Unsafe.debug(size);
	private static void clear(Address ptr, long size) {		Unsafe.debug("clear");		Unsafe.debug(size);		while (size != 0) {			final int part = (int)Math.min(size, 0x7fffffffL);			Unsafe.debug(size);			Unsafe.clear(ptr, part);			ptr = Unsafe.add(ptr, part);			size -= part;		}	}