ObjFW  Diff

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 * file.
 */

#include "config.h"

#include <string.h>

#include <assert.h>

#import "OFObject.h"

#import "macros.h"
#ifdef OF_THREADS
# import "threading.h"
# define NUM_SPINLOCKS 8	/* needs to be a power of 2 */
# define SPINLOCK_HASH(p) ((unsigned)((uintptr_t)p >> 4) & (NUM_SPINLOCKS - 1))
static of_spinlock_t spinlocks[NUM_SPINLOCKS];
#endif
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objc_getProperty(id self, SEL _cmd, ptrdiff_t offset, BOOL atomic)
{
	if (atomic) {
		id *ptr = (id*)(void*)((char*)self + offset);
#ifdef OF_THREADS
		unsigned hash = SPINLOCK_HASH(ptr);

		assert(of_spinlock_lock(&spinlocks[hash]));
		OF_ENSURE(of_spinlock_lock(&spinlocks[hash]));

		@try {
			return [[*ptr retain] autorelease];
		} @finally {
			assert(of_spinlock_unlock(&spinlocks[hash]));
			OF_ENSURE(of_spinlock_unlock(&spinlocks[hash]));
		}
#else
		return [[*ptr retain] autorelease];
#endif
	}

	return *(id*)(void*)((char*)self + offset);
}

void
objc_setProperty(id self, SEL _cmd, ptrdiff_t offset, id value, BOOL atomic,
    signed char copy)
{
	if (atomic) {
		id *ptr = (id*)(void*)((char*)self + offset);
#ifdef OF_THREADS
		unsigned hash = SPINLOCK_HASH(ptr);

		assert(of_spinlock_lock(&spinlocks[hash]));
		OF_ENSURE(of_spinlock_lock(&spinlocks[hash]));

		@try {
#endif
			id old = *ptr;

			switch (copy) {
			case 0:
				*ptr = [value retain];
				break;
			case 2:
				*ptr = [value mutableCopy];
				break;
			default:
				*ptr = [value copy];
			}

			[old release];
#ifdef OF_THREADS
		} @finally {
			assert(of_spinlock_unlock(&spinlocks[hash]));
			OF_ENSURE(of_spinlock_unlock(&spinlocks[hash]));
		}
#endif

		return;
	}

	id *ptr = (id*)(void*)((char*)self + offset);
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objc_getPropertyStruct(void *dest, const void *src, ptrdiff_t size, BOOL atomic,
    BOOL strong)
{
	if (atomic) {
#ifdef OF_THREADS
		unsigned hash = SPINLOCK_HASH(src);

		assert(of_spinlock_lock(&spinlocks[hash]));
		OF_ENSURE(of_spinlock_lock(&spinlocks[hash]));
#endif

		memcpy(dest, src, size);

#ifdef OF_THREADS
		assert(of_spinlock_unlock(&spinlocks[hash]));
		OF_ENSURE(of_spinlock_unlock(&spinlocks[hash]));
#endif

		return;
	}

	memcpy(dest, src, size);
}

void
objc_setPropertyStruct(void *dest, const void *src, ptrdiff_t size, BOOL atomic,
    BOOL strong)
{
	if (atomic) {
#ifdef OF_THREADS
		unsigned hash = SPINLOCK_HASH(src);

		assert(of_spinlock_lock(&spinlocks[hash]));
		OF_ENSURE(of_spinlock_lock(&spinlocks[hash]));
#endif

		memcpy(dest, src, size);

#ifdef OF_THREADS
		assert(of_spinlock_unlock(&spinlocks[hash]));
		OF_ENSURE(of_spinlock_unlock(&spinlocks[hash]));
#endif

		return;
	}

	memcpy(dest, src, size);
}
Fossil 2.23 [47362306a7] 2023-11-01 18:56:47
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