* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*/
+#include "gobject.h"
/*
* MT safe
*/
-#include "gobject.h"
-
-
#include "gvaluecollector.h"
#include "gsignal.h"
#include "gparamspecs.h"
#include "gvaluetypes.h"
+#include "gobjectnotifyqueue.c"
#include <string.h>
/* --- macros --- */
-#define PARAM_SPEC_PARAM_ID(pspec) (GPOINTER_TO_UINT (g_param_spec_get_qdata ((pspec), quark_property_id)))
+#define PARAM_SPEC_PARAM_ID(pspec) ((pspec)->param_id)
+#define PARAM_SPEC_SET_PARAM_ID(pspec, id) ((pspec)->param_id = (id))
/* --- signals --- */
};
-/* --- typedefs --- */
-typedef struct _NotifyQueue NotifyQueue;
-
-
/* --- prototypes --- */
static void g_object_base_class_init (GObjectClass *class);
static void g_object_base_class_finalize (GObjectClass *class);
static void g_object_dispatch_properties_changed (GObject *object,
guint n_pspecs,
GParamSpec **pspecs);
-static void g_object_properties_changed (GObject *object,
- guint n_pspecs,
- GParamSpec **pspecs);
-static void g_object_notify_property_changed (GObject *object,
- GParamSpec *pspec);
-static inline NotifyQueue* object_freeze_notifies (GObject *object);
-static inline void object_queue_property (GObject *object,
- GParamSpec *pspec,
- NotifyQueue *nqueue);
-static inline void object_thaw_notifies (GObject *object,
- NotifyQueue *nqueue);
static inline void object_get_property (GObject *object,
GParamSpec *pspec,
GValue *value);
static inline void object_set_property (GObject *object,
GParamSpec *pspec,
const GValue *value,
- NotifyQueue *nqueue);
+ GObjectNotifyQueue *nqueue);
/* --- structures --- */
-struct _NotifyQueue
-{
- GSList *pspecs;
- guint n_pspecs;
- guint freeze_count;
-};
/* --- variables --- */
-static GQuark quark_notify_queue = 0;
-static GQuark quark_property_id = 0;
-static GQuark quark_closure_array = 0;
-static GParamSpecPool *pspec_pool = NULL;
-static gulong gobject_signals[LAST_SIGNAL] = { 0, };
+static GQuark quark_closure_array = 0;
+static GParamSpecPool *pspec_pool = NULL;
+static GObjectNotifyContext property_notify_context = { 0, };
+static gulong gobject_signals[LAST_SIGNAL] = { 0, };
/* --- functions --- */
GObjectClass *pclass = g_type_class_peek_parent (class);
/* reset instance specific fields and methods that don't get inherited */
- class->n_property_specs = 0;
- class->property_specs = NULL;
class->construct_properties = pclass ? g_slist_copy (pclass->construct_properties) : NULL;
class->get_property = NULL;
class->set_property = NULL;
static void
g_object_base_class_finalize (GObjectClass *class)
{
- guint i;
+ GList *list, *node;
g_message ("finallizing base class of %s", G_OBJECT_CLASS_NAME (class));
g_slist_free (class->construct_properties);
class->construct_properties = NULL;
- for (i = 0; i < class->n_property_specs; i++)
+ list = g_param_spec_pool_belongings (pspec_pool, G_OBJECT_CLASS_TYPE (class));
+ for (node = list; node; node = node->next)
{
- GParamSpec *pspec = class->property_specs[i];
+ GParamSpec *pspec = node->data;
g_param_spec_pool_remove (pspec_pool, pspec);
- g_param_spec_set_qdata (pspec, quark_property_id, NULL);
+ PARAM_SPEC_SET_PARAM_ID (pspec, 0);
g_param_spec_unref (pspec);
}
- class->n_property_specs = 0;
- g_free (class->property_specs);
- class->property_specs = NULL;
+ g_list_free (list);
+}
+
+static void
+g_object_notify_dispatcher (GObject *object,
+ guint n_pspecs,
+ GParamSpec **pspecs)
