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72f4ddf532
Since using addresses that might change is something that finally the FSF acknowledge as a plausible scenario (after changing address twice), the license blurb in the source files should use the URI for getting the license in case the library did not come with it. Not that URIs cannot possibly change, but at least it's easier to set up a redirection at the same place. As a side note: this commit closes the oldes bug in Clutter's bug report tool. http://bugzilla.openedhand.com/show_bug.cgi?id=521
158 lines
6.0 KiB
C
158 lines
6.0 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 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 <http://www.gnu.org/licenses/>.
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*
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*
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*/
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#ifndef __COGL_HANDLE_H
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#define __COGL_HANDLE_H
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typedef struct _CoglHandleClass
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{
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GQuark type;
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void *virt_free;
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} CoglHandleClass;
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/* All Cogl objects inherit from this base object by adding a member:
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*
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* CoglHandleObject _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#_handle_new (new_object);
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*/
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typedef struct _CoglHandleObject
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{
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unsigned int ref_count;
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CoglHandleClass *klass;
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} CoglHandleObject;
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/* Helper macro to encapsulate the common code for COGL reference
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counted handles */
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#ifdef COGL_HANDLE_DEBUG
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#define _COGL_HANDLE_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_HANDLE_DEBUG_REF(type_name, handle) G_STMT_START { \
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CoglHandleObject *__obj = (CoglHandleObject *)handle; \
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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_HANDLE_DEBUG_UNREF(type_name, handle) G_STMT_START { \
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CoglHandleObject *__obj = (CoglHandleObject *)handle; \
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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_HANDLE_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_HANDLE_DEBUG */
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#define _COGL_HANDLE_DEBUG_NEW(type_name, obj)
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#define _COGL_HANDLE_DEBUG_REF(type_name, obj)
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#define _COGL_HANDLE_DEBUG_UNREF(type_name, obj)
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#define COGL_HANDLE_DEBUG_FREE(obj)
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#endif /* COGL_HANDLE_DEBUG */
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#define COGL_HANDLE_DEFINE(TypeName, type_name) \
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\
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static CoglHandleClass _cogl_##type_name##_class; \
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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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static GQuark type = 0; \
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if (!type) \
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type = g_quark_from_static_string ("Cogl"#TypeName); \
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return type; \
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} \
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\
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static CoglHandle \
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_cogl_##type_name##_handle_new (Cogl##TypeName *new_obj) \
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{ \
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CoglHandleObject *obj = (CoglHandleObject *)&new_obj->_parent;\
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obj->ref_count = 1; \
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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_handle_##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_HANDLE_DEBUG_NEW (TypeName, obj); \
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return (CoglHandle) 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 (Cogl##TypeName *) handle; \
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} \
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\
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gboolean \
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cogl_is_##type_name (CoglHandle handle) \
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{ \
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CoglHandleObject *obj = (CoglHandleObject *)handle; \
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\
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if (handle == COGL_INVALID_HANDLE) \
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return FALSE; \
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\
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return (obj->klass->type == \
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_cogl_handle_##type_name##_get_type ()); \
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} \
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\
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CoglHandle G_GNUC_DEPRECATED \
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cogl_##type_name##_ref (CoglHandle handle) \
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{ \
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if (!cogl_is_##type_name (handle)) \
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return COGL_INVALID_HANDLE; \
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\
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_COGL_HANDLE_DEBUG_REF (TypeName, handle); \
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\
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cogl_handle_ref (handle); \
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\
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return handle; \
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} \
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\
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void G_GNUC_DEPRECATED \
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cogl_##type_name##_unref (CoglHandle handle) \
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{ \
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if (!cogl_is_##type_name (handle)) \
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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_HANDLE_DEBUG_UNREF (TypeName, handle); \
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\
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cogl_handle_unref (handle); \
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}
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#endif /* __COGL_HANDLE_H */
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