| Jan Kiszka | 2b51482 | 2015-02-17 13:46:38 -0800 | [diff] [blame^] | 1 | # |
| 2 | # gdb helper commands and functions for Linux kernel debugging |
| 3 | # |
| 4 | # common utilities |
| 5 | # |
| 6 | # Copyright (c) Siemens AG, 2011-2013 |
| 7 | # |
| 8 | # Authors: |
| 9 | # Jan Kiszka <jan.kiszka@siemens.com> |
| 10 | # |
| 11 | # This work is licensed under the terms of the GNU GPL version 2. |
| 12 | # |
| 13 | |
| 14 | import gdb |
| 15 | |
| 16 | |
| 17 | class CachedType: |
| 18 | def __init__(self, name): |
| 19 | self._type = None |
| 20 | self._name = name |
| 21 | |
| 22 | def _new_objfile_handler(self, event): |
| 23 | self._type = None |
| 24 | gdb.events.new_objfile.disconnect(self._new_objfile_handler) |
| 25 | |
| 26 | def get_type(self): |
| 27 | if self._type is None: |
| 28 | self._type = gdb.lookup_type(self._name) |
| 29 | if self._type is None: |
| 30 | raise gdb.GdbError( |
| 31 | "cannot resolve type '{0}'".format(self._name)) |
| 32 | if hasattr(gdb, 'events') and hasattr(gdb.events, 'new_objfile'): |
| 33 | gdb.events.new_objfile.connect(self._new_objfile_handler) |
| 34 | return self._type |