__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;
}
static void __CFArrayDeallocate(CFTypeRef cf) {
CFArrayRef array = (CFArrayRef)cf;
BEGIN_MUTATION(array);
#if DEPLOYMENT_TARGET_MACOSX
// Under GC, keep contents alive when we know we can, either standard callbacks or NULL
// if (__CFBitfieldGetValue(cf->info, 5, 4)) return; // bits only ever set under GC
CFAllocatorRef allocator = __CFGetAllocator(array);
if (CF_IS_COLLECTABLE_ALLOCATOR(allocator)) {
// XXX_PCB keep array intact during finalization.
const CFArrayCallBacks *cb = __CFArrayGetCallBacks(array);
if (cb->retain == NULL && cb->release == NULL) {
END_MUTATION(array);
return;
}
if (cb == &kCFTypeArrayCallBacks || cb->release == kCFTypeArrayCallBacks.release) {
markFinalized(cf);
for (CFIndex idx = 0; idx < __CFArrayGetCount(array); idx++) {
const void *item = CFArrayGetValueAtIndex(array, 0 + idx);
kCFTypeArrayCallBacks.release(kCFAllocatorSystemDefault, item);
}
END_MUTATION(array);
return;
}
}
#endif
__CFArrayReleaseValues(array, CFRangeMake(0, __CFArrayGetCount(array)), true);
END_MUTATION(array);
}
static CFStringRef __CFArrayCopyDescription(CFTypeRef cf) {
CFArrayRef array = (CFArrayRef)cf;
CFMutableStringRef result;
const CFArrayCallBacks *cb;
CFAllocatorRef allocator;
CFIndex idx, cnt;
cnt = __CFArrayGetCount(array);
allocator = CFGetAllocator(array);
result = CFStringCreateMutable(allocator, 0);
switch (__CFArrayGetType(array)) {
case __kCFArrayImmutable:
CFStringAppendFormat(result, NULL, CFSTR("<CFArray %p [%p]>{type = immutable, count = %lu, values = (%s"), cf, allocator, (unsigned long)cnt, cnt ? "\n" : "");
break;
case __kCFArrayDeque:
CFStringAppendFormat(result, NULL, CFSTR("<CFArray %p [%p]>{type = mutable-small, count = %lu, values = (%s"), cf, allocator, (unsigned long)cnt, cnt ? "\n" : "");
break;
}
cb = __CFArrayGetCallBacks(array);
for (idx = 0; idx < cnt; idx++) {
CFStringRef desc = NULL;
const void *val = __CFArrayGetBucketAtIndex(array, idx)->_item;
if (NULL != cb->copyDescription) {
desc = (CFStringRef)INVOKE_CALLBACK1(cb->copyDescription, val);
}
if (NULL != desc) {
CFStringAppendFormat(result, NULL, CFSTR("\t%lu : %@\n"), (unsigned long)idx, desc);
CFRelease(desc);
} else {
CFStringAppendFormat(result, NULL, CFSTR("\t%lu : <%p>\n"), (unsigned long)idx, val);
}
}
CFStringAppend(result, CFSTR(")}"));
return result;
}
void CFArraySetValueAtIndex(CFMutableArrayRef array, CFIndex idx, const void *value) {
CF_OBJC_FUNCDISPATCHV(__kCFArrayTypeID, void, (NSMutableArray *)array, setObject:(id)value atIndex:(NSUInteger)idx);
__CFGenericValidateType(array, __kCFArrayTypeID);
CFAssert1(__CFArrayGetType(array) != __kCFArrayImmutable, __kCFLogAssertion, "%s(): array is immutable", __PRETTY_FUNCTION__);
CFAssert2(0 <= idx && idx <= __CFArrayGetCount(array), __kCFLogAssertion, "%s(): index (%d) out of bounds", __PRETTY_FUNCTION__, idx);
CHECK_FOR_MUTATION(array);
if (idx == __CFArrayGetCount(array)) {
_CFArrayReplaceValues(array, CFRangeMake(idx, 0), &value, 1);
} else {
BEGIN_MUTATION(array);
const void *old_value;
const CFArrayCallBacks *cb = __CFArrayGetCallBacks(array);
CFAllocatorRef allocator = __CFGetAllocator(array);
struct __CFArrayBucket *bucket = __CFArrayGetBucketAtIndex(array, idx);
if (NULL != cb->retain && !hasBeenFinalized(array)) {
value = (void *)INVOKE_CALLBACK2(cb->retain, allocator, value);
}
old_value = bucket->_item;
