123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384 |
- /* Validate a thread handle.
- Copyright (C) 1999,2001,2002,2003,2004,2007 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
- #include "thread_dbP.h"
- #include <stdbool.h>
- static td_err_e
- check_thread_list (const td_thrhandle_t *th, psaddr_t head, bool *uninit)
- {
- td_err_e err;
- psaddr_t next, ofs;
- err = DB_GET_FIELD (next, th->th_ta_p, head, list_t, next, 0);
- if (err == TD_OK)
- {
- if (next == 0)
- {
- *uninit = true;
- return TD_NOTHR;
- }
- err = DB_GET_FIELD_ADDRESS (ofs, th->th_ta_p, 0, pthread, list, 0);
- }
- while (err == TD_OK)
- {
- if (next == head)
- return TD_NOTHR;
- if (next - (ofs - (psaddr_t) 0) == th->th_unique)
- return TD_OK;
- err = DB_GET_FIELD (next, th->th_ta_p, next, list_t, next, 0);
- }
- return err;
- }
- td_err_e
- td_thr_validate (const td_thrhandle_t *th)
- {
- td_err_e err;
- psaddr_t list = NULL;
- LOG ("td_thr_validate");
- /* First check the list with threads using user allocated stacks. */
- bool uninit = false;
- err = DB_GET_SYMBOL (list, th->th_ta_p, __stack_user);
- if (err == TD_OK)
- err = check_thread_list (th, list, &uninit);
- /* If our thread is not on this list search the list with stack
- using implementation allocated stacks. */
- if (err == TD_NOTHR)
- {
- err = DB_GET_SYMBOL (list, th->th_ta_p, stack_used);
- if (err == TD_OK)
- err = check_thread_list (th, list, &uninit);
- if (err == TD_NOTHR && uninit && th->th_unique == 0)
- /* __pthread_initialize_minimal has not run yet.
- There is only the special case thread handle. */
- err = TD_OK;
- }
- return err;
- }
|