]>
git.ipfire.org Git - thirdparty/glibc.git/blob - nptl_db/td_thr_validate.c
1 /* Validate a thread handle.
2 Copyright (C) 1999-2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@redhat.com>, 1999.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <https://www.gnu.org/licenses/>. */
20 #include "thread_dbP.h"
24 __td_ta_stack_user (td_thragent_t
*ta
, psaddr_t
*plist
)
26 if (__td_ta_rtld_global (ta
))
27 return DB_GET_FIELD_ADDRESS (*plist
, ta
, ta
->ta_addr__rtld_global
,
28 rtld_global
, _dl_stack_user
, 0);
31 if (ta
->ta_addr__dl_stack_user
== 0
32 && td_mod_lookup (ta
->ph
, NULL
, SYM__dl_stack_user
,
33 &ta
->ta_addr__dl_stack_user
) != PS_OK
)
35 *plist
= ta
->ta_addr__dl_stack_user
;
41 __td_ta_stack_used (td_thragent_t
*ta
, psaddr_t
*plist
)
44 if (__td_ta_rtld_global (ta
))
45 return DB_GET_FIELD_ADDRESS (*plist
, ta
, ta
->ta_addr__rtld_global
,
46 rtld_global
, _dl_stack_used
, 0);
49 if (ta
->ta_addr__dl_stack_used
== 0
50 && td_mod_lookup (ta
->ph
, NULL
, SYM__dl_stack_used
,
51 &ta
->ta_addr__dl_stack_used
) != PS_OK
)
53 *plist
= ta
->ta_addr__dl_stack_used
;
59 check_thread_list (const td_thrhandle_t
*th
, psaddr_t head
, bool *uninit
)
64 err
= DB_GET_FIELD (next
, th
->th_ta_p
, head
, list_t
, next
, 0);
72 err
= DB_GET_FIELD_ADDRESS (ofs
, th
->th_ta_p
, 0, pthread
, list
, 0);
80 if (next
- (ofs
- (psaddr_t
) 0) == th
->th_unique
)
83 err
= DB_GET_FIELD (next
, th
->th_ta_p
, next
, list_t
, next
, 0);
91 td_thr_validate (const td_thrhandle_t
*th
)
96 LOG ("td_thr_validate");
98 /* First check the list with threads using user allocated stacks. */
100 err
= __td_ta_stack_user (th
->th_ta_p
, &list
);
102 err
= check_thread_list (th
, list
, &uninit
);
104 /* If our thread is not on this list search the list with stack
105 using implementation allocated stacks. */
108 err
= __td_ta_stack_used (th
->th_ta_p
, &list
);
110 err
= check_thread_list (th
, list
, &uninit
);
112 if (err
== TD_NOTHR
&& uninit
&& th
->th_unique
== 0)
113 /* __pthread_initialize_minimal has not run yet.
114 There is only the special case thread handle. */