runtime/runtime.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_H
  25 #define _OBJC_RUNTIME_H
  26
  27 #include <objc/objc.h>
  28 #include <stdarg.h>
  29 #include <stdint.h>
  30 #include <stddef.h>
  31 #include <AvailabilityMacros.h>
  32 #include <TargetConditionals.h>
  33
  34 #if TARGET_OS_MAC
  35 #include <sys/types.h>
  36 #endif
  37
  38
  39 /* Types */
  40
  41 typedef struct objc_method *Method;
  42 typedef struct objc_ivar *Ivar;
  43 typedef struct objc_category *Category;
  44 typedef struct objc_property *objc_property_t;
  45
  46 struct objc_class {
  47     Class isa;
  48
  49 #if !__OBJC2__
  50     Class super_class                                        OBJC2_UNAVAILABLE;
  51     const char *name                                         OBJC2_UNAVAILABLE;
  52     long version                                             OBJC2_UNAVAILABLE;
  53     long info                                                OBJC2_UNAVAILABLE;
  54     long instance_size                                       OBJC2_UNAVAILABLE;
  55     struct objc_ivar_list *ivars                             OBJC2_UNAVAILABLE;
  56     struct objc_method_list **methodLists                    OBJC2_UNAVAILABLE;
  57     struct objc_cache *cache                                 OBJC2_UNAVAILABLE;
  58     struct objc_protocol_list *protocols                     OBJC2_UNAVAILABLE;
  59 #endif
  60
  61 } OBJC2_UNAVAILABLE;
  62 /* Use `Class` instead of `struct objc_class *` */
  63
  64 #ifdef __OBJC__
  65 @class Protocol;
  66 #else
  67 typedef struct objc_object Protocol;
  68 #endif
  69
  70 struct objc_method_description {
  71         SEL name;
  72         char *types;
  73 };
  74
  75
  76 /* Functions */
  77
  78 OBJC_EXPORT id object_copy(id obj, size_t size);
  79 OBJC_EXPORT id object_dispose(id obj);
  80
  81 OBJC_EXPORT Class object_getClass(id obj)
  82      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
  83 OBJC_EXPORT Class object_setClass(id obj, Class cls)
  84      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
  85
  86 OBJC_EXPORT const char *object_getClassName(id obj);
  87 OBJC_EXPORT void *object_getIndexedIvars(id obj);
  88
  89 OBJC_EXPORT id object_getIvar(id obj, Ivar ivar)
  90      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
  91 OBJC_EXPORT void object_setIvar(id obj, Ivar ivar, id value)
  92      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
  93
  94 OBJC_EXPORT Ivar object_setInstanceVariable(id obj, const char *name, void *value);
  95 OBJC_EXPORT Ivar object_getInstanceVariable(id obj, const char *name, void **outValue);
  96
  97 OBJC_EXPORT id objc_getClass(const char *name);
  98 OBJC_EXPORT id objc_getMetaClass(const char *name);
  99 OBJC_EXPORT id objc_lookUpClass(const char *name);
 100 OBJC_EXPORT id objc_getRequiredClass(const char *name);
 101 OBJC_EXPORT Class objc_getFutureClass(const char *name)
 102      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 103 OBJC_EXPORT void objc_setFutureClass(Class cls, const char *name)
 104      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 105 OBJC_EXPORT int objc_getClassList(Class *buffer, int bufferCount);
 106
 107 OBJC_EXPORT Protocol *objc_getProtocol(const char *name)
 108      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 109 OBJC_EXPORT Protocol **objc_copyProtocolList(unsigned int *outCount)
 110      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 111
 112 OBJC_EXPORT const char *class_getName(Class cls)
 113      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 114 OBJC_EXPORT BOOL class_isMetaClass(Class cls)
 115      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 116 OBJC_EXPORT Class class_getSuperclass(Class cls)
 117      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 118 OBJC_EXPORT Class class_setSuperclass(Class cls, Class newSuper)
 119      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER_BUT_DEPRECATED;
 120
 121 OBJC_EXPORT int class_getVersion(Class cls);
 122 OBJC_EXPORT void class_setVersion(Class cls, int version);
 123
 124 OBJC_EXPORT size_t class_getInstanceSize(Class cls)
 125      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 126
 127 OBJC_EXPORT Ivar class_getInstanceVariable(Class cls, const char *name);
 128 OBJC_EXPORT Ivar class_getClassVariable(Class cls, const char *name)
 129      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 130 OBJC_EXPORT Ivar *class_copyIvarList(Class cls, unsigned int *outCount)
 131      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 132
