Commit 32efc535 authored by Paolo Bonzini's avatar Paolo Bonzini Committed by Andreas Färber
Browse files

qom: Add object_child_foreach() 



A utility function that will be used to implement hierarchical realization.

Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Reviewed-by: default avatarAnthony Liguori <aliguori@us.ibm.com>
[AF: Drop unrelated whitespace change, add Returns: in documentation]
[AF: Use new object_property_is_child() helper.]
Signed-off-by: default avatarAndreas Färber <afaerber@suse.de>
parent 5d9d3f47

include/qemu/object.h

+14 −0
Original line number Diff line number Diff line
@@ -917,6 +917,20 @@ void object_property_add_str(Object *obj, const char *name, 
                             void (*set)(Object *, const char *, struct Error **),

                             struct Error **errp);



/**

 * object_child_foreach:

 * @obj: the object whose children will be navigated

 * @fn: the iterator function to be called

 * @opaque: an opaque value that will be passed to the iterator

 *

 * Call @fn passing each child of @obj and @opaque to it, until @fn returns

 * non-zero.

 *

 * Returns: The last value returned by @fn, or 0 if there is no child.

 */

int object_child_foreach(Object *obj, int (*fn)(Object *child, void *opaque),

                         void *opaque);



/**

 * container_get:

 * @root: root of the #path, e.g., object_get_root()

qom/object.c

+17 −0
Original line number Diff line number Diff line
@@ -607,6 +607,23 @@ void object_class_foreach(void (*fn)(ObjectClass *klass, void *opaque), 
    g_hash_table_foreach(type_table_get(), object_class_foreach_tramp, &data);

}



int object_child_foreach(Object *obj, int (*fn)(Object *child, void *opaque),

                         void *opaque)

{

    ObjectProperty *prop;

    int ret = 0;



    QTAILQ_FOREACH(prop, &obj->properties, node) {

        if (object_property_is_child(prop)) {

            ret = fn(prop->opaque, opaque);

            if (ret != 0) {

                break;

            }

        }

    }

    return ret;

}



static void object_class_get_list_tramp(ObjectClass *klass, void *opaque)

{

    GSList **list = opaque;