gdb/gdb_gcore.sh

   1 #!/bin/sh
   2
   3 #   Copyright (C) 2003, 2005, 2007 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 2 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, write to the Free Software
  17 # Foundation, Inc., 51 Franklin Street, Fifth Floor,
  18 # Boston, MA 02110-1301, USA.
  19
  20 #
  21 # gcore.sh
  22 # Script to generate a core file of a running program.
  23 # It starts up gdb, attaches to the given PID and invokes the gcore command.
  24 #
  25
  26 if [ "$#" -eq "0" ]
  27 then
  28     echo "usage:  gcore [-o filename] pid"
  29     exit 2
  30 fi
  31
  32 # Need to check for -o option, but set default basename to "core".
  33 name=core
  34
  35 if [ "$1" = "-o" ]
  36 then
  37     if [ "$#" -lt "3" ]
  38     then
  39         # Not enough arguments.
  40         echo "usage:  gcore [-o filename] pid"
  41         exit 2
  42     fi
  43     name=$2
  44
  45     # Shift over to start of pid list
  46     shift; shift
  47 fi
  48
  49 # Create a temporary file.  Use mktemp if available, but cope if it is not.
  50 tmpfile=`mktemp ${name}.XXXXXX 2>/dev/null` || {
  51   tmpfile=${name}.$$
  52   if test -e $tmpfile; then
  53     echo "Could not create temporary file $tmpfile"
  54     exit 1
  55   fi
  56   touch $tmpfile
  57 }
  58 trap "rm -f $tmpfile" EXIT
  59
  60 # Initialise return code.
  61 rc=0
  62
  63 # Loop through pids
  64 for pid in $*
  65 do
  66         # Write gdb script for pid $pid.
  67         cat >>$tmpfile <<EOF
  68 attach $pid
  69 gcore $name.$pid
  70 detach
  71 quit
  72 EOF
  73
  74         gdb -x $tmpfile -batch
  75
  76         if [ -r $name.$pid ] ; then
  77             rc=0
  78         else
  79             echo gcore: failed to create $name.$pid
  80             rc=1
  81             break
  82         fi
  83
  84
  85 done
  86
  87 exit $rc