+{
+ G_OBJECT_GET_CLASS (object)->dispatch_properties_changed (object, n_pspecs, pspecs);
}
static void
g_object_do_class_init (GObjectClass *class)
{
- quark_notify_queue = g_quark_from_static_string ("GObject-notify-queue");
- quark_property_id = g_quark_from_static_string ("GObject-property-id");
quark_closure_array = g_quark_from_static_string ("GObject-closure-array");
pspec_pool = g_param_spec_pool_new (TRUE);
+ property_notify_context.quark_notify_queue = g_quark_from_static_string ("GObject-notify-queue");
+ property_notify_context.dispatcher = g_object_notify_dispatcher;
class->constructor = g_object_constructor;
class->set_property = g_object_do_set_property;
class->shutdown = g_object_shutdown;
class->finalize = g_object_finalize;
class->dispatch_properties_changed = g_object_dispatch_properties_changed;
- class->properties_changed = g_object_properties_changed;
- class->notify = g_object_notify_property_changed;
+ class->notify = NULL;
- gobject_signals[PROPERTIES_CHANGED] =
- g_signal_newc ("properties_changed",
- G_TYPE_FROM_CLASS (class),
- G_SIGNAL_RUN_FIRST | G_SIGNAL_NO_RECURSE,
- G_STRUCT_OFFSET (GObjectClass, properties_changed),
- NULL, NULL,
- g_cclosure_marshal_VOID__UINT_POINTER,
- G_TYPE_NONE,
- 2, G_TYPE_UINT, G_TYPE_POINTER);
gobject_signals[NOTIFY] =
g_signal_newc ("notify",
G_TYPE_FROM_CLASS (class),
guint property_id,
GParamSpec *pspec)
{
- guint i;
-
g_return_if_fail (G_IS_OBJECT_CLASS (class));
g_return_if_fail (G_IS_PARAM_SPEC (pspec));
if (pspec->flags & G_PARAM_WRITABLE)
if (pspec->flags & (G_PARAM_CONSTRUCT | G_PARAM_CONSTRUCT_ONLY))
g_return_if_fail (pspec->flags & G_PARAM_WRITABLE);
- /* expensive paranoia checks ;( */
- for (i = 0; i < class->n_property_specs; i++)
- if (PARAM_SPEC_PARAM_ID (class->property_specs[i]) == property_id)
- {
- g_warning (G_STRLOC ": class `%s' already contains a property `%s' with id %u, "
- "cannot install property `%s'",
- G_OBJECT_CLASS_NAME (class),
- class->property_specs[i]->name,
- property_id,
- pspec->name);
- return;
- }
if (g_param_spec_pool_lookup (pspec_pool, pspec->name, G_OBJECT_CLASS_TYPE (class), FALSE))
{
g_warning (G_STRLOC ": class `%s' already contains a property named `%s'",
g_param_spec_ref (pspec);
g_param_spec_sink (pspec);
- g_param_spec_set_qdata (pspec, quark_property_id, GUINT_TO_POINTER (property_id));
+ PARAM_SPEC_SET_PARAM_ID (pspec, property_id);
g_param_spec_pool_insert (pspec_pool, pspec, G_OBJECT_CLASS_TYPE (class));
- i = class->n_property_specs++;
- class->property_specs = g_renew (GParamSpec*, class->property_specs, class->n_property_specs);
- class->property_specs[i] = pspec;
if (pspec->flags & (G_PARAM_CONSTRUCT | G_PARAM_CONSTRUCT_ONLY))
class->construct_properties = g_slist_prepend (class->construct_properties, pspec);
TRUE);
}
-static void
-free_notify_queue (gpointer data)
-{
- NotifyQueue *nqueue = data;
-
- g_slist_free (nqueue->pspecs);
- g_free (nqueue);
-}
-
-static inline NotifyQueue*
-object_freeze_notifies (GObject *object)
+GParamSpec** /* free result */
+g_object_class_list_properties (GObjectClass *class,
+ guint *n_properties_p)
{
- NotifyQueue *nqueue;
+ GParamSpec **pspecs;
+ guint n;
- nqueue = g_object_get_qdata (object, quark_notify_queue);
- if (!nqueue)
- {
- nqueue = g_new0 (NotifyQueue, 1);
- g_object_set_qdata_full (object, quark_notify_queue, nqueue, free_notify_queue);
- }