__CFAssignWithWriteBarrier((void **)&bucket->_item, (void *)value); // GC: handles deque/CFStorage cases.
if (NULL != cb->release && !hasBeenFinalized(array)) {
INVOKE_CALLBACK2(cb->release, allocator, old_value);
}
array->_mutations++;
END_MUTATION(array);
}
}
__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;
}
static CFArrayRef __CFArrayInit(CFAllocatorRef allocator, UInt32 flags, CFIndex capacity, const CFArrayCallBacks *callBacks) {
struct __CFArray *memory;
UInt32 size;
__CFBitfieldSetValue(flags, 31, 2, 0);
if (CF_IS_COLLECTABLE_ALLOCATOR(allocator)) {
if (!callBacks || (callBacks->retain == NULL && callBacks->release == NULL)) {
__CFBitfieldSetValue(flags, 4, 4, 1); // setWeak
}
}
if (__CFArrayCallBacksMatchNull(callBacks)) {
__CFBitfieldSetValue(flags, 3, 2, __kCFArrayHasNullCallBacks);
} else if (__CFArrayCallBacksMatchCFType(callBacks)) {
__CFBitfieldSetValue(flags, 3, 2, __kCFArrayHasCFTypeCallBacks);
} else {
__CFBitfieldSetValue(flags, 3, 2, __kCFArrayHasCustomCallBacks);
}
size = __CFArrayGetSizeOfType(flags) - sizeof(CFRuntimeBase);
switch (__CFBitfieldGetValue(flags, 1, 0)) {
case __kCFArrayImmutable:
size += capacity * sizeof(struct __CFArrayBucket);
break;
case __kCFArrayDeque:
break;
}
memory = (struct __CFArray*)_CFRuntimeCreateInstance(allocator, __kCFArrayTypeID, size, NULL);
if (NULL == memory) {
return NULL;
}
__CFBitfieldSetValue(memory->_base._cfinfo[CF_INFO_BITS], 6, 0, flags);
__CFArraySetCount((CFArrayRef)memory, 0);
switch (__CFBitfieldGetValue(flags, 1, 0)) {
case __kCFArrayImmutable:
if (isWeakMemory(memory)) { // if weak, don't scan
auto_zone_set_unscanned(objc_collectableZone(), memory);
}
if (__CFOASafe) __CFSetLastAllocationEventName(memory, "CFArray (immutable)");
break;
case __kCFArrayDeque:
if (__CFOASafe) __CFSetLastAllocationEventName(memory, "CFArray (mutable-variable)");
((struct __CFArray *)memory)->_mutations = 1;
((struct __CFArray *)memory)->_mutInProgress = 0;
((struct __CFArray*)memory)->_store = NULL;
break;
}
if (__kCFArrayHasCustomCallBacks == __CFBitfieldGetValue(flags, 3, 2)) {
CFArrayCallBacks *cb = (CFArrayCallBacks *)__CFArrayGetCallBacks((CFArrayRef)memory);
*cb = *callBacks;
FAULT_CALLBACK((void **)&(cb->retain));
FAULT_CALLBACK((void **)&(cb->release));
FAULT_CALLBACK((void **)&(cb->copyDescription));
FAULT_CALLBACK((void **)&(cb->equal));
}
return (CFArrayRef)memory;
}
static Boolean __CFArrayEqual(CFTypeRef cf1, CFTypeRef cf2) {
CFArrayRef array1 = (CFArrayRef)cf1;
CFArrayRef array2 = (CFArrayRef)cf2;
const CFArrayCallBacks *cb1, *cb2;
CFIndex idx, cnt;
if (array1 == array2) return true;
cnt = __CFArrayGetCount(array1);
if (cnt != __CFArrayGetCount(array2)) return false;
cb1 = __CFArrayGetCallBacks(array1);
cb2 = __CFArrayGetCallBacks(array2);
if (cb1->equal != cb2->equal) return false;
if (0 == cnt) return true; /* after function comparison! */
for (idx = 0; idx < cnt; idx++) {
const void *val1 = __CFArrayGetBucketAtIndex(array1, idx)->_item;
const void *val2 = __CFArrayGetBucketAtIndex(array2, idx)->_item;
if (val1 != val2) {
if (NULL == cb1->equal) return false;
if (!INVOKE_CALLBACK2(cb1->equal, val1, val2)) return false;
}
}
return true;
}
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;
}
}
}
__private_extern__ CFMutableArrayRef __CFArrayCreateMutableCopy0(CFAllocatorRef allocator, CFIndex capacity, CFArrayRef array) {
CFMutableArrayRef result;
const CFArrayCallBacks *cb;
CFIndex idx, numValues = CFArrayGetCount(array);
UInt32 flags;
if (CF_IS_OBJC(__kCFArrayTypeID, array)) {
cb = &kCFTypeArrayCallBacks;
}
else {
cb = __CFArrayGetCallBacks(array);
}
flags = __kCFArrayDeque;
