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git.ipfire.org Git - thirdparty/glibc.git/blob - sysdeps/htl/pt-setspecific.c
1 /* pthread_setspecific. Generic version.
2 Copyright (C) 2002-2023 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/>. */
21 #include <pt-internal.h>
24 __pthread_setspecific (pthread_key_t key
, const void *value
)
26 struct __pthread
*self
= _pthread_self ();
28 if (key
< 0 || key
>= __pthread_key_count
)
31 if (key
>= self
->thread_specifics_size
)
33 /* Amortize reallocation cost. */
34 int newsize
= 2 * key
+ 1;
35 void **new = realloc (self
->thread_specifics
,
36 newsize
* sizeof (new[0]));
40 memset (&new[self
->thread_specifics_size
], 0,
41 (newsize
- self
->thread_specifics_size
) * sizeof (new[0]));
42 self
->thread_specifics
= new;
43 self
->thread_specifics_size
= newsize
;
46 self
->thread_specifics
[key
] = (void *) value
;
49 weak_alias (__pthread_setspecific
, pthread_setspecific
);
50 hidden_def (__pthread_setspecific
)