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69 lines
2.0 KiB
C
69 lines
2.0 KiB
C
/* Copyright (C) 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <errno.h>
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#include "pthreadP.h"
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/* Internal mutex for __pthread_keys table handling. */
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lll_lock_t __pthread_keys_lock = LLL_LOCK_INITIALIZER;
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/* For debugging purposes put the maximum number of keys in a variable. */
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const int __pthread_pthread_keys_max = PTHREAD_KEYS_MAX;
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const int __pthread_pthread_key_2ndlevel_size = PTHREAD_KEY_2NDLEVEL_SIZE;
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int
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__pthread_key_create (key, destr)
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pthread_key_t *key;
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void (*destr) (void *);
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{
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int result = EAGAIN;
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size_t cnt;
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lll_lock (__pthread_keys_lock);
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/* Find a slot in __pthread_kyes which is unused. */
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for (cnt = 0; cnt < PTHREAD_KEYS_MAX; ++cnt)
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if (KEY_UNUSED (__pthread_keys[cnt].seq)
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&& KEY_USABLE (__pthread_keys[cnt].seq))
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{
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/* We found an unused slot. */
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++__pthread_keys[cnt].seq;
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/* Remember the destructor. */
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__pthread_keys[cnt].destr = destr;
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/* Return the key to the caller. */
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*key = cnt;
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/* The call succeeded. */
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result = 0;
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/* We found a key and can stop now. */
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break;
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}
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lll_unlock (__pthread_keys_lock);
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return result;
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}
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strong_alias (__pthread_key_create, pthread_key_create)
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