1/* pthread_key_delete. 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
21#include <pt-internal.h>
22
23int
24__pthread_key_delete (pthread_key_t key)
25{
26 error_t err = 0;
27
28 __pthread_key_lock_ready ();
29
30 __pthread_mutex_lock (&__pthread_key_lock);
31
32 if (key < 0 || key >= __pthread_key_count
33 || __pthread_key_destructors[key] == PTHREAD_KEY_INVALID)
34 err = EINVAL;
35 else
36 {
37 int i;
38
39 __pthread_key_destructors[key] = PTHREAD_KEY_INVALID;
40 __pthread_key_invalid_count++;
41
42 __libc_rwlock_rdlock (GL (dl_pthread_threads_lock));
43 for (i = 0; i < GL (dl_pthread_num_threads); ++i)
44 {
45 struct __pthread *t;
46
47 t = GL (dl_pthread_threads)[i];
48
49 if (t == NULL)
50 continue;
51
52 /* Just remove the key, no need to care whether it was
53 already there. */
54 if (key < t->thread_specifics_size)
55 t->thread_specifics[key] = 0;
56 }
57 __libc_rwlock_unlock (GL (dl_pthread_threads_lock));
58 }
59
60 __pthread_mutex_unlock (&__pthread_key_lock);
61
62 return err;
63}
64weak_alias (__pthread_key_delete, pthread_key_delete)
65

source code of glibc/sysdeps/htl/pt-key-delete.c