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54735dec84
The coding style has for a long time said to avoid using redundant glib
data types such as gint or gchar etc because we feel that they make the
code look unnecessarily foreign to developers coming from outside of the
Gnome developer community.
Note: When we tried to find the historical rationale for the types we
just found that they were apparently only added for consistent syntax
highlighting which didn't seem that compelling.
Up until now we have been continuing to use some of the platform
specific type such as gint{8,16,32,64} and gsize but this patch switches
us over to using the standard c99 equivalents instead so we can further
ensure that our code looks familiar to the widest range of C developers
who might potentially contribute to Cogl.
So instead of using the gint{8,16,32,64} and guint{8,16,32,64} types this
switches all Cogl code to instead use the int{8,16,32,64}_t and
uint{8,16,32,64}_t c99 types instead.
Instead of gsize we now use size_t
For now we are not going to use the c99 _Bool type and instead we have
introduced a new CoglBool type to use instead of gboolean.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 5967dad2400d32ca6319cef6cb572e81bf2c15f0)
283 lines
14 KiB
C
283 lines
14 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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#include "cogl-debug.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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/* XXX: sadly we didn't fully consider when we copied the cairo API
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* for _set_user_data that the callback doesn't get a pointer to the
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* instance which is desired in most cases. This means you tend to end
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* up creating micro allocations for the private data just so you can
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* pair up the data of interest with the original instance for
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* identification when it is later destroyed.
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*
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* Internally we use a small hack to avoid needing these micro
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* allocations by actually passing the instance as a second argument
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* to the callback */
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typedef void (*CoglUserDataDestroyInternalCallback) (void *user_data,
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void *instance);
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typedef struct _CoglObjectClass
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{
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const char *name;
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void *virt_free;
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void *virt_unref;
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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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CoglUserDataDestroyInternalCallback 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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CoglObjectClass *klass;
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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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unsigned int ref_count;
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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 (OBJECT, "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 (OBJECT, "COGL %s REF %p %i", \
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(__obj)->klass->name, \
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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 (OBJECT, "COGL %s UNREF %p %i", \
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(__obj)->klass->name, \
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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 (OBJECT, "COGL %s FREE %p", \
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(obj)->klass->name, (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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#define COGL_OBJECT_COMMON_DEFINE_WITH_CODE(TypeName, type_name, code) \
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\
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CoglObjectClass _cogl_##type_name##_class; \
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static unsigned long _cogl_object_##type_name##_count; \
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\
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static inline void \
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_cogl_object_##type_name##_inc (void) \
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{ \
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_cogl_object_##type_name##_count++; \
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} \
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\
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static inline void \
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_cogl_object_##type_name##_dec (void) \
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{ \
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_cogl_object_##type_name##_count--; \
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} \
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\
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static void \
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_cogl_object_##type_name##_indirect_free (CoglObject *obj) \
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{ \
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_cogl_##type_name##_free ((Cogl##TypeName *) obj); \
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_cogl_object_##type_name##_dec (); \
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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 = 0; \
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cogl_object_ref (obj); \
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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->virt_free) \
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{ \
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_cogl_object_##type_name##_count = 0; \
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\
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if (_cogl_debug_instances == NULL) \
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_cogl_debug_instances = \
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g_hash_table_new (g_str_hash, g_str_equal); \
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\
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obj->klass->virt_free = \
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_cogl_object_##type_name##_indirect_free; \
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obj->klass->virt_unref = \
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_cogl_object_default_unref; \
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obj->klass->name = "Cogl"#TypeName, \
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\
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g_hash_table_insert (_cogl_debug_instances, \
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(void *) obj->klass->name, \
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&_cogl_object_##type_name##_count); \
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\
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{ code; } \
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} \
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\
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_cogl_object_##type_name##_inc (); \
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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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#define COGL_OBJECT_DEFINE_WITH_CODE(TypeName, type_name, code) \
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\
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COGL_OBJECT_COMMON_DEFINE_WITH_CODE(TypeName, type_name, code) \
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\
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CoglBool \
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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 == &_cogl_##type_name##_class; \
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}
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#define COGL_OBJECT_INTERNAL_DEFINE_WITH_CODE(TypeName, type_name, code) \
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\
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COGL_OBJECT_COMMON_DEFINE_WITH_CODE(TypeName, type_name, code) \
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\
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CoglBool \
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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 == &_cogl_##type_name##_class; \
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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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#define COGL_OBJECT_INTERNAL_DEFINE(TypeName, type_name) \
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COGL_OBJECT_INTERNAL_DEFINE_WITH_CODE (TypeName, type_name, (void) 0)
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/* For temporary compatability */
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#define COGL_HANDLE_INTERNAL_DEFINE_WITH_CODE(TypeName, type_name, code) \
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\
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COGL_OBJECT_INTERNAL_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_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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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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void
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_cogl_object_default_unref (void *obj);
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#endif /* __COGL_OBJECT_PRIVATE_H */
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