Artifact 88abdbc6a02a1f78e7f73fe035d0004283b03a9a4f26a2b8b7493264883e689f:
- File
src/runtime/private.h
— part of check-in
[ede088a30d]
at
2019-04-14 13:35:38
on branch trunk
— runtime: Match Apple's +[initialize] behavior
This now calls +[initialize] several times on the same class if it is
unimplemented in one or more of the classes in the chain, to match the
behavior of the Apple runtime. While the behavior before was safer, it
can lead to testing against the ObjFW runtime and everything working,
but then failing when trying to use it with the Apple runtime. (user: js, size: 8978) [annotate] [blame] [check-ins using]
/* * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, * 2018, 2019 * Jonathan Schleifer <js@heap.zone> * * All rights reserved. * * This file is part of ObjFW. It may be distributed under the terms of the * Q Public License 1.0, which can be found in the file LICENSE.QPL included in * the packaging of this file. * * Alternatively, it may be distributed under the terms of the GNU General * Public License, either version 2 or 3, which can be found in the file * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this * file. */ #include "config.h" #import "macros.h" #import "platform.h" #if !defined(__has_feature) || !__has_feature(nullability) # ifndef _Nonnull # define _Nonnull # endif # ifndef _Nullable # define _Nullable # endif #endif struct objc_abi_class { struct objc_abi_class *_Nonnull metaclass; const char *_Nullable superclass; const char *_Nonnull name; unsigned long version; unsigned long info; long instanceSize; void *_Nullable iVars; struct objc_abi_method_list *_Nullable methodList; void *_Nullable DTable; void *_Nullable subclassList; void *_Nullable siblingClass; void *_Nullable protocols; void *_Nullable GCObjectType; long ABIVersion; int32_t *_Nonnull *_Nullable iVarOffsets; void *_Nullable properties; }; struct objc_abi_selector { const char *_Nonnull name; const char *_Nullable typeEncoding; }; struct objc_abi_method { struct objc_abi_selector selector; IMP _Nonnull implementation; }; struct objc_abi_method_list { struct objc_abi_method_list *_Nullable next; unsigned int count; struct objc_abi_method methods[1]; }; struct objc_abi_category { const char *_Nonnull categoryName; const char *_Nonnull className; struct objc_abi_method_list *_Nullable instanceMethods; struct objc_abi_method_list *_Nullable classMethods; struct objc_protocol_list *_Nullable protocols; }; struct objc_abi_method_description { const char *_Nonnull name; const char *_Nonnull typeEncoding; }; struct objc_abi_method_description_list { int count; struct objc_abi_method_description list[1]; }; struct objc_abi_static_instances { const char *_Nonnull className; id _Nullable instances[1]; }; struct objc_abi_symtab { unsigned long unknown; struct objc_abi_selector *_Nullable selectorRefs; uint16_t classDefsCount; uint16_t categoryDefsCount; void *_Nonnull defs[1]; }; struct objc_abi_module { unsigned long version; /* 9 = non-fragile */ unsigned long size; const char *_Nullable name; struct objc_abi_symtab *_Nonnull symtab; }; struct objc_hashtable_bucket { const void *_Nonnull key, *_Nonnull object; uint32_t hash; }; struct objc_hashtable { uint32_t (*_Nonnull hash)(const void *_Nonnull key); bool (*_Nonnull equal)(const void *_Nonnull key1, const void *_Nonnull key2); uint32_t count, size; struct objc_hashtable_bucket *_Nonnull *_Nullable data; }; struct objc_sparsearray { struct objc_sparsearray_data { void *_Nullable next[256]; } *_Nonnull data; uint8_t indexSize; }; struct objc_dtable { struct objc_dtable_level2 { #ifdef OF_SELUID24 struct objc_dtable_level3 { IMP _Nullable buckets[256]; } *_Nonnull buckets[256]; #else IMP _Nullable buckets[256]; #endif } *_Nonnull buckets[256]; }; #if defined(OBJC_COMPILING_AMIGA_LIBRARY) || \ defined(OBJC_COMPILING_AMIGA_LINKLIB) struct objc_libc { void *_Nullable (*_Nonnull malloc)(size_t); void *_Nullable (*_Nonnull calloc)(size_t, size_t); void *_Nullable (*_Nonnull realloc)(void *_Nullable, size_t); void (*_Nonnull free)(void *_Nullable); int (*_Nonnull vfprintf)(FILE *_Nonnull, const char *_Nonnull, va_list); int (*_Nonnull fflush)(FILE *_Nonnull); void (*_Nonnull abort)(void); # ifdef HAVE_SJLJ_EXCEPTIONS int (*_Nonnull _Unwind_SjLj_RaiseException)(void *_Nonnull); # else int (*_Nonnull _Unwind_RaiseException)(void *_Nonnull); # endif void (*_Nonnull _Unwind_DeleteException)(void *_Nonnull); void *_Nullable (*_Nonnull _Unwind_GetLanguageSpecificData)( void *_Nonnull); uintptr_t (*_Nonnull _Unwind_GetRegionStart)(void *_Nonnull); uintptr_t (*_Nonnull _Unwind_GetDataRelBase)(void *_Nonnull); uintptr_t (*_Nonnull _Unwind_GetTextRelBase)(void *_Nonnull); uintptr_t (*_Nonnull _Unwind_GetIP)(void *_Nonnull); uintptr_t (*_Nonnull _Unwind_GetGR)(void *_Nonnull, int); void (*_Nonnull _Unwind_SetIP)(void *_Nonnull, uintptr_t); void (*_Nonnull _Unwind_SetGR)(void *_Nonnull, int, uintptr_t); # ifdef HAVE_SJLJ_EXCEPTIONS void (*_Nonnull _Unwind_SjLj_Resume)(void *_Nonnull); # else void (*_Nonnull _Unwind_Resume)(void *_Nonnull); # endif void (*_Nonnull __register_frame_info)(const void *_Nonnull, void *_Nonnull); void (*_Nonnull __deregister_frame_info)(const void *_Nonnull); }; #endif #ifdef OBJC_COMPILING_AMIGA_LIBRARY # if defined(__MORPHOS__) # include <ppcinline/macros.h> # define OBJC_M68K_ARG(type, name, reg) type name = (type)REG_##reg; # else # define OBJC_M68K_ARG(type, name, reg) \ register type reg_##name __asm__(#reg); \ type name = reg_##name; # endif # undef stdout # undef stderr extern FILE *stdout, *stderr; #endif extern void objc_register_all_categories(struct objc_abi_symtab *_Nonnull); extern struct objc_category *_Nullable *_Nullable objc_categories_for_class(Class _Nonnull); extern void objc_unregister_all_categories(void); extern void objc_initialize_class(Class _Nonnull); extern void objc_update_dtable(Class _Nonnull); extern void objc_register_all_classes(struct objc_abi_symtab *_Nonnull); extern Class _Nullable objc_classname_to_class(const char *_Nonnull, bool); extern void objc_unregister_class(Class _Nonnull); extern void objc_unregister_all_classes(void); extern uint32_t objc_hash_string(const void *_Nonnull); extern bool objc_equal_string(const void *_Nonnull, const void *_Nonnull); extern struct objc_hashtable *_Nonnull objc_hashtable_new( uint32_t (*_Nonnull)(const void *_Nonnull), bool (*_Nonnull)(const void *_Nonnull, const void *_Nonnull), uint32_t); extern struct objc_hashtable_bucket objc_deleted_bucket; extern void objc_hashtable_set(struct objc_hashtable *_Nonnull, const void *_Nonnull, const void *_Nonnull); extern void *_Nullable objc_hashtable_get(struct objc_hashtable *_Nonnull, const void *_Nonnull); extern void objc_hashtable_delete(struct objc_hashtable *_Nonnull, const void *_Nonnull); extern void objc_hashtable_free(struct objc_hashtable *_Nonnull); extern void objc_register_selector(struct objc_abi_selector *_Nonnull); extern void objc_register_all_selectors(struct objc_abi_symtab *_Nonnull); extern void objc_unregister_all_selectors(void); extern struct objc_sparsearray *_Nonnull objc_sparsearray_new(uint8_t); extern void *_Nullable objc_sparsearray_get(struct objc_sparsearray *_Nonnull, uintptr_t); extern void objc_sparsearray_set(struct objc_sparsearray *_Nonnull, uintptr_t, void *_Nullable); extern void objc_sparsearray_free(struct objc_sparsearray *_Nonnull); extern struct objc_dtable *_Nonnull objc_dtable_new(void); extern void objc_dtable_copy(struct objc_dtable *_Nonnull, struct objc_dtable *_Nonnull); extern void objc_dtable_set(struct objc_dtable *_Nonnull, uint32_t, IMP _Nullable); extern void objc_dtable_free(struct objc_dtable *_Nonnull); extern void objc_dtable_cleanup(void); extern void objc_init_static_instances(struct objc_abi_symtab *_Nonnull); extern void objc_forget_pending_static_instances(void); #ifdef OF_HAVE_THREADS extern void objc_global_mutex_lock(void); extern void objc_global_mutex_unlock(void); extern void objc_global_mutex_free(void); #else # define objc_global_mutex_lock() # define objc_global_mutex_unlock() # define objc_global_mutex_free() #endif static inline IMP _Nullable objc_dtable_get(const struct objc_dtable *_Nonnull dtable, uint32_t idx) { #ifdef OF_SELUID24 uint8_t i = idx >> 16; uint8_t j = idx >> 8; uint8_t k = idx; return dtable->buckets[i]->buckets[j]->buckets[k]; #else uint8_t i = idx >> 8; uint8_t j = idx; return dtable->buckets[i]->buckets[j]; #endif } #if defined(OF_ELF) # if defined(OF_X86_64) || defined(OF_X86) || defined(OF_POWERPC) || \ defined(OF_ARM64) || defined(OF_ARM) || \ defined(OF_MIPS64_N64) || defined(OF_MIPS) || \ defined(OF_SPARC64) || defined(OF_SPARC) # define OF_ASM_LOOKUP # endif #elif defined(OF_MACH_O) # if defined(OF_X86_64) || defined(OF_POWERPC) # define OF_ASM_LOOKUP # endif #elif defined(OF_WINDOWS) # if defined(OF_X86_64) || defined(OF_X86) # define OF_ASM_LOOKUP # endif #endif #define OBJC_ERROR(...) \ { \ fprintf(stderr, "[objc @ " __FILE__ ":%d] ", __LINE__); \ fprintf(stderr, __VA_ARGS__); \ fprintf(stderr, "\n"); \ fflush(stderr); \ abort(); \ OF_UNREACHABLE \ } @interface DummyObject { Class _Nonnull isa; } + (void)initialize; + (bool)resolveClassMethod: (nonnull SEL)selector; + (bool)resolveInstanceMethod: (nonnull SEL)selector; @end