xref: /freebsd/lib/libthr/thread/thr_clean.c (revision bb535300dd871731b2542594a917bc2892479ca0)
1bb535300SJeff Roberson /*
2bb535300SJeff Roberson  * Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>.
3bb535300SJeff Roberson  * All rights reserved.
4bb535300SJeff Roberson  *
5bb535300SJeff Roberson  * Redistribution and use in source and binary forms, with or without
6bb535300SJeff Roberson  * modification, are permitted provided that the following conditions
7bb535300SJeff Roberson  * are met:
8bb535300SJeff Roberson  * 1. Redistributions of source code must retain the above copyright
9bb535300SJeff Roberson  *    notice, this list of conditions and the following disclaimer.
10bb535300SJeff Roberson  * 2. Redistributions in binary form must reproduce the above copyright
11bb535300SJeff Roberson  *    notice, this list of conditions and the following disclaimer in the
12bb535300SJeff Roberson  *    documentation and/or other materials provided with the distribution.
13bb535300SJeff Roberson  * 3. All advertising materials mentioning features or use of this software
14bb535300SJeff Roberson  *    must display the following acknowledgement:
15bb535300SJeff Roberson  *	This product includes software developed by John Birrell.
16bb535300SJeff Roberson  * 4. Neither the name of the author nor the names of any co-contributors
17bb535300SJeff Roberson  *    may be used to endorse or promote products derived from this software
18bb535300SJeff Roberson  *    without specific prior written permission.
19bb535300SJeff Roberson  *
20bb535300SJeff Roberson  * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
21bb535300SJeff Roberson  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22bb535300SJeff Roberson  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23bb535300SJeff Roberson  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24bb535300SJeff Roberson  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25bb535300SJeff Roberson  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26bb535300SJeff Roberson  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27bb535300SJeff Roberson  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28bb535300SJeff Roberson  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29bb535300SJeff Roberson  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30bb535300SJeff Roberson  * SUCH DAMAGE.
31bb535300SJeff Roberson  *
32bb535300SJeff Roberson  * $FreeBSD$
33bb535300SJeff Roberson  */
34bb535300SJeff Roberson #include <signal.h>
35bb535300SJeff Roberson #include <errno.h>
36bb535300SJeff Roberson #include <stdlib.h>
37bb535300SJeff Roberson #include <pthread.h>
38bb535300SJeff Roberson #include "thr_private.h"
39bb535300SJeff Roberson 
40bb535300SJeff Roberson __weak_reference(_pthread_cleanup_push, pthread_cleanup_push);
41bb535300SJeff Roberson __weak_reference(_pthread_cleanup_pop, pthread_cleanup_pop);
42bb535300SJeff Roberson 
43bb535300SJeff Roberson void
44bb535300SJeff Roberson _pthread_cleanup_push(void (*routine) (void *), void *routine_arg)
45bb535300SJeff Roberson {
46bb535300SJeff Roberson 	struct pthread	*curthread = _get_curthread();
47bb535300SJeff Roberson 	struct pthread_cleanup *new;
48bb535300SJeff Roberson 
49bb535300SJeff Roberson 	if ((new = (struct pthread_cleanup *) malloc(sizeof(struct pthread_cleanup))) != NULL) {
50bb535300SJeff Roberson 		new->routine = routine;
51bb535300SJeff Roberson 		new->routine_arg = routine_arg;
52bb535300SJeff Roberson 		new->next = curthread->cleanup;
53bb535300SJeff Roberson 
54bb535300SJeff Roberson 		curthread->cleanup = new;
55bb535300SJeff Roberson 	}
56bb535300SJeff Roberson }
57bb535300SJeff Roberson 
58bb535300SJeff Roberson void
59bb535300SJeff Roberson _pthread_cleanup_pop(int execute)
60bb535300SJeff Roberson {
61bb535300SJeff Roberson 	struct pthread	*curthread = _get_curthread();
62bb535300SJeff Roberson 	struct pthread_cleanup *old;
63bb535300SJeff Roberson 
64bb535300SJeff Roberson 	if ((old = curthread->cleanup) != NULL) {
65bb535300SJeff Roberson 		curthread->cleanup = old->next;
66bb535300SJeff Roberson 		if (execute) {
67bb535300SJeff Roberson 			old->routine(old->routine_arg);
68bb535300SJeff Roberson 		}
69bb535300SJeff Roberson 		free(old);
70bb535300SJeff Roberson 	}
71bb535300SJeff Roberson }
72bb535300SJeff Roberson 
73