1 /* GObject - GLib Type, Object, Parameter and Signal Library
2 * Copyright (C) 1998-1999, 2000-2001 Tim Janik and Red Hat, Inc.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General
15 * Public License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
17 * Boston, MA 02111-1307, USA.
20 #include "gobjectalias.h"
21 #include <glib/gdatasetprivate.h>
24 * MT safe with regards to reference counting.
27 #include "gvaluecollector.h"
29 #include "gparamspecs.h"
30 #include "gvaluetypes.h"
31 #include "gobjectnotifyqueue.c"
36 #define PREALLOC_CPARAMS (8)
40 #define PARAM_SPEC_PARAM_ID(pspec) ((pspec)->param_id)
41 #define PARAM_SPEC_SET_PARAM_ID(pspec, id) ((pspec)->param_id = (id))
43 #define OBJECT_HAS_TOGGLE_REF_FLAG 0x1
44 #define OBJECT_HAS_TOGGLE_REF(object) \
45 ((G_DATALIST_GET_FLAGS (&(object)->qdata) & OBJECT_HAS_TOGGLE_REF_FLAG) != 0)
46 #define OBJECT_FLOATING_FLAG 0x2
56 /* --- properties --- */
62 /* --- prototypes --- */
63 static void g_object_base_class_init (GObjectClass *class);
64 static void g_object_base_class_finalize (GObjectClass *class);
65 static void g_object_do_class_init (GObjectClass *class);
66 static void g_object_init (GObject *object);
67 static GObject* g_object_constructor (GType type,
68 guint n_construct_properties,
69 GObjectConstructParam *construct_params);
70 static void g_object_real_dispose (GObject *object);
71 static void g_object_finalize (GObject *object);
72 static void g_object_do_set_property (GObject *object,
76 static void g_object_do_get_property (GObject *object,
80 static void g_value_object_init (GValue *value);
81 static void g_value_object_free_value (GValue *value);
82 static void g_value_object_copy_value (const GValue *src_value,
84 static void g_value_object_transform_value (const GValue *src_value,
86 static gpointer g_value_object_peek_pointer (const GValue *value);
87 static gchar* g_value_object_collect_value (GValue *value,
88 guint n_collect_values,
89 GTypeCValue *collect_values,
91 static gchar* g_value_object_lcopy_value (const GValue *value,
92 guint n_collect_values,
93 GTypeCValue *collect_values,
95 static void g_object_dispatch_properties_changed (GObject *object,
98 static inline void object_get_property (GObject *object,
101 static inline void object_set_property (GObject *object,
104 GObjectNotifyQueue *nqueue);
105 static guint object_floating_flag_handler (GObject *object,
108 static void object_interface_check_properties (gpointer func_data,
112 /* --- variables --- */
113 static GQuark quark_closure_array = 0;
114 static GQuark quark_weak_refs = 0;
115 static GQuark quark_toggle_refs = 0;
116 static GParamSpecPool *pspec_pool = NULL;
117 static GObjectNotifyContext property_notify_context = { 0, };
118 static gulong gobject_signals[LAST_SIGNAL] = { 0, };
119 G_LOCK_DEFINE_STATIC (construct_objects_lock);
120 static GSList *construct_objects = NULL;
121 static guint (*floating_flag_handler) (GObject*, gint) = object_floating_flag_handler;
123 /* --- functions --- */
124 #ifdef G_ENABLE_DEBUG
125 #define IF_DEBUG(debug_type) if (_g_type_debug_flags & G_TYPE_DEBUG_ ## debug_type)
126 G_LOCK_DEFINE_STATIC (debug_objects);
127 static volatile GObject *g_trap_object_ref = NULL;
128 static guint debug_objects_count = 0;
129 static GHashTable *debug_objects_ht = NULL;
131 debug_objects_foreach (gpointer key,
135 GObject *object = value;
137 g_message ("[%p] stale %s\tref_count=%u",
139 G_OBJECT_TYPE_NAME (object),
143 debug_objects_atexit (void)
147 G_LOCK (debug_objects);
148 g_message ("stale GObjects: %u", debug_objects_count);
149 g_hash_table_foreach (debug_objects_ht, debug_objects_foreach, NULL);
150 G_UNLOCK (debug_objects);
153 #endif /* G_ENABLE_DEBUG */
156 g_object_type_init (void)
158 static gboolean initialized = FALSE;
159 static const GTypeFundamentalInfo finfo = {
160 G_TYPE_FLAG_CLASSED | G_TYPE_FLAG_INSTANTIATABLE | G_TYPE_FLAG_DERIVABLE | G_TYPE_FLAG_DEEP_DERIVABLE,
162 static GTypeInfo info = {
163 sizeof (GObjectClass),
164 (GBaseInitFunc) g_object_base_class_init,
165 (GBaseFinalizeFunc) g_object_base_class_finalize,
166 (GClassInitFunc) g_object_do_class_init,
167 NULL /* class_destroy */,
168 NULL /* class_data */,
171 (GInstanceInitFunc) g_object_init,
172 NULL, /* value_table */
174 static const GTypeValueTable value_table = {
175 g_value_object_init, /* value_init */
176 g_value_object_free_value, /* value_free */
177 g_value_object_copy_value, /* value_copy */
178 g_value_object_peek_pointer, /* value_peek_pointer */
179 "p", /* collect_format */
180 g_value_object_collect_value, /* collect_value */
181 "p", /* lcopy_format */
182 g_value_object_lcopy_value, /* lcopy_value */
186 g_return_if_fail (initialized == FALSE);
191 info.value_table = &value_table;
192 type = g_type_register_fundamental (G_TYPE_OBJECT, g_intern_static_string ("GObject"), &info, &finfo, 0);
193 g_assert (type == G_TYPE_OBJECT);
194 g_value_register_transform_func (G_TYPE_OBJECT, G_TYPE_OBJECT, g_value_object_transform_value);
196 #ifdef G_ENABLE_DEBUG
199 debug_objects_ht = g_hash_table_new (g_direct_hash, NULL);
200 g_atexit (debug_objects_atexit);
202 #endif /* G_ENABLE_DEBUG */
206 g_object_base_class_init (GObjectClass *class)
208 GObjectClass *pclass = g_type_class_peek_parent (class);
210 /* reset instance specific fields and methods that don't get inherited */
211 class->construct_properties = pclass ? g_slist_copy (pclass->construct_properties) : NULL;
212 class->get_property = NULL;
213 class->set_property = NULL;
217 g_object_base_class_finalize (GObjectClass *class)
221 _g_signals_destroy (G_OBJECT_CLASS_TYPE (class));
223 g_slist_free (class->construct_properties);
224 class->construct_properties = NULL;
225 list = g_param_spec_pool_list_owned (pspec_pool, G_OBJECT_CLASS_TYPE (class));
226 for (node = list; node; node = node->next)
228 GParamSpec *pspec = node->data;
230 g_param_spec_pool_remove (pspec_pool, pspec);
231 PARAM_SPEC_SET_PARAM_ID (pspec, 0);
232 g_param_spec_unref (pspec);
238 g_object_notify_dispatcher (GObject *object,
242 G_OBJECT_GET_CLASS (object)->dispatch_properties_changed (object, n_pspecs, pspecs);
