1 /* Iterate over a process's thread-specific data.
2 Copyright (C) 1999-2021 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/>. */
20 #include "thread_dbP.h"
24 td_ta_tsd_iter (const td_thragent_t
*ta_arg
, td_key_iter_f
*callback
,
27 td_thragent_t
*const ta
= (td_thragent_t
*) ta_arg
;
30 size_t keys_nb
, keys_elemsize
;
34 LOG ("td_ta_tsd_iter");
36 /* Test whether the TA parameter is ok. */
40 /* This makes sure we have the size information on hand. */
42 err
= _td_locate_field (ta
,
43 ta
->ta_var___pthread_keys
, SYM_DESC___pthread_keys
,
44 (psaddr_t
) 0 + 1, &addr
);
48 /* Now copy in the entire array of key descriptors. */
49 keys_elemsize
= (addr
- (psaddr_t
) 0) / 8;
50 keys_nb
= keys_elemsize
* DB_DESC_NELEM (ta
->ta_var___pthread_keys
);
51 keys
= __alloca (keys_nb
);
52 err
= DB_GET_SYMBOL (addr
, ta
, __pthread_keys
);
55 if (ps_pdread (ta
->ph
, addr
, keys
, keys_nb
) != PS_OK
)
58 /* Now get all descriptors, one after the other. */
59 for (idx
= 0; idx
< DB_DESC_NELEM (ta
->ta_var___pthread_keys
); ++idx
)
62 err
= DB_GET_FIELD_LOCAL (seq
, ta
, keys
, pthread_key_struct
, seq
, 0);
65 if (((uintptr_t) seq
) & 1)
67 err
= DB_GET_FIELD_LOCAL (destr
, ta
, keys
, pthread_key_struct
,
71 /* Return with an error if the callback returns a nonzero value. */
72 if (callback ((thread_key_t
) idx
, destr
, cbdata_p
) != 0)
75 /* Advance to the next element in the copied array. */
76 keys
+= keys_elemsize
;