libnm: rework setting metadata for property handling

NMSetting internally already tracked a list of all proper GObject properties
and D-Bus-only properties.

Rework the tracking of the list, so that:

- instead of attaching the data to the GType of the setting via
  g_type_set_qdata(), it is tracked in a static array indexed by
  NMMetaSettingType. This allows to find the setting-data by simple
  pointer arithmetic, instead of taking a look and iterating (like
  g_type_set_qdata() does).

  Note, that this is still thread safe, because the static table entry is
  initialized in the class-init function with _nm_setting_class_commit().
  And it only accessed by following a NMSettingClass instance, thus
  the class constructor already ran (maybe not for all setting classes,
  but for the particular one that we look up).

  I think this makes initialization of the metadata simpler to
  understand.
  Previously, in a first phase each class would attach the metadata
  to the GType as setting_property_overrides_quark(). Then during
  nm_setting_class_ensure_properties() it would merge them and
  set as setting_properties_quark(). Now, during the first phase,
  we only incrementally build a properties_override GArray, which
  we finally hand over during nm_setting_class_commit().

- sort the property infos by name and do binary search.

Also expose this meta data types as internal API in nm-setting-private.h.
While not accessed yet, it can prove beneficial, to have direct (internal)
access to these structures.

Also, rename NMSettingProperty to NMSettInfoProperty to use a distinct
naming scheme. We already have 40+ subclasses of NMSetting that are called
NMSetting*. Likewise, NMMetaSetting* is heavily used already. So, choose a
new, distinct name.

1 files changed, 12 insertions, 6 deletions

diff --git a/libnm-core/nm-setting-connection.c b/libnm-core/nm-setting-connection.c
index 6a6c76036f..a7d1777f01 100644
--- a/libnm-core/nm-setting-connection.c
+++ b/libnm-core/nm-setting-connection.c
@@ -1505,6 +1505,7 @@ nm_setting_connection_class_init (NMSettingConnectionClass *klass)
 {
 	GObjectClass *object_class = G_OBJECT_CLASS (klass);
 	NMSettingClass *setting_class = NM_SETTING_CLASS (klass);
+	GArray *properties_override = _nm_sett_info_property_override_create_array ();
 
 	g_type_class_add_private (klass, sizeof (NMSettingConnectionPrivate));
 
@@ -1512,7 +1513,6 @@ nm_setting_connection_class_init (NMSettingConnectionClass *klass)
 	object_class->get_property = get_property;
 	object_class->finalize     = finalize;
 
-	setting_class->setting_info     = &nm_meta_setting_infos[NM_META_SETTING_TYPE_CONNECTION];
 	setting_class->verify           = verify;
 	setting_class->compare_property = compare_property;
 
@@ -1651,11 +1651,14 @@ nm_setting_connection_class_init (NMSettingConnectionClass *klass)
 		                      G_PARAM_READWRITE |
 		                      NM_SETTING_PARAM_INFERRABLE |
 		                      G_PARAM_STATIC_STRINGS));
-	_nm_setting_class_override_property (setting_class, NM_SETTING_CONNECTION_INTERFACE_NAME,
-	                                     G_VARIANT_TYPE_STRING,
-	                                     NULL,
-	                                     nm_setting_connection_set_interface_name,
-	                                     nm_setting_connection_no_interface_name);
+
+	_properties_override_add_override (properties_override,
+	                                   g_object_class_find_property (G_OBJECT_CLASS (setting_class),
+	                                                                 NM_SETTING_CONNECTION_INTERFACE_NAME),
+	                                   G_VARIANT_TYPE_STRING,
+	                                   NULL,
+	                                   nm_setting_connection_set_interface_name,
+	                                   nm_setting_connection_no_interface_name);
 
 	/**
 	 * NMSettingConnection:type:
@@ -2125,4 +2128,7 @@ nm_setting_connection_class_init (NMSettingConnectionClass *klass)
 		                   NM_SETTING_CONNECTION_MDNS_DEFAULT,
 		                   G_PARAM_READWRITE |
 		                   G_PARAM_STATIC_STRINGS));
+
+	_nm_setting_class_commit_full (setting_class, NM_META_SETTING_TYPE_CONNECTION,
+	                               NULL, properties_override);
 }