246 g_object_do_class_init (GObjectClass *class)
248 /* read the comment about typedef struct CArray; on why not to change this quark */
249 quark_closure_array = g_quark_from_static_string ("GObject-closure-array");
251 quark_weak_refs = g_quark_from_static_string ("GObject-weak-references");
252 quark_toggle_refs = g_quark_from_static_string ("GObject-toggle-references");
253 pspec_pool = g_param_spec_pool_new (TRUE);
254 property_notify_context.quark_notify_queue = g_quark_from_static_string ("GObject-notify-queue");
255 property_notify_context.dispatcher = g_object_notify_dispatcher;
257 class->constructor = g_object_constructor;
258 class->set_property = g_object_do_set_property;
259 class->get_property = g_object_do_get_property;
260 class->dispose = g_object_real_dispose;
261 class->finalize = g_object_finalize;
262 class->dispatch_properties_changed = g_object_dispatch_properties_changed;
263 class->notify = NULL;
265 gobject_signals[NOTIFY] =
266 g_signal_new (g_intern_static_string ("notify"),
267 G_TYPE_FROM_CLASS (class),
268 G_SIGNAL_RUN_FIRST | G_SIGNAL_NO_RECURSE | G_SIGNAL_DETAILED | G_SIGNAL_NO_HOOKS | G_SIGNAL_ACTION,
269 G_STRUCT_OFFSET (GObjectClass, notify),
271 g_cclosure_marshal_VOID__PARAM,
275 /* Install a check function that we'll use to verify that classes that
276 * implement an interface implement all properties for that interface
278 g_type_add_interface_check (NULL, object_interface_check_properties);
282 install_property_internal (GType g_type,
286 if (g_param_spec_pool_lookup (pspec_pool, pspec->name, g_type, FALSE))
288 g_warning ("When installing property: type `%s' already has a property named `%s'",
289 g_type_name (g_type),
294 g_param_spec_ref (pspec);
295 g_param_spec_sink (pspec);
296 PARAM_SPEC_SET_PARAM_ID (pspec, property_id);
297 g_param_spec_pool_insert (pspec_pool, pspec, g_type);
301 g_object_class_install_property (GObjectClass *class,
305 g_return_if_fail (G_IS_OBJECT_CLASS (class));
306 g_return_if_fail (G_IS_PARAM_SPEC (pspec));
307 if (pspec->flags & G_PARAM_WRITABLE)
308 g_return_if_fail (class->set_property != NULL);
309 if (pspec->flags & G_PARAM_READABLE)
310 g_return_if_fail (class->get_property != NULL);
311 g_return_if_fail (property_id > 0);
312 g_return_if_fail (PARAM_SPEC_PARAM_ID (pspec) == 0); /* paranoid */
313 if (pspec->flags & G_PARAM_CONSTRUCT)
314 g_return_if_fail ((pspec->flags & G_PARAM_CONSTRUCT_ONLY) == 0);
315 if (pspec->flags & (G_PARAM_CONSTRUCT | G_PARAM_CONSTRUCT_ONLY))
316 g_return_if_fail (pspec->flags & G_PARAM_WRITABLE);
318 install_property_internal (G_OBJECT_CLASS_TYPE (class), property_id, pspec);
320 if (pspec->flags & (G_PARAM_CONSTRUCT | G_PARAM_CONSTRUCT_ONLY))
321 class->construct_properties = g_slist_prepend (class->construct_properties, pspec);
323 /* for property overrides of construct poperties, we have to get rid
324 * of the overidden inherited construct property
326 pspec = g_param_spec_pool_lookup (pspec_pool, pspec->name, g_type_parent (G_OBJECT_CLASS_TYPE (class)), TRUE);
327 if (pspec && pspec->flags & (G_PARAM_CONSTRUCT | G_PARAM_CONSTRUCT_ONLY))
328 class->construct_properties = g_slist_remove (class->construct_properties, pspec);
332 g_object_interface_install_property (gpointer g_iface,
335 GTypeInterface *iface_class = g_iface;
337 g_return_if_fail (G_TYPE_IS_INTERFACE (iface_class->g_type));
338 g_return_if_fail (G_IS_PARAM_SPEC (pspec));
339 g_return_if_fail (!G_IS_PARAM_SPEC_OVERRIDE (pspec)); /* paranoid */
340 g_return_if_fail (PARAM_SPEC_PARAM_ID (pspec) == 0); /* paranoid */
342 install_property_internal (iface_class->g_type, 0, pspec);
346 g_object_class_find_property (GObjectClass *class,
347 const gchar *property_name)
350 GParamSpec *redirect;
352 g_return_val_if_fail (G_IS_OBJECT_CLASS (class), NULL);
353 g_return_val_if_fail (property_name != NULL, NULL);
355 pspec = g_param_spec_pool_lookup (pspec_pool,
357 G_OBJECT_CLASS_TYPE (class),
361 redirect = g_param_spec_get_redirect_target (pspec);
372 g_object_interface_find_property (gpointer g_iface,
373 const gchar *property_name)
375 GTypeInterface *iface_class = g_iface;
377 g_return_val_if_fail (G_TYPE_IS_INTERFACE (iface_class->g_type), NULL);
378 g_return_val_if_fail (property_name != NULL, NULL);
380 return g_param_spec_pool_lookup (pspec_pool,
387 g_object_class_override_property (GObjectClass *oclass,
391 GParamSpec *overridden = NULL;
395 g_return_if_fail (G_IS_OBJECT_CLASS (oclass));
396 g_return_if_fail (property_id > 0);
397 g_return_if_fail (name != NULL);
399 /* Find the overridden property; first check parent types
401 parent_type = g_type_parent (G_OBJECT_CLASS_TYPE (oclass));
402 if (parent_type != G_TYPE_NONE)
403 overridden = g_param_spec_pool_lookup (pspec_pool,
412 /* Now check interfaces
414 ifaces = g_type_interfaces (G_OBJECT_CLASS_TYPE (oclass), &n_ifaces);
415 while (n_ifaces-- && !overridden)
417 overridden = g_param_spec_pool_lookup (pspec_pool,
428 g_warning ("%s: Can't find property to override for '%s::%s'",
429 G_STRFUNC, G_OBJECT_CLASS_NAME (oclass), name);
433 new = g_param_spec_override (name, overridden);
434 g_object_class_install_property (oclass, property_id, new);
437 GParamSpec** /* free result */
438 g_object_class_list_properties (GObjectClass *class,
439 guint *n_properties_p)
444 g_return_val_if_fail (G_IS_OBJECT_CLASS (class), NULL);
446 pspecs = g_param_spec_pool_list (pspec_pool,
447 G_OBJECT_CLASS_TYPE (class),
455 GParamSpec** /* free result */
456 g_object_interface_list_properties (gpointer g_iface,
457 guint *n_properties_p)
459 GTypeInterface *iface_class = g_iface;
463 g_return_val_if_fail (G_TYPE_IS_INTERFACE (iface_class->g_type), NULL);
465 pspecs = g_param_spec_pool_list (pspec_pool,
475 g_object_init (GObject *object)
477 object->ref_count = 1;
478 g_datalist_init (&object->qdata);
480 /* freeze object's notification queue, g_object_newv() preserves pairedness */
481 g_object_notify_queue_freeze (object, &property_notify_context);
483 /* allow construct-only properties to be set */
484 G_LOCK (construct_objects_lock);
485 construct_objects = g_slist_prepend (construct_objects, object);
486 G_UNLOCK (construct_objects_lock);
