actor: Annotate signals to enable some optimization

The ::paint, ::queue-redraw, and ::queue-relayout signals should be
marked as no-recurse and no-hooks; these signals are emitted *a lot*
during each frame, and since GLib has a bunch of optimizations for
signals with no closures, we should try and squeeze every single CPU
cycle we can.

diff --git a/clutter/clutter-actor.c b/clutter/clutter-actor.c
index 348bb5c..ecf94e6 100644 (file)
--- a/clutter/clutter-actor.c
+++ b/clutter/clutter-actor.c
@@ -6045,7 +6045,9 @@ clutter_actor_class_init (ClutterActorClass *klass)
   actor_signals[QUEUE_REDRAW] =
     g_signal_new (I_("queue-redraw"),
                  G_TYPE_FROM_CLASS (object_class),
-                 G_SIGNAL_RUN_LAST,
+                 G_SIGNAL_RUN_LAST |
+                  G_SIGNAL_NO_RECURSE |
+                  G_SIGNAL_NO_HOOKS,
                  G_STRUCT_OFFSET (ClutterActorClass, queue_redraw),
                  NULL, NULL,
                  _clutter_marshal_VOID__OBJECT,
@@ -6072,7 +6074,9 @@ clutter_actor_class_init (ClutterActorClass *klass)
   actor_signals[QUEUE_RELAYOUT] =
     g_signal_new (I_("queue-relayout"),
                  G_TYPE_FROM_CLASS (object_class),
-                 G_SIGNAL_RUN_LAST,
+                 G_SIGNAL_RUN_LAST |
+                  G_SIGNAL_NO_RECURSE |
+                  G_SIGNAL_NO_HOOKS,
                  G_STRUCT_OFFSET (ClutterActorClass, queue_relayout),
                  NULL, NULL,
                  _clutter_marshal_VOID__VOID,
@@ -6359,7 +6363,9 @@ clutter_actor_class_init (ClutterActorClass *klass)
   actor_signals[PAINT] =
     g_signal_new (I_("paint"),
                   G_TYPE_FROM_CLASS (object_class),
-                  G_SIGNAL_RUN_LAST,
+                  G_SIGNAL_RUN_LAST |
+                  G_SIGNAL_NO_RECURSE |
+                  G_SIGNAL_NO_HOOKS,
                   G_STRUCT_OFFSET (ClutterActorClass, paint),
                   NULL, NULL,
                   _clutter_marshal_VOID__VOID,