runtime/objc-runtime-old.h

   1 /*
   2  * Copyright (c) 1999-2007 Apple Inc.  All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 #ifndef _OBJC_RUNTIME_OLD_H
  25 #define _OBJC_RUNTIME_OLD_H
  26
  27 #include "objc-private.h"
  28 #include "objc-file-old.h"
  29
  30
  31 struct old_class {
  32     struct old_class *isa;
  33     struct old_class *super_class;
  34     const char *name;
  35     long version;
  36     long info;
  37     long instance_size;
  38     struct old_ivar_list *ivars;
  39     struct old_method_list **methodLists;
  40     Cache cache;
  41     struct old_protocol_list *protocols;
  42     // CLS_EXT only
  43     const uint8_t *ivar_layout;
  44     struct old_class_ext *ext;
  45 };
  46
  47 struct old_class_ext {
  48     uint32_t size;
  49     const uint8_t *weak_ivar_layout;
  50     struct old_property_list **propertyLists;
  51 };
  52
  53 struct old_category {
  54     char *category_name;
  55     char *class_name;
  56     struct old_method_list *instance_methods;
  57     struct old_method_list *class_methods;
  58     struct old_protocol_list *protocols;
  59     uint32_t size;
  60     struct old_property_list *instance_properties;
  61 };
  62
  63 struct old_ivar {
  64     char *ivar_name;
  65     char *ivar_type;
  66     int ivar_offset;
  67 #ifdef __LP64__
  68     int space;
  69 #endif
  70 };
  71
  72 struct old_ivar_list {
  73     int ivar_count;
  74 #ifdef __LP64__
  75     int space;
  76 #endif
  77     /* variable length structure */
  78     struct old_ivar ivar_list[1];
  79 };
  80
  81
  82 struct old_method {
  83     SEL method_name;
  84     char *method_types;
  85     IMP method_imp;
  86 };
  87
  88 struct old_method_list {
  89     struct old_method_list *obsolete;
  90
  91     int method_count;
  92 #ifdef __LP64__
  93     int space;
  94 #endif
  95     /* variable length structure */
  96     struct old_method method_list[1];
  97 };
  98
  99 struct old_protocol {
 100     Class isa;
 101     const char *protocol_name;
 102     struct old_protocol_list *protocol_list;
 103     struct objc_method_description_list *instance_methods;
 104     struct objc_method_description_list *class_methods;
 105 };
 106
 107 struct old_protocol_list {
 108     struct old_protocol_list *next;
 109     long count;
 110     struct old_protocol *list[1];
 111 };
 112
 113 struct old_protocol_ext {
 114     uint32_t size;
 115     struct objc_method_description_list *optional_instance_methods;
 116     struct objc_method_description_list *optional_class_methods;
 117     struct old_property_list *instance_properties;
 118 };
 119
 120
 121 struct old_property {
 122     const char *name;
 123     const char *attributes;
 124 };
 125
 126 struct old_property_list {
 127     uint32_t entsize;
 128     uint32_t count;
 129     struct old_property first;
 130 };
 131
 132
 133 #define CLS_CLASS               0x1
 134 #define CLS_META                0x2
 135 #define CLS_INITIALIZED         0x4
 136 #define CLS_POSING              0x8
 137 #define CLS_MAPPED              0x10
 138 #define CLS_FLUSH_CACHE         0x20
 139 #define CLS_GROW_CACHE          0x40
 140 #define CLS_NEED_BIND           0x80
 141 #define CLS_METHOD_ARRAY        0x100
 142 // the JavaBridge constructs classes with these markers
 143 #define CLS_JAVA_HYBRID         0x200
 144 #define CLS_JAVA_CLASS          0x400
 145 // thread-safe +initialize
 146 #define CLS_INITIALIZING        0x800
 147 // bundle unloading
 148 #define CLS_FROM_BUNDLE         0x1000
 149 // C++ ivar support
 150 #define CLS_HAS_CXX_STRUCTORS   0x2000
 151 // Lazy method list arrays
