glibc/nptl/pthread_setspecific.c
Ulrich Drepper 9c06eb66b5 [BZ #2908]
* stdio-common/printf_fphex.c (__printf_fphex): When rounding up
	'f', use '1' as leading digit not '\1'.
	* stdio-common/Makefile (tests): Add bug16.
	* stdio-common/bug16.c: New file.

	[BZ #2914]
	* sysdeps/unix/sysv/linux/gethostid.c: Don't define OLD_HOSTIDFILE
	and don't try to open it.  The patch introducing the macro
	contained a bug and used the same file name as the new file
	instead of using /var/adm/hostid.  Nobody complaint so I'm taking
	this out completely.

	[BZ #2926]
	* assert/assert.h: Move cast to void inside ?: to quiet gcc.
	Patch by Jerry James <Jerry.James@usu.edu>.
2006-08-03 09:36:43 +00:00

97 lines
2.9 KiB
C

/* Copyright (C) 2002, 2003, 2006 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 <stdlib.h>
#include "pthreadP.h"
int
__pthread_setspecific (key, value)
pthread_key_t key;
const void *value;
{
struct pthread *self;
unsigned int idx1st;
unsigned int idx2nd;
struct pthread_key_data *level2;
unsigned int seq;
self = THREAD_SELF;
/* Special case access to the first 2nd-level block. This is the
usual case. */
if (__builtin_expect (key < PTHREAD_KEY_2NDLEVEL_SIZE, 1))
{
/* Verify the key is sane. */
if (KEY_UNUSED ((seq = __pthread_keys[key].seq)))
/* Not valid. */
return EINVAL;
level2 = &self->specific_1stblock[key];
/* Remember that we stored at least one set of data. */
if (value != NULL)
THREAD_SETMEM (self, specific_used, true);
}
else
{
if (key >= PTHREAD_KEYS_MAX
|| KEY_UNUSED ((seq = __pthread_keys[key].seq)))
/* Not valid. */
return EINVAL;
idx1st = key / PTHREAD_KEY_2NDLEVEL_SIZE;
idx2nd = key % PTHREAD_KEY_2NDLEVEL_SIZE;
/* This is the second level array. Allocate it if necessary. */
level2 = THREAD_GETMEM_NC (self, specific, idx1st);
if (level2 == NULL)
{
if (value == NULL)
/* We don't have to do anything. The value would in any case
be NULL. We can save the memory allocation. */
return 0;
level2
= (struct pthread_key_data *) calloc (PTHREAD_KEY_2NDLEVEL_SIZE,
sizeof (*level2));
if (level2 == NULL)
return ENOMEM;
THREAD_SETMEM_NC (self, specific, idx1st, level2);
}
/* Pointer to the right array element. */
level2 = &level2[idx2nd];
/* Remember that we stored at least one set of data. */
THREAD_SETMEM (self, specific_used, true);
}
/* Store the data and the sequence number so that we can recognize
stale data. */
level2->seq = seq;
level2->data = (void *) value;
return 0;
}
strong_alias (__pthread_setspecific, pthread_setspecific)
strong_alias (__pthread_setspecific, __pthread_setspecific_internal)