- nqueue->freeze_count++;
+ g_return_val_if_fail (G_IS_OBJECT_CLASS (class), NULL);
- return nqueue;
-}
+ pspecs = g_param_spec_pool_list (pspec_pool,
+ G_OBJECT_CLASS_TYPE (class),
+ &n);
+ if (n_properties_p)
+ *n_properties_p = n;
-static inline void
-object_queue_property (GObject *object,
- GParamSpec *pspec,
- NotifyQueue *nqueue)
-{
- if (pspec->flags & G_PARAM_READABLE)
- {
- /* we will dedup later */
- nqueue->pspecs = g_slist_prepend (nqueue->pspecs, pspec);
- nqueue->n_pspecs++;
- }
+ return pspecs;
}
static void
object->ref_count = 1;
g_datalist_init (&object->qdata);
- /* freeze object's notification queue, g_object_new_valist() takes care of that */
- object_freeze_notifies (object);
+ /* freeze object's notification queue, g_object_newv() preserves pairedness */
+ g_object_notify_queue_freeze (object, &property_notify_context);
#ifdef G_ENABLE_DEBUG
IF_DEBUG (OBJECTS)
#endif /* G_ENABLE_DEBUG */
}
-static inline void
-object_thaw_notifies (GObject *object,
- NotifyQueue *nqueue)
-{
- GParamSpec **pspecs;
- GSList *slist;
- guint n_pspecs = 0;
-
- nqueue->freeze_count--;
- if (nqueue->freeze_count)
- return;
- g_return_if_fail (object->ref_count > 0);
-
- pspecs = g_new (GParamSpec*, nqueue->n_pspecs);
- for (slist = nqueue->pspecs; slist; slist = slist->next)
- {
- GParamSpec *pspec = slist->data;
- gint i = 0;
-
- /* dedup, make pspecs in the list unique */
- redo_dedup_check:
- if (pspecs[i] == pspec)
- continue;
- if (++i < n_pspecs)
- goto redo_dedup_check;
-
- pspecs[n_pspecs++] = pspec;
- }
- g_object_set_qdata (object, quark_notify_queue, NULL);
-
- if (n_pspecs)
- G_OBJECT_GET_CLASS (object)->dispatch_properties_changed (object, n_pspecs, pspecs);
-
- g_free (pspecs);
-}
-
static void
g_object_dispatch_properties_changed (GObject *object,
guint n_pspecs,
GParamSpec **pspecs)
{
- g_signal_emit (object, gobject_signals[PROPERTIES_CHANGED], 0, n_pspecs, pspecs);
-}
-
-static void
-g_object_properties_changed (GObject *object,
- guint n_pspecs,
- GParamSpec **pspecs)
-{
guint i;
for (i = 0; i < n_pspecs; i++)
g_signal_emit (object, gobject_signals[NOTIFY], g_quark_from_string (pspecs[i]->name), pspecs[i]);
}
-static void
-g_object_notify_property_changed (GObject *object,
- GParamSpec *pspec)
-{
- if (0) /* FIXME */
- g_message ("NOTIFICATION: property `%s' changed on object `%s'",
- pspec->name,
- G_OBJECT_TYPE_NAME (object));
-}
-
void
g_object_freeze_notify (GObject *object)
{
return;
g_object_ref (object);
- object_freeze_notifies (object);
+ g_object_notify_queue_freeze (object, &property_notify_context);
g_object_unref (object);
}
property_name);
else
{
- NotifyQueue *nqueue = object_freeze_notifies (object);
+ GObjectNotifyQueue *nqueue = g_object_notify_queue_freeze (object, &property_notify_context);
- object_queue_property (object, pspec, nqueue);
- object_thaw_notifies (object, nqueue);
+ g_object_notify_queue_add (object, nqueue, pspec);
+ g_object_notify_queue_thaw (object, nqueue);
}
g_object_unref (object);
}
void
g_object_thaw_notify (GObject *object)
{
- NotifyQueue *nqueue;
+ GObjectNotifyQueue *nqueue;
g_return_if_fail (G_IS_OBJECT (object));
if (!object->ref_count)
return;
g_object_ref (object);
- nqueue = g_object_get_qdata (object, quark_notify_queue);
+ nqueue = g_object_notify_queue_from_object (object, &property_notify_context);
if (!nqueue || !nqueue->freeze_count)