488 #ifdef G_ENABLE_DEBUG
491 G_LOCK (debug_objects);
492 debug_objects_count++;
493 g_hash_table_insert (debug_objects_ht, object, object);
494 G_UNLOCK (debug_objects);
496 #endif /* G_ENABLE_DEBUG */
500 g_object_do_set_property (GObject *object,
508 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
514 g_object_do_get_property (GObject *object,
522 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
528 g_object_real_dispose (GObject *object)
530 g_signal_handlers_destroy (object);
531 g_datalist_id_set_data (&object->qdata, quark_closure_array, NULL);
532 g_datalist_id_set_data (&object->qdata, quark_weak_refs, NULL);
536 g_object_finalize (GObject *object)
538 g_datalist_clear (&object->qdata);
540 #ifdef G_ENABLE_DEBUG
543 G_LOCK (debug_objects);
544 g_assert (g_hash_table_lookup (debug_objects_ht, object) == object);
545 g_hash_table_remove (debug_objects_ht, object);
546 debug_objects_count--;
547 G_UNLOCK (debug_objects);
549 #endif /* G_ENABLE_DEBUG */
554 g_object_dispatch_properties_changed (GObject *object,
560 for (i = 0; i < n_pspecs; i++)
561 g_signal_emit (object, gobject_signals[NOTIFY], g_quark_from_string (pspecs[i]->name), pspecs[i]);
565 g_object_run_dispose (GObject *object)
567 g_return_if_fail (G_IS_OBJECT (object));
568 g_return_if_fail (object->ref_count > 0);
570 g_object_ref (object);
571 G_OBJECT_GET_CLASS (object)->dispose (object);
572 g_object_unref (object);
576 g_object_freeze_notify (GObject *object)
578 g_return_if_fail (G_IS_OBJECT (object));
580 if (g_atomic_int_get (&object->ref_count) == 0)
583 g_object_ref (object);
584 g_object_notify_queue_freeze (object, &property_notify_context);
585 g_object_unref (object);
589 g_object_notify (GObject *object,
590 const gchar *property_name)
594 g_return_if_fail (G_IS_OBJECT (object));
595 g_return_if_fail (property_name != NULL);
596 if (g_atomic_int_get (&object->ref_count) == 0)
599 g_object_ref (object);
600 /* We don't need to get the redirect target
601 * (by, e.g. calling g_object_class_find_property())
602 * because g_object_notify_queue_add() does that
604 pspec = g_param_spec_pool_lookup (pspec_pool,
606 G_OBJECT_TYPE (object),
610 g_warning ("%s: object class `%s' has no property named `%s'",
612 G_OBJECT_TYPE_NAME (object),
616 GObjectNotifyQueue *nqueue;
618 nqueue = g_object_notify_queue_freeze (object, &property_notify_context);
619 g_object_notify_queue_add (object, nqueue, pspec);
620 g_object_notify_queue_thaw (object, nqueue);
622 g_object_unref (object);
626 g_object_thaw_notify (GObject *object)
628 GObjectNotifyQueue *nqueue;
630 g_return_if_fail (G_IS_OBJECT (object));
631 if (g_atomic_int_get (&object->ref_count) == 0)
634 g_object_ref (object);
635 nqueue = g_object_notify_queue_from_object (object, &property_notify_context);
636 if (!nqueue || !nqueue->freeze_count)
637 g_warning ("%s: property-changed notification for %s(%p) is not frozen",
638 G_STRFUNC, G_OBJECT_TYPE_NAME (object), object);
640 g_object_notify_queue_thaw (object, nqueue);
641 g_object_unref (object);
645 object_get_property (GObject *object,
649 GObjectClass *class = g_type_class_peek (pspec->owner_type);
650 guint param_id = PARAM_SPEC_PARAM_ID (pspec);
651 GParamSpec *redirect;
653 redirect = g_param_spec_get_redirect_target (pspec);
657 class->get_property (object, param_id, value, pspec);
661 object_set_property (GObject *object,
664 GObjectNotifyQueue *nqueue)
666 GValue tmp_value = { 0, };
667 GObjectClass *class = g_type_class_peek (pspec->owner_type);
668 guint param_id = PARAM_SPEC_PARAM_ID (pspec);
669 GParamSpec *redirect;
671 redirect = g_param_spec_get_redirect_target (pspec);
675 /* provide a copy to work from, convert (if necessary) and validate */
676 g_value_init (&tmp_value, G_PARAM_SPEC_VALUE_TYPE (pspec));
677 if (!g_value_transform (value, &tmp_value))
678 g_warning ("unable to set property `%s' of type `%s' from value of type `%s'",
680 g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)),
681 G_VALUE_TYPE_NAME (value));
682 else if (g_param_value_validate (pspec, &tmp_value) && !(pspec->flags & G_PARAM_LAX_VALIDATION))
684 gchar *contents = g_strdup_value_contents (value);
686 g_warning ("value \"%s\" of type `%s' is invalid or out of range for property `%s' of type `%s'",
688 G_VALUE_TYPE_NAME (value),
690 g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)));
695 class->set_property (object, param_id, &tmp_value, pspec);
696 g_object_notify_queue_add (object, nqueue, pspec);
698 g_value_unset (&tmp_value);
702 object_interface_check_properties (gpointer func_data,
705 GTypeInterface *iface_class = g_iface;
706 GObjectClass *class = g_type_class_peek (iface_class->g_instance_type);
707 GType iface_type = iface_class->g_type;
711 if (!G_IS_OBJECT_CLASS (class))
714 pspecs = g_param_spec_pool_list (pspec_pool, iface_type, &n);
718 GParamSpec *class_pspec = g_param_spec_pool_lookup (pspec_pool,
720 G_OBJECT_CLASS_TYPE (class),
725 g_critical ("Object class %s doesn't implement property "
726 "'%s' from interface '%s'",
727 g_type_name (G_OBJECT_CLASS_TYPE (class)),
729 g_type_name (iface_type));
734 /* The implementation paramspec must have a less restrictive
735 * type than the interface parameter spec for set() and a
736 * more restrictive type for get(). We just require equality,
737 * rather than doing something more complicated checking
738 * the READABLE and WRITABLE flags. We also simplify here
739 * by only checking the value type, not the G_PARAM_SPEC_TYPE.
742 !g_type_is_a (G_PARAM_SPEC_VALUE_TYPE (pspecs[n]),
743 G_PARAM_SPEC_VALUE_TYPE (class_pspec)))
745 g_critical ("Property '%s' on class '%s' has type '%s' "
746 "which is different from the type '%s', "
747 "of the property on interface '%s'\n",
749 g_type_name (G_OBJECT_CLASS_TYPE (class)),
750 g_type_name (G_PARAM_SPEC_VALUE_TYPE (class_pspec)),
751 g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspecs[n])),
752 g_type_name (iface_type));
755 #define SUBSET(a,b,mask) (((a) & ~(b) & (mask)) == 0)
757 /* CONSTRUCT and CONSTRUCT_ONLY add restrictions.
758 * READABLE and WRITABLE remove restrictions. The implementation
759 * paramspec must have less restrictive flags.
