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.\" 34.Dd June 4, 1993 35.Dt TIMES 3 36.Os BSD 4 37.Sh NAME 38.Nm times 39.Nd process times 40.Sh SYNOPSIS 41.Fd #include <sys/times.h> 42.Ft clock_t 43.Fn times "struct tms *tp" 44.Sh DESCRIPTION 45.Bf -symbolic 46This interface is obsoleted by getrusage(2) 47and gettimeofday(3). 48.Ef 49.Pp 50The 51.Fn times 52function returns the value of time in 53.Dv CLK_TCK Ns 's 54of a second since 550 hours, 0 minutes, 0 seconds, January 1, 1970, Coordinated Universal 56Time. 57.Pp 58It also fills in the structure pointed to by 59.Fa tp 60with time-accounting information. 61.Pp 62The 63.Fa tms 64structure is defined as follows: 65.Bd -literal -offset indent 66typedef struct { 67 clock_t tms_utime; 68 clock_t tms_stime; 69 clock_t tms_cutime; 70 clock_t tms_cstime; 71} 72.Ed 73.Pp 74The elements of this structure are defined as follows: 75.Bl -tag -width tms_cutime 76.It Fa tms_utime 77The 78.Tn CPU 79time charged for the execution of user instructions. 80.It Fa tms_stime 81The 82.Tn CPU 83time charged for execution by the system on behalf of 84the process. 85.It Fa tms_cutime 86The sum of the 87.Fa tms_utime s 88and 89.Fa tms_cutime s 90of the child processes. 91.It Fa tms_cstime 92The sum of the 93.Fa tms_stime Ns s 94and 95.Fa tms_cstime Ns s 96of the child processes. 97.El 98.Pp 99All times are in 100.Dv CLK_TCK Ns 's 101of a second. 102.Pp 103The times of a terminated child process are included in the 104.Fa tms_cutime 105and 106.Fa tms_cstime 107elements of the parent when one of the 108.Xr wait 2 109functions returns the process ID of the terminated child to the parent. 110If an error occurs, 111.Fn times 112returns the value 113.Pq (clock_t)\-1 , 114and sets errno to indicate the error. 115.Sh ERRORS 116The 117.Fn times 118function 119may fail and set the global variable 120.Va errno 121for any of the errors specified for the library 122routines 123.Xr getrusage 2 124and 125.Xr gettimeofday 2 . 126.Sh SEE ALSO 127.Xr time 1 , 128.Xr getrusage 2 , 129.Xr gettimeofday 2 , 130.Xr wait 2 131.Sh STANDARDS 132The 133.Fn times 134function 135conforms to 136.St -p1003.1-88 . 137