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 <config.h>
  32
  33 #if defined (HAVE_UNISTD_H)
  34 #  include <unistd.h>
  35 #endif
  36
  37 #include <stdio.h>
  38 #include "../bashtypes.h"
  39 #include "../shell.h"
  40
  41 #if TIME_WITH_SYS_TIME
  42 #  include <sys/time.h>
  43 #  include <time.h>
  44 #else
  45 #  if defined (HAVE_SYS_TIME_H)
  46 #    include <sys/time.h>
  47 #  else
  48 #    include <time.h>
  49 #  endif
  50 #endif
  51
  52 #if defined (HAVE_SYS_TIMES_H)
  53 #  include <sys/times.h>
  54 #endif /* HAVE_SYS_TIMES_H */
  55
  56 #if defined (HAVE_SYS_RESOURCE_H)
  57 #  include <sys/resource.h>
  58 #endif
  59
  60 #include "common.h"
  61
  62 /* Print the totals for system and user time used. */
  63 int
  64 times_builtin (list)
  65      WORD_LIST *list;
  66 {
  67 #if defined (HAVE_GETRUSAGE) && defined (HAVE_TIMEVAL) && defined (RUSAGE_SELF)
  68   struct rusage self, kids;
  69
  70   getrusage (RUSAGE_SELF, &self);
  71   getrusage (RUSAGE_CHILDREN, &kids);   /* terminated child processes */
  72
  73   print_timeval (stdout, &self.ru_utime);
  74   putchar (' ');
  75   print_timeval (stdout, &self.ru_stime);
  76   putchar ('\n');
  77   print_timeval (stdout, &kids.ru_utime);
  78   putchar (' ');
  79   print_timeval (stdout, &kids.ru_stime);
  80   putchar ('\n');
  81
  82 #else
  83 #  if defined (HAVE_TIMES)
  84   /* As of System V.3, HP-UX 6.5, and other ATT-like systems, this stuff is
  85      returned in terms of clock ticks (HZ from sys/param.h).  C'mon, guys.
  86      This kind of stupid clock-dependent stuff is exactly the reason 4.2BSD
  87      introduced the `timeval' struct. */
  88   struct tms t;
  89
  90   times (&t);
  91
  92   print_time_in_hz (stdout, t.tms_utime);
  93   putchar (' ');
  94   print_time_in_hz (stdout, t.tms_stime);
  95   putchar ('\n');
  96   print_time_in_hz (stdout, t.tms_cutime);
  97   putchar (' ');
  98   print_time_in_hz (stdout, t.tms_cstime);
  99   putchar ('\n');
 100 #  else /* !HAVE_TIMES */
 101   printf ("0.00 0.00\n0.00 0.00\n");
 102 #  endif /* HAVE_TIMES */
 103 #endif /* !HAVE_TIMES */
 104
 105   return (EXECUTION_SUCCESS);
 106 }