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) 1987-2009 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
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation, either version 3 of the License, or
  11 (at your option) any later version.
  12
  13 Bash is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with Bash.  If not, see <http://www.gnu.org/licenses/>.
  20
  21 $PRODUCES times.c
  22
  23 $BUILTIN times
  24 $FUNCTION times_builtin
  25 $SHORT_DOC times
  26 Display process times.
  27
  28 Prints the accumulated user and system times for the shell and all of its
  29 child processes.
  30
  31 Exit Status:
  32 Always succeeds.
  33 $END
  34
  35 #include <config.h>
  36
  37 #if defined (HAVE_UNISTD_H)
  38 #  ifdef _MINIX
  39 #    include <sys/types.h>
  40 #  endif
  41 #  include <unistd.h>
  42 #endif
  43
  44 #include <stdio.h>
  45 #include "../bashtypes.h"
  46 #include "../shell.h"
  47
  48 #include <posixtime.h>
  49
  50 #if defined (HAVE_SYS_TIMES_H)
  51 #  include <sys/times.h>
  52 #endif /* HAVE_SYS_TIMES_H */
  53
  54 #if defined (HAVE_SYS_RESOURCE_H) && !defined (RLIMTYPE)
  55 #  include <sys/resource.h>
  56 #endif
  57
  58 #include "common.h"
  59
  60 /* Print the totals for system and user time used. */
  61 int
  62 times_builtin (list)
  63      WORD_LIST *list;
  64 {
  65 #if defined (HAVE_GETRUSAGE) && defined (HAVE_TIMEVAL) && defined (RUSAGE_SELF)
  66   struct rusage self, kids;
  67
  68   USE_VAR(list);
  69
  70   if (no_options (list))
  71     return (EX_USAGE);
  72
  73   getrusage (RUSAGE_SELF, &self);
  74   getrusage (RUSAGE_CHILDREN, &kids);   /* terminated child processes */
  75
  76   print_timeval (stdout, &self.ru_utime);
  77   putchar (' ');
  78   print_timeval (stdout, &self.ru_stime);
  79   putchar ('\n');
  80   print_timeval (stdout, &kids.ru_utime);
  81   putchar (' ');
  82   print_timeval (stdout, &kids.ru_stime);
  83   putchar ('\n');
  84
  85 #else
  86 #  if defined (HAVE_TIMES)
  87   /* This uses the POSIX.1/XPG5 times(2) interface, which fills in a
  88      `struct tms' with values of type clock_t. */
  89   struct tms t;
  90
  91   USE_VAR(list);
  92
  93   if (no_options (list))
  94     return (EX_USAGE);
  95
  96   times (&t);
  97
  98   print_clock_t (stdout, t.tms_utime);
  99   putchar (' ');
 100   print_clock_t (stdout, t.tms_stime);
 101   putchar ('\n');
 102   print_clock_t (stdout, t.tms_cutime);
 103   putchar (' ');
 104   print_clock_t (stdout, t.tms_cstime);
 105   putchar ('\n');
 106
 107 #  else /* !HAVE_TIMES */
 108
 109   USE_VAR(list);
 110
 111   if (no_options (list))
 112     return (EX_USAGE);
 113   printf ("0.00 0.00\n0.00 0.00\n");
 114
 115 #  endif /* HAVE_TIMES */
 116 #endif /* !HAVE_TIMES */
 117
 118   return (sh_chkwrite (EXECUTION_SUCCESS));
 119 }