g_warning (G_STRLOC ": property-changed notification for %s(%p) is not frozen",
G_OBJECT_TYPE_NAME (object), object);
else
- object_thaw_notifies (object, nqueue);
+ g_object_notify_queue_thaw (object, nqueue);
g_object_unref (object);
}
GParamSpec *pspec,
GValue *value)
{
- GObjectClass *class;
-
- class = g_type_class_peek (pspec->owner_type);
+ GObjectClass *class = g_type_class_peek (pspec->owner_type);
class->get_property (object, PARAM_SPEC_PARAM_ID (pspec), value, pspec);
}
static inline void
-object_set_property (GObject *object,
- GParamSpec *pspec,
- const GValue *value,
- NotifyQueue *nqueue)
+object_set_property (GObject *object,
+ GParamSpec *pspec,
+ const GValue *value,
+ GObjectNotifyQueue *nqueue)
{
GValue tmp_value = { 0, };
GObjectClass *class = g_type_class_peek (pspec->owner_type);
else
{
class->set_property (object, PARAM_SPEC_PARAM_ID (pspec), &tmp_value, pspec);
- object_queue_property (object, pspec, nqueue);
+ g_object_notify_queue_add (object, nqueue, pspec);
}
g_value_unset (&tmp_value);
}
}
gpointer
-g_object_new_valist (GType object_type,
- const gchar *first_property_name,
- va_list var_args)
+g_object_newv (GType object_type,
+ guint n_parameters,
+ GParameter *parameters)
{
- NotifyQueue *nqueue;
+ GObjectConstructParam *cparams, *oparams;
+ GObjectNotifyQueue *nqueue;
GObject *object;
GObjectClass *class;
- const gchar *name;
- GObjectConstructParam *cparams = NULL, *nparams = NULL;
- guint n_cparams = 0, n_nparams = 0;
- GSList *clist;
-
+ GSList *slist;
+ guint n_total_cparams = 0, n_cparams = 0, n_oparams = 0, n_cvalues;
+ GValue *cvalues;
+ GList *clist = NULL;
+ guint i;
+
g_return_val_if_fail (G_TYPE_IS_OBJECT (object_type), NULL);
class = g_type_class_ref (object_type);
- clist = g_slist_copy (class->construct_properties);
+ for (slist = class->construct_properties; slist; slist = slist->next)
+ {
+ clist = g_list_prepend (clist, slist->data);
+ n_total_cparams += 1;
+ }
/* collect parameters, sort into construction and normal ones */
- name = first_property_name;
- while (name)
+ oparams = g_new (GObjectConstructParam, n_parameters);
+ cparams = g_new (GObjectConstructParam, n_total_cparams);
+ for (i = 0; i < n_parameters; i++)
{
- GValue *value;
- GParamSpec *pspec;
- gchar *error = NULL;
-
- pspec = g_param_spec_pool_lookup (pspec_pool,
- name,
- object_type,
- TRUE);
+ GValue *value = ¶meters[i].value;
+ GParamSpec *pspec = g_param_spec_pool_lookup (pspec_pool,
+ parameters[i].name,
+ object_type,
+ TRUE);
if (!pspec)
{
g_warning ("%s: object class `%s' has no property named `%s'",
G_STRLOC,
g_type_name (object_type),
- name);
- break;
+ parameters[i].name);
+ continue;
}
if (!(pspec->flags & G_PARAM_WRITABLE))
{
G_STRLOC,
pspec->name,
g_type_name (object_type));
- break;
- }
-
- value = g_new (GValue, 1);
- value->g_type = 0;
- g_value_init (value, G_PARAM_SPEC_VALUE_TYPE (pspec));
- G_VALUE_COLLECT (value, var_args, 0, &error);
- if (error)
- {
- g_warning ("%s: %s", G_STRLOC, error);
- g_free (error);
-
- /* we purposely leak the value here, it might not be
- * in a sane state if an error condition occoured
- */
- break;
+ continue;
}
if (pspec->flags & (G_PARAM_CONSTRUCT | G_PARAM_CONSTRUCT_ONLY))
{
- guint i;
+ GList *list = g_list_find (clist, pspec);
- if (!n_cparams || n_cparams >= PREALLOC_CPARAMS)
- cparams = g_renew (GObjectConstructParam, cparams, MAX (n_cparams + 1, PREALLOC_CPARAMS));
