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;
}
Ejemplo n.º 4
0
/* 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;
}
Ejemplo n.º 5
0
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;
}