54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
/*
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* Copyright (c) 2014 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* pthread/pthread_setspecific.c
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* Thread-specific data management.
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*/
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#include <assert.h>
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#include <errno.h>
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#include <pthread.h>
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#include <stdlib.h>
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int pthread_setspecific(pthread_key_t key, const void* value_const)
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{
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void* value = (void*) value_const;
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struct pthread* thread = pthread_self();
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if ( key < thread->keys_length )
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return thread->keys[key] = value, 0;
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pthread_mutex_lock(&__pthread_keys_lock);
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assert(key < __pthread_keys_length);
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assert(__pthread_keys[key].destructor);
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pthread_mutex_unlock(&__pthread_keys_lock);
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size_t old_length = thread->keys_length;
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size_t new_length = __pthread_keys_length;
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size_t new_size = new_length * sizeof(void*);
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void** new_keys = (void**) realloc(thread->keys, new_size);
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if ( !new_keys )
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return errno;
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thread->keys = new_keys;
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thread->keys_length = new_length;
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for ( size_t i = old_length; i < new_length; i++ )
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new_keys[i] = NULL;
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return thread->keys[key] = value, 0;
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}
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