+ if (!list)
+ {
+ g_warning (G_STRLOC ": construct property \"%s\" for object `%s' can't be set twice",
+ pspec->name, g_type_name (object_type));
+ continue;
+ }
cparams[n_cparams].pspec = pspec;
cparams[n_cparams].value = value;
- for (i = 0; i < n_cparams; i++) /* picky, aren't we? ;) */
- if (cparams[i].pspec == pspec)
- g_warning (G_STRLOC ": construct property \"%s\" for object `%s' is being set twice",
- pspec->name, g_type_name (object_type));
n_cparams++;
- clist = g_slist_remove (clist, pspec); /* FIXME: unique */
+ if (!list->prev)
+ clist = list->next;
+ else
+ list->prev->next = list->next;
+ if (list->next)
+ list->next->prev = list->prev;
+ g_list_free_1 (list);
}
else
{
- if (!n_nparams || n_nparams >= PREALLOC_CPARAMS)
- nparams = g_renew (GObjectConstructParam, nparams, MAX (n_nparams + 1, PREALLOC_CPARAMS));
- nparams[n_nparams].pspec = pspec;
- nparams[n_nparams].value = value;
- n_nparams++;
+ oparams[n_oparams].pspec = pspec;
+ oparams[n_oparams].value = value;
+ n_oparams++;
}
-
- name = va_arg (var_args, gchar*);
}
- /* construct object from construction parameters */
+ /* set remaining construction properties to default values */
+ n_cvalues = n_total_cparams - n_cparams;
+ cvalues = g_new (GValue, n_cvalues);
while (clist)
{
- GSList *tmp = clist->next;
+ GList *tmp = clist->next;
GParamSpec *pspec = clist->data;
- GValue *value = g_new (GValue, 1);
+ GValue *value = cvalues + n_total_cparams - n_cparams - 1;
value->g_type = 0;
g_value_init (value, G_PARAM_SPEC_VALUE_TYPE (pspec));
g_param_value_set_default (pspec, value);
- if (!n_cparams || n_cparams >= PREALLOC_CPARAMS)
- cparams = g_renew (GObjectConstructParam, cparams, MAX (n_cparams + 1, PREALLOC_CPARAMS));
cparams[n_cparams].pspec = pspec;
cparams[n_cparams].value = value;
n_cparams++;
- g_slist_free_1 (clist);
+ g_list_free_1 (clist);
clist = tmp;
}
- object = class->constructor (object_type, n_cparams, cparams);
+
+ /* construct object from construction parameters */
+ object = class->constructor (object_type, n_total_cparams, cparams);
/* free construction values */
- while (n_cparams--)
- {
- g_value_unset (cparams[n_cparams].value);
- g_free (cparams[n_cparams].value);
- }
g_free (cparams);
+ while (n_cvalues--)
+ g_value_unset (cvalues + n_cvalues);
+ g_free (cvalues);
/* release g_object_init() notification queue freeze_count */
- nqueue = object_freeze_notifies (object);
- nqueue->freeze_count--;
+ nqueue = g_object_notify_queue_freeze (object, &property_notify_context);
+ g_object_notify_queue_thaw (object, nqueue);
/* set remaining properties */
- cparams = nparams;
- while (n_nparams--)
+ for (i = 0; i < n_oparams; i++)
+ object_set_property (object, oparams[i].pspec, oparams[i].value, nqueue);
+ g_free (oparams);
+
+ g_type_class_unref (class);
+
+ /* release our own freeze count and handle notifications */
+ g_object_notify_queue_thaw (object, nqueue);
+
+ return object;
+}
+
+gpointer
+g_object_new_valist (GType object_type,
+ const gchar *first_property_name,
+ va_list var_args)
+{
+ GObjectClass *class;
+ GParameter *params;
+ const gchar *name;
+ GObject *object;
+ guint n_params = 0, n_alloced_params = 16;
+
+ g_return_val_if_fail (G_TYPE_IS_OBJECT (object_type), NULL);
+
+ if (!first_property_name)
+ return g_object_newv (object_type, 0, NULL);
+
+ class = g_type_class_ref (object_type);
+
