ObjFW  Diff

# import "mutex.h"
#endif

#ifdef OF_APPLE_RUNTIME
extern id _Nullable _objc_rootAutorelease(id _Nullable object);
#endif
#if defined(OF_HAVE_FORWARDING_TARGET_FOR_SELECTOR)
extern id of_forward(id, SEL, ...);
extern struct stret of_forward_stret(id, SEL, ...);
#else
# define of_forward of_method_not_found
# define of_forward_stret of_method_not_found_stret
#endif

struct pre_ivar {
	int retainCount;
#if !defined(OF_HAVE_ATOMIC_OPS) && !defined(OF_AMIGAOS)
	OFSpinlock retainCountSpinlock;
#endif
};

#define PRE_IVARS_ALIGN ((sizeof(struct pre_ivar) + \
    (OF_BIGGEST_ALIGNMENT - 1)) & ~(OF_BIGGEST_ALIGNMENT - 1))
#define PRE_IVARS ((struct pre_ivar *)(void *)((char *)self - PRE_IVARS_ALIGN))

static struct {
	Class isa;
} allocFailedException;

uint32_t of_hash_seed;

void *
OFAllocMemory(size_t count, size_t size)
{
	void *pointer;

	if OF_UNLIKELY (count == 0 || size == 0)

	gettimeofday(&tv, NULL);
	srand((unsigned)(tv.tv_sec ^ tv.tv_usec));
# endif
}
#endif

uint16_t
of_random16(void)
{
#if defined(HAVE_ARC4RANDOM)
	return arc4random();
#elif defined(HAVE_GETRANDOM)
	uint16_t buffer;

	OF_ENSURE(getrandom(&buffer, sizeof(buffer), 0) == sizeof(buffer));

# else
	return rand() & 0xFFFF;
# endif
#endif
}

uint32_t
of_random32(void)
{
#if defined(HAVE_ARC4RANDOM)
	return arc4random();
#elif defined(HAVE_GETRANDOM)
	uint32_t buffer;

	OF_ENSURE(getrandom(&buffer, sizeof(buffer), 0) == sizeof(buffer));

	return buffer;
#else
	return ((uint32_t)of_random16() << 16) | of_random16();
#endif
}

uint64_t
of_random64(void)
{
#if defined(HAVE_ARC4RANDOM_BUF)
	uint64_t buffer;

	arc4random_buf(&buffer, sizeof(buffer));

	return buffer;
#elif defined(HAVE_GETRANDOM)
	uint64_t buffer;

	OF_ENSURE(getrandom(&buffer, sizeof(buffer), 0) == sizeof(buffer));

	return buffer;
#else
	return ((uint64_t)of_random32() << 32) | of_random32();
#endif
}

static const char *
typeEncodingForSelector(Class class, SEL selector)
{
	Method method;

static void
enumerationMutationHandler(id object)
{
	@throw [OFEnumerationMutationException exceptionWithObject: object];
}

void OF_NO_RETURN_FUNC
of_method_not_found(id object, SEL selector)
{
	[object doesNotRecognizeSelector: selector];

	/*
	 * Just in case doesNotRecognizeSelector: returned, even though it must
	 * never return.
	 */
	abort();

	OF_UNREACHABLE
}

void OF_NO_RETURN_FUNC
of_method_not_found_stret(void *stret, id object, SEL selector)
{
	of_method_not_found(object, selector);
}

id
of_alloc_object(Class class, size_t extraSize, size_t extraAlignment,
    void **extra)
{
	OFObject *instance;
	size_t instanceSize;

	instanceSize = class_getInstanceSize(class);

	 * handler on load, we should not set ours, as this will break
	 * Foundation.
	 *
	 * Unfortunately, there is no way to check if a forward handler has
	 * already been set, so this is the best we can do.
	 */
	if (dlsym(RTLD_DEFAULT, "NSFoundationVersionNumber") == NULL)
		objc_setForwardHandler((void *)&of_forward,
		    (void *)&of_forward_stret);
#else
	objc_setForwardHandler((IMP)&of_forward, (IMP)&of_forward_stret);
#endif

	objc_setEnumerationMutationHandler(enumerationMutationHandler);

	do {
		of_hash_seed = of_random32();
	} while (of_hash_seed == 0);

#ifdef OF_OBJFW_RUNTIME
	objc_setTaggedPointerSecret(sizeof(uintptr_t) == 4
	    ? (uintptr_t)of_random32() : (uintptr_t)of_random64());
#endif
}

+ (void)unload
{
}

+ (void)initialize
{
}

+ (instancetype)alloc
{
	return of_alloc_object(self, 0, 0, NULL);
}

+ (instancetype)new
{
	return [[self alloc] init];
}