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.\" 4. Neither the name of the University nor the names of its contributors 13.\" may be used to endorse or promote products derived from this software 14.\" without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" @(#)times.3 8.1 (Berkeley) 6/4/93 29.\" $FreeBSD$ 30.\" 31.Dd June 4, 1993 32.Dt TIMES 3 33.Os 34.Sh NAME 35.Nm times 36.Nd process times 37.Sh LIBRARY 38.Lb libc 39.Sh SYNOPSIS 40.In sys/times.h 41.Ft clock_t 42.Fn times "struct tms *tp" 43.Sh DESCRIPTION 44.Bf -symbolic 45This interface is obsoleted by 46.Xr getrusage 2 47and 48.Xr gettimeofday 2 . 49.Ef 50.Pp 51The 52.Fn times 53function returns the value of time in 54.Dv CLK_TCK Ns 's 55of a second since 560 hours, 0 minutes, 0 seconds, January 1, 1970, Coordinated Universal 57Time. 58.Pp 59It also fills in the structure pointed to by 60.Fa tp 61with time-accounting information. 62.Pp 63The 64.Vt tms 65structure is defined as follows: 66.Bd -literal -offset indent 67struct tms { 68 clock_t tms_utime; 69 clock_t tms_stime; 70 clock_t tms_cutime; 71 clock_t tms_cstime; 72}; 73.Ed 74.Pp 75The elements of this structure are defined as follows: 76.Bl -tag -width ".Va tms_cutime" 77.It Va tms_utime 78The 79.Tn CPU 80time charged for the execution of user instructions. 81.It Va tms_stime 82The 83.Tn CPU 84time charged for execution by the system on behalf of 85the process. 86.It Va tms_cutime 87The sum of the 88.Va tms_utime Ns s 89and 90.Va tms_cutime Ns s 91of the child processes. 92.It Va tms_cstime 93The sum of the 94.Fa tms_stime Ns s 95and 96.Fa tms_cstime Ns s 97of the child processes. 98.El 99.Pp 100All times are in 101.Dv CLK_TCK Ns 's 102of a second. 103.Pp 104The times of a terminated child process are included in the 105.Va tms_cutime 106and 107.Va tms_cstime 108elements of the parent when one of the 109.Xr wait 2 110functions returns the process ID of the terminated child to the parent. 111If an error occurs, 112.Fn times 113returns the value 114.Pq Po Vt clock_t Pc Ns \-1 , 115and sets 116.Va errno 117to 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