 133 OBJC_EXPORT Method class_getInstanceMethod(Class cls, SEL name);
 134 OBJC_EXPORT Method class_getClassMethod(Class cls, SEL name);
 135 OBJC_EXPORT IMP class_getMethodImplementation(Class cls, SEL name)
 136      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 137 OBJC_EXPORT IMP class_getMethodImplementation_stret(Class cls, SEL name)
 138      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 139 OBJC_EXPORT BOOL class_respondsToSelector(Class cls, SEL sel)
 140      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 141 OBJC_EXPORT Method *class_copyMethodList(Class cls, unsigned int *outCount)
 142      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 143
 144 OBJC_EXPORT BOOL class_conformsToProtocol(Class cls, Protocol *protocol)
 145      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 146 OBJC_EXPORT Protocol **class_copyProtocolList(Class cls, unsigned int *outCount)
 147      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 148
 149 OBJC_EXPORT objc_property_t class_getProperty(Class cls, const char *name)
 150      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 151 OBJC_EXPORT objc_property_t *class_copyPropertyList(Class cls, unsigned int *outCount)
 152      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 153
 154 OBJC_EXPORT const char *class_getIvarLayout(Class cls)
 155      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 156 OBJC_EXPORT const char *class_getWeakIvarLayout(Class cls)
 157      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 158
 159 OBJC_EXPORT id class_createInstance(Class cls, size_t extraBytes);
 160
 161 OBJC_EXPORT Class objc_allocateClassPair(Class superclass, const char *name,
 162                                          size_t extraBytes)
 163      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 164 OBJC_EXPORT void objc_registerClassPair(Class cls)
 165      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 166 OBJC_EXPORT Class objc_duplicateClass(Class original, const char *name,
 167                                       size_t extraBytes)
 168      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 169 OBJC_EXPORT void objc_disposeClassPair(Class cls)
 170      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 171
 172 OBJC_EXPORT BOOL class_addMethod(Class cls, SEL name, IMP imp,
 173                                  const char *types)
 174      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 175 OBJC_EXPORT IMP class_replaceMethod(Class cls, SEL name, IMP imp,
 176                                     const char *types)
 177      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 178 OBJC_EXPORT BOOL class_addIvar(Class cls, const char *name, size_t size,
 179                                uint8_t alignment, const char *types)
 180      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 181 OBJC_EXPORT BOOL class_addProtocol(Class cls, Protocol *protocol)
 182      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 183 OBJC_EXPORT void class_setIvarLayout(Class cls, const char *layout)
 184      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 185 OBJC_EXPORT void class_setWeakIvarLayout(Class cls, const char *layout)
 186      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 187
 188
 189 OBJC_EXPORT SEL method_getName(Method m)
 190      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 191 OBJC_EXPORT IMP method_getImplementation(Method m)
 192      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 193 OBJC_EXPORT const char *method_getTypeEncoding(Method m)
 194      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 195
 196 OBJC_EXPORT unsigned int method_getNumberOfArguments(Method m);
 197 OBJC_EXPORT char *method_copyReturnType(Method m)
 198      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 199 OBJC_EXPORT char *method_copyArgumentType(Method m, unsigned int index)
 200      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 201 OBJC_EXPORT void method_getReturnType(Method m, char *dst, size_t dst_len)
 202      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 203 OBJC_EXPORT void method_getArgumentType(Method m, unsigned int index,
 204                                         char *dst, size_t dst_len)
 205      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 206 OBJC_EXPORT struct objc_method_description *method_getDescription(Method m)
 207      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 208
 209 OBJC_EXPORT IMP method_setImplementation(Method m, IMP imp)
 210      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 211 OBJC_EXPORT void method_exchangeImplementations(Method m1, Method m2)
