f87d72f5c5
Adding a cleanup callback function to the EventNotifier struct which allows users to execute event_notifier_cleanup in a different context. Signed-off-by: Gal Hammer <ghammer@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
53 lines
1 KiB
C
53 lines
1 KiB
C
/*
|
|
* 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);
|
|
e->cleanup = NULL;
|
|
return 0;
|
|
}
|
|
|
|
void event_notifier_cleanup(EventNotifier *e)
|
|
{
|
|
CloseHandle(e->event);
|
|
e->event = NULL;
|
|
e->cleanup = NULL;
|
|
}
|
|
|
|
HANDLE event_notifier_get_handle(EventNotifier *e)
|
|
{
|
|
return e->event;
|
|
}
|
|
|
|
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;
|
|
}
|