Getting call stack information from a core file

You can use the sample gt script shell provided here to get the call stack for each running thread from a core file.

The input parameters are the path/name of the executable file (default ./dsmserv) and the path/name of the core file (default ./dsmcore). The output file is dsm_gdb.info.

Restriction: Files named dsm_gdb.cmd and dsm_gdb.info are overwritten when you run this script.

#!/bin/ksh
#
# If you see the following error:
# ./dsm_gdb.cmd:9: Error in source command file:
# No symbol table is loaded. Use the "file" command.
# then comment out the line that prints buildStringP
#
# if you see other errors, you're on your own ...
exe=${1:-"./dsmserv"} # get parm 1 (executable file path/name), set default
core=${2:-"./dsmcore"} # get parm 2 (core file path/name), set default
echo " "
# look for the executable file ... quit if not found
if [[ -f $exe ]]; then
echo "using executable file:" $exe
else
echo "didn't find executable file ("$exe") ... exiting"
exit
fi
# look for the core file, if not found, look for ./core ... quit if not found
if [[ -f $core ]]; then
echo "using core file:" $core
else
if [[ -f ./core ]]; then
echo "didn't find core file ("$core") but found ./core ... renaming to" $core
mv ./core $core
echo "using core file:" $core
else
echo "didn't find core file ("$core") ... exiting"
exit
fi
fi
echo " "
# make gdb command file to get thread info
nl="\0134\0156" # octal codes for \n (so echo won't think it's \n)
echo "# dsm gdb command file" >|dsm_gdb.cmd
echo "define doit" >>dsm_gdb.cmd
echo "info registers" >>dsm_gdb.cmd # show register values
echo "echo" $nl >>dsm_gdb.cmd
echo "where" >>dsm_gdb.cmd # show function traceback
echo "echo" $nl"====================================="$nl >>dsm_gdb.cmd
echo "end" >>dsm_gdb.cmd
echo "echo" $nl"====================================="$nl$nl >>dsm_gdb.cmd
echo "x/s buildStringP" >>dsm_gdb.cmd
echo "echo" $nl"====================================="$nl$nl >>dsm_gdb.cmd
echo "info threads" >>dsm_gdb.cmd # show thread info
echo "echo" $nl"====================================="$nl >>dsm_gdb.cmd
echo "thread apply all doit" >>dsm_gdb.cmd
echo "quit" >>dsm_gdb.cmd
echo "invoking gdb to get thread info (watch for errors) ..."
echo "if you see:"
echo ". warning: The shared libraries were not privately mapped; setting a"
echo ". breakpoint in a shared library will not work until you rerun the program"
echo "that's ok."
echo "if you see:"
echo ". ./dsm_gdb.cmd:x: Error in source command file:"
echo "then type 'quit', edit this script, and read the comments at the top"
gdb -se $exe -c $core -x ./dsm_gdb.cmd >|dsm_gdb.info
rm dsm_gdb.cmd # done with this now
exit