762 (!SUBSET (class_pspec->flags,
764 G_PARAM_CONSTRUCT | G_PARAM_CONSTRUCT_ONLY) ||
765 !SUBSET (pspecs[n]->flags,
767 G_PARAM_READABLE | G_PARAM_WRITABLE)))
769 g_critical ("Flags for property '%s' on class '%s' "
770 "are not compatible with the property on"
773 g_type_name (G_OBJECT_CLASS_TYPE (class)),
774 g_type_name (iface_type));
783 g_object_new (GType object_type,
784 const gchar *first_property_name,
790 g_return_val_if_fail (G_TYPE_IS_OBJECT (object_type), NULL);
792 va_start (var_args, first_property_name);
793 object = g_object_new_valist (object_type, first_property_name, var_args);
800 object_in_construction (GObject *object)
802 gboolean in_construction;
803 G_LOCK (construct_objects_lock);
804 in_construction = g_slist_find (construct_objects, object) != NULL;
805 G_UNLOCK (construct_objects_lock);
806 return in_construction;
810 g_object_newv (GType object_type,
812 GParameter *parameters)
814 GObjectConstructParam *cparams, *oparams;
815 GObjectNotifyQueue *nqueue;
817 GObjectClass *class, *unref_class = NULL;
819 guint n_total_cparams = 0, n_cparams = 0, n_oparams = 0, n_cvalues;
824 g_return_val_if_fail (G_TYPE_IS_OBJECT (object_type), NULL);
826 class = g_type_class_peek_static (object_type);
828 class = unref_class = g_type_class_ref (object_type);
829 for (slist = class->construct_properties; slist; slist = slist->next)
831 clist = g_list_prepend (clist, slist->data);
832 n_total_cparams += 1;
835 /* collect parameters, sort into construction and normal ones */
836 oparams = g_new (GObjectConstructParam, n_parameters);
837 cparams = g_new (GObjectConstructParam, n_total_cparams);
838 for (i = 0; i < n_parameters; i++)
840 GValue *value = ¶meters[i].value;
841 GParamSpec *pspec = g_param_spec_pool_lookup (pspec_pool,
847 g_warning ("%s: object class `%s' has no property named `%s'",
849 g_type_name (object_type),
853 if (!(pspec->flags & G_PARAM_WRITABLE))
855 g_warning ("%s: property `%s' of object class `%s' is not writable",
858 g_type_name (object_type));
861 if (pspec->flags & (G_PARAM_CONSTRUCT | G_PARAM_CONSTRUCT_ONLY))
863 GList *list = g_list_find (clist, pspec);
867 g_warning ("%s: construct property \"%s\" for object `%s' can't be set twice",
868 G_STRFUNC, pspec->name, g_type_name (object_type));
871 cparams[n_cparams].pspec = pspec;
872 cparams[n_cparams].value = value;
877 list->prev->next = list->next;
879 list->next->prev = list->prev;
880 g_list_free_1 (list);
884 oparams[n_oparams].pspec = pspec;
885 oparams[n_oparams].value = value;
890 /* set remaining construction properties to default values */
891 n_cvalues = n_total_cparams - n_cparams;
892 cvalues = g_new (GValue, n_cvalues);
895 GList *tmp = clist->next;
896 GParamSpec *pspec = clist->data;
897 GValue *value = cvalues + n_total_cparams - n_cparams - 1;
900 g_value_init (value, G_PARAM_SPEC_VALUE_TYPE (pspec));
901 g_param_value_set_default (pspec, value);
903 cparams[n_cparams].pspec = pspec;
904 cparams[n_cparams].value = value;
907 g_list_free_1 (clist);
911 /* construct object from construction parameters */
912 object = class->constructor (object_type, n_total_cparams, cparams);
913 G_LOCK (construct_objects_lock);
914 construct_objects = g_slist_remove (construct_objects, object);
915 G_UNLOCK (construct_objects_lock);
917 /* free construction values */
920 g_value_unset (cvalues + n_cvalues);
923 /* release g_object_init() notification queue freeze_count */
924 nqueue = g_object_notify_queue_freeze (object, &property_notify_context);
925 g_object_notify_queue_thaw (object, nqueue);
927 /* set remaining properties */
928 for (i = 0; i < n_oparams; i++)
929 object_set_property (object, oparams[i].pspec, oparams[i].value, nqueue);
933 g_type_class_unref (unref_class);
935 /* release our own freeze count and handle notifications */
936 g_object_notify_queue_thaw (object, nqueue);
942 g_object_new_valist (GType object_type,
943 const gchar *first_property_name,
950 guint n_params = 0, n_alloced_params = 16;
952 g_return_val_if_fail (G_TYPE_IS_OBJECT (object_type), NULL);
954 if (!first_property_name)
955 return g_object_newv (object_type, 0, NULL);
957 class = g_type_class_ref (object_type);
959 params = g_new (GParameter, n_alloced_params);
960 name = first_property_name;
964 GParamSpec *pspec = g_param_spec_pool_lookup (pspec_pool,
970 g_warning ("%s: object class `%s' has no property named `%s'",
972 g_type_name (object_type),
976 if (n_params >= n_alloced_params)
978 n_alloced_params += 16;
979 params = g_renew (GParameter, params, n_alloced_params);
981 params[n_params].name = name;
982 params[n_params].value.g_type = 0;
983 g_value_init (¶ms[n_params].value, G_PARAM_SPEC_VALUE_TYPE (pspec));
984 G_VALUE_COLLECT (¶ms[n_params].value, var_args, 0, &error);
987 g_warning ("%s: %s", G_STRFUNC, error);
989 g_value_unset (¶ms[n_params].value);
993 name = va_arg (var_args, gchar*);
996 object = g_object_newv (object_type, n_params, params);
999 g_value_unset (¶ms[n_params].value);
1002 g_type_class_unref (class);
1008 g_object_constructor (GType type,
1009 guint n_construct_properties,
1010 GObjectConstructParam *construct_params)
1015 object = (GObject*) g_type_create_instance (type);
1017 /* set construction parameters */
1018 if (n_construct_properties)
1020 GObjectNotifyQueue *nqueue = g_object_notify_queue_freeze (object, &property_notify_context);
1022 /* set construct properties */
1023 while (n_construct_properties--)
1025 GValue *value = construct_params->value;
1026 GParamSpec *pspec = construct_params->pspec;
1029 object_set_property (object, pspec, value, nqueue);
1031 g_object_notify_queue_thaw (object, nqueue);
1032 /* the notification queue is still frozen from g_object_init(), so
1033 * we don't need to handle it here, g_object_newv() takes
1042 g_object_set_valist (GObject *object,
1043 const gchar *first_property_name,
1046 GObjectNotifyQueue *nqueue;
1049 g_return_if_fail (G_IS_OBJECT (object));
1051 g_object_ref (object);
1052 nqueue = g_object_notify_queue_freeze (object, &property_notify_context);
1054 name = first_property_name;
1057 GValue value = { 0, };
1059 gchar *error = NULL;
1061 pspec = g_param_spec_pool_lookup (pspec_pool,
