object: release all props

Class properties may have to release resources when the object is
destroyed. Let's use the existing release() callback for that, but
class properties must not release ObjectProperty, as it can be shared
by various instances.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20200110153039.1379601-18-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 10 insertions, 11 deletions

diff --git a/qom/object.c b/qom/object.c
index a3da546366..66c4a5f1cb 100644
--- a/qom/object.c
+++ b/qom/object.c
@@ -592,23 +592,22 @@ static inline bool object_property_is_child(ObjectProperty *prop)
 
 static void object_property_del_all(Object *obj)
 {
+    g_autoptr(GHashTable) done = g_hash_table_new(NULL, NULL);
     ObjectProperty *prop;
-    GHashTableIter iter;
-    gpointer key, value;
+    ObjectPropertyIterator iter;
     bool released;
 
     do {
         released = false;
-        g_hash_table_iter_init(&iter, obj->properties);
-        while (g_hash_table_iter_next(&iter, &key, &value)) {
-            prop = value;
-            if (prop->release) {
-                prop->release(obj, prop->name, prop->opaque);
-                prop->release = NULL;
-                released = true;
-                break;
+        object_property_iter_init(&iter, obj);
+        while ((prop = object_property_iter_next(&iter)) != NULL) {
+            if (g_hash_table_add(done, prop)) {
+                if (prop->release) {
+                    prop->release(obj, prop->name, prop->opaque);
+                    released = true;
+                    break;
+                }
             }
-            g_hash_table_iter_remove(&iter);
         }
     } while (released);