LXR qemu/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/osdep.h"
  14#include "qemu/event_notifier.h"
  15#include "qemu/main-loop.h"
  16
  17int 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
  24void event_notifier_cleanup(EventNotifier *e)
  25{
  26    CloseHandle(e->event);
  27    e->event = NULL;
  28}
  29
  30HANDLE event_notifier_get_handle(EventNotifier *e)
  31{
  32    return e->event;
  33}
  34
  35int event_notifier_set(EventNotifier *e)
  36{
  37    SetEvent(e->event);
  38    return 0;
  39}
  40
  41int 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