1063 G_OBJECT_TYPE (object),
1067 g_warning ("%s: object class `%s' has no property named `%s'",
1069 G_OBJECT_TYPE_NAME (object),
1073 if (!(pspec->flags & G_PARAM_WRITABLE))
1075 g_warning ("%s: property `%s' of object class `%s' is not writable",
1078 G_OBJECT_TYPE_NAME (object));
1081 if ((pspec->flags & G_PARAM_CONSTRUCT_ONLY) && !object_in_construction (object))
1083 g_warning ("%s: construct property \"%s\" for object `%s' can't be set after construction",
1084 G_STRFUNC, pspec->name, G_OBJECT_TYPE_NAME (object));
1088 g_value_init (&value, G_PARAM_SPEC_VALUE_TYPE (pspec));
1090 G_VALUE_COLLECT (&value, var_args, 0, &error);
1093 g_warning ("%s: %s", G_STRFUNC, error);
1095 g_value_unset (&value);
1099 object_set_property (object, pspec, &value, nqueue);
1100 g_value_unset (&value);
1102 name = va_arg (var_args, gchar*);
1105 g_object_notify_queue_thaw (object, nqueue);
1106 g_object_unref (object);
1110 g_object_get_valist (GObject *object,
1111 const gchar *first_property_name,
1116 g_return_if_fail (G_IS_OBJECT (object));
1118 g_object_ref (object);
1120 name = first_property_name;
1124 GValue value = { 0, };
1128 pspec = g_param_spec_pool_lookup (pspec_pool,
1130 G_OBJECT_TYPE (object),
1134 g_warning ("%s: object class `%s' has no property named `%s'",
1136 G_OBJECT_TYPE_NAME (object),
1140 if (!(pspec->flags & G_PARAM_READABLE))
1142 g_warning ("%s: property `%s' of object class `%s' is not readable",
1145 G_OBJECT_TYPE_NAME (object));
1149 g_value_init (&value, G_PARAM_SPEC_VALUE_TYPE (pspec));
1151 object_get_property (object, pspec, &value);
1153 G_VALUE_LCOPY (&value, var_args, 0, &error);
1156 g_warning ("%s: %s", G_STRFUNC, error);
1158 g_value_unset (&value);
1162 g_value_unset (&value);
1164 name = va_arg (var_args, gchar*);
1167 g_object_unref (object);
1171 g_object_set (gpointer _object,
1172 const gchar *first_property_name,
1175 GObject *object = _object;
1178 g_return_if_fail (G_IS_OBJECT (object));
1180 va_start (var_args, first_property_name);
1181 g_object_set_valist (object, first_property_name, var_args);
1186 g_object_get (gpointer _object,
1187 const gchar *first_property_name,
1190 GObject *object = _object;
1193 g_return_if_fail (G_IS_OBJECT (object));
1195 va_start (var_args, first_property_name);
1196 g_object_get_valist (object, first_property_name, var_args);
1201 g_object_set_property (GObject *object,
1202 const gchar *property_name,
1203 const GValue *value)
1205 GObjectNotifyQueue *nqueue;
1208 g_return_if_fail (G_IS_OBJECT (object));
1209 g_return_if_fail (property_name != NULL);
1210 g_return_if_fail (G_IS_VALUE (value));
1212 g_object_ref (object);
1213 nqueue = g_object_notify_queue_freeze (object, &property_notify_context);
1215 pspec = g_param_spec_pool_lookup (pspec_pool,
1217 G_OBJECT_TYPE (object),
1220 g_warning ("%s: object class `%s' has no property named `%s'",
1222 G_OBJECT_TYPE_NAME (object),
1224 else if (!(pspec->flags & G_PARAM_WRITABLE))
1225 g_warning ("%s: property `%s' of object class `%s' is not writable",
1228 G_OBJECT_TYPE_NAME (object));
1229 else if ((pspec->flags & G_PARAM_CONSTRUCT_ONLY) && !object_in_construction (object))
1230 g_warning ("%s: construct property \"%s\" for object `%s' can't be set after construction",
1231 G_STRFUNC, pspec->name, G_OBJECT_TYPE_NAME (object));
1233 object_set_property (object, pspec, value, nqueue);
1235 g_object_notify_queue_thaw (object, nqueue);
1236 g_object_unref (object);
1240 g_object_get_property (GObject *object,
1241 const gchar *property_name,
1246 g_return_if_fail (G_IS_OBJECT (object));
1247 g_return_if_fail (property_name != NULL);
1248 g_return_if_fail (G_IS_VALUE (value));
1250 g_object_ref (object);
1252 pspec = g_param_spec_pool_lookup (pspec_pool,
1254 G_OBJECT_TYPE (object),
1257 g_warning ("%s: object class `%s' has no property named `%s'",
1259 G_OBJECT_TYPE_NAME (object),
1261 else if (!(pspec->flags & G_PARAM_READABLE))
1262 g_warning ("%s: property `%s' of object class `%s' is not readable",
1265 G_OBJECT_TYPE_NAME (object));
1268 GValue *prop_value, tmp_value = { 0, };
1270 /* auto-conversion of the callers value type
1272 if (G_VALUE_TYPE (value) == G_PARAM_SPEC_VALUE_TYPE (pspec))
1274 g_value_reset (value);
1277 else if (!g_value_type_transformable (G_PARAM_SPEC_VALUE_TYPE (pspec), G_VALUE_TYPE (value)))
1279 g_warning ("%s: can't retrieve property `%s' of type `%s' as value of type `%s'",
1280 G_STRFUNC, pspec->name,
1281 g_type_name (G_PARAM_SPEC_VALUE_TYPE (pspec)),
1282 G_VALUE_TYPE_NAME (value));
1283 g_object_unref (object);
1288 g_value_init (&tmp_value, G_PARAM_SPEC_VALUE_TYPE (pspec));
1289 prop_value = &tmp_value;
1291 object_get_property (object, pspec, prop_value);
1292 if (prop_value != value)
1294 g_value_transform (prop_value, value);
1295 g_value_unset (&tmp_value);
1299 g_object_unref (object);
1303 g_object_connect (gpointer _object,
1304 const gchar *signal_spec,
1307 GObject *object = _object;
1310 g_return_val_if_fail (G_IS_OBJECT (object), NULL);
1311 g_return_val_if_fail (object->ref_count > 0, object);
1313 va_start (var_args, signal_spec);
1316 GCallback callback = va_arg (var_args, GCallback);
1317 gpointer data = va_arg (var_args, gpointer);
1320 if (strncmp (signal_spec, "signal::", 8) == 0)
1321 sid = g_signal_connect_data (object, signal_spec + 8,
1322 callback, data, NULL,
1324 else if (strncmp (signal_spec, "object_signal::", 15) == 0 ||
1325 strncmp (signal_spec, "object-signal::", 15) == 0)
1326 sid = g_signal_connect_object (object, signal_spec + 15,
1329 else if (strncmp (signal_spec, "swapped_signal::", 16) == 0 ||
1330 strncmp (signal_spec, "swapped-signal::", 16) == 0)
1331 sid = g_signal_connect_data (object, signal_spec + 16,
1332 callback, data, NULL,
1334 else if (strncmp (signal_spec, "swapped_object_signal::", 23) == 0 ||
1335 strncmp (signal_spec, "swapped-object-signal::", 23) == 0)
1336 sid = g_signal_connect_object (object, signal_spec + 23,
1339 else if (strncmp (signal_spec, "signal_after::", 14) == 0 ||
1340 strncmp (signal_spec, "signal-after::", 14) == 0)
1341 sid = g_signal_connect_data (object, signal_spec + 14,
1342 callback, data, NULL,
