ObjFW  Artifact [82de8c2339]

Artifact 82de8c23393bcf876b3af40ef26c623a8032ca10ccb202a9de4ee42e54effc74:

• File src/runtime/private.h — part of check-in [49aee5736e] at 2020-01-25 20:04:54 on branch trunk — tlskey.m: Use hashtable from runtime on AmigaOS

  tlskey.m used OFMapTable only on AmigaOS. This became a problem when
  autorelease pools were moved into the runtime, as autorelease pools use
  TLS. The build then broke, as there suddenly was a dependency from the
  runtime on ObjFW.

  This now uses the hashtable from the runtime and also no longer uses
  OFList, thus fixing the build. As we always use the runtime on AmigaOS
  anyway, this is fine. (user: js, size: 11152) [annotate] [blame] [check-ins using] [more...]

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
 *               2018, 2019, 2020
 *   Jonathan Schleifer <js@nil.im>
 *
 * 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

typedef uint32_t (*_Nonnull objc_hashtable_hash_func)(const void *_Nonnull key);
typedef bool (*_Nonnull objc_hashtable_equal_func)(const void *_Nonnull key1,
    const void *_Nonnull key2);

struct objc_class {
	Class _Nonnull isa;
	Class _Nullable superclass;
	const char *_Nonnull name;
	unsigned long version;
	unsigned long info;
	long instanceSize;
	struct objc_ivar_list *_Nullable ivars;
	struct objc_method_list *_Nullable methodList;
	struct objc_dtable *_Nonnull DTable;
	Class _Nullable *_Nullable subclassList;
	void *_Nullable siblingClass;
	struct objc_protocol_list *_Nullable protocols;
	void *_Nullable GCObjectType;
	unsigned long ABIVersion;
	int32_t *_Nonnull *_Nullable ivarOffsets;
	struct objc_property_list *_Nullable propertyList;
};

enum objc_class_info {
	OBJC_CLASS_INFO_CLASS	    = 0x001,
	OBJC_CLASS_INFO_METACLASS   = 0x002,
	OBJC_CLASS_INFO_NEW_ABI	    = 0x010,
	OBJC_CLASS_INFO_SETUP	    = 0x100,
	OBJC_CLASS_INFO_LOADED	    = 0x200,
	OBJC_CLASS_INFO_DTABLE	    = 0x400,
	OBJC_CLASS_INFO_INITIALIZED = 0x800
};

struct objc_object {
	Class _Nonnull isa;
};

struct objc_selector {
	uintptr_t UID;
	const char *_Nullable typeEncoding;
};

struct objc_method {
	struct objc_selector selector;
	IMP _Nonnull implementation;
};

struct objc_method_list {
	struct objc_method_list *_Nullable next;
	unsigned int count;
	struct objc_method methods[1];
};

struct objc_category {
	const char *_Nonnull categoryName;
	const char *_Nonnull className;
	struct objc_method_list *_Nullable instanceMethods;
	struct objc_method_list *_Nullable classMethods;
	struct objc_protocol_list *_Nullable protocols;
};

struct objc_ivar {
	const char *_Nonnull name;
	const char *_Nonnull typeEncoding;
	unsigned int offset;
};

struct objc_ivar_list {
	unsigned int count;
	struct objc_ivar ivars[1];
};

struct objc_method_description {
	const char *_Nonnull name;
	const char *_Nonnull typeEncoding;
};

struct objc_method_description_list {
	int count;
	struct objc_method_description list[1];
};

struct objc_protocol_list {
	struct objc_protocol_list *_Nullable next;
	long count;
	Protocol *__unsafe_unretained _Nonnull list[1];
};

#if __has_attribute(__objc_root_class__)
__attribute__((__objc_root_class__))
#endif
@interface Protocol
{
@public
	Class _Nonnull isa;
	const char *_Nonnull name;
	struct objc_protocol_list *_Nullable protocolList;
	struct objc_method_description_list *_Nullable instanceMethods;
	struct objc_method_description_list *_Nullable classMethods;
}
@end

enum objc_property_attributes {
	OBJC_PROPERTY_READONLY	= 0x01,
	OBJC_PROPERTY_GETTER	= 0x02,
	OBJC_PROPERTY_ASSIGN	= 0x04,
	OBJC_PROPERTY_READWRITE	= 0x08,
	OBJC_PROPERTY_RETAIN	= 0x10,
	OBJC_PROPERTY_COPY	= 0x20,
	OBJC_PROPERTY_NONATOMIC	= 0x40,
	OBJC_PROPERTY_SETTER	= 0x80
};

enum objc_property_extended_attributes {
	OBJC_PROPERTY_SYNTHESIZED	=  0x1,
	OBJC_PROPERTY_DYNAMIC		=  0x2,
	OBJC_PROPERTY_PROTOCOL		=  0x3,
	OBJC_PROPERTY_ATOMIC		=  0x4,
	OBJC_PROPERTY_WEAK		=  0x8,
	OBJC_PROPERTY_STRONG		= 0x10,
	OBJC_PROPERTY_UNSAFE_UNRETAINED = 0x20
};

struct objc_property {
	const char *_Nonnull name;
	unsigned char attributes, extendedAttributes;
	struct {
		const char *_Nullable name;
		const char *_Nullable typeEncoding;
	} getter, setter;
};

struct objc_property_list {
	unsigned int count;
	struct objc_property_list *_Nullable next;
	struct objc_property properties[1];
};

struct objc_static_instances {
	const char *_Nonnull className;
	id _Nullable instances[1];
};

struct objc_symtab {
	unsigned long unknown;
	struct objc_selector *_Nullable selectorRefs;
	uint16_t classDefsCount;
	uint16_t categoryDefsCount;
	void *_Nonnull defs[1];
};

struct objc_module {
	unsigned long version;	/* 9 = non-fragile */
	unsigned long size;
	const char *_Nullable name;
	struct objc_symtab *_Nonnull symtab;
};

struct objc_hashtable_bucket {
	const void *_Nonnull key, *_Nonnull object;
	uint32_t hash;
};

struct objc_hashtable {
	objc_hashtable_hash_func hash;
	objc_hashtable_equal_func equal;
	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_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_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(
    objc_hashtable_hash_func, objc_hashtable_equal_func, 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_selector *_Nonnull);
extern void objc_register_all_selectors(struct objc_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_symtab *_Nonnull);
extern void objc_forget_pending_static_instances(void);
extern void objc_zero_weak_references(id _Nonnull);
#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;
}

@property (readonly, nonatomic) bool allowsWeakReference;

+ (void)initialize;
+ (bool)resolveClassMethod: (nonnull SEL)selector;
+ (bool)resolveInstanceMethod: (nonnull SEL)selector;
- (nonnull id)retain;
- (void)release;
- (nonnull id)autorelease;
- (nonnull id)copy;
- (nonnull id)mutableCopy;
- (bool)retainWeakReference;
@end