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From 6881aa5ca235ee0737c2a409ffab966a10e5971e Mon Sep 17 00:00:00 2001
From: Christian Hergert <christian@hergert.me>
Date: Mon, 24 Feb 2020 22:36:27 +0000
Subject: [PATCH 2/3] clutter: avoid g_signal_emit_by_name() from ClutterActor
g_signal_emit_by_name() is used to emit signals on ClutterContainer when
actors are removed or added. It happens to do various interface lookups
which are a bit unneccessary and can allocate memory.
Simply using emission wrappers makes all of that go away.
https://gitlab.gnome.org/GNOME/mutter/merge_requests/1083
---
clutter/clutter/cally/cally-actor.c | 5 +--
clutter/clutter/clutter-actor.c | 17 ++++++++--
clutter/clutter/clutter-actor.h | 5 ++-
clutter/clutter/clutter-container-private.h | 36 +++++++++++++++++++++
clutter/clutter/clutter-container.c | 21 ++++++++++++
5 files changed, 78 insertions(+), 6 deletions(-)
create mode 100644 clutter/clutter/clutter-container-private.h
diff --git a/clutter/clutter/cally/cally-actor.c b/clutter/clutter/cally/cally-actor.c
index 548615f48..517969625 100644
--- a/clutter/clutter/cally/cally-actor.c
+++ b/clutter/clutter/cally/cally-actor.c
@@ -604,10 +604,11 @@ cally_actor_real_remove_actor (ClutterActor *container,
g_return_val_if_fail (CLUTTER_IS_ACTOR (actor), 0);
atk_parent = ATK_OBJECT (data);
- atk_child = clutter_actor_get_accessible (actor);
- if (atk_child)
+ if (clutter_actor_has_accessible (actor))
{
+ atk_child = clutter_actor_get_accessible (actor);
+
g_value_init (&values.old_value, G_TYPE_POINTER);
g_value_set_pointer (&values.old_value, atk_parent);
diff --git a/clutter/clutter/clutter-actor.c b/clutter/clutter/clutter-actor.c
index 803f76aae..93d0a93ef 100644
--- a/clutter/clutter/clutter-actor.c
+++ b/clutter/clutter/clutter-actor.c
@@ -624,7 +624,7 @@
#include "clutter-color-static.h"
#include "clutter-color.h"
#include "clutter-constraint-private.h"
-#include "clutter-container.h"
+#include "clutter-container-private.h"
#include "clutter-content-private.h"
#include "clutter-debug.h"
#include "clutter-easing.h"
@@ -4372,7 +4372,7 @@ clutter_actor_remove_child_internal (ClutterActor *self,
/* we need to emit the signal before dropping the reference */
if (emit_actor_removed)
- g_signal_emit_by_name (self, "actor-removed", child);
+ _clutter_container_emit_actor_removed (CLUTTER_CONTAINER (self), child);
if (notify_first_last)
{
@@ -13060,7 +13060,7 @@ clutter_actor_add_child_internal (ClutterActor *self,
}
if (emit_actor_added)
- g_signal_emit_by_name (self, "actor-added", child);
+ _clutter_container_emit_actor_added (CLUTTER_CONTAINER (self), child);
if (notify_first_last)
{
@@ -21448,3 +21448,14 @@ clutter_actor_create_texture_paint_node (ClutterActor *self,
return node;
}
+
+gboolean
+clutter_actor_has_accessible (ClutterActor *actor)
+{
+ g_return_val_if_fail (CLUTTER_IS_ACTOR (actor), FALSE);
+
+ if (CLUTTER_ACTOR_GET_CLASS (actor)->has_accessible)
+ return CLUTTER_ACTOR_GET_CLASS (actor)->has_accessible (actor);
+
+ return TRUE;
+}
diff --git a/clutter/clutter/clutter-actor.h b/clutter/clutter/clutter-actor.h
index 7d2168af1..d286f2843 100644
--- a/clutter/clutter/clutter-actor.h
+++ b/clutter/clutter/clutter-actor.h
@@ -296,10 +296,11 @@ struct _ClutterActorClass
gboolean (* touch_event) (ClutterActor *self,
ClutterTouchEvent *event);
+ gboolean (* has_accessible) (ClutterActor *self);
/*< private >*/
/* padding for future expansion */
- gpointer _padding_dummy[26];
+ gpointer _padding_dummy[25];
};
/**
@@ -369,6 +370,8 @@ CLUTTER_EXPORT
const gchar * clutter_actor_get_name (ClutterActor *self);
CLUTTER_EXPORT
AtkObject * clutter_actor_get_accessible (ClutterActor *self);
+CLUTTER_EXPORT
+gboolean clutter_actor_has_accessible (ClutterActor *self);
CLUTTER_EXPORT
gboolean clutter_actor_is_visible (ClutterActor *self);
diff --git a/clutter/clutter/clutter-container-private.h b/clutter/clutter/clutter-container-private.h
new file mode 100644
index 000000000..d619a6531
--- /dev/null
+++ b/clutter/clutter/clutter-container-private.h
@@ -0,0 +1,36 @@
+/*
+ * Clutter.
+ *
+ * An OpenGL based 'interactive canvas' library.
+ *
+ * Copyright 2020 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __CLUTTER_CONTAINER_PRIVATE_H__
+#define __CLUTTER_CONTAINER_PRIVATE_H__
+
+#include <clutter/clutter-container.h>
+
+G_BEGIN_DECLS
+
+void _clutter_container_emit_actor_added (ClutterContainer *container,
+ ClutterActor *actor);
+void _clutter_container_emit_actor_removed (ClutterContainer *container,
+ ClutterActor *actor);
+
+G_END_DECLS
+
+#endif /* __CLUTTER_CONTAINER_PRIVATE_H__ */
diff --git a/clutter/clutter/clutter-container.c b/clutter/clutter/clutter-container.c
index 0f611ae55..79abb5b4f 100644
--- a/clutter/clutter/clutter-container.c
+++ b/clutter/clutter/clutter-container.c
@@ -37,6 +37,7 @@
#include "clutter-actor-private.h"
#include "clutter-child-meta.h"
+#include "clutter-container-private.h"
#include "clutter-debug.h"
#include "clutter-main.h"
#include "clutter-marshal.h"
@@ -1446,3 +1447,23 @@ clutter_container_child_notify (ClutterContainer *container,
child,
pspec);
}
+
+void
+_clutter_container_emit_actor_added (ClutterContainer *container,
+ ClutterActor *actor)
+{
+ g_return_if_fail (CLUTTER_IS_CONTAINER (container));
+ g_return_if_fail (CLUTTER_IS_ACTOR (actor));
+
+ g_signal_emit (container, container_signals[ACTOR_ADDED], 0, actor);
+}
+
+void
+_clutter_container_emit_actor_removed (ClutterContainer *container,
+ ClutterActor *actor)
+{
+ g_return_if_fail (CLUTTER_IS_CONTAINER (container));
+ g_return_if_fail (CLUTTER_IS_ACTOR (actor));
+
+ g_signal_emit (container, container_signals[ACTOR_REMOVED], 0, actor);
+}
--
2.26.0
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