ObjFW  Check-in [d5c4dedada]

		of_bitset_clear(page->map, chunkIndex + i);
}
#endif

@implementation OFSecureData
@synthesize allowsSwappableMemory = _allowsSwappableMemory;

#if defined(HAVE_MMAP) && defined(HAVE_MLOCK) && defined(MAP_ANON) && \
#if !defined(OF_HAVE_COMPILER_TLS) && defined(OF_HAVE_THREADS)
    !defined(OF_HAVE_COMPILER_TLS) && defined(OF_HAVE_THREADS)
+ (void)initialize
{
	if (self != [OFSecureData class])
		return;

	if (!of_tlskey_new(&firstPageKey) || !of_tlskey_new(&lastPageKey) ||
	    !of_tlskey_new(&preallocatedPagesKey) ||

- (instancetype)initWithItemSize: (size_t)itemSize
			   count: (size_t)count
	   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];
			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(HAVE_MMAP) && defined(HAVE_MLOCK) && defined(MAP_ANON)
# if !defined(OF_HAVE_COMPILER_TLS) && defined(OF_HAVE_THREADS)
			struct page *lastPage = of_tlskey_get(lastPageKey);
# endif

			for (struct page *page = lastPage; page != NULL;
			    page = page->previous) {
				_items = allocateMemory(page, count * itemSize);

				    count * itemSize);

				if (_items == NULL)
					@throw [OFOutOfMemoryException
					    exceptionWithRequestedSize:
					    count * itemSize];
			}
		}
#else
		} else
			@throw [OFNotImplementedException
			    exceptionWithSelector: _cmd
					   object: nil];
#endif
		}

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