mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-16 18:10:11 +00:00
64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
/* Copyright (C) 2002, 2003 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_keys table handling. */
|
|
lll_lock_t __pthread_keys_lock = LLL_LOCK_INITIALIZER;
|
|
|
|
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)
|
|
strong_alias (__pthread_key_create, __pthread_key_create_internal)
|