mips: Ensure PC update with MTC0 single-stepping
[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-common.h"
14 #include "qemu/event_notifier.h"
15 #include "qemu/main-loop.h"
16
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
24 void event_notifier_cleanup(EventNotifier *e)
25 {
26 CloseHandle(e->event);
27 }
28
29 HANDLE event_notifier_get_handle(EventNotifier *e)
30 {
31 return e->event;
32 }
33
34 int 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
45 int event_notifier_set(EventNotifier *e)
46 {
47 SetEvent(e->event);
48 return 0;
49 }
50
51 int 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 }