CF_EXPORT unsigned long _CFArrayFastEnumeration(CFArrayRef array, struct __objcFastEnumerationStateEquivalent *state, void *stackbuffer, unsigned long count) {
CHECK_FOR_MUTATION(array);
if (array->_count == 0) return 0;
enum { ATSTART = 0, ATEND = 1 };
switch (__CFArrayGetType(array)) {
case __kCFArrayImmutable:
if (state->state == ATSTART) { /* first time */
static const unsigned long const_mu = 1;
state->state = ATEND;
state->mutationsPtr = (unsigned long *)&const_mu;
state->itemsPtr = (unsigned long *)__CFArrayGetBucketsPtr(array);
return array->_count;
}
return 0;
case __kCFArrayDeque:
if (state->state == ATSTART) { /* first time */
state->state = ATEND;
state->mutationsPtr = (unsigned long *)&array->_mutations;
state->itemsPtr = (unsigned long *)__CFArrayGetBucketsPtr(array);
return array->_count;
}
return 0;
}
return 0;
}
__private_extern__ CFArrayRef __CFArrayCreateCopy0(CFAllocatorRef allocator, CFArrayRef array) {
CFArrayRef result;
const CFArrayCallBacks *cb;
struct __CFArrayBucket *buckets;
CFAllocatorRef bucketsAllocator;
void* bucketsBase;
CFIndex numValues = CFArrayGetCount(array);
CFIndex idx;
if (CF_IS_OBJC(__kCFArrayTypeID, array)) {
cb = &kCFTypeArrayCallBacks;
} else {
cb = __CFArrayGetCallBacks(array);
}
result = __CFArrayInit(allocator, __kCFArrayImmutable, numValues, cb);
cb = __CFArrayGetCallBacks(result); // GC: use the new array's callbacks so we don't leak.
buckets = __CFArrayGetBucketsPtr(result);
bucketsAllocator = isStrongMemory(result) ? allocator : kCFAllocatorNull;
bucketsBase = CF_IS_COLLECTABLE_ALLOCATOR(bucketsAllocator) ? (void *)auto_zone_base_pointer(objc_collectableZone(), buckets) : NULL;
for (idx = 0; idx < numValues; idx++) {
const void *value = CFArrayGetValueAtIndex(array, idx);
if (NULL != cb->retain) {
value = (void *)INVOKE_CALLBACK2(cb->retain, allocator, value);
}
__CFAssignWithWriteBarrier((void **)&buckets->_item, (void *)value);
buckets++;
}
__CFArraySetCount(result, numValues);
return result;
}
__private_extern__ CFArrayRef __CFArrayCreate0(CFAllocatorRef allocator, const void **values, CFIndex numValues, const CFArrayCallBacks *callBacks) {
CFArrayRef result;
const CFArrayCallBacks *cb;
struct __CFArrayBucket *buckets;
CFAllocatorRef bucketsAllocator;
void* bucketsBase;
CFIndex idx;
CFAssert2(0 <= numValues, __kCFLogAssertion, "%s(): numValues (%d) cannot be less than zero", __PRETTY_FUNCTION__, numValues);
result = __CFArrayInit(allocator, __kCFArrayImmutable, numValues, callBacks);
cb = __CFArrayGetCallBacks(result);
buckets = __CFArrayGetBucketsPtr(result);
bucketsAllocator = isStrongMemory(result) ? allocator : kCFAllocatorNull;
bucketsBase = CF_IS_COLLECTABLE_ALLOCATOR(bucketsAllocator) ? (void *)auto_zone_base_pointer(objc_collectableZone(), buckets) : NULL;
if (NULL != cb->retain) {
for (idx = 0; idx < numValues; idx++) {
__CFAssignWithWriteBarrier((void **)&buckets->_item, (void *)INVOKE_CALLBACK2(cb->retain, allocator, *values));
values++;
buckets++;
}
}
else {
for (idx = 0; idx < numValues; idx++) {
__CFAssignWithWriteBarrier((void **)&buckets->_item, (void *)*values);
values++;
buckets++;
}
}
__CFArraySetCount(result, numValues);
return result;
}
/* This shouldn't be called if the array count is 0. */
CF_INLINE struct __CFArrayBucket *__CFArrayGetBucketAtIndex(CFArrayRef array, CFIndex idx) {
switch (__CFArrayGetType(array)) {
case __kCFArrayImmutable:
case __kCFArrayDeque:
return __CFArrayGetBucketsPtr(array) + idx;
}
return NULL;
}
static void __CFArrayReleaseValues(CFArrayRef array, CFRange range, bool releaseStorageIfPossible) {
const CFArrayCallBacks *cb = __CFArrayGetCallBacks(array);
CFAllocatorRef allocator;
CFIndex idx;
switch (__CFArrayGetType(array)) {
case __kCFArrayImmutable:
if (NULL != cb->release && 0 < range.length && !hasBeenFinalized(array)) {
// if we've been finalized then we know that
// 1) we're using the standard callback on GC memory
// 2) the slots don't' need to be zeroed
struct __CFArrayBucket *buckets = __CFArrayGetBucketsPtr(array);
allocator = __CFGetAllocator(array);
for (idx = 0; idx < range.length; idx++) {
INVOKE_CALLBACK2(cb->release, allocator, buckets[idx + range.location]._item);
buckets[idx + range.location]._item = NULL; // GC: break strong reference.
