[PATCH] gcore command script

[Elena Zannoni]

This is a script that can be used to generate a core file for a given
process. It works by invoking gdb on the process, and using the gcore
command.

It was originally written by Michael Snyder, I think.

I picked the name gdb_gcore.sh. Seemed right at the moment. 

On a side note, should we have a 'scripts' subdirectory in gdb?

elena


--- /dev/null	Thu Apr 11 10:25:15 2002
+++ src/gdb/gdb_gcore.sh	Mon Mar 31 17:28:28 2003
@@ -0,0 +1,81 @@
+#!/bin/sh
+
+#   Copyright 2003  Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  
+
+# Please email any bugs, comments, and/or additions to this file to:
+# bug-gdb@prep.ai.mit.edu
+
+#
+# gdb_gcore.sh
+# Script to generate a core file of a running program.
+# It starts up gdb, attaches to the given PID and invokes the gcore command.
+#
+
+if [ "$#" -eq "0" ]
+then
+    echo "usage:  gcore [-o filename] pid"
+    exit 2
+fi
+
+# Need to check for -o option, but set default basename to "core".
+name=core
+
+if [ "$1" = "-o" ]
+then
+    if [ "$#" -lt "3" ]
+    then
+	# Not enough arguments.
+	echo "usage:  gcore [-o filename] pid"
+	exit 2
+    fi
+    name=$2
+
+    # Shift over to start of pid list
+    shift; shift
+fi
+
+# Initialise return code.
+rc=0
+
+# Loop through pids
+for pid in $*
+do
+	# Write gdb script for pid $pid.  
+
+	# Avoid need for temporary files by using funky "here
+	# document" feature of sh.
+
+	/usr/bin/gdb > /dev/null << EOF
+	attach $pid
+	gcore $name.$pid
+	detach
+	quit
+EOF
+
+	if [ -r $name.$pid ] ; then 
+	    rc=0
+	else
+	    echo gcore: failed to create $name.$pid
+	    rc=1
+	    break
+	fi
+
+
+done
+
+exit $rc
+