numa: add -numa node,memdev= option
[qemu.git] / include / qemu / notify.h
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 */
13
14 #ifndef QEMU_NOTIFY_H
15 #define QEMU_NOTIFY_H
16
17 #include "qemu/queue.h"
18
19 typedef struct Notifier Notifier;
20
21 struct Notifier
22 {
23 void (*notify)(Notifier *notifier, void *data);
24 QLIST_ENTRY(Notifier) node;
25 };
26
27 typedef struct NotifierList
28 {
29 QLIST_HEAD(, Notifier) notifiers;
30 } NotifierList;
31
32 #define NOTIFIER_LIST_INITIALIZER(head) \
33 { QLIST_HEAD_INITIALIZER((head).notifiers) }
34
35 void notifier_list_init(NotifierList *list);
36
37 void notifier_list_add(NotifierList *list, Notifier *notifier);
38
39 void notifier_remove(Notifier *notifier);
40
41 void notifier_list_notify(NotifierList *list, void *data);
42
43 /* Same as Notifier but allows .notify() to return errors */
44 typedef struct NotifierWithReturn NotifierWithReturn;
45
46 struct NotifierWithReturn {
47 /**
48 * Return 0 on success (next notifier will be invoked), otherwise
49 * notifier_with_return_list_notify() will stop and return the value.
50 */
51 int (*notify)(NotifierWithReturn *notifier, void *data);
52 QLIST_ENTRY(NotifierWithReturn) node;
53 };
54
55 typedef struct NotifierWithReturnList {
56 QLIST_HEAD(, NotifierWithReturn) notifiers;
57 } NotifierWithReturnList;
58
59 #define NOTIFIER_WITH_RETURN_LIST_INITIALIZER(head) \
60 { QLIST_HEAD_INITIALIZER((head).notifiers) }
61
62 void notifier_with_return_list_init(NotifierWithReturnList *list);
63
64 void notifier_with_return_list_add(NotifierWithReturnList *list,
65 NotifierWithReturn *notifier);
66
67 void notifier_with_return_remove(NotifierWithReturn *notifier);
68
69 int notifier_with_return_list_notify(NotifierWithReturnList *list,
70 void *data);
71
72 #endif