forked from AuroraMiddleware/gtk
fb998ff52d
`gtk_builder_get_parameters()` is a hot path, being called twice for each object in each UI file in an application. The majority of objects have ≤ 8 properties, which are each filtered into either `parameters` or `filtered_parameters`. Unfortunately, both of those arrays are created as empty `GArray`s, and adding 8 elements to an empty `GArray` hits the worst possible case of reallocating and `memcpy()`ing the array 3 times. As the array size is doubled with each reallocation, the cost is not particularly well amortised when the array size is small. From the `ObjectInfo`, we actually know how many properties there are in total, so just allocate the arrays at the right size to begin with. This saves 7% of the instruction cycles needed to start up gnome-software to the point where it’s showing its main window, according to callgrind. gnome-software is making around 5500 calls to `gtk_builder_get_parameters()`. Signed-off-by: Philip Withnall <withnall@endlessm.com>
209 lines
6.6 KiB
C
209 lines
6.6 KiB
C
/* gtkbuilderprivate.h
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* Copyright (C) 2006-2007 Async Open Source,
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* Johan Dahlin <jdahlin@async.com.br>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __GTK_BUILDER_PRIVATE_H__
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#define __GTK_BUILDER_PRIVATE_H__
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#include "gtkbuilder.h"
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typedef struct {
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const gchar *name;
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} TagInfo;
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typedef struct {
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TagInfo tag;
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} CommonInfo;
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typedef struct {
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TagInfo tag;
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GType type;
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GObjectClass *oclass;
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gchar *id;
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gchar *constructor;
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GSList *properties;
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gsize n_properties;
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GSList *signals;
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GSList *bindings;
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GObject *object;
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CommonInfo *parent;
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gboolean applied_properties;
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} ObjectInfo;
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typedef struct {
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TagInfo tag;
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gchar *id;
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GHashTable *objects;
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} MenuInfo;
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typedef struct {
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TagInfo tag;
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GSList *packing_properties;
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GObject *object;
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CommonInfo *parent;
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gchar *type;
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gchar *internal_child;
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gboolean added;
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} ChildInfo;
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typedef struct {
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TagInfo tag;
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GParamSpec *pspec;
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GString *text;
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gboolean translatable:1;
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gboolean bound:1;
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gchar *context;
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gint line;
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gint col;
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} PropertyInfo;
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typedef struct {
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TagInfo tag;
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gchar *object_name;
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guint id;
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GQuark detail;
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gchar *handler;
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GConnectFlags flags;
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gchar *connect_object_name;
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} SignalInfo;
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typedef struct
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{
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GObject *target;
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GParamSpec *target_pspec;
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gchar *source;
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gchar *source_property;
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GBindingFlags flags;
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gint line;
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gint col;
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} BindingInfo;
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typedef struct {
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TagInfo tag;
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gchar *library;
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gint major;
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gint minor;
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} RequiresInfo;
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typedef struct {
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GMarkupParser *parser;
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gchar *tagname;
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const gchar *start;
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gpointer data;
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GObject *object;
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GObject *child;
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} SubParser;
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typedef struct {
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const gchar *last_element;
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GtkBuilder *builder;
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gchar *domain;
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GSList *stack;
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SubParser *subparser;
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GMarkupParseContext *ctx;
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const gchar *filename;
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GSList *finalizers;
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GSList *custom_finalizers;
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GSList *requested_objects; /* NULL if all the objects are requested */
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gboolean inside_requested_object;
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gint requested_object_level;
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gint cur_object_level;
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gint object_counter;
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GHashTable *object_ids;
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} ParserData;
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typedef GType (*GTypeGetFunc) (void);
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/* Things only GtkBuilder should use */
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void _gtk_builder_parser_parse_buffer (GtkBuilder *builder,
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const gchar *filename,
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const gchar *buffer,
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gsize length,
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gchar **requested_objs,
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GError **error);
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GObject * _gtk_builder_construct (GtkBuilder *builder,
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ObjectInfo *info,
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GError **error);
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void _gtk_builder_apply_properties (GtkBuilder *builder,
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ObjectInfo *info,
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GError **error);
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void _gtk_builder_add_object (GtkBuilder *builder,
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const gchar *id,
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GObject *object);
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void _gtk_builder_add (GtkBuilder *builder,
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ChildInfo *child_info);
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void _gtk_builder_add_signals (GtkBuilder *builder,
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GSList *signals);
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void _gtk_builder_finish (GtkBuilder *builder);
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void _free_signal_info (SignalInfo *info,
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gpointer user_data);
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/* Internal API which might be made public at some point */
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gboolean _gtk_builder_boolean_from_string (const gchar *string,
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gboolean *value,
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GError **error);
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gboolean _gtk_builder_enum_from_string (GType type,
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const gchar *string,
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gint *enum_value,
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GError **error);
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gboolean _gtk_builder_flags_from_string (GType type,
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GFlagsValue *aliases,
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const char *string,
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guint *value,
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GError **error);
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const gchar * _gtk_builder_parser_translate (const gchar *domain,
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const gchar *context,
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const gchar *text);
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gchar * _gtk_builder_get_resource_path (GtkBuilder *builder,
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const gchar *string);
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gchar * _gtk_builder_get_absolute_filename (GtkBuilder *builder,
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const gchar *string);
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void _gtk_builder_menu_start (ParserData *parser_data,
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const gchar *element_name,
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const gchar **attribute_names,
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const gchar **attribute_values,
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GError **error);
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void _gtk_builder_menu_end (ParserData *parser_data);
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GType _gtk_builder_get_template_type (GtkBuilder *builder);
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void _gtk_builder_prefix_error (GtkBuilder *builder,
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GMarkupParseContext *context,
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GError **error);
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void _gtk_builder_error_unhandled_tag (GtkBuilder *builder,
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GMarkupParseContext *context,
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const gchar *object,
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const gchar *element_name,
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GError **error);
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gboolean _gtk_builder_check_parent (GtkBuilder *builder,
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GMarkupParseContext *context,
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const gchar *parent_name,
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GError **error);
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GObject * _gtk_builder_lookup_object (GtkBuilder *builder,
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const gchar *name,
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gint line,
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gint col);
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gboolean _gtk_builder_lookup_failed (GtkBuilder *builder,
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GError **error);
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#endif /* __GTK_BUILDER_PRIVATE_H__ */
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