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73 lines
2.1 KiB
C
73 lines
2.1 KiB
C
/* pthread_setspecific. Generic version.
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Copyright (C) 2002-2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <pthread.h>
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#include <pt-internal.h>
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int
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__pthread_setspecific (pthread_key_t key, const void *value)
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{
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struct __pthread *self = _pthread_self ();
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if (key < 0 || key >= __pthread_key_count)
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return EINVAL;
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if (self->thread_specifics == NULL)
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{
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if (key < PTHREAD_STATIC_KEYS)
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{
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self->static_thread_specifics[key] = (void *) value;
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return 0;
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}
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}
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if (key >= self->thread_specifics_size)
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{
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/* Amortize reallocation cost. */
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int newsize = 2 * key + 1;
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void **new;
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if (self->thread_specifics == NULL)
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{
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self->thread_specifics_size = PTHREAD_STATIC_KEYS;
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new = malloc (newsize * sizeof (new[0]));
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if (new != NULL)
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memcpy (new, self->static_thread_specifics,
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PTHREAD_STATIC_KEYS * sizeof (new[0]));
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}
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else
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{
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new = realloc (self->thread_specifics,
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newsize * sizeof (new[0]));
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}
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if (new == NULL)
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return ENOMEM;
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memset (&new[self->thread_specifics_size], 0,
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(newsize - self->thread_specifics_size) * sizeof (new[0]));
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self->thread_specifics = new;
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self->thread_specifics_size = newsize;
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}
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self->thread_specifics[key] = (void *) value;
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return 0;
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}
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weak_alias (__pthread_setspecific, pthread_setspecific);
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hidden_def (__pthread_setspecific)
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