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#include "config.h"
#import <objc/objc.h>
#import "OFExceptions.h"
#import "atomic.h"
#define NUM_SPINLOCKS 8 /* needs to be a power of 2 */
#define SPINLOCK_HASH(p) ((uintptr_t)p >> 4) & (NUM_SPINLOCKS - 1)
static of_spinlock_t spinlocks[NUM_SPINLOCKS] = {};
id
objc_getProperty(id self, SEL _cmd, ptrdiff_t offset, BOOL atomic)
{
if (atomic) {
id *ptr = (id*)((char*)self + offset);
unsigned hash = SPINLOCK_HASH(ptr);
of_spinlock_lock(spinlocks[hash]);
@try {
return [[*ptr retain] autorelease];
} @finally {
of_spinlock_unlock(spinlocks[hash]);
}
}
return *(id*)((char*)self + offset);
}
void
objc_setProperty(id self, SEL _cmd, ptrdiff_t offset, id value, BOOL atomic,
BOOL copy)
{
if (atomic) {
id *ptr = (id*)((char*)self + offset);
unsigned hash = SPINLOCK_HASH(ptr);
of_spinlock_lock(spinlocks[hash]);
@try {
id old = *ptr;
switch (copy) {
case 0:
*ptr = [value retain];
break;
case 2:
/*
* Apple uses this to indicate that the copy
* should be mutable. Please hit them for
* abusing a poor BOOL!
*/
*ptr = [value mutableCopy];
break;
default:
*ptr = [value copy];
}
[old release];
} @finally {
of_spinlock_unlock(spinlocks[hash]);
}
return;
}
id *ptr = (id*)((char*)self + offset);
id old = *ptr;
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#include "config.h"
#import <objc/objc.h>
#import "OFExceptions.h"
#ifdef OF_THREADS
#import "threading.h"
#define NUM_SPINLOCKS 8 /* needs to be a power of 2 */
#define SPINLOCK_HASH(p) ((uintptr_t)p >> 4) & (NUM_SPINLOCKS - 1)
static of_spinlock_t spinlocks[NUM_SPINLOCKS];
#endif
BOOL
objc_properties_init()
{
#ifdef OF_THREADS
size_t i;
for (i = 0; i < NUM_SPINLOCKS; i++)
if (!of_spinlock_new(&spinlocks[i]))
return NO;
#endif
return YES;
}
id
objc_getProperty(id self, SEL _cmd, ptrdiff_t offset, BOOL atomic)
{
if (atomic) {
id *ptr = (id*)((char*)self + offset);
#ifdef OF_THREADS
unsigned hash = SPINLOCK_HASH(ptr);
of_spinlock_lock(&spinlocks[hash]);
@try {
return [[*ptr retain] autorelease];
} @finally {
of_spinlock_unlock(&spinlocks[hash]);
}
#else
return [[*ptr retain] autorelease];
#endif
}
return *(id*)((char*)self + offset);
}
void
objc_setProperty(id self, SEL _cmd, ptrdiff_t offset, id value, BOOL atomic,
BOOL copy)
{
if (atomic) {
id *ptr = (id*)((char*)self + offset);
#ifdef OF_THREADS
unsigned hash = SPINLOCK_HASH(ptr);
of_spinlock_lock(&spinlocks[hash]);
@try {
#endif
id old = *ptr;
switch (copy) {
case 0:
*ptr = [value retain];
break;
case 2:
/*
* Apple uses this to indicate that the copy
* should be mutable. Please hit them for
* abusing a poor BOOL!
*/
*ptr = [value mutableCopy];
break;
default:
*ptr = [value copy];
}
[old release];
#ifdef OF_THREADS
} @finally {
of_spinlock_unlock(&spinlocks[hash]);
}
#endif
return;
}
id *ptr = (id*)((char*)self + offset);
id old = *ptr;
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