gdb/gdb_gcore.sh

   1 #!/bin/sh
   2
   3 #   Copyright (C) 2003, 2005, 2007, 2008 Free Software Foundation, Inc.
   4
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 #
  19 # gcore.sh
  20 # Script to generate a core file of a running program.
  21 # It starts up gdb, attaches to the given PID and invokes the gcore command.
  22 #
  23
  24 if [ "$#" -eq "0" ]
  25 then
  26     echo "usage:  gcore [-o filename] pid"
  27     exit 2
  28 fi
  29
  30 # Need to check for -o option, but set default basename to "core".
  31 name=core
  32
  33 if [ "$1" = "-o" ]
  34 then
  35     if [ "$#" -lt "3" ]
  36     then
  37         # Not enough arguments.
  38         echo "usage:  gcore [-o filename] pid"
  39         exit 2
  40     fi
  41     name=$2
  42
  43     # Shift over to start of pid list
  44     shift; shift
  45 fi
  46
  47 # Create a temporary file.  Use mktemp if available, but cope if it is not.
  48 tmpfile=`mktemp ${name}.XXXXXX 2>/dev/null` || {
  49   tmpfile=${name}.$$
  50   if test -e $tmpfile; then
  51     echo "Could not create temporary file $tmpfile"
  52     exit 1
  53   fi
  54   touch $tmpfile
  55 }
  56 trap "rm -f $tmpfile" EXIT
  57
  58 # Initialise return code.
  59 rc=0
  60
  61 # Loop through pids
  62 for pid in $*
  63 do
  64         # Write gdb script for pid $pid.
  65         cat >>$tmpfile <<EOF
  66 attach $pid
  67 gcore $name.$pid
  68 detach
  69 quit
  70 EOF
  71
  72         gdb -x $tmpfile -batch
  73
  74         if [ -r $name.$pid ] ; then
  75             rc=0
  76         else
  77             echo gcore: failed to create $name.$pid
  78             rc=1
  79             break
  80         fi
  81
  82
  83 done
  84
  85 exit $rc