1 /* GNU Objective C Runtime class related functions
2 Copyright (C) 1993, 1995, 1996, 2009 Free Software Foundation, Inc.
3 Contributed by Kresten Krab Thorup
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under the
8 terms of the GNU General Public License as published by the Free Software
9 Foundation; either version 3, or (at your option) any later version.
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
13 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
16 Under Section 7 of GPL version 3, you are granted additional
17 permissions described in the GCC Runtime Library Exception, version
18 3.1, as published by the Free Software Foundation.
20 You should have received a copy of the GNU General Public License and
21 a copy of the GCC Runtime Library Exception along with this program;
22 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 <http://www.gnu.org/licenses/>. */
25 #include "objc-private/common.h"
26 #include "objc/runtime.h"
27 #include "objc/thr.h" /* Required by objc-private/runtime.h. */
28 #include "objc-private/module-abi-8.h" /* For CLS_ISCLASS and similar. */
29 #include "objc-private/runtime.h" /* the kitchen sink */
31 #include <string.h> /* For memcpy() */
35 # include <gc_typed.h>
38 /* FIXME: The semantics of extraBytes are not really clear. */
41 class_createInstance (Class
class, size_t extraBytes
)
46 if (CLS_ISCLASS (class))
47 new = (id
) GC_malloc_explicitly_typed (class->instance_size
+ extraBytes
,
48 (GC_descr
)class->gc_object_type
);
50 if (CLS_ISCLASS (class))
51 new = (id
) objc_calloc (class->instance_size
+ extraBytes
, 1);
56 /* There is no need to zero the memory, since both
57 GC_malloc_explicitly_typed and objc_calloc return zeroed
59 new->class_pointer
= class;
62 /* TODO: Invoke C++ constructors on all appropriate C++ instance
63 variables of the new object. */
68 /* Traditional GNU Objective-C Runtime API. */
70 class_create_instance (Class
class)
72 return class_createInstance (class, 0);
75 /* Temporary, while we are including objc-api.h instead of runtime.h. */
79 object_copy (id object
, size_t extraBytes
)
81 if ((object
!= nil
) && CLS_ISCLASS (object
->class_pointer
))
83 /* TODO: How should it work with C++ constructors ? */
84 id copy
= class_createInstance (object
->class_pointer
, extraBytes
);
85 memcpy (copy
, object
, object
->class_pointer
->instance_size
+ extraBytes
);
93 object_dispose (id object
)
95 if ((object
!= nil
) && CLS_ISCLASS (object
->class_pointer
))
97 /* TODO: Invoke C++ destructors on all appropriate C++ instance
98 variables. But what happens with the garbage collector ?
99 Would object_dispose() be ever called in that case ? */
107 object_getClassName (id object
)
110 return object
->class_pointer
->name
;
116 object_setClass (id object
, Class class_
)
122 Class old_class
= object
->class_pointer
;
124 object
->class_pointer
= class_
;
130 Hook functions for memory allocation and disposal. Deprecated
131 and currently unused.
134 id (*_objc_object_alloc
) (Class
) = 0;
135 id (*_objc_object_dispose
) (id
) = 0;
136 id (*_objc_object_copy
) (id
) = 0;