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/*
* event notifier support
*
* Copyright Red Hat, Inc. 2010
*
* Authors:
* Michael S. Tsirkin <mst@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "qemu-common.h"
#include "qemu/event_notifier.h"
#include "qemu/main-loop.h"
int event_notifier_init(EventNotifier *e, int active)
{
e->event = CreateEvent(NULL, TRUE, FALSE, NULL);
assert(e->event);
return 0;
}
void event_notifier_cleanup(EventNotifier *e)
{
CloseHandle(e->event);
}
HANDLE event_notifier_get_handle(EventNotifier *e)
{
return e->event;
}
int event_notifier_set_handler(EventNotifier *e,
bool is_external,
EventNotifierHandler *handler)
{
if (handler) {
return qemu_add_wait_object(e->event, (IOHandler *)handler, e);
} else {
qemu_del_wait_object(e->event, (IOHandler *)handler, e);
return 0;
}
}
int event_notifier_set(EventNotifier *e)
{
SetEvent(e->event);
return 0;
}
int event_notifier_test_and_clear(EventNotifier *e)
{
int ret = WaitForSingleObject(e->event, 0);
if (ret == WAIT_OBJECT_0) {
ResetEvent(e->event);
return true;
}
return false;
}
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