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 30#include <sys/cdefs.h> 31__FBSDID("$FreeBSD: releng/11.0/lib/libthr/thread/thr_clean.c 297706 2016-04-08 11:15:26Z kib $"); 32 33#include "namespace.h" 34#include <signal.h> 35#include <errno.h> 36#include <stdlib.h> 37#include <pthread.h> 38#include "un-namespace.h" 39 40#include "thr_private.h" 41 42#undef pthread_cleanup_push 43#undef pthread_cleanup_pop 44 45/* old binary compatible interfaces */ 46__weak_reference(_pthread_cleanup_push, pthread_cleanup_push); 47__weak_reference(_pthread_cleanup_pop, pthread_cleanup_pop); 48 49void 50__pthread_cleanup_push_imp(void (*routine)(void *), void *arg, 51 struct _pthread_cleanup_info *info) 52{ 53 struct pthread *curthread = _get_curthread(); 54 struct pthread_cleanup *newbuf; 55 56 newbuf = (void *)info; 57 newbuf->routine = routine; 58 newbuf->routine_arg = arg; 59 newbuf->onheap = 0; 60 newbuf->prev = curthread->cleanup; 61 curthread->cleanup = newbuf; 62} 63 64void 65__pthread_cleanup_pop_imp(int execute) 66{ 67 struct pthread *curthread = _get_curthread(); 68 struct pthread_cleanup *old; 69 70 if ((old = curthread->cleanup) != NULL) { 71 curthread->cleanup = old->prev; 72 if (execute) 73 old->routine(old->routine_arg); 74 if (old->onheap) 75 free(old); 76 } 77} 78 79void 80_pthread_cleanup_push(void (*routine) (void *), void *arg) 81{ 82 struct pthread *curthread = _get_curthread(); 83 struct pthread_cleanup *newbuf; 84#ifdef _PTHREAD_FORCED_UNWIND 85 curthread->unwind_disabled = 1; 86#endif 87 if ((newbuf = (struct pthread_cleanup *) 88 malloc(sizeof(struct pthread_cleanup))) != NULL) { 89 newbuf->routine = routine; 90 newbuf->routine_arg = arg; 91 newbuf->onheap = 1; 92 newbuf->prev = curthread->cleanup; 93 curthread->cleanup = newbuf; 94 } 95} 96 97void 98_pthread_cleanup_pop(int execute) 99{ 100 __pthread_cleanup_pop_imp(execute); 101} 102