Type lookups are very slow in gdb-python which is often noticeable when iterating over a number of objects. Introduce the helper class CachedType that keeps a reference to a gdb.Type object but also refreshes it after an object file has been loaded.
Signed-off-by: Jan Kiszka <[email protected]> --- scripts/gdb/linux/utils.py | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 scripts/gdb/linux/utils.py diff --git a/scripts/gdb/linux/utils.py b/scripts/gdb/linux/utils.py new file mode 100644 index 0000000..f883611 --- /dev/null +++ b/scripts/gdb/linux/utils.py @@ -0,0 +1,34 @@ +# +# gdb helper commands and functions for Linux kernel debugging +# +# common utilities +# +# Copyright (c) Siemens AG, 2011-2013 +# +# Authors: +# Jan Kiszka <[email protected]> +# +# This work is licensed under the terms of the GNU GPL version 2. +# + +import gdb + + +class CachedType: + def __init__(self, name): + self._type = None + self._name = name + + def _new_objfile_handler(self, event): + self._type = None + gdb.events.new_objfile.disconnect(self._new_objfile_handler) + + def get_type(self): + if self._type is None: + self._type = gdb.lookup_type(self._name) + if self._type is None: + raise gdb.GdbError( + "cannot resolve type '{0}'".format(self._name)) + if hasattr(gdb, 'events') and hasattr(gdb.events, 'new_objfile'): + gdb.events.new_objfile.connect(self._new_objfile_handler) + return self._type -- 1.8.1.1.298.ge7eed54 ------------------------------------------------------------------------------ October Webinars: Code for Performance Free Intel webinars can help you accelerate application performance. Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from the latest Intel processors and coprocessors. See abstracts and register > http://pubads.g.doubleclick.net/gampad/clk?id=60135991&iu=/4140/ostg.clktrk _______________________________________________ Kgdb-bugreport mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/kgdb-bugreport