+ params = g_new (GParameter, n_alloced_params);
+ name = first_property_name;
+ while (name)
{
- GValue *value = nparams->value;
- GParamSpec *pspec = nparams->pspec;
+ gchar *error = NULL;
+ GParamSpec *pspec = g_param_spec_pool_lookup (pspec_pool,
+ name,
+ object_type,
+ TRUE);
+ if (!pspec)
+ {
+ g_warning ("%s: object class `%s' has no property named `%s'",
+ G_STRLOC,
+ g_type_name (object_type),
+ name);
+ break;
+ }
+ if (n_params >= n_alloced_params)
+ {
+ n_alloced_params += 16;
+ params = g_renew (GParameter, params, n_alloced_params);
+ }
+ params[n_params].name = name;
+ params[n_params].value.g_type = 0;
+ g_value_init (¶ms[n_params].value, G_PARAM_SPEC_VALUE_TYPE (pspec));
+ G_VALUE_COLLECT (¶ms[n_params].value, var_args, 0, &error);
+ if (error)
+ {
+ g_warning ("%s: %s", G_STRLOC, error);
+ g_free (error);
- nparams++;
- object_set_property (object, pspec, value, nqueue);
- g_value_unset (value);
- g_free (value);
+ /* we purposely leak the value here, it might not be
+ * in a sane state if an error condition occoured
+ */
+ break;
+ }
+ n_params++;
+ name = va_arg (var_args, gchar*);
}
- g_free (cparams);
+
+ object = g_object_newv (object_type, n_params, params);
+
+ while (n_params--)
+ g_value_unset (¶ms[n_params].value);
+ g_free (params);
g_type_class_unref (class);
- /* release our own freeze count and handle notifications */
- object_thaw_notifies (object, nqueue);
-
return object;
}
/* set construction parameters */
if (n_construct_properties)
{
- NotifyQueue *nqueue = object_freeze_notifies (object);
+ GObjectNotifyQueue *nqueue = g_object_notify_queue_freeze (object, &property_notify_context);
/* set construct properties */
while (n_construct_properties--)
construct_params++;
object_set_property (object, pspec, value, nqueue);
}
- nqueue->freeze_count--;
+ g_object_notify_queue_thaw (object, nqueue);
/* the notification queue is still frozen from g_object_init(), so
- * we don't need to handle it here, g_object_new_valist() takes
+ * we don't need to handle it here, g_object_newv() takes
* care of that
*/
}
const gchar *first_property_name,
va_list var_args)
{
- NotifyQueue *nqueue;
+ GObjectNotifyQueue *nqueue;
const gchar *name;
g_return_if_fail (G_IS_OBJECT (object));
g_object_ref (object);
- nqueue = object_freeze_notifies (object);
+ nqueue = g_object_notify_queue_freeze (object, &property_notify_context);
name = first_property_name;
while (name)
name = va_arg (var_args, gchar*);
}
- object_thaw_notifies (object, nqueue);
+ g_object_notify_queue_thaw (object, nqueue);
g_object_unref (object);
}
const gchar *property_name,
const GValue *value)
{
- NotifyQueue *nqueue;
+ GObjectNotifyQueue *nqueue;
GParamSpec *pspec;
g_return_if_fail (G_IS_OBJECT (object));
g_return_if_fail (G_IS_VALUE (value));
g_object_ref (object);
- nqueue = object_freeze_notifies (object);
+ nqueue = g_object_notify_queue_freeze (object, &property_notify_context);
pspec = g_param_spec_pool_lookup (pspec_pool,
property_name,
else
object_set_property (object, pspec, value, nqueue);
- object_thaw_notifies (object, nqueue);
+ g_object_notify_queue_thaw (object, nqueue);
g_object_unref (object);
}
--- /dev/null
+/* GObject - GLib Type, Object, Parameter and Signal Library
+ * Copyright (C) 1998-1999, 2000-2001 Tim Janik and 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, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+#ifndef __G_NOTIFY_H__