 212      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 213
 214 OBJC_EXPORT const char *ivar_getName(Ivar v)
 215      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 216 OBJC_EXPORT const char *ivar_getTypeEncoding(Ivar v)
 217      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 218 OBJC_EXPORT ptrdiff_t ivar_getOffset(Ivar v)
 219      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 220
 221 OBJC_EXPORT const char *property_getName(objc_property_t property)
 222      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 223 OBJC_EXPORT const char *property_getAttributes(objc_property_t property)
 224      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 225
 226 OBJC_EXPORT BOOL protocol_conformsToProtocol(Protocol *proto, Protocol *other)
 227      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 228 OBJC_EXPORT BOOL protocol_isEqual(Protocol *proto, Protocol *other)
 229      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 230 OBJC_EXPORT const char *protocol_getName(Protocol *p)
 231      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 232 OBJC_EXPORT struct objc_method_description protocol_getMethodDescription(Protocol *p, SEL aSel, BOOL isRequiredMethod, BOOL isInstanceMethod)
 233      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 234 OBJC_EXPORT struct objc_method_description *protocol_copyMethodDescriptionList(Protocol *p, BOOL isRequiredMethod, BOOL isInstanceMethod, unsigned int *outCount)
 235      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 236 OBJC_EXPORT objc_property_t protocol_getProperty(Protocol *proto, const char *name, BOOL isRequiredProperty, BOOL isInstanceProperty)
 237      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 238 OBJC_EXPORT objc_property_t *protocol_copyPropertyList(Protocol *proto, unsigned int *outCount)
 239      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 240 OBJC_EXPORT Protocol **protocol_copyProtocolList(Protocol *proto, unsigned int *outCount)
 241      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 242
 243 OBJC_EXPORT const char **objc_copyImageNames(unsigned int *outCount)
 244      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 245 OBJC_EXPORT const char *class_getImageName(Class cls)
 246      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 247 OBJC_EXPORT const char **objc_copyClassNamesForImage(const char *image,
 248                                                      unsigned int *outCount)
 249      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 250
 251 OBJC_EXPORT const char *sel_getName(SEL sel);
 252 OBJC_EXPORT SEL sel_getUid(const char *str);
 253 OBJC_EXPORT SEL sel_registerName(const char *str);
 254 OBJC_EXPORT BOOL sel_isEqual(SEL lhs, SEL rhs)
 255      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 256
 257 OBJC_EXPORT void objc_enumerationMutation(id)
 258      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 259 OBJC_EXPORT void objc_setEnumerationMutationHandler(void (*handler)(id))
 260      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 261
 262 OBJC_EXPORT void objc_setForwardHandler(void *fwd, void *fwd_stret)
 263      AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
 264
 265
 266 /* Associated Object support. */
 267
 268 /* objc_setAssociatedObject() options */
 269 enum {
 270     OBJC_ASSOCIATION_ASSIGN = 0,
 271     OBJC_ASSOCIATION_RETAIN_NONATOMIC = 1,
 272     OBJC_ASSOCIATION_COPY_NONATOMIC = 3,
 273     OBJC_ASSOCIATION_RETAIN = 01401,
 274     OBJC_ASSOCIATION_COPY = 01403
 275 };
 276 typedef uintptr_t objc_AssociationPolicy;
 277
 278 OBJC_EXPORT void objc_setAssociatedObject(id object, void *key, id value, objc_AssociationPolicy policy)
 279      AVAILABLE_MAC_OS_X_VERSION_10_6_AND_LATER;
 280 OBJC_EXPORT id objc_getAssociatedObject(id object, void *key)
 281      AVAILABLE_MAC_OS_X_VERSION_10_6_AND_LATER;
 282 OBJC_EXPORT void objc_removeAssociatedObjects(id object)
 283      AVAILABLE_MAC_OS_X_VERSION_10_6_AND_LATER;
 284
 285
 286 #define _C_ID       '@'
 287 #define _C_CLASS    '#'
 288 #define _C_SEL      ':'
 289 #define _C_CHR      'c'
 290 #define _C_UCHR     'C'
 291 #define _C_SHT      's'
 292 #define _C_USHT     'S'
 293 #define _C_INT      'i'
 294 #define _C_UINT     'I'
 295 #define _C_LNG      'l'
 296 #define _C_ULNG     'L'
 297 #define _C_LNG_LNG  'q'
 298 #define _C_ULNG_LNG 'Q'
 299 #define _C_FLT      'f'
 300 #define _C_DBL      'd'
 301 #define _C_BFLD     'b'
 302 #define _C_BOOL     'B'
 303 #define _C_VOID     'v'
 304 #define _C_UNDEF    '?'
