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.In sys/times.h 45.Ft clock_t 46.Fn times "struct tms *tp" 47.Sh DESCRIPTION 48.Bf -symbolic 49This interface is obsoleted by 50.Xr getrusage 2 51and 52.Xr gettimeofday 2 . 53.Ef 54.Pp 55The 56.Fn times 57function returns the value of time in 58.Dv CLK_TCK Ns 's 59of a second since 600 hours, 0 minutes, 0 seconds, January 1, 1970, Coordinated Universal 61Time. 62.Pp 63It also fills in the structure pointed to by 64.Fa tp 65with time-accounting information. 66.Pp 67The 68.Vt tms 69structure is defined as follows: 70.Bd -literal -offset indent 71struct tms { 72 clock_t tms_utime; 73 clock_t tms_stime; 74 clock_t tms_cutime; 75 clock_t tms_cstime; 76}; 77.Ed 78.Pp 79The elements of this structure are defined as follows: 80.Bl -tag -width ".Va tms_cutime" 81.It Va tms_utime 82The 83.Tn CPU 84time charged for the execution of user instructions. 85.It Va tms_stime 86The 87.Tn CPU 88time charged for execution by the system on behalf of 89the process. 90.It Va tms_cutime 91The sum of the 92.Va tms_utime Ns s 93and 94.Va tms_cutime Ns s 95of the child processes. 96.It Va tms_cstime 97The sum of the 98.Fa tms_stime Ns s 99and 100.Fa tms_cstime Ns s 101of the child processes. 102.El 103.Pp 104All times are in 105.Dv CLK_TCK Ns 's 106of a second. 107.Pp 108The times of a terminated child process are included in the 109.Va tms_cutime 110and 111.Va tms_cstime 112elements of the parent when one of the 113.Xr wait 2 114functions returns the process ID of the terminated child to the parent. 115If an error occurs, 116.Fn times 117returns the value 118.Pq Po Vt clock_t Pc Ns \-1 , 119and sets 120.Va errno 121to indicate the error. 122.Sh ERRORS 123The 124.Fn times 125function 126may fail and set the global variable 127.Va errno 128for any of the errors specified for the library 129routines 130.Xr getrusage 2 131and 132.Xr gettimeofday 2 . 133.Sh SEE ALSO 134.Xr time 1 , 135.Xr getrusage 2 , 136.Xr gettimeofday 2 , 137.Xr wait 2 , 138.Xr clocks 7 139.Sh STANDARDS 140The 141.Fn times 142function 143conforms to 144.St -p1003.1-88 . 145