59 lines
1.9 KiB
C++
59 lines
1.9 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2014.
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This file is part of Sortix libpthread.
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Sortix libpthread is free software: you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by the
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Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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Sortix libpthread is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with Sortix libpthread. If not, see <http://www.gnu.org/licenses/>.
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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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extern "C" 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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