mirror of
https://github.com/qemu/qemu.git
synced 2024-11-25 03:43:37 +08:00
d1e70c5e6d
Notifiers are data-less callbacks and a notifier list is a list of registered notifiers that all are interested in a particular event. We'll use this in a few patches to implement mouse change notification. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> --- v1 -> v2 - Do not do memory allocations by placing list nodes in notifier
44 lines
857 B
C
44 lines
857 B
C
/*
|
|
* Notifier lists
|
|
*
|
|
* Copyright IBM, Corp. 2010
|
|
*
|
|
* Authors:
|
|
* Anthony Liguori <aliguori@us.ibm.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2. See
|
|
* the COPYING file in the top-level directory.
|
|
*
|
|
*/
|
|
|
|
#ifndef QEMU_NOTIFY_H
|
|
#define QEMU_NOTIFY_H
|
|
|
|
#include "qemu-queue.h"
|
|
|
|
typedef struct Notifier Notifier;
|
|
|
|
struct Notifier
|
|
{
|
|
void (*notify)(Notifier *notifier);
|
|
QTAILQ_ENTRY(Notifier) node;
|
|
};
|
|
|
|
typedef struct NotifierList
|
|
{
|
|
QTAILQ_HEAD(, Notifier) notifiers;
|
|
} NotifierList;
|
|
|
|
#define NOTIFIER_LIST_INITIALIZER(head) \
|
|
{ QTAILQ_HEAD_INITIALIZER((head).notifiers) }
|
|
|
|
void notifier_list_init(NotifierList *list);
|
|
|
|
void notifier_list_add(NotifierList *list, Notifier *notifier);
|
|
|
|
void notifier_list_remove(NotifierList *list, Notifier *notifier);
|
|
|
|
void notifier_list_notify(NotifierList *list);
|
|
|
|
#endif
|