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 #undef pthread_cleanup_push 42 #undef pthread_cleanup_pop 43 44 /* old binary compatible interfaces */ 45 __weak_reference(_pthread_cleanup_push, pthread_cleanup_push); 46 __weak_reference(_pthread_cleanup_pop, pthread_cleanup_pop); 47 48 void 49 __pthread_cleanup_push_imp(void (*routine)(void *), void *arg, 50 struct _pthread_cleanup_info *info) 51 { 52 struct pthread *curthread = _get_curthread(); 53 struct pthread_cleanup *newbuf; 54 55 newbuf = (void *)info; 56 newbuf->routine = routine; 57 newbuf->routine_arg = arg; 58 newbuf->onheap = 0; 59 newbuf->prev = curthread->cleanup; 60 curthread->cleanup = newbuf; 61 } 62 63 void 64 __pthread_cleanup_pop_imp(int execute) 65 { 66 struct pthread *curthread = _get_curthread(); 67 struct pthread_cleanup *old; 68 69 if ((old = curthread->cleanup) != NULL) { 70 curthread->cleanup = old->prev; 71 if (execute) 72 old->routine(old->routine_arg); 73 if (old->onheap) 74 free(old); 75 } 76 } 77 78 void 79 _pthread_cleanup_push(void (*routine) (void *), void *arg) 80 { 81 struct pthread *curthread = _get_curthread(); 82 struct pthread_cleanup *newbuf; 83 #ifdef _PTHREAD_FORCED_UNWIND 84 curthread->unwind_disabled = 1; 85 #endif 86 if ((newbuf = (struct pthread_cleanup *) 87 malloc(sizeof(struct _pthread_cleanup_info))) != NULL) { 88 newbuf->routine = routine; 89 newbuf->routine_arg = arg; 90 newbuf->onheap = 1; 91 newbuf->prev = curthread->cleanup; 92 curthread->cleanup = newbuf; 93 } 94 } 95 96 void 97 _pthread_cleanup_pop(int execute) 98 { 99 __pthread_cleanup_pop_imp(execute); 100 } 101