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688a3e196b
The virtual function gets called in cogl_object_unref. Any definition of a CoglObject type can replace the default unref function by using COGL_OBJECT_DEFINE_WITH_CODE to directly manipulate the CoglObjectClass struct. The generated object constructors set the pointer to the default implementation. The default implementation is exported in the private header so that any overriding implementations can chain up to it. Reviewed-by: Robert Bragg <robert@linux.intel.com>
290 lines
7.4 KiB
C
290 lines
7.4 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2007,2008,2009,2010 Intel Corporation.
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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 Lesser 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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* Authors:
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* Robert Bragg <robert@linux.intel.com>
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <glib.h>
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#include <string.h>
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#include "cogl-util.h"
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#include "cogl-types.h"
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#include "cogl-object-private.h"
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void *
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cogl_object_ref (void *object)
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{
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CoglObject *obj = object;
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_COGL_RETURN_VAL_IF_FAIL (object != NULL, NULL);
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obj->ref_count++;
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return object;
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}
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CoglHandle
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cogl_handle_ref (CoglHandle handle)
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{
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return cogl_object_ref (handle);
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}
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void
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_cogl_object_default_unref (void *object)
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{
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CoglObject *obj = object;
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_COGL_RETURN_IF_FAIL (object != NULL);
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_COGL_RETURN_IF_FAIL (obj->ref_count > 0);
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if (--obj->ref_count < 1)
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{
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void (*free_func)(void *obj);
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if (obj->n_user_data_entries)
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{
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int i;
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int count = MIN (obj->n_user_data_entries,
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COGL_OBJECT_N_PRE_ALLOCATED_USER_DATA_ENTRIES);
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for (i = 0; i < count; i++)
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{
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CoglUserDataEntry *entry = &obj->user_data_entry[i];
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if (entry->destroy)
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entry->destroy (entry->user_data, obj);
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}
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if (obj->user_data_array != NULL)
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{
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for (i = 0; i < obj->user_data_array->len; i++)
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{
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CoglUserDataEntry *entry =
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&g_array_index (obj->user_data_array,
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CoglUserDataEntry, i);
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if (entry->destroy)
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entry->destroy (entry->user_data, obj);
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}
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g_array_free (obj->user_data_array, TRUE);
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}
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}
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COGL_OBJECT_DEBUG_FREE (obj);
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free_func = obj->klass->virt_free;
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free_func (obj);
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}
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}
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void
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cogl_object_unref (void *obj)
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{
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void (* unref_func) (void *) = ((CoglObject *) obj)->klass->virt_unref;
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unref_func (obj);
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}
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void
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cogl_handle_unref (CoglHandle handle)
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{
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cogl_object_unref (handle);
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}
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GType
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cogl_handle_get_type (void)
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{
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static GType our_type = 0;
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/* XXX: We are keeping the "CoglHandle" name for now incase it would
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* break bindings to change to "CoglObject" */
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if (G_UNLIKELY (our_type == 0))
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our_type = g_boxed_type_register_static (g_intern_static_string ("CoglHandle"),
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(GBoxedCopyFunc) cogl_object_ref,
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(GBoxedFreeFunc) cogl_object_unref);
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return our_type;
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}
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/* XXX: Unlike for cogl_object_get_user_data this code will return
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* an empty entry if available and no entry for the given key can be
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* found. */
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static CoglUserDataEntry *
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_cogl_object_find_entry (CoglObject *object, CoglUserDataKey *key)
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{
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CoglUserDataEntry *entry = NULL;
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int count;
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int i;
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count = MIN (object->n_user_data_entries,
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COGL_OBJECT_N_PRE_ALLOCATED_USER_DATA_ENTRIES);
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for (i = 0; i < count; i++)
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{
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CoglUserDataEntry *current = &object->user_data_entry[i];
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if (current->key == key)
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return current;
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if (current->user_data == NULL)
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entry = current;
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}
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if (G_UNLIKELY (object->user_data_array != NULL))
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{
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for (i = 0; i < object->user_data_array->len; i++)
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{
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CoglUserDataEntry *current =
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&g_array_index (object->user_data_array, CoglUserDataEntry, i);
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if (current->key == key)
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return current;
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if (current->user_data == NULL)
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entry = current;
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}
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}
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return entry;
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}
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void
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_cogl_object_set_user_data (CoglObject *object,
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CoglUserDataKey *key,
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void *user_data,
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CoglUserDataDestroyInternalCallback destroy)
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{
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CoglUserDataEntry new_entry;
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CoglUserDataEntry *entry;
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if (user_data)
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{
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new_entry.key = key;
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new_entry.user_data = user_data;
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new_entry.destroy = destroy;
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}
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else
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memset (&new_entry, 0, sizeof (new_entry));
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entry = _cogl_object_find_entry (object, key);
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if (entry)
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{
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if (G_LIKELY (entry->destroy))
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entry->destroy (entry->user_data, object);
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}
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else
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{
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if (G_LIKELY (object->n_user_data_entries <
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COGL_OBJECT_N_PRE_ALLOCATED_USER_DATA_ENTRIES))
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entry = &object->user_data_entry[object->n_user_data_entries++];
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else
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{
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if (G_UNLIKELY (object->user_data_array == NULL))
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{
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object->user_data_array =
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g_array_new (FALSE, FALSE, sizeof (CoglUserDataEntry));
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}
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g_array_set_size (object->user_data_array,
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object->user_data_array->len + 1);
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entry =
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&g_array_index (object->user_data_array, CoglUserDataEntry,
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object->user_data_array->len - 1);
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object->n_user_data_entries++;
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}
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}
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*entry = new_entry;
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}
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void
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cogl_object_set_user_data (CoglObject *object,
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CoglUserDataKey *key,
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void *user_data,
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CoglUserDataDestroyCallback destroy)
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{
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_cogl_object_set_user_data (object, key, user_data,
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(CoglUserDataDestroyInternalCallback)destroy);
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}
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void *
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cogl_object_get_user_data (CoglObject *object, CoglUserDataKey *key)
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{
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int count;
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int i;
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count = MIN (object->n_user_data_entries,
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COGL_OBJECT_N_PRE_ALLOCATED_USER_DATA_ENTRIES);
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for (i = 0; i < count; i++)
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{
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CoglUserDataEntry *entry = &object->user_data_entry[i];
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if (entry->key == key)
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return entry->user_data;
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}
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if (object->user_data_array != NULL)
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{
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for (i = 0; i < object->user_data_array->len; i++)
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{
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CoglUserDataEntry *entry =
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&g_array_index (object->user_data_array, CoglUserDataEntry, i);
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if (entry->key == key)
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return entry->user_data;
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}
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}
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return NULL;
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}
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void
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cogl_debug_object_foreach_type (CoglDebugObjectForeachTypeCallback func,
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void *user_data)
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{
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GHashTableIter iter;
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unsigned long *instance_count;
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CoglDebugObjectTypeInfo info;
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g_hash_table_iter_init (&iter, _cogl_debug_instances);
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while (g_hash_table_iter_next (&iter,
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(void *) &info.name,
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(void *) &instance_count))
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{
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info.instance_count = *instance_count;
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func (&info, user_data);
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}
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}
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static void
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print_instances_cb (const CoglDebugObjectTypeInfo *info,
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void *user_data)
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{
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g_print ("\t%s: %lu\n", info->name, info->instance_count);
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}
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void
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cogl_debug_object_print_instances (void)
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{
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g_print ("Cogl instances:\n");
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cogl_debug_object_foreach_type (print_instances_cb, NULL);
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}
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