1 /* 2 * Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by John Birrell. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL 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/libpthread/thread/thr_clean.c,v 1.9 2004/12/18 18:07:37 deischen Exp $ 33 * $DragonFly: src/lib/libthread_xu/thread/thr_clean.c,v 1.2 2005/03/29 19:26:20 joerg Exp $ 34 */ 35 36 #include <machine/tls.h> 37 38 #include <signal.h> 39 #include <errno.h> 40 #include <stdlib.h> 41 #include <pthread.h> 42 #include "thr_private.h" 43 44 __weak_reference(_pthread_cleanup_push, pthread_cleanup_push); 45 __weak_reference(_pthread_cleanup_pop, pthread_cleanup_pop); 46 47 void 48 _pthread_cleanup_push(void (*routine) (void *), void *routine_arg) 49 { 50 struct pthread *curthread = tls_get_curthread(); 51 struct pthread_cleanup *new; 52 53 if ((new = (struct pthread_cleanup *) 54 malloc(sizeof(struct pthread_cleanup))) != NULL) { 55 new->routine = routine; 56 new->routine_arg = routine_arg; 57 new->onstack = 0; 58 new->next = curthread->cleanup; 59 60 curthread->cleanup = new; 61 } 62 } 63 64 void 65 _pthread_cleanup_pop(int execute) 66 { 67 struct pthread *curthread = tls_get_curthread(); 68 struct pthread_cleanup *old; 69 70 if ((old = curthread->cleanup) != NULL) { 71 curthread->cleanup = old->next; 72 if (execute) { 73 old->routine(old->routine_arg); 74 } 75 if (old->onstack == 0) 76 free(old); 77 } 78 } 79