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33574c17 | 1 | /* __pthread_destory_specific. Hurd version. |
04277e02 | 2 | Copyright (C) 2002-2019 Free Software Foundation, Inc. |
33574c17 ST |
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 | |
ad2b41bf ST |
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. | |
33574c17 ST |
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 | |
ad2b41bf | 13 | Lesser General Public License for more details. |
33574c17 | 14 | |
ad2b41bf ST |
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 | <http://www.gnu.org/licenses/>. */ | |
33574c17 ST |
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 (thread->thread_specifics); | |
75 | thread->thread_specifics = 0; | |
76 | thread->thread_specifics_size = 0; | |
77 | } |