pthread_specific.c revision 1.11 
1/*	$NetBSD: pthread_specific.c,v 1.11 2007/08/16 12:01:49 ad Exp $	*/
2
3/*-
4 * Copyright (c) 2001, 2007 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Nathan J. Williams.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *        This product includes software developed by the NetBSD
21 *        Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 *    contributors may be used to endorse or promote products derived
24 *    from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39#include <sys/cdefs.h>
40__RCSID("$NetBSD: pthread_specific.c,v 1.11 2007/08/16 12:01:49 ad Exp $");
41
42/* Functions and structures dealing with thread-specific data */
43
44#include "pthread.h"
45#include "pthread_int.h"
46
47__strong_alias(__libc_thr_setspecific,pthread_setspecific)
48__strong_alias(__libc_thr_getspecific,pthread_getspecific)
49
50int
51pthread_setspecific(pthread_key_t key, const void *value)
52{
53	pthread_t self;
54
55	self = pthread__self();
56	/*
57	 * We can't win here on constness. Having been given a
58	 * "const void *", we can only assign it to other const void *,
59	 * and return it from functions that are const void *, without
60	 * generating a warning.
61	 */
62	/*LINTED const cast*/
63	self->pt_specific[key] = (void *) value;
64	self->pt_havespecific = 1;
65
66	return 0;
67}
68
69void*
70pthread_getspecific(pthread_key_t key)
71{
72	pthread_t self;
73
74	self = pthread__self();
75	return (self->pt_specific[key]);
76}
77