+#define __G_NOTIFY_H__
+
+#include <gobject/gobject.h>
+
+G_BEGIN_DECLS
+
+
+/* --- typedefs --- */
+typedef struct _GObjectNotifyContext GObjectNotifyContext;
+typedef struct _GObjectNotifyQueue GObjectNotifyQueue;
+typedef void (*GObjectNotifyQueueDispatcher) (GObject *object,
+ guint n_pspecs,
+ GParamSpec **pspecs);
+
+
+/* --- structures --- */
+struct _GObjectNotifyContext
+{
+ GQuark quark_notify_queue;
+ GObjectNotifyQueueDispatcher dispatcher;
+ GTrashStack *nqueue_trash;
+};
+struct _GObjectNotifyQueue
+{
+ GObjectNotifyContext *context;
+ GSList *pspecs;
+ guint n_pspecs;
+ guint freeze_count;
+};
+
+
+/* --- functions --- */
+static void
+g_object_notify_queue_free (gpointer data)
+{
+ GObjectNotifyQueue *nqueue = data;
+
+ g_slist_free (nqueue->pspecs);
+ g_trash_stack_push (&nqueue->context->nqueue_trash, nqueue);
+}
+
+static inline GObjectNotifyQueue*
+g_object_notify_queue_freeze (GObject *object,
+ GObjectNotifyContext *context)
+{
+ GObjectNotifyQueue *nqueue;
+
+ nqueue = g_datalist_id_get_data (&object->qdata, context->quark_notify_queue);
+ if (!nqueue)
+ {
+ nqueue = g_trash_stack_pop (&context->nqueue_trash);
+ if (!nqueue)
+ {
+ guint i;
+
+ nqueue = g_new (GObjectNotifyQueue, 16);
+ for (i = 0; i < 15; i++)
+ g_trash_stack_push (&context->nqueue_trash, nqueue++);
+ }
+ memset (nqueue, 0, sizeof (*nqueue));
+ nqueue->context = context;
+ g_datalist_id_set_data_full (&object->qdata, context->quark_notify_queue,
+ nqueue, g_object_notify_queue_free);
+ }
+ nqueue->freeze_count++;
+
+ return nqueue;
+}
+
+static inline void
+g_object_notify_queue_thaw (GObject *object,
+ GObjectNotifyQueue *nqueue)
+{
+ GObjectNotifyContext *context = nqueue->context;
+ GParamSpec *pspecs_mem[16], **pspecs, **free_me = NULL;
+ GSList *slist;
+ guint n_pspecs = 0;
+
+ g_return_if_fail (nqueue->freeze_count > 0);
+
+ nqueue->freeze_count--;
+ if (nqueue->freeze_count)
+ return;
+ g_return_if_fail (object->ref_count > 0);
+
+ pspecs = nqueue->n_pspecs > 16 ? free_me = g_new (GParamSpec*, nqueue->n_pspecs) : pspecs_mem;
+ for (slist = nqueue->pspecs; slist; slist = slist->next)
+ {
+ GParamSpec *pspec = slist->data;
+ gint i = 0;
+
+ /* dedup, make pspecs in the list unique */
+ redo_dedup_check:
+ if (pspecs[i] == pspec)
+ continue;
+ if (++i < n_pspecs)
+ goto redo_dedup_check;
+
+ pspecs[n_pspecs++] = pspec;
+ }
+ g_datalist_id_set_data (&object->qdata, context->quark_notify_queue, NULL);
+
+ if (n_pspecs)
+ context->dispatcher (object, n_pspecs, pspecs);
+ g_free (free_me);
+}
+
+static inline void
+g_object_notify_queue_clear (GObject *object,
+ GObjectNotifyQueue *nqueue)
+{
+ g_return_if_fail (nqueue->freeze_count > 0);
+
+ g_slist_free (nqueue->pspecs);
+ nqueue->pspecs = NULL;
+ nqueue->n_pspecs = 0;
+}
+
+static inline void
+g_object_notify_queue_add (GObject *object,
+ GObjectNotifyQueue *nqueue,
+ GParamSpec *pspec)
+{
+ if (pspec->flags & G_PARAM_READABLE)
+ {
+ /* we do the deduping in _thaw */
+ nqueue->pspecs = g_slist_prepend (nqueue->pspecs, pspec);
+ nqueue->n_pspecs++;
+ }
+}
+
+static inline GObjectNotifyQueue*
+g_object_notify_queue_from_object (GObject *object,
+ GObjectNotifyContext *context)
+{
+ return g_datalist_id_get_data (&object->qdata, context->quark_notify_queue);
+}
+
+
+G_END_DECLS
+
+#endif /* __G_OBJECT_H__ */
projects / platform / upstream / glib.git / commitdiff