1 | /* __pthread_destory_specific. Hurd version. |
2 | Copyright (C) 2002-2022 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
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. |
9 | |
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. |
14 | |
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/>. */ |
18 | |
19 | #include <pthread.h> |
20 | #include <stdlib.h> |
21 | |
22 | #include <pt-internal.h> |
23 | |
24 | void |
25 | __pthread_destroy_specific (struct __pthread *thread) |
26 | { |
27 | int i; |
28 | int seen_one; |
29 | |
30 | /* Check if there is any thread specific data. */ |
31 | if (thread->thread_specifics == NULL) |
32 | return; |
33 | |
34 | __pthread_key_lock_ready (); |
35 | |
36 | /* Iterate and call the destructors on any thread specific data. */ |
37 | for (;;) |
38 | { |
39 | seen_one = 0; |
40 | |
41 | __pthread_mutex_lock (&__pthread_key_lock); |
42 | |
43 | for (i = 0; i < __pthread_key_count && i < thread->thread_specifics_size; |
44 | i++) |
45 | { |
46 | void *value; |
47 | |
48 | if (__pthread_key_destructors[i] == PTHREAD_KEY_INVALID) |
49 | continue; |
50 | |
51 | value = thread->thread_specifics[i]; |
52 | if (value != NULL) |
53 | { |
54 | thread->thread_specifics[i] = 0; |
55 | |
56 | if (__pthread_key_destructors[i]) |
57 | { |
58 | seen_one = 1; |
59 | __pthread_key_destructors[i] (value); |
60 | } |
61 | } |
62 | } |
63 | |
64 | __pthread_mutex_unlock (&__pthread_key_lock); |
65 | |
66 | if (!seen_one) |
67 | break; |
68 | |
69 | /* This may take a very long time. Let those blocking on |
70 | pthread_key_create or pthread_key_delete make progress. */ |
71 | __sched_yield (); |
72 | } |
73 | |
74 | free (ptr: thread->thread_specifics); |
75 | thread->thread_specifics = 0; |
76 | thread->thread_specifics_size = 0; |
77 | } |
78 | |