ObjFW  Diff

# endif
			}

			return page;
		}
	}

	if ((page = malloc(sizeof(*page))) == NULL)
		@throw [OFOutOfMemoryException
	page = of_malloc(1, sizeof(*page));
	@try {
		page->map = of_calloc(1, mapSize);
	} @catch (id e) {
		free(page);
		@throw e;
		    exceptionWithRequestedSize: sizeof(*page)];

	if ((page->map = calloc(1, mapSize)) == NULL)
		@throw [OFOutOfMemoryException
	}
	@try {
		page->page = mapPages(1);
	} @catch (id e) {
		free(page->map);
		free(page);
		@throw e;
		    exceptionWithRequestedSize: mapSize];

	}
	page->page = mapPages(1);
	of_explicit_memset(page->page, 0, pageSize);

# if !defined(OF_HAVE_COMPILER_TLS) && defined(OF_HAVE_THREADS)
	lastPage = of_tlskey_get(lastPageKey);
# endif

	page->previous = lastPage;

#if defined(HAVE_MMAP) && defined(HAVE_MLOCK) && defined(MAP_ANON)
	size_t pageSize = [OFSystemInfo pageSize];
	size_t numPages = OF_ROUND_UP_POW2(pageSize, size) / pageSize;
# if !defined(OF_HAVE_COMPILER_TLS) && defined(OF_HAVE_THREADS)
	struct page **preallocatedPages = of_tlskey_get(preallocatedPagesKey);
	size_t numPreallocatedPages;
# endif
	size_t i;

	if (preallocatedPages != NULL)
		@throw [OFInvalidArgumentException exception];

	preallocatedPages = calloc(numPages, sizeof(struct page));
	preallocatedPages = of_calloc(numPages, sizeof(struct page));
	if (preallocatedPages == NULL)
		@throw [OFOutOfMemoryException
		    exceptionWithRequestedSize: numPages * sizeof(struct page)];

# if !defined(OF_HAVE_COMPILER_TLS) && defined(OF_HAVE_THREADS)
	of_tlskey_set(preallocatedPagesKey, preallocatedPages);
# endif

	@try {
	for (size_t i = 0; i < numPages; i++)
		preallocatedPages[i] = addPage(false);
		for (i = 0; i < numPages; i++)
			preallocatedPages[i] = addPage(false);
	} @catch (id e) {
		for (size_t j = 0; j < i; j++)
			removePageIfEmpty(preallocatedPages[j]);

		free(preallocatedPages);
		preallocatedPages = NULL;

		@throw e;
	}

	numPreallocatedPages = numPages;
# if !defined(OF_HAVE_COMPILER_TLS) && defined(OF_HAVE_THREADS)
	of_tlskey_set(numPreallocatedPagesKey,
	    (void *)(uintptr_t)numPreallocatedPages);
# endif
#else
	@throw [OFNotImplementedException exceptionWithSelector: _cmd
							 object: self];
#endif
}

+ (instancetype)dataWithCount: (size_t)count
	allowsSwappableMemory: (bool)allowsSwappableMemory
{
	return [[[self alloc] initWithCount: count
		      allowsSwappableMemory: allowsSwappableMemory]
	    autorelease];
}

+ (instancetype)dataWithItemSize: (size_t)itemSize
			   count: (size_t)count
+ (instancetype)dataWithCount: (size_t)count
		     itemSize: (size_t)itemSize
	   allowsSwappableMemory: (bool)allowsSwappableMemory
{
	return [[[self alloc] initWithItemSize: itemSize
					 count: count
			 allowsSwappableMemory: allowsSwappableMemory]
	return [[[self alloc] initWithCount: count
				   itemSize: itemSize
		      allowsSwappableMemory: allowsSwappableMemory]
	    autorelease];
}

+ (instancetype)dataWithItems: (const void *)items
			count: (size_t)count
{
	OF_UNRECOGNIZED_SELECTOR
}

+ (instancetype)dataWithItems: (const void *)items
		     itemSize: (size_t)itemSize
			count: (size_t)count
		     itemSize: (size_t)itemSize
{
	OF_UNRECOGNIZED_SELECTOR
}

