memory: add support getting and using a dirty bitmap copy.
[qemu.git] / util / event_notifier-win32.c
1 /*
2 * event notifier support
3 *
4 * Copyright Red Hat, Inc. 2010
5 *
6 * Authors:
7 * Michael S. Tsirkin <mst@redhat.com>
8 *
9 * This work is licensed under the terms of the GNU GPL, version 2 or later.
10 * See the COPYING file in the top-level directory.
11 */
12
13 #include "qemu/osdep.h"
14 #include "qemu-common.h"
15 #include "qemu/event_notifier.h"
16 #include "qemu/main-loop.h"
17
18 int event_notifier_init(EventNotifier *e, int active)
19 {
20 e->event = CreateEvent(NULL, TRUE, FALSE, NULL);
21 assert(e->event);
22 return 0;
23 }
24
25 void event_notifier_cleanup(EventNotifier *e)
26 {
27 CloseHandle(e->event);
28 e->event = NULL;
29 }
30
31 HANDLE event_notifier_get_handle(EventNotifier *e)
32 {
33 return e->event;
34 }
35
36 int event_notifier_set(EventNotifier *e)
37 {
38 SetEvent(e->event);
39 return 0;
40 }
41
42 int event_notifier_test_and_clear(EventNotifier *e)
43 {
44 int ret = WaitForSingleObject(e->event, 0);
45 if (ret == WAIT_OBJECT_0) {
46 ResetEvent(e->event);
47 return true;
48 }
49 return false;
50 }