 305 #define _C_PTR      '^'
 306 #define _C_CHARPTR  '*'
 307 #define _C_ATOM     '%'
 308 #define _C_ARY_B    '['
 309 #define _C_ARY_E    ']'
 310 #define _C_UNION_B  '('
 311 #define _C_UNION_E  ')'
 312 #define _C_STRUCT_B '{'
 313 #define _C_STRUCT_E '}'
 314 #define _C_VECTOR   '!'
 315 #define _C_CONST    'r'
 316
 317
 318 /* Obsolete types */
 319
 320 #if !__OBJC2__
 321
 322 #define CLS_GETINFO(cls,infomask)        ((cls)->info & (infomask))
 323 #define CLS_SETINFO(cls,infomask)        ((cls)->info |= (infomask))
 324
 325 // class is not a metaclass
 326 #define CLS_CLASS               0x1
 327 // class is a metaclass
 328 #define CLS_META                0x2
 329 // class's +initialize method has completed
 330 #define CLS_INITIALIZED         0x4
 331 // class is posing
 332 #define CLS_POSING              0x8
 333 // unused
 334 #define CLS_MAPPED              0x10
 335 // class and subclasses need cache flush during image loading
 336 #define CLS_FLUSH_CACHE         0x20
 337 // method cache should grow when full
 338 #define CLS_GROW_CACHE          0x40
 339 // unused
 340 #define CLS_NEED_BIND           0x80
 341 // methodLists is array of method lists
 342 #define CLS_METHOD_ARRAY        0x100
 343 // the JavaBridge constructs classes with these markers
 344 #define CLS_JAVA_HYBRID         0x200
 345 #define CLS_JAVA_CLASS          0x400
 346 // thread-safe +initialize
 347 #define CLS_INITIALIZING        0x800
 348 // bundle unloading
 349 #define CLS_FROM_BUNDLE         0x1000
 350 // C++ ivar support
 351 #define CLS_HAS_CXX_STRUCTORS   0x2000
 352 // Lazy method list arrays
 353 #define CLS_NO_METHOD_ARRAY     0x4000
 354 // +load implementation
 355 #define CLS_HAS_LOAD_METHOD     0x8000
 356 // objc_allocateClassPair API
 357 #define CLS_CONSTRUCTING        0x10000
 358 // class compiled with bigger class structure
 359 #define CLS_EXT                 0x20000
 360
 361
 362 struct objc_method_description_list {
 363         int count;
 364         struct objc_method_description list[1];
 365 };
 366
 367
 368 struct objc_protocol_list {
 369     struct objc_protocol_list *next;
 370     long count;
 371     Protocol *list[1];
 372 };
 373
 374
 375 struct objc_category {
 376     char *category_name                                      OBJC2_UNAVAILABLE;
 377     char *class_name                                         OBJC2_UNAVAILABLE;
 378     struct objc_method_list *instance_methods                OBJC2_UNAVAILABLE;
 379     struct objc_method_list *class_methods                   OBJC2_UNAVAILABLE;
 380     struct objc_protocol_list *protocols                     OBJC2_UNAVAILABLE;
 381 }                                                            OBJC2_UNAVAILABLE;
 382
 383
 384 struct objc_ivar {
 385     char *ivar_name                                          OBJC2_UNAVAILABLE;
 386     char *ivar_type                                          OBJC2_UNAVAILABLE;
 387     int ivar_offset                                          OBJC2_UNAVAILABLE;
 388 #ifdef __LP64__
 389     int space                                                OBJC2_UNAVAILABLE;
 390 #endif
