1 /*- 2 * Copyright (c) 2003 Networks Associates Technology, Inc. 3 * All rights reserved. 4 * 5 * This software was developed for the FreeBSD Project by 6 * Jacques A. Vidrine, Safeport Network Services, and Network 7 * Associates Laboratories, the Security Research Division of Network 8 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 9 * ("CBOSS"), as part of the DARPA CHATS research program. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $FreeBSD: src/lib/libc/include/nss_tls.h,v 1.3 2004/03/30 15:56:15 nectar Exp $ 33 * 34 * Macros which generate thread local storage handling code in NSS modules. 35 */ 36 #ifndef _NSS_TLS_H_ 37 #define _NSS_TLS_H_ 38 39 #define NSS_TLS_HANDLING(name) \ 40 static pthread_key_t name##_state_key; \ 41 static void name##_keyinit(void); \ 42 static int name##_getstate(struct name##_state **); \ 43 \ 44 static void \ 45 name##_keyinit(void) \ 46 { \ 47 _pthread_key_create(&name##_state_key, name##_endstate); \ 48 } \ 49 \ 50 static int \ 51 name##_getstate(struct name##_state **p) \ 52 { \ 53 static struct name##_state st; \ 54 static pthread_once_t keyinit = PTHREAD_ONCE_INIT; \ 55 int rv; \ 56 \ 57 if (!__isthreaded || _pthread_main_np() != 0) { \ 58 *p = &st; \ 59 return (0); \ 60 } \ 61 rv = _pthread_once(&keyinit, name##_keyinit); \ 62 if (rv != 0) \ 63 return (rv); \ 64 *p = _pthread_getspecific(name##_state_key); \ 65 if (*p != NULL) \ 66 return (0); \ 67 *p = calloc(1, sizeof(**p)); \ 68 if (*p == NULL) \ 69 return (ENOMEM); \ 70 rv = _pthread_setspecific(name##_state_key, *p); \ 71 if (rv != 0) { \ 72 free(*p); \ 73 *p = NULL; \ 74 } \ 75 return (rv); \ 76 } \ 77 /* allow the macro invocation to end with a semicolon */ \ 78 struct _clashproof_bmVjdGFy 79 80 #endif /* _NSS_TLS_H_ */ 81