include/qemu/event_notifier.h

   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 #ifndef QEMU_EVENT_NOTIFIER_H
  14 #define QEMU_EVENT_NOTIFIER_H
  15
  16 #include "qemu-common.h"
  17
  18 #ifdef _WIN32
  19 #include <windows.h>
  20 #endif
  21
  22 struct EventNotifier {
  23 #ifdef _WIN32
  24     HANDLE event;
  25 #else
  26     int rfd;
  27     int wfd;
  28 #endif
  29 };
  30
  31 typedef void EventNotifierHandler(EventNotifier *);
  32
  33 int event_notifier_init(EventNotifier *, int active);
  34 void event_notifier_cleanup(EventNotifier *);
  35 int event_notifier_set(EventNotifier *);
  36 int event_notifier_test_and_clear(EventNotifier *);
  37 int event_notifier_set_handler(EventNotifier *,
  38                                bool is_external,
  39                                EventNotifierHandler *);
  40
  41 #ifdef CONFIG_POSIX
  42 void event_notifier_init_fd(EventNotifier *, int fd);
  43 int event_notifier_get_fd(const EventNotifier *);
  44 #else
  45 HANDLE event_notifier_get_handle(EventNotifier *);
  46 #endif
  47
  48 #endif