 391 }                                                            OBJC2_UNAVAILABLE;
 392
 393 struct objc_ivar_list {
 394     int ivar_count                                           OBJC2_UNAVAILABLE;
 395 #ifdef __LP64__
 396     int space                                                OBJC2_UNAVAILABLE;
 397 #endif
 398     /* variable length structure */
 399     struct objc_ivar ivar_list[1]                            OBJC2_UNAVAILABLE;
 400 }                                                            OBJC2_UNAVAILABLE;
 401
 402
 403 struct objc_method {
 404     SEL method_name                                          OBJC2_UNAVAILABLE;
 405     char *method_types                                       OBJC2_UNAVAILABLE;
 406     IMP method_imp                                           OBJC2_UNAVAILABLE;
 407 }                                                            OBJC2_UNAVAILABLE;
 408
 409 struct objc_method_list {
 410     struct objc_method_list *obsolete                        OBJC2_UNAVAILABLE;
 411
 412     int method_count                                         OBJC2_UNAVAILABLE;
 413 #ifdef __LP64__
 414     int space                                                OBJC2_UNAVAILABLE;
 415 #endif
 416     /* variable length structure */
 417     struct objc_method method_list[1]                        OBJC2_UNAVAILABLE;
 418 }                                                            OBJC2_UNAVAILABLE;
 419
 420
 421 typedef struct objc_symtab *Symtab                           OBJC2_UNAVAILABLE;
 422
 423 struct objc_symtab {
 424     unsigned long sel_ref_cnt                                OBJC2_UNAVAILABLE;
 425     SEL *refs                                                OBJC2_UNAVAILABLE;
 426     unsigned short cls_def_cnt                               OBJC2_UNAVAILABLE;
 427     unsigned short cat_def_cnt                               OBJC2_UNAVAILABLE;
 428     void *defs[1] /* variable size */                        OBJC2_UNAVAILABLE;
 429 }                                                            OBJC2_UNAVAILABLE;
 430
 431
 432 typedef struct objc_cache *Cache                             OBJC2_UNAVAILABLE;
 433
 434 #define CACHE_BUCKET_NAME(B)  ((B)->method_name)
 435 #define CACHE_BUCKET_IMP(B)   ((B)->method_imp)
 436 #define CACHE_BUCKET_VALID(B) (B)
 437 #ifndef __LP64__
 438 #define CACHE_HASH(sel, mask) (((uintptr_t)(sel)>>2) & (mask))
 439 #else
 440 #define CACHE_HASH(sel, mask) (((unsigned int)((uintptr_t)(sel)>>3)) & (mask))
 441 #endif
 442 struct objc_cache {
 443     unsigned int mask /* total = mask + 1 */                 OBJC2_UNAVAILABLE;
 444     unsigned int occupied                                    OBJC2_UNAVAILABLE;
 445     Method buckets[1]                                        OBJC2_UNAVAILABLE;
 446 } /* GrP fixme should be OBJC2_UNAVAILABLE, but isn't because of spurious warnings in [super ...] calls */;
 447
 448
 449 typedef struct objc_module *Module                           OBJC2_UNAVAILABLE;
 450
 451 struct objc_module {
 452     unsigned long version                                    OBJC2_UNAVAILABLE;
