[glib] binding: Remove GObject data usage

[Garrett Regier <gregier src gnome org>]

commit 36593a3aba8dded2781a2bdd9b2ad0050dc939f2
Author: Garrett Regier <garrettregier gmail com>
Date:   Wed Jun 3 17:13:53 2015 -0700

    binding: Remove GObject data usage
    
    It isn't actually doing anything, instead it is
    being managed without actually being used.
    This has the result that GBinding is now more
    thread-safe.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=745013

 gobject/gbinding.c |   46 ++--------------------------------------------
 1 files changed, 2 insertions(+), 44 deletions(-)
---
diff --git a/gobject/gbinding.c b/gobject/gbinding.c
index e259f2c..d22dde1 100644
--- a/gobject/gbinding.c
+++ b/gobject/gbinding.c
@@ -192,40 +192,9 @@ enum
 };
 
 static guint gobject_notify_signal_id;
-static GQuark quark_gbinding = 0;
 
 G_DEFINE_TYPE (GBinding, g_binding, G_TYPE_OBJECT);
 
-static inline void
-add_binding_qdata (GObject  *gobject,
-                   GBinding *binding)
-{
-  GHashTable *bindings;
-
-  bindings = g_object_get_qdata (gobject, quark_gbinding);
-  if (bindings == NULL)
-    {
-      bindings = g_hash_table_new (NULL, NULL);
-
-      g_object_set_qdata_full (gobject, quark_gbinding,
-                               bindings,
-                               (GDestroyNotify) g_hash_table_unref);
-    }
-
-  g_hash_table_add (bindings, binding);
-}
-
-static inline void
-remove_binding_qdata (GObject  *gobject,
-                      GBinding *binding)
-{
-  GHashTable *bindings;
-
-  bindings = g_object_get_qdata (gobject, quark_gbinding);
-  if (binding != NULL)
-    g_hash_table_remove (bindings, binding);
-}
-
 /* the basic assumption is that if either the source or the target
  * goes away then the binding does not exist any more and it should
  * be reaped as well
@@ -248,7 +217,6 @@ weak_unbind (gpointer  user_data,
         g_signal_handler_disconnect (binding->source, binding->source_notify);
 
       g_object_weak_unref (binding->source, weak_unbind, user_data);
-      remove_binding_qdata (binding->source, binding);
 
       binding->source_notify = 0;
       binding->source = NULL;
@@ -263,7 +231,6 @@ weak_unbind (gpointer  user_data,
         g_signal_handler_disconnect (binding->target, binding->target_notify);
 
       g_object_weak_unref (binding->target, weak_unbind, user_data);
-      remove_binding_qdata (binding->target, binding);
 
       binding->target_notify = 0;
       binding->target = NULL;
@@ -444,7 +411,6 @@ g_binding_unbind_internal (GBinding *binding,
         g_signal_handler_disconnect (binding->source, binding->source_notify);
 
       g_object_weak_unref (binding->source, weak_unbind, binding);
-      remove_binding_qdata (binding->source, binding);
 
       binding->source_notify = 0;
       binding->source = NULL;
@@ -456,10 +422,7 @@ g_binding_unbind_internal (GBinding *binding,
         g_signal_handler_disconnect (binding->target, binding->target_notify);
 
       if (!source_is_target)
-        {
-          g_object_weak_unref (binding->target, weak_unbind, binding);
-          remove_binding_qdata (binding->target, binding);
-        }
+        g_object_weak_unref (binding->target, weak_unbind, binding);
 
       binding->target_notify = 0;
       binding->target = NULL;
@@ -590,7 +553,6 @@ g_binding_constructed (GObject *gobject)
                                                            FALSE);
 
   g_object_weak_ref (binding->source, weak_unbind, binding);
-  add_binding_qdata (binding->source, binding);
 
   if (binding->flags & G_BINDING_BIDIRECTIONAL)
     {
@@ -608,10 +570,7 @@ g_binding_constructed (GObject *gobject)
     }
 
   if (binding->target != binding->source)
-    {
-      g_object_weak_ref (binding->target, weak_unbind, binding);
-      add_binding_qdata (binding->target, binding);
-    }
+    g_object_weak_ref (binding->target, weak_unbind, binding);
 }
 
 static void
@@ -619,7 +578,6 @@ g_binding_class_init (GBindingClass *klass)
 {
   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 
-  quark_gbinding = g_quark_from_static_string ("g-binding");
   gobject_notify_signal_id = g_signal_lookup ("notify", G_TYPE_OBJECT);
   g_assert (gobject_notify_signal_id != 0);