mips: Ensure PC update with MTC0 single-stepping
[qemu.git] / util / notify.c
1 /*
2 * Notifier lists
3 *
4 * Copyright IBM, Corp. 2010
5 *
6 * Authors:
7 * Anthony Liguori <aliguori@us.ibm.com>
8 *
9 * This work is licensed under the terms of the GNU GPL, version 2. See
10 * the COPYING file in the top-level directory.
11 *
12 * Contributions after 2012-01-13 are licensed under the terms of the
13 * GNU GPL, version 2 or (at your option) any later version.
14 */
15
16 #include "qemu-common.h"
17 #include "qemu/notify.h"
18
19 void notifier_list_init(NotifierList *list)
20 {
21 QLIST_INIT(&list->notifiers);
22 }
23
24 void notifier_list_add(NotifierList *list, Notifier *notifier)
25 {
26 QLIST_INSERT_HEAD(&list->notifiers, notifier, node);
27 }
28
29 void notifier_remove(Notifier *notifier)
30 {
31 QLIST_REMOVE(notifier, node);
32 }
33
34 void notifier_list_notify(NotifierList *list, void *data)
35 {
36 Notifier *notifier, *next;
37
38 QLIST_FOREACH_SAFE(notifier, &list->notifiers, node, next) {
39 notifier->notify(notifier, data);
40 }
41 }
42
43 void notifier_with_return_list_init(NotifierWithReturnList *list)
44 {
45 QLIST_INIT(&list->notifiers);
46 }
47
48 void notifier_with_return_list_add(NotifierWithReturnList *list,
49 NotifierWithReturn *notifier)
50 {
51 QLIST_INSERT_HEAD(&list->notifiers, notifier, node);
52 }
53
54 void notifier_with_return_remove(NotifierWithReturn *notifier)
55 {
56 QLIST_REMOVE(notifier, node);
57 }
58
59 int notifier_with_return_list_notify(NotifierWithReturnList *list, void *data)
60 {
61 NotifierWithReturn *notifier, *next;
62 int ret = 0;
63
64 QLIST_FOREACH_SAFE(notifier, &list->notifiers, node, next) {
65 ret = notifier->notify(notifier, data);
66 if (ret != 0) {
67 break;
68 }
69 }
70 return ret;
71 }