result = (CFMutableArrayRef)__CFArrayInit(allocator, flags, capacity, cb);
if (0 == capacity) _CFArraySetCapacity(result, numValues);
for (idx = 0; idx < numValues; idx++) {
const void *value = CFArrayGetValueAtIndex(array, idx);
CFArrayAppendValue(result, value);
}
return result;
}
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 CFArraySortValues(CFMutableArrayRef array, CFRange range, CFComparatorFunction comparator, void *context) {
FAULT_CALLBACK((void **)&(comparator));
__CFArrayValidateRange(array, range, __PRETTY_FUNCTION__);
CFAssert1(NULL != comparator, __kCFLogAssertion, "%s(): pointer to comparator function may not be NULL", __PRETTY_FUNCTION__);
Boolean immutable = false;
if (CF_IS_OBJC(__kCFArrayTypeID, array)) {
BOOL result;
CF_OBJC_CALL1(BOOL, result, array, "isKindOfClass:", objc_lookUpClass("NSMutableArray"));
immutable = !result;
} else if (__kCFArrayImmutable == __CFArrayGetType(array)) {
immutable = true;
}
const CFArrayCallBacks *cb = NULL;
if (CF_IS_OBJC(__kCFArrayTypeID, array)) {
cb = &kCFTypeArrayCallBacks;
} else {
cb = __CFArrayGetCallBacks(array);
}
if (!immutable && ((cb->retain && !cb->release) || (!cb->retain && cb->release))) {
__CFZSort(array, range, comparator, context);
return;
}
if (range.length < 2) {
return;
}
// implemented abstractly, careful!
const void **values, *buffer[256];
values = (range.length <= 256) ? (const void **)buffer : (const void **)CFAllocatorAllocate(kCFAllocatorSystemDefault, range.length * sizeof(void *), 0); // GC OK
CFArrayGetValues(array, range, values);
struct _acompareContext ctx;
ctx.func = comparator;
ctx.context = context;
CFQSortArray(values, range.length, sizeof(void *), (CFComparatorFunction)__CFArrayCompareValues, &ctx);
if (!immutable) CFArrayReplaceValues(array, range, values, range.length);
if (values != buffer) CFAllocatorDeallocate(kCFAllocatorSystemDefault, values);
}
// This function does no ObjC dispatch or argument checking;
// It should only be called from places where that dispatch and check has already been done, or NSCFArray
void _CFArrayReplaceValues(CFMutableArrayRef array, CFRange range, const void **newValues, CFIndex newCount) {
CHECK_FOR_MUTATION(array);
BEGIN_MUTATION(array);
const CFArrayCallBacks *cb;
CFIndex idx, cnt, futureCnt;
const void **newv, *buffer[256];
cnt = __CFArrayGetCount(array);
futureCnt = cnt - range.length + newCount;
CFAssert1(newCount <= futureCnt, __kCFLogAssertion, "%s(): internal error 1", __PRETTY_FUNCTION__);
cb = __CFArrayGetCallBacks(array);
CFAllocatorRef allocator = __CFGetAllocator(array);
/* Retain new values if needed, possibly allocating a temporary buffer for them */
if (NULL != cb->retain && !hasBeenFinalized(array)) {
newv = (newCount <= 256) ? (const void **)buffer : (const void **)CFAllocatorAllocate(kCFAllocatorSystemDefault, newCount * sizeof(void *), 0); // GC OK
if (newv != buffer && __CFOASafe) __CFSetLastAllocationEventName(newv, "CFArray (temp)");
for (idx = 0; idx < newCount; idx++) {
newv[idx] = (void *)INVOKE_CALLBACK2(cb->retain, allocator, (void *)newValues[idx]);
}
} else {
newv = newValues;
}
array->_mutations++;
/* Now, there are three regions of interest, each of which may be empty:
* A: the region from index 0 to one less than the range.location
* B: the region of the range
* C: the region from range.location + range.length to the end
* Note that index 0 is not necessarily at the lowest-address edge
* of the available storage. The values in region B need to get
* released, and the values in regions A and C (depending) need
* to get shifted if the number of new values is different from
* the length of the range being replaced.
