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 # Initialise return code.
  49 rc=0
  50
  51 # Loop through pids
  52 for pid in $*
  53 do
  54         # `</dev/null' to avoid touching interactive terminal if it is
  55         # available but not accessible as GDB would get stopped on SIGTTIN.
  56         gdb </dev/null --nx --batch \
  57             -ex "set pagination off" -ex "set height 0" -ex "set width 0" \
  58             -ex "attach $pid" -ex "gcore $name.$pid" -ex detach -ex quit
  59
  60         if [ -r $name.$pid ] ; then
  61             rc=0
  62         else
  63             echo gcore: failed to create $name.$pid
  64             rc=1
  65             break
  66         fi
  67
  68
  69 done
  70
  71 exit $rc