posix/sys/times.h

   1 /* Copyright (C) 1991, 1992, 1996, 1998, 1999 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 /*
  20  *      POSIX Standard: 4.5.2 Process Times     <sys/times.h>
  21  */
  22
  23 #ifndef _SYS_TIMES_H
  24 #define _SYS_TIMES_H    1
  25
  26 #include <features.h>
  27
  28 #define __need_clock_t
  29 #include <time.h>
  30
  31
  32 __BEGIN_DECLS
  33
  34 /* Structure describing CPU time used by a process and its children.  */
  35 struct tms
  36   {
  37     clock_t tms_utime;          /* User CPU time.  */
  38     clock_t tms_stime;          /* System CPU time.  */
  39
  40     clock_t tms_cutime;         /* User CPU time of dead children.  */
  41     clock_t tms_cstime;         /* System CPU time of dead children.  */
  42   };
  43
  44
  45 /* Store the CPU time used by this process and all its
  46    dead children (and their dead children) in BUFFER.
  47    Return the elapsed real time, or (clock_t) -1 for errors.
  48    All times are in CLK_TCKths of a second.  */
  49 extern clock_t times (struct tms *__buffer) __THROW;
  50
  51 __END_DECLS
  52
  53 #endif /* sys/times.h   */