| # |
| # gdb helper commands and functions for Linux kernel debugging |
| # |
| # task & thread tools |
| # |
| # Copyright (c) Siemens AG, 2011-2013 |
| # |
| # Authors: |
| # Jan Kiszka <jan.kiszka@siemens.com> |
| # |
| # This work is licensed under the terms of the GNU GPL version 2. |
| # |
| |
| import gdb |
| |
| from linux import utils |
| |
| |
| task_type = utils.CachedType("struct task_struct") |
| |
| |
| class TaskList: |
| def __init__(self): |
| global task_type |
| self.task_ptr_type = task_type.get_type().pointer() |
| self.init_task = gdb.parse_and_eval("init_task") |
| self.curr_group = self.init_task.address |
| self.curr_task = None |
| |
| def __iter__(self): |
| return self |
| |
| def next(self): |
| t = self.curr_task |
| if not t or t == self.curr_group: |
| self.curr_group = \ |
| utils.container_of(self.curr_group['tasks']['next'], |
| self.task_ptr_type, "tasks") |
| if self.curr_group == self.init_task.address: |
| raise StopIteration |
| t = self.curr_task = self.curr_group |
| else: |
| self.curr_task = \ |
| utils.container_of(t['thread_group']['next'], |
| self.task_ptr_type, "thread_group") |
| return t |