Re: [Qemu-devel] [PATCH 01/25] qom: add object_class_get_parent

[Anthony Liguori]

On 04/03/2012 06:15 AM, Paolo Bonzini wrote:

This simple bit of functionality was missing and we'll need it soon,
so add it.

Signed-off-by: Paolo Bonzini<pbonz...@redhat.com>

Reviewed-by: Anthony Liguori <aligu...@us.ibm.com>

Regards,

Anthony Liguori

---
  include/qemu/object.h |   14 ++++++++++++++
  qom/object.c          |   13 +++++++++++++
  2 files changed, 27 insertions(+)

diff --git a/include/qemu/object.h b/include/qemu/object.h
index a675937..f814521 100644
--- a/include/qemu/object.h
+++ b/include/qemu/object.h
@@ -548,6 +548,14 @@ ObjectClass *object_class_dynamic_cast(ObjectClass *klass,
                                         const char *typename);

  /**
+ * object_class_get_parent:
+ * @klass: The class to obtain the parent for.
+ *
+ * Returns: The parent for @klass.
+ */
+ObjectClass *object_class_get_parent(ObjectClass *klass);
+
+/**
   * object_class_get_name:
   * @klass: The class to obtain the QOM typename for.
   *
@@ -555,6 +563,12 @@ ObjectClass *object_class_dynamic_cast(ObjectClass *klass,
   */
  const char *object_class_get_name(ObjectClass *klass);

+/**
+ * object_class_by_name:
+ * @typename: The QOM typename to obtain the class for.
+ *
+ * Returns: The class for @typename.
+ */
  ObjectClass *object_class_by_name(const char *typename);

  void object_class_foreach(void (*fn)(ObjectClass *klass, void *opaque),
diff --git a/qom/object.c b/qom/object.c
index e721fc2..3e9fed7 100644
--- a/qom/object.c
+++ b/qom/object.c
@@ -545,6 +545,19 @@ ObjectClass *object_class_by_name(const char *typename)
      return type->class;
  }

+ObjectClass *object_class_get_parent(ObjectClass *class)
+{
+    TypeImpl *type = type_get_parent(class->type);
+
+    if (!type) {
+        return NULL;
+    }
+
+    type_initialize(type);
+
+    return type->class;
+}
+
  typedef struct OCFData
  {
      void (*fn)(ObjectClass *klass, void *opaque);