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-rw-r--r--qemu/util/notify.c71
1 files changed, 71 insertions, 0 deletions
diff --git a/qemu/util/notify.c b/qemu/util/notify.c
new file mode 100644
index 000000000..f215dfc21
--- /dev/null
+++ b/qemu/util/notify.c
@@ -0,0 +1,71 @@
+/*
+ * Notifier lists
+ *
+ * Copyright IBM, Corp. 2010
+ *
+ * Authors:
+ * Anthony Liguori <aliguori@us.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ * Contributions after 2012-01-13 are licensed under the terms of the
+ * GNU GPL, version 2 or (at your option) any later version.
+ */
+
+#include "qemu-common.h"
+#include "qemu/notify.h"
+
+void notifier_list_init(NotifierList *list)
+{
+ QLIST_INIT(&list->notifiers);
+}
+
+void notifier_list_add(NotifierList *list, Notifier *notifier)
+{
+ QLIST_INSERT_HEAD(&list->notifiers, notifier, node);
+}
+
+void notifier_remove(Notifier *notifier)
+{
+ QLIST_REMOVE(notifier, node);
+}
+
+void notifier_list_notify(NotifierList *list, void *data)
+{
+ Notifier *notifier, *next;
+
+ QLIST_FOREACH_SAFE(notifier, &list->notifiers, node, next) {
+ notifier->notify(notifier, data);
+ }
+}
+
+void notifier_with_return_list_init(NotifierWithReturnList *list)
+{
+ QLIST_INIT(&list->notifiers);
+}
+
+void notifier_with_return_list_add(NotifierWithReturnList *list,
+ NotifierWithReturn *notifier)
+{
+ QLIST_INSERT_HEAD(&list->notifiers, notifier, node);
+}
+
+void notifier_with_return_remove(NotifierWithReturn *notifier)
+{
+ QLIST_REMOVE(notifier, node);
+}
+
+int notifier_with_return_list_notify(NotifierWithReturnList *list, void *data)
+{
+ NotifierWithReturn *notifier, *next;
+ int ret = 0;
+
+ QLIST_FOREACH_SAFE(notifier, &list->notifiers, node, next) {
+ ret = notifier->notify(notifier, data);
+ if (ret != 0) {
+ break;
+ }
+ }
+ return ret;
+}