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b25035ad2d
Previously COGL_OBJECT_DEFINE would always define deprecated
cogl_$type_{ref,unref} functions even if the type is new or if the
type is entirely internal. An application would still find it
difficult to use these because they wouldn't be in the headers, but it
still looks bad that they are exported from the shared library. This
patch changes it so that the deprecated ref counting functions are
defined using a separate macro and only the types that have these
functions in the headers call this macro.
221 lines
10 KiB
C
221 lines
10 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) 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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#ifndef __COGL_OBJECT_PRIVATE_H
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#define __COGL_OBJECT_PRIVATE_H
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#include <glib.h>
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#include "cogl-types.h"
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#include "cogl-object.h"
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/* For compatability until all components have been converted */
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typedef struct _CoglObjectClass CoglHandleClass;
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typedef struct _CoglObject CoglHandleObject;
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typedef struct _CoglObjectClass
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{
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GQuark type;
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void *virt_free;
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} CoglObjectClass;
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#define COGL_OBJECT_N_PRE_ALLOCATED_USER_DATA_ENTRIES 2
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typedef struct
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{
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CoglUserDataKey *key;
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void *user_data;
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CoglUserDataDestroyCallback destroy;
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} CoglUserDataEntry;
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/* All Cogl objects inherit from this base object by adding a member:
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*
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* CoglObject _parent;
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*
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* at the top of its main structure. This structure is initialized
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* when you call _cogl_#type_name#_object_new (new_object);
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*/
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struct _CoglObject
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{
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unsigned int ref_count;
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CoglUserDataEntry user_data_entry[
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COGL_OBJECT_N_PRE_ALLOCATED_USER_DATA_ENTRIES];
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GArray *user_data_array;
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int n_user_data_entries;
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CoglObjectClass *klass;
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};
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/* Helper macro to encapsulate the common code for COGL reference
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counted objects */
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#ifdef COGL_OBJECT_DEBUG
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#define _COGL_OBJECT_DEBUG_NEW(type_name, obj) \
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COGL_NOTE (HANDLE, "COGL " G_STRINGIFY (type_name) " NEW %p %i", \
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(obj), (obj)->ref_count)
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#define _COGL_OBJECT_DEBUG_REF(type_name, object) G_STMT_START { \
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CoglObject *__obj = (CoglObject *)object; \
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COGL_NOTE (HANDLE, "COGL %s REF %p %i", \
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g_quark_to_string ((__obj)->klass->type), \
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(__obj), (__obj)->ref_count); } G_STMT_END
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#define _COGL_OBJECT_DEBUG_UNREF(type_name, object) G_STMT_START { \
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CoglObject *__obj = (CoglObject *)object; \
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COGL_NOTE (HANDLE, "COGL %s UNREF %p %i", \
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g_quark_to_string ((__obj)->klass->type), \
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(__obj), (__obj)->ref_count - 1); } G_STMT_END
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#define COGL_OBJECT_DEBUG_FREE(obj) \
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COGL_NOTE (HANDLE, "COGL %s FREE %p", \
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g_quark_to_string ((obj)->klass->type), (obj))
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#else /* !COGL_OBJECT_DEBUG */
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#define _COGL_OBJECT_DEBUG_NEW(type_name, obj)
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#define _COGL_OBJECT_DEBUG_REF(type_name, obj)
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#define _COGL_OBJECT_DEBUG_UNREF(type_name, obj)
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#define COGL_OBJECT_DEBUG_FREE(obj)
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#endif /* COGL_OBJECT_DEBUG */
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/* For temporary compatability */
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#define _COGL_HANDLE_DEBUG_NEW _COGL_OBJECT_DEBUG_NEW
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#define _COGL_HANDLE_DEBUG_REF _COGL_OBJECT_DEBUG_REF
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#define _COGL_HANDLE_DEBUG_UNREF _COGL_OBJECT_DEBUG_UNREF
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#define COGL_HANDLE_DEBUG_FREE COGL_OBJECT_DEBUG_FREE
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#define COGL_OBJECT_DEFINE_WITH_CODE(TypeName, type_name, code) \
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\
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static CoglObjectClass _cogl_##type_name##_class; \
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\
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GQuark \
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_cogl_object_##type_name##_get_type (void) \
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{ \
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static GQuark type = 0; \
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if (!type) \
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{ \
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type = g_quark_from_static_string ("Cogl"#TypeName); \
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{ code; } \
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} \
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return type; \
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} \
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\
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GQuark \
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_cogl_handle_##type_name##_get_type (void) \
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{ \
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return _cogl_object_##type_name##_get_type (); \
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} \
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\
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static Cogl##TypeName * \
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_cogl_##type_name##_object_new (Cogl##TypeName *new_obj) \
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{ \
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CoglObject *obj = (CoglObject *)&new_obj->_parent; \
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obj->ref_count = 1; \
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obj->n_user_data_entries = 0; \
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obj->user_data_array = NULL; \
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\
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obj->klass = &_cogl_##type_name##_class; \
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if (!obj->klass->type) \
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{ \
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obj->klass->type = _cogl_object_##type_name##_get_type ();\
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obj->klass->virt_free = _cogl_##type_name##_free; \
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} \
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\
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_COGL_OBJECT_DEBUG_NEW (TypeName, obj); \
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return new_obj; \
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} \
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\
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Cogl##TypeName * \
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_cogl_##type_name##_pointer_from_handle (CoglHandle handle) \
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{ \
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return handle; \
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} \
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\
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gboolean \
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cogl_is_##type_name (void *object) \
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{ \
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CoglObject *obj = object; \
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\
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if (object == NULL) \
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return FALSE; \
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\
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return (obj->klass->type == \
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_cogl_object_##type_name##_get_type ()); \
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}
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#define COGL_OBJECT_DEFINE_DEPRECATED_REF_COUNTING(type_name) \
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\
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void * G_GNUC_DEPRECATED \
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cogl_##type_name##_ref (void *object) \
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{ \
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if (!cogl_is_##type_name (object)) \
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return NULL; \
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\
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_COGL_OBJECT_DEBUG_REF (TypeName, object); \
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\
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cogl_handle_ref (object); \
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\
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return object; \
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} \
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\
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void G_GNUC_DEPRECATED \
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cogl_##type_name##_unref (void *object) \
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{ \
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if (!cogl_is_##type_name (object)) \
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{ \
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g_warning (G_STRINGIFY (cogl_##type_name##_unref) \
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": Ignoring unref of Cogl handle " \
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"due to type mismatch"); \
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return; \
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} \
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\
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_COGL_OBJECT_DEBUG_UNREF (TypeName, object); \
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\
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cogl_handle_unref (object); \
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}
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#define COGL_OBJECT_DEFINE(TypeName, type_name) \
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COGL_OBJECT_DEFINE_WITH_CODE (TypeName, type_name, (void) 0)
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/* For temporary compatability */
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#define COGL_HANDLE_DEFINE_WITH_CODE(TypeName, type_name, code) \
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\
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COGL_OBJECT_DEFINE_WITH_CODE (TypeName, type_name, code) \
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\
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static Cogl##TypeName * \
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_cogl_##type_name##_handle_new (CoglHandle handle) \
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{ \
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return _cogl_##type_name##_object_new (handle); \
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}
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#define COGL_HANDLE_DEFINE(TypeName, type_name) \
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COGL_HANDLE_DEFINE_WITH_CODE (TypeName, type_name, (void) 0)
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#endif /* __COGL_OBJECT_PRIVATE_H */
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