1 /* $NetBSD: pthread_specific.c,v 1.15 2007/12/07 20:36:52 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 1.15 2007/12/07 20:36:52 ad Exp $"); 41 42 /* Functions and structures dealing with thread-specific data */ 43 44 #include "pthread.h" 45 #include "pthread_int.h" 46 47 #include <sys/lwpctl.h> 48 49 __strong_alias(__libc_thr_setspecific,pthread_setspecific) 50 __strong_alias(__libc_thr_getspecific,pthread_getspecific) 51 __strong_alias(__libc_thr_curcpu,pthread_curcpu_np) 52 53 int 54 pthread_setspecific(pthread_key_t key, const void *value) 55 { 56 pthread_t self; 57 58 self = pthread__self(); 59 /* 60 * We can't win here on constness. Having been given a 61 * "const void *", we can only assign it to other const void *, 62 * and return it from functions that are const void *, without 63 * generating a warning. 64 */ 65 /*LINTED const cast*/ 66 self->pt_specific[key] = (void *) value; 67 self->pt_havespecific = 1; 68 69 return 0; 70 } 71 72 void * 73 pthread_getspecific(pthread_key_t key) 74 { 75 76 return pthread__self()->pt_specific[key]; 77 } 78 79 unsigned int 80 pthread_curcpu_np(void) 81 { 82 return pthread__self()->pt_lwpctl->lc_curcpu; 83 } 84