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[v2,RESEND,01/20] qom: Introduce object_class_get_list()

Message ID 1331398436-20761-2-git-send-email-afaerber@suse.de
State New
Headers show

Commit Message

Andreas Färber March 10, 2012, 4:53 p.m. UTC 
This function allows to obtain a singly-linked list of classes, which
can be sorted by the caller.

Signed-off-by: Andreas Färber <afaerber@suse.de>
Cc: Anthony Liguori <anthony@codemonkey.ws>
---
 include/qemu/object.h |   11 +++++++++++
 qom/object.c          |   17 +++++++++++++++++
 2 files changed, 28 insertions(+), 0 deletions(-)
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Patch

diff --git a/include/qemu/object.h b/include/qemu/object.h
index ec2d294..e8fc126 100644
--- a/include/qemu/object.h
+++ b/include/qemu/object.h
@@ -560,6 +560,17 @@  ObjectClass *object_class_by_name(const char *typename);
 void object_class_foreach(void (*fn)(ObjectClass *klass, void *opaque),
                           const char *implements_type, bool include_abstract,
                           void *opaque);
+
+/**
+ * object_class_get_list:
+ * @implements_type: The type to filter for, including its derivatives.
+ * @include_abstract: Whether to include abstract classes.
+ *
+ * Returns: A singly-linked list of the classes in reverse hashtable order.
+ */
+GSList *object_class_get_list(const char *implements_type,
+                              bool include_abstract);
+
 /**
  * object_ref:
  * @obj: the object
diff --git a/qom/object.c b/qom/object.c
index aa037d2..eef0b22 100644
--- a/qom/object.c
+++ b/qom/object.c
@@ -572,6 +572,23 @@  void object_class_foreach(void (*fn)(ObjectClass *klass, void *opaque),
     g_hash_table_foreach(type_table_get(), object_class_foreach_tramp, &data);
 }
 
+static void object_class_get_list_tramp(ObjectClass *klass, void *opaque)
+{
+    GSList **list = opaque;
+
+    *list = g_slist_prepend(*list, klass);
+}
+
+GSList *object_class_get_list(const char *implements_type,
+                              bool include_abstract)
+{
+    GSList *list = NULL;
+
+    object_class_foreach(object_class_get_list_tramp,
+                         implements_type, include_abstract, &list);
+    return list;
+}
+
 void object_ref(Object *obj)
 {
     obj->ref++;