1344 else if (strncmp (signal_spec, "object_signal_after::", 21) == 0 ||
1345 strncmp (signal_spec, "object-signal-after::", 21) == 0)
1346 sid = g_signal_connect_object (object, signal_spec + 21,
1349 else if (strncmp (signal_spec, "swapped_signal_after::", 22) == 0 ||
1350 strncmp (signal_spec, "swapped-signal-after::", 22) == 0)
1351 sid = g_signal_connect_data (object, signal_spec + 22,
1352 callback, data, NULL,
1353 G_CONNECT_SWAPPED | G_CONNECT_AFTER);
1354 else if (strncmp (signal_spec, "swapped_object_signal_after::", 29) == 0 ||
1355 strncmp (signal_spec, "swapped-object-signal-after::", 29) == 0)
1356 sid = g_signal_connect_object (object, signal_spec + 29,
1358 G_CONNECT_SWAPPED | G_CONNECT_AFTER);
1361 g_warning ("%s: invalid signal spec \"%s\"", G_STRFUNC, signal_spec);
1364 signal_spec = va_arg (var_args, gchar*);
1372 g_object_disconnect (gpointer _object,
1373 const gchar *signal_spec,
1376 GObject *object = _object;
1379 g_return_if_fail (G_IS_OBJECT (object));
1380 g_return_if_fail (object->ref_count > 0);
1382 va_start (var_args, signal_spec);
1385 GCallback callback = va_arg (var_args, GCallback);
1386 gpointer data = va_arg (var_args, gpointer);
1387 guint sid = 0, detail = 0, mask = 0;
1389 if (strncmp (signal_spec, "any_signal::", 12) == 0 ||
1390 strncmp (signal_spec, "any-signal::", 12) == 0)
1393 mask = G_SIGNAL_MATCH_ID | G_SIGNAL_MATCH_FUNC | G_SIGNAL_MATCH_DATA;
1395 else if (strcmp (signal_spec, "any_signal") == 0 ||
1396 strcmp (signal_spec, "any-signal") == 0)
1399 mask = G_SIGNAL_MATCH_FUNC | G_SIGNAL_MATCH_DATA;
1403 g_warning ("%s: invalid signal spec \"%s\"", G_STRFUNC, signal_spec);
1407 if ((mask & G_SIGNAL_MATCH_ID) &&
1408 !g_signal_parse_name (signal_spec, G_OBJECT_TYPE (object), &sid, &detail, FALSE))
1409 g_warning ("%s: invalid signal name \"%s\"", G_STRFUNC, signal_spec);
1410 else if (!g_signal_handlers_disconnect_matched (object, mask | (detail ? G_SIGNAL_MATCH_DETAIL : 0),
1412 NULL, (gpointer)callback, data))
1413 g_warning ("%s: signal handler %p(%p) is not connected", G_STRFUNC, callback, data);
1414 signal_spec = va_arg (var_args, gchar*);
1425 } weak_refs[1]; /* flexible array */
1429 weak_refs_notify (gpointer data)
1431 WeakRefStack *wstack = data;
1434 for (i = 0; i < wstack->n_weak_refs; i++)
1435 wstack->weak_refs[i].notify (wstack->weak_refs[i].data, wstack->object);
1440 g_object_weak_ref (GObject *object,
1444 WeakRefStack *wstack;
1447 g_return_if_fail (G_IS_OBJECT (object));
1448 g_return_if_fail (notify != NULL);
1449 g_return_if_fail (object->ref_count >= 1);
1451 wstack = g_datalist_id_remove_no_notify (&object->qdata, quark_weak_refs);
1454 i = wstack->n_weak_refs++;
1455 wstack = g_realloc (wstack, sizeof (*wstack) + sizeof (wstack->weak_refs[0]) * i);
1459 wstack = g_renew (WeakRefStack, NULL, 1);
1460 wstack->object = object;
1461 wstack->n_weak_refs = 1;
1464 wstack->weak_refs[i].notify = notify;
1465 wstack->weak_refs[i].data = data;
1466 g_datalist_id_set_data_full (&object->qdata, quark_weak_refs, wstack, weak_refs_notify);
1470 g_object_weak_unref (GObject *object,
1474 WeakRefStack *wstack;
1475 gboolean found_one = FALSE;
1477 g_return_if_fail (G_IS_OBJECT (object));
1478 g_return_if_fail (notify != NULL);
1480 wstack = g_datalist_id_get_data (&object->qdata, quark_weak_refs);
1485 for (i = 0; i < wstack->n_weak_refs; i++)
1486 if (wstack->weak_refs[i].notify == notify &&
1487 wstack->weak_refs[i].data == data)
1490 wstack->n_weak_refs -= 1;
1491 if (i != wstack->n_weak_refs)
1492 wstack->weak_refs[i] = wstack->weak_refs[wstack->n_weak_refs];
1498 g_warning ("%s: couldn't find weak ref %p(%p)", G_STRFUNC, notify, data);
1502 g_object_add_weak_pointer (GObject *object,
1503 gpointer *weak_pointer_location)
1505 g_return_if_fail (G_IS_OBJECT (object));
1506 g_return_if_fail (weak_pointer_location != NULL);
1508 g_object_weak_ref (object,
1509 (GWeakNotify) g_nullify_pointer,
1510 weak_pointer_location);
1514 g_object_remove_weak_pointer (GObject *object,
1515 gpointer *weak_pointer_location)
1517 g_return_if_fail (G_IS_OBJECT (object));
1518 g_return_if_fail (weak_pointer_location != NULL);
1520 g_object_weak_unref (object,
1521 (GWeakNotify) g_nullify_pointer,
1522 weak_pointer_location);
1526 object_floating_flag_handler (GObject *object,
1532 case +1: /* force floating if possible */
1534 oldvalue = g_atomic_pointer_get (&object->qdata);
1535 while (!g_atomic_pointer_compare_and_exchange ((void**) &object->qdata, oldvalue,
1536 (gpointer) ((gsize) oldvalue | OBJECT_FLOATING_FLAG)));
1537 return (gsize) oldvalue & OBJECT_FLOATING_FLAG;
1538 case -1: /* sink if possible */
1540 oldvalue = g_atomic_pointer_get (&object->qdata);
1541 while (!g_atomic_pointer_compare_and_exchange ((void**) &object->qdata, oldvalue,
1542 (gpointer) ((gsize) oldvalue & ~(gsize) OBJECT_FLOATING_FLAG)));
1543 return (gsize) oldvalue & OBJECT_FLOATING_FLAG;
1544 default: /* check floating */
1545 return 0 != ((gsize) g_atomic_pointer_get (&object->qdata) & OBJECT_FLOATING_FLAG);
1550 g_object_is_floating (gpointer _object)
1552 GObject *object = _object;
1553 g_return_val_if_fail (G_IS_OBJECT (object), FALSE);
1554 return floating_flag_handler (object, 0);
1558 g_object_ref_sink (gpointer _object)
1560 GObject *object = _object;
1561 gboolean was_floating;
1562 g_return_val_if_fail (G_IS_OBJECT (object), object);
1563 g_return_val_if_fail (object->ref_count >= 1, object);
1564 g_object_ref (object);
1565 was_floating = floating_flag_handler (object, -1);
1567 g_object_unref (object);
1572 g_object_force_floating (GObject *object)
1574 gboolean was_floating;
1575 g_return_if_fail (G_IS_OBJECT (object));
1576 g_return_if_fail (object->ref_count >= 1);
1578 was_floating = floating_flag_handler (object, +1);
1583 guint n_toggle_refs;
1585 GToggleNotify notify;
1587 } toggle_refs[1]; /* flexible array */
1591 toggle_refs_notify (GObject *object,
1592 gboolean is_last_ref)
1594 ToggleRefStack *tstack = g_datalist_id_get_data (&object->qdata, quark_toggle_refs);
1596 /* Reentrancy here is not as tricky as it seems, because a toggle reference
1597 * will only be notified when there is exactly one of them.
