blob: 6dbb530cfae21c1c7d0f6b9a1745049a80a6e028 [file] [log] [blame]
Paolo Bonzinifc97a652010-05-24 17:26:13 +02001/*
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-common.h"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010014#include "qemu/event_notifier.h"
15#include "qemu/main-loop.h"
Paolo Bonzinifc97a652010-05-24 17:26:13 +020016
17int event_notifier_init(EventNotifier *e, int active)
18{
Jan Kiszkae9bff102012-11-22 20:56:11 +010019 e->event = CreateEvent(NULL, TRUE, FALSE, NULL);
Paolo Bonzinifc97a652010-05-24 17:26:13 +020020 assert(e->event);
21 return 0;
22}
23
24void event_notifier_cleanup(EventNotifier *e)
25{
26 CloseHandle(e->event);
27}
28
29HANDLE event_notifier_get_handle(EventNotifier *e)
30{
31 return e->event;
32}
33
34int event_notifier_set_handler(EventNotifier *e,
35 EventNotifierHandler *handler)
36{
37 if (handler) {
38 return qemu_add_wait_object(e->event, (IOHandler *)handler, e);
39 } else {
40 qemu_del_wait_object(e->event, (IOHandler *)handler, e);
41 return 0;
42 }
43}
44
45int event_notifier_set(EventNotifier *e)
46{
47 SetEvent(e->event);
48 return 0;
49}
50
51int event_notifier_test_and_clear(EventNotifier *e)
52{
53 int ret = WaitForSingleObject(e->event, 0);
54 if (ret == WAIT_OBJECT_0) {
55 ResetEvent(e->event);
56 return true;
57 }
58 return false;
59}