*/
if (0 < range.length) {
__CFArrayReleaseValues(array, range, false);
}
// region B elements are now "dead"
if (0) {
} else if (NULL == array->_store) {
if (0) {
} else if (0 <= futureCnt) {
struct __CFArrayDeque *deque;
CFIndex capacity = __CFArrayDequeRoundUpCapacity(futureCnt);
CFIndex size = sizeof(struct __CFArrayDeque) + capacity * sizeof(struct __CFArrayBucket);
deque = (struct __CFArrayDeque *)CFAllocatorAllocate(_CFConvertAllocatorToGCRefZeroEquivalent(allocator), size, isStrongMemory(array) ? __kCFAllocatorGCScannedMemory : 0);
if (__CFOASafe) __CFSetLastAllocationEventName(deque, "CFArray (store-deque)");
deque->_leftIdx = (capacity - newCount) / 2;
deque->_capacity = capacity;
__CFAssignWithWriteBarrier((void **)&array->_store, (void *)deque);
}
} else { // Deque
// reposition regions A and C for new region B elements in gap
if (0) {
} else if (range.length != newCount) {
__CFArrayRepositionDequeRegions(array, range, newCount);
}
}
// copy in new region B elements
if (0 < newCount) {
if (0) {
} else { // Deque
struct __CFArrayDeque *deque = (struct __CFArrayDeque *)array->_store;
struct __CFArrayBucket *raw_buckets = (struct __CFArrayBucket *)((uint8_t *)deque + sizeof(struct __CFArrayDeque));
objc_memmove_collectable(raw_buckets + deque->_leftIdx + range.location, newv, newCount * sizeof(struct __CFArrayBucket));
}
}
__CFArraySetCount(array, futureCnt);
if (newv != buffer && newv != newValues) CFAllocatorDeallocate(kCFAllocatorSystemDefault, newv);
END_MUTATION(array);
}
CFIndex CFArrayGetLastIndexOfValue(CFArrayRef array, CFRange range, const void *value) {
CFIndex idx;
__CFGenericValidateType(array, __kCFArrayTypeID);
__CFArrayValidateRange(array, range, __PRETTY_FUNCTION__);
CHECK_FOR_MUTATION(array);
const CFArrayCallBacks *cb = CF_IS_OBJC(CFArrayGetTypeID(), array) ? &kCFTypeArrayCallBacks : __CFArrayGetCallBacks(array);
for (idx = range.length; idx--;) {
const void *item = CFArrayGetValueAtIndex(array, range.location + idx);
if (value == item || (cb->equal && INVOKE_CALLBACK2(cb->equal, value, item)))
return idx + range.location;
}
return kCFNotFound;
}
Boolean CFArrayContainsValue(CFArrayRef array, CFRange range, const void *value) {
CFIndex idx;
__CFGenericValidateType(array, __kCFArrayTypeID);
__CFArrayValidateRange(array, range, __PRETTY_FUNCTION__);
CHECK_FOR_MUTATION(array);
const CFArrayCallBacks *cb = CF_IS_OBJC(CFArrayGetTypeID(), array) ? &kCFTypeArrayCallBacks : __CFArrayGetCallBacks(array);
for (idx = 0; idx < range.length; idx++) {
const void *item = CFArrayGetValueAtIndex(array, range.location + idx);
if (value == item || (cb->equal && INVOKE_CALLBACK2(cb->equal, value, item))) {
return true;
}
}
return false;
}
