gdb/gdb_gcore.sh

   1 #!/bin/sh
   2
   3 #   Copyright (C) 2003, 2005, 2007, 2008, 2009, 2010
   4 #   Free Software Foundation, Inc.
   5
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 #
  20 # gcore.sh
  21 # Script to generate a core file of a running program.
  22 # It starts up gdb, attaches to the given PID and invokes the gcore command.
  23 #
  24
  25 if [ "$#" -eq "0" ]
  26 then
  27     echo "usage:  gcore [-o filename] pid"
  28     exit 2
  29 fi
  30
  31 # Need to check for -o option, but set default basename to "core".
  32 name=core
  33
  34 if [ "$1" = "-o" ]
  35 then
  36     if [ "$#" -lt "3" ]
  37     then
  38         # Not enough arguments.
  39         echo "usage:  gcore [-o filename] pid"
  40         exit 2
  41     fi
  42     name=$2
  43
  44     # Shift over to start of pid list
  45     shift; shift
  46 fi
  47
  48 # Create a temporary file.  Use mktemp if available, but cope if it is not.
  49 tmpfile=`mktemp ${name}.XXXXXX 2>/dev/null` || {
  50   tmpfile=${name}.$$
  51   if test -e $tmpfile; then
  52     echo "Could not create temporary file $tmpfile"
  53     exit 1
  54   fi
  55   touch $tmpfile
  56 }
  57 trap "rm -f $tmpfile" EXIT
  58
  59 # Initialise return code.
  60 rc=0
  61
  62 # Loop through pids
  63 for pid in $*
  64 do
  65         # Write gdb script for pid $pid.
  66         cat >>$tmpfile <<EOF
  67 attach $pid
  68 gcore $name.$pid
  69 detach
  70 quit
  71 EOF
  72
  73         gdb -x $tmpfile -batch
  74
  75         if [ -r $name.$pid ] ; then
  76             rc=0
  77         else
  78             echo gcore: failed to create $name.$pid
  79             rc=1
  80             break
  81         fi
  82
  83
  84 done
  85
  86 exit $rc