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. Neither the name of the author nor the names of any co-contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32 #include "namespace.h" 33 #include <signal.h> 34 #include <errno.h> 35 #include <stdlib.h> 36 #include <pthread.h> 37 #include "un-namespace.h" 38 39 #include "thr_private.h" 40 41 __weak_reference(_pthread_cleanup_push, pthread_cleanup_push); 42 __weak_reference(_pthread_cleanup_pop, pthread_cleanup_pop); 43 44 void 45 _pthread_cleanup_push(void (*routine) (void *), void *routine_arg) 46 { 47 struct pthread *curthread = _get_curthread(); 48 struct pthread_cleanup *new; 49 50 if ((new = (struct pthread_cleanup *) 51 malloc(sizeof(struct pthread_cleanup))) != NULL) { 52 new->routine = routine; 53 new->routine_arg = routine_arg; 54 new->onstack = 0; 55 new->next = curthread->cleanup; 56 57 curthread->cleanup = new; 58 } 59 } 60 61 void 62 _pthread_cleanup_pop(int execute) 63 { 64 struct pthread *curthread = _get_curthread(); 65 struct pthread_cleanup *old; 66 67 if ((old = curthread->cleanup) != NULL) { 68 curthread->cleanup = old->next; 69 if (execute) { 70 old->routine(old->routine_arg); 71 } 72 if (old->onstack == 0) 73 free(old); 74 } 75 } 76