimeofday(3). 51.Ef 52.Pp 53The 54.Fn times 55function returns the value of time in 56.Dv CLK_TCK Ns 's 57of a second since 580 hours, 0 minutes, 0 seconds, January 1, 1970, Coordinated Universal 59Time. 60.Pp 61It also fills in the structure pointed to by 62.Fa tp 63with time-accounting information. 64.Pp 65The 66.Fa tms 67structure is defined as follows: 68.Bd -literal -offset indent 69typedef struct { 70 clock_t tms_utime; 71 clock_t tms_stime; 72 clock_t tms_cutime; 73 clock_t tms_cstime; 74} 75.Ed 76.Pp 77The elements of this structure are defined as follows: 78.Bl -tag -width tms_cutime 79.It Fa tms_utime 80The 81.Tn CPU 82time charged for the execution of user instructions. 83.It Fa tms_stime 84The 85.Tn CPU 86time charged for execution by the system on behalf of 87the process. 88.It Fa tms_cutime 89The sum of the 90.Fa tms_utime s 91and 92.Fa tms_cutime s 93of the child processes. 94.It Fa tms_cstime 95The sum of the 96.Fa tms_stime Ns s 97and 98.Fa tms_cstime Ns s 99of the child processes. 100.El 101.Pp 102All times are in 103.Dv CLK_TCK Ns 's 104of a second. 105.Pp 106The times of a terminated child process are included in the 107.Fa tms_cutime 108and 109.Fa tms_cstime 110elements of the parent when one of the 111.Xr wait 2 112functions returns the process ID of the terminated child to the parent. 113If an error occurs, 114.Fn times 115returns the value 116.Pq (clock_t)\-1 , 117and sets errno to indicate the error. 118.Sh ERRORS 119The 120.Fn times 121function 122may fail and set the global variable 123.Va errno 124for any of the errors specified for the library 125routines 126.Xr getrusage 2 127and 128.Xr gettimeofday 2 . 129.Sh SEE ALSO 130.Xr time 1 , 131.Xr getrusage 2 , 132.Xr gettimeofday 2 , 133.Xr wait 2 , 134.Xr clocks 7 135.Sh STANDARDS 136The 137.Fn times 138function 139conforms to 140.St -p1003.1-88 . 141