}
}
break;
case __kCFArrayDeque: {
struct __CFArrayDeque *deque = (struct __CFArrayDeque *)array->_store;
if (0 < range.length && NULL != deque && !hasBeenFinalized(array)) {
struct __CFArrayBucket *buckets = __CFArrayGetBucketsPtr(array);
if (NULL != cb->release) {
allocator = __CFGetAllocator(array);
for (idx = 0; idx < range.length; idx++) {
INVOKE_CALLBACK2(cb->release, allocator, buckets[idx + range.location]._item);
buckets[idx + range.location]._item = NULL; // GC: break strong reference.
}
} else {
for (idx = 0; idx < range.length; idx++) {
buckets[idx + range.location]._item = NULL; // GC: break strong reference.
}
}
}
if (releaseStorageIfPossible && 0 == range.location && __CFArrayGetCount(array) == range.length) {
allocator = __CFGetAllocator(array);
if (NULL != deque) if (!CF_IS_COLLECTABLE_ALLOCATOR(allocator)) CFAllocatorDeallocate(allocator, deque);
__CFArraySetCount(array, 0); // GC: _count == 0 ==> _store == NULL.
((struct __CFArray *)array)->_store = NULL;
}
break;
}
}
}
static void __CFArrayReleaseValues(CFArrayRef array, CFRange range, bool releaseStorageIfPossible) {
const CFArrayCallBacks *cb = __CFArrayGetCallBacks(array);
CFAllocatorRef allocator;
CFIndex idx;
switch (__CFArrayGetType(array)) {
case __kCFArrayImmutable:
if (NULL != cb->release && 0 < range.length) {
struct __CFArrayBucket *buckets = __CFArrayGetBucketsPtr(array);
allocator = __CFGetAllocator(array);
for (idx = 0; idx < range.length; idx++) {
INVOKE_CALLBACK2(cb->release, allocator, buckets[idx + range.location]._item);
}
memset(buckets + range.location, 0, sizeof(struct __CFArrayBucket) * range.length);
}
break;
case __kCFArrayDeque: {
struct __CFArrayDeque *deque = (struct __CFArrayDeque *)array->_store;
if (0 < range.length && NULL != deque) {
struct __CFArrayBucket *buckets = __CFArrayGetBucketsPtr(array);
if (NULL != cb->release) {
allocator = __CFGetAllocator(array);
for (idx = 0; idx < range.length; idx++) {
INVOKE_CALLBACK2(cb->release, allocator, buckets[idx + range.location]._item);
}
}
memset(buckets + range.location, 0, sizeof(struct __CFArrayBucket) * range.length);
}
if (releaseStorageIfPossible && 0 == range.location && __CFArrayGetCount(array) == range.length) {
allocator = __CFGetAllocator(array);
if (NULL != deque) CFAllocatorDeallocate(allocator, deque);
__CFArraySetCount(array, 0);
((struct __CFArray *)array)->_store = NULL;
}
break;
}
}
}
void CFArrayGetValues(CFArrayRef array, CFRange range, const void **values) {
CF_OBJC_FUNCDISPATCHV(__kCFArrayTypeID, void, (NSArray *)array, getObjects:(id *)values range:NSMakeRange(range.location, range.length));
__CFGenericValidateType(array, __kCFArrayTypeID);
__CFArrayValidateRange(array, range, __PRETTY_FUNCTION__);
CFAssert1(NULL != values, __kCFLogAssertion, "%s(): pointer to values may not be NULL", __PRETTY_FUNCTION__);
CHECK_FOR_MUTATION(array);
if (0 < range.length) {
switch (__CFArrayGetType(array)) {
case __kCFArrayImmutable:
case __kCFArrayDeque:
objc_memmove_collectable(values, __CFArrayGetBucketsPtr(array) + range.location, range.length * sizeof(struct __CFArrayBucket));
break;
}
}
}
__private_extern__ CFArrayRef __CFArrayCreateTransfer(CFAllocatorRef allocator, const void **values, CFIndex numValues) {
CFAssert2(0 <= numValues, __kCFLogAssertion, "%s(): numValues (%d) cannot be less than zero", __PRETTY_FUNCTION__, numValues);
UInt32 flags = __kCFArrayImmutable;
__CFBitfieldSetValue(flags, 31, 2, 0);
__CFBitfieldSetValue(flags, 3, 2, __kCFArrayHasCFTypeCallBacks);
UInt32 size = __CFArrayGetSizeOfType(flags) - sizeof(CFRuntimeBase);
size += numValues * sizeof(struct __CFArrayBucket);
struct __CFArray *memory = (struct __CFArray*)_CFRuntimeCreateInstance(allocator, __kCFArrayTypeID, size, NULL);
if (NULL == memory) {
return NULL;
}
__CFBitfieldSetValue(memory->_base._cfinfo[CF_INFO_BITS], 6, 0, flags);
__CFArraySetCount(memory, numValues);
memmove(__CFArrayGetBucketsPtr(memory), values, sizeof(void *) * numValues);
if (__CFOASafe) __CFSetLastAllocationEventName(memory, "CFArray (immutable)");
return (CFArrayRef)memory;
}