+ (instancetype)dataWithItemsNoCopy: (void *)items
			      count: (size_t)count
		       freeWhenDone: (bool)freeWhenDone
{
	OF_UNRECOGNIZED_SELECTOR
}

+ (instancetype)dataWithItemsNoCopy: (void *)items
			   itemSize: (size_t)itemSize
			      count: (size_t)count
			   itemSize: (size_t)itemSize
		       freeWhenDone: (bool)freeWhenDone
{
	OF_UNRECOGNIZED_SELECTOR
}

#ifdef OF_HAVE_FILES
+ (instancetype)dataWithContentsOfFile: (OFString *)path

	OF_UNRECOGNIZED_SELECTOR
}


- (instancetype)initWithCount: (size_t)count
	allowsSwappableMemory: (bool)allowsSwappableMemory
{
	return [self initWithItemSize: 1
				count: count
		allowsSwappableMemory: allowsSwappableMemory];
	return [self initWithCount: count
			  itemSize: 1
	     allowsSwappableMemory: allowsSwappableMemory];
}

- (instancetype)initWithItemSize: (size_t)itemSize
			   count: (size_t)count
	   allowsSwappableMemory: (bool)allowsSwappableMemory
- (instancetype)initWithCount: (size_t)count
		     itemSize: (size_t)itemSize
	allowsSwappableMemory: (bool)allowsSwappableMemory
{
	self = [super init];

	@try {
#if defined(HAVE_MMAP) && defined(HAVE_MLOCK) && defined(MAP_ANON)
		size_t pageSize = [OFSystemInfo pageSize];
#endif

		if (count > SIZE_MAX / itemSize)
			@throw [OFOutOfRangeException exception];

		if (allowsSwappableMemory) {
			_items = [self allocMemoryWithSize: itemSize
						     count: count];
			_items = of_malloc(count, itemSize);
			_freeWhenDone = true;
			memset(_items, 0, count * itemSize);
#if defined(HAVE_MMAP) && defined(HAVE_MLOCK) && defined(MAP_ANON)
		} else if (count * itemSize >= pageSize)
			_items = mapPages(OF_ROUND_UP_POW2(pageSize,
			    count * itemSize) / pageSize);
		else {
# if !defined(OF_HAVE_COMPILER_TLS) && defined(OF_HAVE_THREADS)

#else
		} else
			@throw [OFNotImplementedException
			    exceptionWithSelector: _cmd
					   object: nil];
#endif

		_itemSize = itemSize;
		_count = count;
		_itemSize = itemSize;
		_allowsSwappableMemory = allowsSwappableMemory;
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- (instancetype)initWithItems: (const void *)items
			count: (size_t)count
{
	OF_INVALID_INIT_METHOD
}

- (instancetype)initWithItems: (const void *)items
		     itemSize: (size_t)itemSize
			count: (size_t)count
		     itemSize: (size_t)itemSize
{
	OF_INVALID_INIT_METHOD
}

- (instancetype)initWithItemsNoCopy: (void *)items
			      count: (size_t)count
		       freeWhenDone: (bool)freeWhenDone
{
	OF_INVALID_INIT_METHOD
}

- (instancetype)initWithItemsNoCopy: (void *)items
			   itemSize: (size_t)itemSize
			      count: (size_t)count
			   itemSize: (size_t)itemSize
		       freeWhenDone: (bool)freeWhenDone
{
	OF_INVALID_INIT_METHOD
}

#ifdef OF_HAVE_FILES
- (instancetype)initWithContentsOfFile: (OFString *)path

{
	of_explicit_memset(_items, 0, _count * _itemSize);
}

- (id)copy
{
	OFSecureData *copy = [[OFSecureData alloc]
		    initWithCount: _count
		 initWithItemSize: _itemSize
			 itemSize: _itemSize
			    count: _count
	    allowsSwappableMemory: _allowsSwappableMemory];

	memcpy(copy.mutableItems, _items, _count * _itemSize);

	return copy;
}

- (id)mutableCopy
{
	OFSecureData *copy = [[OFSecureData alloc]
		    initWithCount: _count
		 initWithItemSize: _itemSize
			 itemSize: _itemSize
			    count: _count
	    allowsSwappableMemory: _allowsSwappableMemory];

	memcpy(copy.mutableItems, _items, _count * _itemSize);

	return copy;
}