 453     unsigned long size                                       OBJC2_UNAVAILABLE;
 454     const char *name                                         OBJC2_UNAVAILABLE;
 455     Symtab symtab                                            OBJC2_UNAVAILABLE;
 456 }                                                            OBJC2_UNAVAILABLE;
 457
 458 #else
 459
 460 struct objc_method_list;
 461
 462 #endif
 463
 464
 465 /* Obsolete functions */
 466
 467 OBJC_EXPORT BOOL sel_isMapped(SEL sel)                       OBJC2_UNAVAILABLE;
 468
 469 OBJC_EXPORT id object_copyFromZone(id anObject, size_t nBytes, void *z) DEPRECATED_IN_MAC_OS_X_VERSION_10_5_AND_LATER;
 470 OBJC_EXPORT id object_realloc(id anObject, size_t nBytes)    OBJC2_UNAVAILABLE;
 471 OBJC_EXPORT id object_reallocFromZone(id anObject, size_t nBytes, void *z) OBJC2_UNAVAILABLE;
 472
 473 #define OBSOLETE_OBJC_GETCLASSES 1
 474 OBJC_EXPORT void *objc_getClasses(void)                      OBJC2_UNAVAILABLE;
 475 OBJC_EXPORT void objc_addClass(Class myClass)                OBJC2_UNAVAILABLE;
 476 OBJC_EXPORT void objc_setClassHandler(int (*)(const char *)) OBJC2_UNAVAILABLE;
 477 OBJC_EXPORT void objc_setMultithreaded (BOOL flag)           OBJC2_UNAVAILABLE;
 478
 479 OBJC_EXPORT id class_createInstanceFromZone(Class, size_t idxIvars, void *z) DEPRECATED_IN_MAC_OS_X_VERSION_10_5_AND_LATER;
 480
 481 OBJC_EXPORT void class_addMethods(Class, struct objc_method_list *) OBJC2_UNAVAILABLE;
 482 OBJC_EXPORT void class_removeMethods(Class, struct objc_method_list *) OBJC2_UNAVAILABLE;
 483
 484 OBJC_EXPORT Class class_poseAs(Class imposter, Class original) OBJC2_UNAVAILABLE;
 485
 486 OBJC_EXPORT unsigned int method_getSizeOfArguments(Method m) OBJC2_UNAVAILABLE;
 487 OBJC_EXPORT unsigned method_getArgumentInfo(struct objc_method *m, int arg, const char **type, int *offset) OBJC2_UNAVAILABLE;
 488
 489 OBJC_EXPORT BOOL class_respondsToMethod(Class, SEL)          OBJC2_UNAVAILABLE;
 490 OBJC_EXPORT IMP class_lookupMethod(Class, SEL)               OBJC2_UNAVAILABLE;
 491 OBJC_EXPORT Class objc_getOrigClass(const char *name)        OBJC2_UNAVAILABLE;
 492 #define OBJC_NEXT_METHOD_LIST 1
 493 OBJC_EXPORT struct objc_method_list *class_nextMethodList(Class, void **) OBJC2_UNAVAILABLE;
 494 // usage for nextMethodList
 495 //
 496 // void *iterator = 0;
 497 // struct objc_method_list *mlist;
 498 // while ( mlist = class_nextMethodList( cls, &iterator ) )
 499 //    ;
 500
 501 OBJC_EXPORT id (*_alloc)(Class, size_t)                      OBJC2_UNAVAILABLE;
 502 OBJC_EXPORT id (*_copy)(id, size_t)                          OBJC2_UNAVAILABLE;
 503 OBJC_EXPORT id (*_realloc)(id, size_t)                       OBJC2_UNAVAILABLE;
 504 OBJC_EXPORT id (*_dealloc)(id)                               OBJC2_UNAVAILABLE;
 505 OBJC_EXPORT id (*_zoneAlloc)(Class, size_t, void *)          OBJC2_UNAVAILABLE;
 506 OBJC_EXPORT id (*_zoneRealloc)(id, size_t, void *)           OBJC2_UNAVAILABLE;
 507 OBJC_EXPORT id (*_zoneCopy)(id, size_t, void *)              OBJC2_UNAVAILABLE;
 508 OBJC_EXPORT void (*_error)(id, const char *, va_list)        OBJC2_UNAVAILABLE;
 509
 510 #endif