1599 g_assert (tstack->n_toggle_refs == 1);
1600 tstack->toggle_refs[0].notify (tstack->toggle_refs[0].data, tstack->object, is_last_ref);
1604 g_object_add_toggle_ref (GObject *object,
1605 GToggleNotify notify,
1608 ToggleRefStack *tstack;
1611 g_return_if_fail (G_IS_OBJECT (object));
1612 g_return_if_fail (notify != NULL);
1613 g_return_if_fail (object->ref_count >= 1);
1615 g_object_ref (object);
1617 tstack = g_datalist_id_remove_no_notify (&object->qdata, quark_toggle_refs);
1620 i = tstack->n_toggle_refs++;
1621 /* allocate i = tstate->n_toggle_refs - 1 positions beyond the 1 declared
1622 * in tstate->toggle_refs */
1623 tstack = g_realloc (tstack, sizeof (*tstack) + sizeof (tstack->toggle_refs[0]) * i);
1627 tstack = g_renew (ToggleRefStack, NULL, 1);
1628 tstack->object = object;
1629 tstack->n_toggle_refs = 1;
1633 /* Set a flag for fast lookup after adding the first toggle reference */
1634 if (tstack->n_toggle_refs == 1)
1635 g_datalist_set_flags (&object->qdata, OBJECT_HAS_TOGGLE_REF_FLAG);
1637 tstack->toggle_refs[i].notify = notify;
1638 tstack->toggle_refs[i].data = data;
1639 g_datalist_id_set_data_full (&object->qdata, quark_toggle_refs, tstack,
1640 (GDestroyNotify)g_free);
1644 g_object_remove_toggle_ref (GObject *object,
1645 GToggleNotify notify,
1648 ToggleRefStack *tstack;
1649 gboolean found_one = FALSE;
1651 g_return_if_fail (G_IS_OBJECT (object));
1652 g_return_if_fail (notify != NULL);
1654 tstack = g_datalist_id_get_data (&object->qdata, quark_toggle_refs);
1659 for (i = 0; i < tstack->n_toggle_refs; i++)
1660 if (tstack->toggle_refs[i].notify == notify &&
1661 tstack->toggle_refs[i].data == data)
1664 tstack->n_toggle_refs -= 1;
1665 if (i != tstack->n_toggle_refs)
1666 tstack->toggle_refs[i] = tstack->toggle_refs[tstack->n_toggle_refs];
1668 if (tstack->n_toggle_refs == 0)
1669 g_datalist_unset_flags (&object->qdata, OBJECT_HAS_TOGGLE_REF_FLAG);
1671 g_object_unref (object);
1678 g_warning ("%s: couldn't find toggle ref %p(%p)", G_STRFUNC, notify, data);
1682 g_object_ref (gpointer _object)
1684 GObject *object = _object;
1687 g_return_val_if_fail (G_IS_OBJECT (object), NULL);
1688 g_return_val_if_fail (object->ref_count > 0, NULL);
1690 #ifdef G_ENABLE_DEBUG
1691 if (g_trap_object_ref == object)
1693 #endif /* G_ENABLE_DEBUG */
1696 old_val = g_atomic_int_exchange_and_add (&object->ref_count, 1);
1698 if (old_val == 1 && OBJECT_HAS_TOGGLE_REF (object))
1699 toggle_refs_notify (object, FALSE);
1705 g_object_unref (gpointer _object)
1707 GObject *object = _object;
1711 g_return_if_fail (G_IS_OBJECT (object));
1712 g_return_if_fail (object->ref_count > 0);
1714 #ifdef G_ENABLE_DEBUG
1715 if (g_trap_object_ref == object)
1717 #endif /* G_ENABLE_DEBUG */
1719 /* here we want to atomically do: if (ref_count>1) { ref_count--; return; } */
1720 retry_atomic_decrement1:
1721 old_ref = g_atomic_int_get (&object->ref_count);
1724 if (!g_atomic_int_compare_and_exchange (&object->ref_count, old_ref, old_ref - 1))
1725 goto retry_atomic_decrement1;
1727 /* if we went from 2->1 we need to notify toggle refs if any */
1728 if (old_ref == 2 && OBJECT_HAS_TOGGLE_REF (object))
1729 toggle_refs_notify (object, TRUE);
1733 /* we are about tp remove the last reference */
1734 G_OBJECT_GET_CLASS (object)->dispose (object);
1736 /* may have been re-referenced meanwhile */
1737 retry_atomic_decrement2:
1738 old_ref = g_atomic_int_get (&object->ref_count);
1741 if (!g_atomic_int_compare_and_exchange (&object->ref_count, old_ref, old_ref - 1))
1742 goto retry_atomic_decrement2;
1744 /* if we went from 2->1 we need to notify toggle refs if any */
1745 if (old_ref == 2 && OBJECT_HAS_TOGGLE_REF (object))
1746 toggle_refs_notify (object, TRUE);
1751 /* we are still in the process of taking away the last ref */
1752 g_datalist_id_set_data (&object->qdata, quark_closure_array, NULL);
1753 g_signal_handlers_destroy (object);
1754 g_datalist_id_set_data (&object->qdata, quark_weak_refs, NULL);
1756 /* decrement the last reference */
1757 is_zero = g_atomic_int_dec_and_test (&object->ref_count);
1759 /* may have been re-referenced meanwhile */
1760 if (G_LIKELY (is_zero))
1762 G_OBJECT_GET_CLASS (object)->finalize (object);
1763 #ifdef G_ENABLE_DEBUG
1766 /* catch objects not chaining finalize handlers */
1767 G_LOCK (debug_objects);
1768 g_assert (g_hash_table_lookup (debug_objects_ht, object) == NULL);
1769 G_UNLOCK (debug_objects);
1771 #endif /* G_ENABLE_DEBUG */
1772 g_type_free_instance ((GTypeInstance*) object);
1778 g_object_get_qdata (GObject *object,
1781 g_return_val_if_fail (G_IS_OBJECT (object), NULL);
1783 return quark ? g_datalist_id_get_data (&object->qdata, quark) : NULL;
1787 g_object_set_qdata (GObject *object,
1791 g_return_if_fail (G_IS_OBJECT (object));
1792 g_return_if_fail (quark > 0);
1794 g_datalist_id_set_data (&object->qdata, quark, data);
1798 g_object_set_qdata_full (GObject *object,
1801 GDestroyNotify destroy)
1803 g_return_if_fail (G_IS_OBJECT (object));
1804 g_return_if_fail (quark > 0);
1806 g_datalist_id_set_data_full (&object->qdata, quark, data,
1807 data ? destroy : (GDestroyNotify) NULL);
1811 g_object_steal_qdata (GObject *object,
1814 g_return_val_if_fail (G_IS_OBJECT (object), NULL);
1815 g_return_val_if_fail (quark > 0, NULL);
1817 return g_datalist_id_remove_no_notify (&object->qdata, quark);
1821 g_object_get_data (GObject *object,
1826 g_return_val_if_fail (G_IS_OBJECT (object), NULL);
1827 g_return_val_if_fail (key != NULL, NULL);
1829 quark = g_quark_try_string (key);
1831 return quark ? g_datalist_id_get_data (&object->qdata, quark) : NULL;
1835 g_object_set_data (GObject *object,
1839 g_return_if_fail (G_IS_OBJECT (object));
1840 g_return_if_fail (key != NULL);
1842 g_datalist_id_set_data (&object->qdata, g_quark_from_string (key), data);
1846 g_object_set_data_full (GObject *object,
1849 GDestroyNotify destroy)
1851 g_return_if_fail (G_IS_OBJECT (object));
1852 g_return_if_fail (key != NULL);
1854 g_datalist_id_set_data_full (&object->qdata, g_quark_from_string (key), data,
1855 data ? destroy : (GDestroyNotify) NULL);
1859 g_object_steal_data (GObject *object,
1864 g_return_val_if_fail (G_IS_OBJECT (object), NULL);
1865 g_return_val_if_fail (key != NULL, NULL);
1867 quark = g_quark_try_string (key);
1869 return quark ? g_datalist_id_remove_no_notify (&object->qdata, quark) : NULL;
1873 g_value_object_init (GValue *value)
1875 value->data[0].v_pointer = NULL;
1879 g_value_object_free_value (GValue *value)
1881 if (value->data[0].v_pointer)
1882 g_object_unref (value->data[0].v_pointer);
1886 g_value_object_copy_value (const GValue *src_value,
1889 if (src_value->data[0].v_pointer)
1890 dest_value->data[0].v_pointer = g_object_ref (src_value->data[0].v_pointer);
1892 dest_value->data[0].v_pointer = NULL;
1896 g_value_object_transform_value (const GValue *src_value,
1899 if (src_value->data[0].v_pointer && g_type_is_a (G_OBJECT_TYPE (src_value->data[0].v_pointer), G_VALUE_TYPE (dest_value)))
1900 dest_value->data[0].v_pointer = g_object_ref (src_value->data[0].v_pointer);
1902 dest_value->data[0].v_pointer = NULL;
1906 g_value_object_peek_pointer (const GValue *value)
1908 return value->data[0].v_pointer;
1912 g_value_object_collect_value (GValue *value,
1913 guint n_collect_values,
