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/* Copyright (C) 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include "pthreadP.h"
/* Internal mutex for __pthread_kyes table handling. */
lll_lock_t __pthread_keys_lock = LLL_LOCK_INITIALIZER;
/* For debugging purposes put the maximum number of keys in a variable. */
const int __linuxthreads_pthread_keys_max = PTHREAD_KEYS_MAX;
const int __linuxthreads_pthread_key_2ndlevel_size = PTHREAD_KEY_2NDLEVEL_SIZE;
int
__pthread_key_create (key, destr)
pthread_key_t *key;
void (*destr) (void *);
{
int result = EAGAIN;
size_t cnt;
lll_lock (__pthread_keys_lock);
/* Find a slot in __pthread_kyes which is unused. */
for (cnt = 0; cnt < PTHREAD_KEYS_MAX; ++cnt)
if (KEY_UNUSED (__pthread_keys[cnt].seq)
&& KEY_USABLE (__pthread_keys[cnt].seq))
{
/* We found an unused slot. */
++__pthread_keys[cnt].seq;
/* Remember the destructor. */
__pthread_keys[cnt].destr = destr;
/* Return the key to the caller. */
*key = cnt;
/* The call succeeded. */
result = 0;
/* We found a key and can stop now. */
break;
}
lll_unlock (__pthread_keys_lock);
return result;
}
strong_alias (__pthread_key_create, pthread_key_create)
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