Tools: Debugging Native and Java Code with WDB

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Tools for
Debugging
© 2001 Hewlett-Packard Company
gdb
Starting Java from gdb: Modify app
• Easiest method
•Example
• Change command line in a script such as:
exec "$prog” -Xmn500m -ms1024m -mx1024m
COM.volano.Mark -port 8000 -count 5000 -rooms 5
•To:
export GDB_JAVA_UNWINDLIB=/tmp/libjunwind.sl
export DBG_ARGS=“-Xmn500m -ms1024m -mx1024m
COM.volano.Mark -port 8000 -count 5000 -rooms 5”
export DEBUG_PROG=/opt/langtools/bin/gdb
exec “$prog”
• Start scripts as normal – gdb will start:
(gdb) r $DBG_ARGS