builtins/times.def

   1 This file is times.def, from which is created times.c.
   2 It implements the builtin "times" in Bash.
   3
   4 Copyright (C) 1987, 1989, 1991 Free Software Foundation, Inc.
   5
   6 This file is part of GNU Bash, the Bourne Again SHell.
   7
   8 Bash is free software; you can redistribute it and/or modify it under
   9 the terms of the GNU General Public License as published by the Free
  10 Software Foundation; either version 1, or (at your option) any later
  11 version.
  12
  13 Bash is distributed in the hope that it will be useful, but WITHOUT ANY
  14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16 for more details.
  17
  18 You should have received a copy of the GNU General Public License along
  19 with Bash; see the file COPYING.  If not, write to the Free Software
  20 Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  21
  22 $PRODUCES times.c
  23
  24 $BUILTIN times
  25 $FUNCTION times_builtin
  26 $SHORT_DOC times
  27 Print the accumulated user and system times for processes run from
  28 the shell.
  29 $END
  30
  31 #include "../shell.h"
  32 #include <sys/types.h>
  33
  34 #if defined (hpux) || defined (USGr4) || defined (XD88) || defined (USGr3)
  35 #  undef HAVE_RESOURCE
  36 #endif /* hpux || USGr4 || XD88 || USGr3 */
  37
  38 #if defined (_POSIX_VERSION) || !defined (HAVE_RESOURCE)
  39 #  include <sys/times.h>
  40 #else /* !_POSIX_VERSION && HAVE_RESOURCE */
  41 #  include <sys/time.h>
  42 #  include <sys/resource.h>
  43 #endif /* !_POSIX_VERSION && HAVE_RESOURCE */
  44
  45 /* Print the totals for system and user time used.  The
  46    information comes from variables in jobs.c used to keep
  47    track of this stuff. */
  48 times_builtin (list)
  49      WORD_LIST *list;
  50 {
  51 #if !defined (_POSIX_VERSION) && defined (HAVE_RESOURCE) && defined (RUSAGE_SELF)
  52   struct rusage self, kids;
  53
  54   getrusage (RUSAGE_SELF, &self);
  55   getrusage (RUSAGE_CHILDREN, &kids);   /* terminated child processes */
  56
  57   print_timeval (&self.ru_utime);
  58   putchar (' ');
  59   print_timeval (&self.ru_stime);
  60   putchar ('\n');
  61   print_timeval (&kids.ru_utime);
  62   putchar (' ');
  63   print_timeval (&kids.ru_stime);
  64   putchar ('\n');
  65
  66 #else /* _POSIX_VERSION || !HAVE_RESOURCE || !RUSAGE_SELF */
  67 #  if !defined (BrainDeath)
  68   struct tms t;
  69
  70   times (&t);
  71
  72   /* As of System V.3, HP-UX 6.5, and other ATT-like systems, this stuff is
  73      returned in terms of clock ticks (HZ from sys/param.h).  C'mon, guys.
  74      This kind of stupid clock-dependent stuff is exactly the reason 4.2BSD
  75      introduced the `timeval' struct. */
  76
  77   print_time_in_hz (t.tms_utime);
  78   putchar (' ');
  79   print_time_in_hz (t.tms_stime);
  80   putchar ('\n');
  81   print_time_in_hz (t.tms_cutime);
  82   putchar (' ');
  83   print_time_in_hz (t.tms_cstime);
  84   putchar ('\n');
  85 #  endif /* BrainDeath */
  86 #endif /* _POSIX_VERSION || !HAVE_RESOURCE || !RUSAGE_SELF */
  87
  88   return (EXECUTION_SUCCESS);
  89 }