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 BSD 4 38.Sh NAME 39.Nm times 40.Nd process times 41.Sh SYNOPSIS 42.Fd #include <sys/times.h> 43.Ft clock_t 44.Fn times "struct tms *tp" 45.Sh DESCRIPTION 46.Bf -symbolic 47This interface is obsoleted by getrusage(2) 48and gettimeofday(3). 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.Fa tms 65structure is defined as follows: 66.Bd -literal -offset indent 67typedef struct { 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 tms_cutime 77.It Fa tms_utime 78The 79.Tn CPU 80time charged for the execution of user instructions. 81.It Fa tms_stime 82The 83.Tn CPU 84time charged for execution by the system on behalf of 85the process. 86.It Fa tms_cutime 87The sum of the 88.Fa tms_utime s 89and 90.Fa tms_cutime s 91of the child processes. 92.It Fa 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.Fa tms_cutime 106and 107.Fa 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 (clock_t)\-1 , 115and sets errno to indicate the error. 116.Sh ERRORS 117The 118.Fn times 119function 120may fail and set the global variable 121.Va errno 122for any of the errors specified for the library 123routines 124.Xr getrusage 2 125and 126.Xr gettimeofday 2 . 127.Sh SEE ALSO 128.Xr time 1 , 129.Xr getrusage 2 , 130.Xr gettimeofday 2 , 131.Xr wait 2 , 132.Xr clocks 7 133.Sh STANDARDS 134The 135.Fn times 136function 137conforms to 138.St -p1003.1-88 . 139