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: stable/9/lib/libthr/thread/thr_clean.c 282225 2015-04-29 15:33:55Z pfg $
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
__pthread_cleanup_push_imp(void (* routine)(void *),void * arg,struct _pthread_cleanup_info * info)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
__pthread_cleanup_pop_imp(int execute)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
_pthread_cleanup_push(void (* routine)(void *),void * arg)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))) != 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
_pthread_cleanup_pop(int execute)97 _pthread_cleanup_pop(int execute)
98 {
99 __pthread_cleanup_pop_imp(execute);
100 }
101