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-common.h"
  18#include "qemu/notify.h"
  19
  20void notifier_list_init(NotifierList *list)
  21{
  22    QLIST_INIT(&list->notifiers);
  23}
  24
  25void notifier_list_add(NotifierList *list, Notifier *notifier)
  26{
  27    QLIST_INSERT_HEAD(&list->notifiers, notifier, node);
  28}
  29
  30void notifier_remove(Notifier *notifier)
  31{
  32    QLIST_REMOVE(notifier, node);
  33}
  34
  35void notifier_list_notify(NotifierList *list, void *data)
  36{
  37    Notifier *notifier, *next;
  38
  39    QLIST_FOREACH_SAFE(notifier, &list->notifiers, node, next) {
  40        notifier->notify(notifier, data);
  41    }
  42}
  43
  44void notifier_with_return_list_init(NotifierWithReturnList *list)
  45{
  46    QLIST_INIT(&list->notifiers);
  47}
  48
  49void notifier_with_return_list_add(NotifierWithReturnList *list,
  50                                   NotifierWithReturn *notifier)
  51{
  52    QLIST_INSERT_HEAD(&list->notifiers, notifier, node);
  53}
  54
  55void notifier_with_return_remove(NotifierWithReturn *notifier)
  56{
  57    QLIST_REMOVE(notifier, node);
  58}
  59
  60int notifier_with_return_list_notify(NotifierWithReturnList *list, void *data)
  61{
  62    NotifierWithReturn *notifier, *next;
  63    int ret = 0;
  64
  65    QLIST_FOREACH_SAFE(notifier, &list->notifiers, node, next) {
  66        ret = notifier->notify(notifier, data);
  67        if (ret != 0) {
  68            break;
  69        }
  70    }
  71    return ret;
  72}
  73