 152 #define CLS_NO_METHOD_ARRAY     0x4000
 153 // +load implementation
 154 #define CLS_HAS_LOAD_METHOD     0x8000
 155 // objc_allocateClassPair API
 156 #define CLS_CONSTRUCTING        0x10000
 157 // visibility=hidden
 158 #define CLS_HIDDEN              0x20000
 159 // GC:  class has unsafe finalize method
 160 #define CLS_FINALIZE_ON_MAIN_THREAD 0x40000
 161 // Lazy property list arrays
 162 #define CLS_NO_PROPERTY_ARRAY   0x80000
 163 // +load implementation
 164 #define CLS_CONNECTED           0x100000
 165 #define CLS_LOADED              0x200000
 166 // objc_allocateClassPair API
 167 #define CLS_CONSTRUCTED         0x400000
 168 // class is leaf for cache flushing
 169 #define CLS_LEAF                0x800000
 170 // class instances may have associative references
 171 #define CLS_INSTANCES_HAVE_ASSOCIATED_OBJECTS 0x1000000
 172 // class has instance-specific GC layout
 173 #define CLS_HAS_INSTANCE_SPECIFIC_LAYOUT 0x2000000
 174
 175
 176 // Terminator for array of method lists
 177 #define END_OF_METHODS_LIST ((struct old_method_list*)-1)
 178
 179 #define ISCLASS(cls)            (((cls)->info & CLS_CLASS) != 0)
 180 #define ISMETA(cls)             (((cls)->info & CLS_META) != 0)
 181 #define GETMETA(cls)            (ISMETA(cls) ? (cls) : (cls)->isa)
 182
 183
 184 __BEGIN_DECLS
 185
 186 #define oldcls(cls) ((struct old_class *)cls)
 187 #define oldprotocol(proto) ((struct old_protocol *)proto)
 188 #define oldmethod(meth) ((struct old_method *)meth)
 189 #define oldcategory(cat) ((struct old_category *)cat)
 190 #define oldivar(ivar) ((struct old_ivar *)ivar)
 191 #define oldproperty(prop) ((struct old_property *)prop)
 192
 193 extern void unload_class(struct old_class *cls);
 194
 195 extern Class objc_getOrigClass (const char *name);
 196 extern IMP lookupNamedMethodInMethodList(struct old_method_list *mlist, const char *meth_name);
 197 extern void _objc_insertMethods(struct old_class *cls, struct old_method_list *mlist, struct old_category *cat);
 198 extern void _objc_removeMethods(struct old_class *cls, struct old_method_list *mlist);
 199 extern void _objc_flush_caches (Class cls);
 200 extern BOOL _class_addProperties(struct old_class *cls, struct old_property_list *additions);
 201 extern void change_class_references(struct old_class *imposter, struct old_class *original, struct old_class *copy, BOOL changeSuperRefs);
 202 extern void flush_marked_caches(void);
 203 extern void set_superclass(struct old_class *cls, struct old_class *supercls, BOOL cls_is_new);
 204 extern void try_free(const void *p);
 205
 206 extern struct old_property *property_list_nth(const struct old_property_list *plist, uint32_t i);
 207 extern struct old_property **copyPropertyList(struct old_property_list *plist, unsigned int *outCount);
 208
 209 extern void _class_setInfo(Class cls, long set);
 210 extern void _class_clearInfo(Class cls, long clear);
 211 extern void _class_changeInfo(Class cls, long set, long clear);
 212
 213
 214 // used by flush_caches outside objc-cache.m
 215 extern void _cache_flush(Class cls);
 216 #ifdef OBJC_INSTRUMENTED
 217 extern unsigned int LinearFlushCachesCount;
 218 extern unsigned int LinearFlushCachesVisitedCount;
 219 extern unsigned int MaxLinearFlushCachesVisitedCount;
 220 extern unsigned int NonlinearFlushCachesCount;
 221 extern unsigned int NonlinearFlushCachesClassCount;
 222 extern unsigned int NonlinearFlushCachesVisitedCount;
 223 extern unsigned int MaxNonlinearFlushCachesVisitedCount;
 224 extern unsigned int IdealFlushCachesCount;
 225 extern unsigned int MaxIdealFlushCachesCount;
 226 #endif
 227
 228 __END_DECLS
 229
 230 #endif