LXR qemu/util/notify.c

   1/*
   2 * Notifier lists
   3 *
   4 * Copyright IBM, Corp. 2010
   5 *
   6 * Authors:
   7 *  Anthony Liguori   <aliguori@us.ibm.com>
   8 *
   9 * This work is licensed under the terms of the GNU GPL, version 2.  See
  10 * the COPYING file in the top-level directory.
  11 *
  12 * Contributions after 2012-01-13 are licensed under the terms of the
  13 * GNU GPL, version 2 or (at your option) any later version.
  14 */
  15
  16#include "qemu/osdep.h"
  17#include "qemu/notify.h"
  18
  19void notifier_list_init(NotifierList *list)
  20{
  21    QLIST_INIT(&list->notifiers);
  22}
  23
  24void notifier_list_add(NotifierList *list, Notifier *notifier)
  25{
  26    QLIST_INSERT_HEAD(&list->notifiers, notifier, node);
  27}
  28
  29void notifier_remove(Notifier *notifier)
  30{
  31    QLIST_REMOVE(notifier, node);
  32}
  33
  34void notifier_list_notify(NotifierList *list, void *data)
  35{
  36    Notifier *notifier, *next;
  37
  38    QLIST_FOREACH_SAFE(notifier, &list->notifiers, node, next) {
  39        notifier->notify(notifier, data);
  40    }
  41}
  42
  43void notifier_with_return_list_init(NotifierWithReturnList *list)
  44{
  45    QLIST_INIT(&list->notifiers);
  46}
  47
  48void notifier_with_return_list_add(NotifierWithReturnList *list,
  49                                   NotifierWithReturn *notifier)
  50{
  51    QLIST_INSERT_HEAD(&list->notifiers, notifier, node);
  52}
  53
  54void notifier_with_return_remove(NotifierWithReturn *notifier)
  55{
  56    QLIST_REMOVE(notifier, node);
  57}
  58
  59int notifier_with_return_list_notify(NotifierWithReturnList *list, void *data)
  60{
  61    NotifierWithReturn *notifier, *next;
  62    int ret = 0;
  63
  64    QLIST_FOREACH_SAFE(notifier, &list->notifiers, node, next) {
  65        ret = notifier->notify(notifier, data);
  66        if (ret != 0) {
  67            break;
  68        }
  69    }
  70    return ret;
  71}
  72