1914 GTypeCValue *collect_values,
1915 guint collect_flags)
1917 if (collect_values[0].v_pointer)
1919 GObject *object = collect_values[0].v_pointer;
1921 if (object->g_type_instance.g_class == NULL)
1922 return g_strconcat ("invalid unclassed object pointer for value type `",
1923 G_VALUE_TYPE_NAME (value),
1926 else if (!g_value_type_compatible (G_OBJECT_TYPE (object), G_VALUE_TYPE (value)))
1927 return g_strconcat ("invalid object type `",
1928 G_OBJECT_TYPE_NAME (object),
1929 "' for value type `",
1930 G_VALUE_TYPE_NAME (value),
1933 /* never honour G_VALUE_NOCOPY_CONTENTS for ref-counted types */
1934 value->data[0].v_pointer = g_object_ref (object);
1937 value->data[0].v_pointer = NULL;
1943 g_value_object_lcopy_value (const GValue *value,
1944 guint n_collect_values,
1945 GTypeCValue *collect_values,
1946 guint collect_flags)
1948 GObject **object_p = collect_values[0].v_pointer;
1951 return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
1953 if (!value->data[0].v_pointer)
1955 else if (collect_flags & G_VALUE_NOCOPY_CONTENTS)
1956 *object_p = value->data[0].v_pointer;
1958 *object_p = g_object_ref (value->data[0].v_pointer);
1964 g_value_set_object (GValue *value,
1969 g_return_if_fail (G_VALUE_HOLDS_OBJECT (value));
1971 old = value->data[0].v_pointer;
1975 g_return_if_fail (G_IS_OBJECT (v_object));
1976 g_return_if_fail (g_value_type_compatible (G_OBJECT_TYPE (v_object), G_VALUE_TYPE (value)));
1978 value->data[0].v_pointer = v_object;
1979 g_object_ref (value->data[0].v_pointer);
1982 value->data[0].v_pointer = NULL;
1985 g_object_unref (old);
1989 g_value_set_object_take_ownership (GValue *value,
1992 g_value_take_object (value, v_object);
1996 g_value_take_object (GValue *value,
1999 g_return_if_fail (G_VALUE_HOLDS_OBJECT (value));
2001 if (value->data[0].v_pointer)
2003 g_object_unref (value->data[0].v_pointer);
2004 value->data[0].v_pointer = NULL;
2009 g_return_if_fail (G_IS_OBJECT (v_object));
2010 g_return_if_fail (g_value_type_compatible (G_OBJECT_TYPE (v_object), G_VALUE_TYPE (value)));
2012 value->data[0].v_pointer = v_object; /* we take over the reference count */
2017 g_value_get_object (const GValue *value)
2019 g_return_val_if_fail (G_VALUE_HOLDS_OBJECT (value), NULL);
2021 return value->data[0].v_pointer;
2025 g_value_dup_object (const GValue *value)
2027 g_return_val_if_fail (G_VALUE_HOLDS_OBJECT (value), NULL);
2029 return value->data[0].v_pointer ? g_object_ref (value->data[0].v_pointer) : NULL;
2033 g_signal_connect_object (gpointer instance,
2034 const gchar *detailed_signal,
2035 GCallback c_handler,
2037 GConnectFlags connect_flags)
2039 g_return_val_if_fail (G_TYPE_CHECK_INSTANCE (instance), 0);
2040 g_return_val_if_fail (detailed_signal != NULL, 0);
2041 g_return_val_if_fail (c_handler != NULL, 0);
2047 g_return_val_if_fail (G_IS_OBJECT (gobject), 0);
2049 closure = ((connect_flags & G_CONNECT_SWAPPED) ? g_cclosure_new_object_swap : g_cclosure_new_object) (c_handler, gobject);
2051 return g_signal_connect_closure (instance, detailed_signal, closure, connect_flags & G_CONNECT_AFTER);
2054 return g_signal_connect_data (instance, detailed_signal, c_handler, NULL, NULL, connect_flags);
2060 GClosure *closures[1]; /* flexible array */
2062 /* don't change this structure without supplying an accessor for
2063 * watched closures, e.g.:
2064 * GSList* g_object_list_watched_closures (GObject *object)
2067 * g_return_val_if_fail (G_IS_OBJECT (object), NULL);
2068 * carray = g_object_get_data (object, "GObject-closure-array");
2071 * GSList *slist = NULL;
2073 * for (i = 0; i < carray->n_closures; i++)
2074 * slist = g_slist_prepend (slist, carray->closures[i]);
2082 object_remove_closure (gpointer data,
2085 GObject *object = data;
2086 CArray *carray = g_object_get_qdata (object, quark_closure_array);
2089 for (i = 0; i < carray->n_closures; i++)
2090 if (carray->closures[i] == closure)
2092 carray->n_closures--;
2093 if (i < carray->n_closures)
2094 carray->closures[i] = carray->closures[carray->n_closures];
2097 g_assert_not_reached ();
2101 destroy_closure_array (gpointer data)
2103 CArray *carray = data;
2104 GObject *object = carray->object;
2105 guint i, n = carray->n_closures;
2107 for (i = 0; i < n; i++)
2109 GClosure *closure = carray->closures[i];
2111 /* removing object_remove_closure() upfront is probably faster than
2112 * letting it fiddle with quark_closure_array which is empty anyways
2114 g_closure_remove_invalidate_notifier (closure, object, object_remove_closure);
2115 g_closure_invalidate (closure);
2121 g_object_watch_closure (GObject *object,
2127 g_return_if_fail (G_IS_OBJECT (object));
2128 g_return_if_fail (closure != NULL);
2129 g_return_if_fail (closure->is_invalid == FALSE);
2130 g_return_if_fail (closure->in_marshal == FALSE);
2131 g_return_if_fail (object->ref_count > 0); /* this doesn't work on finalizing objects */
2133 g_closure_add_invalidate_notifier (closure, object, object_remove_closure);
2134 g_closure_add_marshal_guards (closure,
2135 object, (GClosureNotify) g_object_ref,
2136 object, (GClosureNotify) g_object_unref);
2137 carray = g_datalist_id_remove_no_notify (&object->qdata, quark_closure_array);
2140 carray = g_renew (CArray, NULL, 1);
2141 carray->object = object;
2142 carray->n_closures = 1;
2147 i = carray->n_closures++;
2148 carray = g_realloc (carray, sizeof (*carray) + sizeof (carray->closures[0]) * i);
2150 carray->closures[i] = closure;
2151 g_datalist_id_set_data_full (&object->qdata, quark_closure_array, carray, destroy_closure_array);
2155 g_closure_new_object (guint sizeof_closure,
2160 g_return_val_if_fail (G_IS_OBJECT (object), NULL);
2161 g_return_val_if_fail (object->ref_count > 0, NULL); /* this doesn't work on finalizing objects */
2163 closure = g_closure_new_simple (sizeof_closure, object);
2164 g_object_watch_closure (object, closure);
2170 g_cclosure_new_object (GCallback callback_func,
2175 g_return_val_if_fail (G_IS_OBJECT (object), NULL);
2176 g_return_val_if_fail (object->ref_count > 0, NULL); /* this doesn't work on finalizing objects */
2177 g_return_val_if_fail (callback_func != NULL, NULL);
2179 closure = g_cclosure_new (callback_func, object, NULL);
2180 g_object_watch_closure (object, closure);
2186 g_cclosure_new_object_swap (GCallback callback_func,
2191 g_return_val_if_fail (G_IS_OBJECT (object), NULL);
2192 g_return_val_if_fail (object->ref_count > 0, NULL); /* this doesn't work on finalizing objects */
2193 g_return_val_if_fail (callback_func != NULL, NULL);
2195 closure = g_cclosure_new_swap (callback_func, object, NULL);
2196 g_object_watch_closure (object, closure);
2202 g_object_compat_control (gsize what,
2208 case 1: /* floating base type */
2209 return G_TYPE_INITIALLY_UNOWNED;
2210 case 2: /* FIXME: remove this once GLib/Gtk+ break ABI again */
2211 floating_flag_handler = (guint(*)(GObject*,gint)) data;
2213 case 3: /* FIXME: remove this once GLib/Gtk+ break ABI again */
2215 *pp = floating_flag_handler;
2222 G_DEFINE_TYPE (GInitiallyUnowned, g_initially_unowned, G_TYPE_OBJECT);
2225 g_initially_unowned_init (GInitiallyUnowned *object)
2227 g_object_force_floating (object);
2231 g_initially_unowned_class_init (GInitiallyUnownedClass *klass)
2235 #define __G_OBJECT_C__
2236 #include "gobjectaliasdef.c"