1 /* Validate a thread handle.
2 Copyright (C) 1999-2023 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
19 #include "thread_dbP.h"
23 __td_ta_stack_user (td_thragent_t *ta, psaddr_t *plist)
25 if (__td_ta_rtld_global (ta))
26 return DB_GET_FIELD_ADDRESS (*plist, ta, ta->ta_addr__rtld_global,
27 rtld_global, _dl_stack_user, 0);
30 if (ta->ta_addr__dl_stack_user == 0
31 && td_mod_lookup (ta->ph, NULL, SYM__dl_stack_user,
32 &ta->ta_addr__dl_stack_user) != PS_OK)
34 *plist = ta->ta_addr__dl_stack_user;
40 __td_ta_stack_used (td_thragent_t *ta, psaddr_t *plist)
43 if (__td_ta_rtld_global (ta))
44 return DB_GET_FIELD_ADDRESS (*plist, ta, ta->ta_addr__rtld_global,
45 rtld_global, _dl_stack_used, 0);
48 if (ta->ta_addr__dl_stack_used == 0
49 && td_mod_lookup (ta->ph, NULL, SYM__dl_stack_used,
50 &ta->ta_addr__dl_stack_used) != PS_OK)
52 *plist = ta->ta_addr__dl_stack_used;
58 check_thread_list (const td_thrhandle_t *th, psaddr_t head, bool *uninit)
63 err = DB_GET_FIELD (next, th->th_ta_p, head, list_t, next, 0);
71 err = DB_GET_FIELD_ADDRESS (ofs, th->th_ta_p, 0, pthread, list, 0);
79 if (next - (ofs - (psaddr_t) 0) == th->th_unique)
82 err = DB_GET_FIELD (next, th->th_ta_p, next, list_t, next, 0);
90 td_thr_validate (const td_thrhandle_t *th)
95 LOG ("td_thr_validate");
97 /* First check the list with threads using user allocated stacks. */
99 err = __td_ta_stack_user (th->th_ta_p, &list);
101 err = check_thread_list (th, list, &uninit);
103 /* If our thread is not on this list search the list with stack
104 using implementation allocated stacks. */
107 err = __td_ta_stack_used (th->th_ta_p, &list);
109 err = check_thread_list (th, list, &uninit);
111 if (err == TD_NOTHR && uninit && th->th_unique == 0)
112 /* __pthread_initialize_minimal has not run yet.
113 There is only the special case thread handle. */