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
  17 #ifdef _WIN32
  18 #include <windows.h>
  19 #endif
  20
  21 struct EventNotifier {
  22 #ifdef _WIN32
  23     HANDLE event;
  24 #else
  25     int rfd;
  26     int wfd;
  27 #endif
  28 };
  29
  30 typedef void EventNotifierHandler(EventNotifier *);
  31
  32 int event_notifier_init(EventNotifier *, int active);
  33 void event_notifier_cleanup(EventNotifier *);
  34 int event_notifier_set(EventNotifier *);
  35 int event_notifier_test_and_clear(EventNotifier *);
  36
  37 #ifdef CONFIG_POSIX
  38 void event_notifier_init_fd(EventNotifier *, int fd);
  39 int event_notifier_get_fd(const EventNotifier *);
  40 #else
  41 HANDLE event_notifier_get_handle(EventNotifier *);
  42 #endif
  43
  44 #endif