xref: /openbmc/qemu/util/event_notifier-win32.c (revision 0f9668e0) 
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/event_notifier.h"
15 #include "qemu/main-loop.h"
16 
event_notifier_init(EventNotifier * e,int active)17 int event_notifier_init(EventNotifier *e, int active)
18 {
19     e->event = CreateEvent(NULL, TRUE, FALSE, NULL);
20     assert(e->event);
21     return 0;
22 }
23 
event_notifier_cleanup(EventNotifier * e)24 void event_notifier_cleanup(EventNotifier *e)
25 {
26     CloseHandle(e->event);
27     e->event = NULL;
28 }
29 
event_notifier_get_handle(EventNotifier * e)30 HANDLE event_notifier_get_handle(EventNotifier *e)
31 {
32     return e->event;
33 }
34 
event_notifier_set(EventNotifier * e)35 int event_notifier_set(EventNotifier *e)
36 {
37     SetEvent(e->event);
38     return 0;
39 }
40 
event_notifier_test_and_clear(EventNotifier * e)41 int event_notifier_test_and_clear(EventNotifier *e)
42 {
43     int ret = WaitForSingleObject(e->event, 0);
44     if (ret == WAIT_OBJECT_0) {
45         ResetEvent(e->event);
46         return true;
47     }
48     return false;
49 }
50