216   static bool is_too_large_to_archive(size_t size);
217   static bool is_too_large_to_archive(oop obj);
218   static bool is_string_too_large_to_archive(oop string);
219   static void write(GrowableArrayCHeap<oop, mtClassShared>*, ArchiveHeapInfo* heap_info);
220   static address requested_address();  // requested address of the lowest achived heap object
221   static oop heap_roots_requested_address(); // requested address of HeapShared::roots()
222   static address buffered_heap_roots_addr() {
223     return offset_to_buffered_address<address>(_heap_roots_offset);
224   }
225   static size_t heap_roots_word_size() {
226     return _heap_roots_word_size;
227   }
228   static size_t get_filler_size_at(address buffered_addr);
229 
230   static void mark_native_pointer(oop src_obj, int offset);
231   static bool is_marked_as_native_pointer(ArchiveHeapInfo* heap_info, oop src_obj, int field_offset);
232   static oop source_obj_to_requested_obj(oop src_obj);
233   static oop buffered_addr_to_source_obj(address buffered_addr);
234   static address buffered_addr_to_requested_addr(address buffered_addr);
235 
236   // Archived heap object headers carry pre-computed narrow Klass ids calculated with the
237   // following scheme:
238   // 1) the encoding base must be the mapping start address.
239   // 2) shift must be large enough to result in an encoding range that covers the runtime Klass range.
240   //    That Klass range is defined by CDS archive size and runtime class space size. Luckily, the maximum
241   //    size can be predicted: archive size is assumed to be <1G, class space size capped at 3G, and at
242   //    runtime we put both regions adjacent to each other. Therefore, runtime Klass range size < 4G.
243   //    Since nKlass itself is 32 bit, our encoding range len is 4G, and since we set the base directly
244   //    at mapping start, these 4G are enough. Therefore, we don't need to shift at all (shift=0).
245   static constexpr int precomputed_narrow_klass_shift = 0;
246 
247 };
248 #endif // INCLUDE_CDS_JAVA_HEAP
249 #endif // SHARE_CDS_ARCHIVEHEAPWRITER_HPP

216   static bool is_too_large_to_archive(size_t size);
217   static bool is_too_large_to_archive(oop obj);
218   static bool is_string_too_large_to_archive(oop string);
219   static void write(GrowableArrayCHeap<oop, mtClassShared>*, ArchiveHeapInfo* heap_info);
220   static address requested_address();  // requested address of the lowest achived heap object
221   static oop heap_roots_requested_address(); // requested address of HeapShared::roots()
222   static address buffered_heap_roots_addr() {
223     return offset_to_buffered_address<address>(_heap_roots_offset);
224   }
225   static size_t heap_roots_word_size() {
226     return _heap_roots_word_size;
227   }
228   static size_t get_filler_size_at(address buffered_addr);
229 
230   static void mark_native_pointer(oop src_obj, int offset);
231   static bool is_marked_as_native_pointer(ArchiveHeapInfo* heap_info, oop src_obj, int field_offset);
232   static oop source_obj_to_requested_obj(oop src_obj);
233   static oop buffered_addr_to_source_obj(address buffered_addr);
234   static address buffered_addr_to_requested_addr(address buffered_addr);
235 











236 };
237 #endif // INCLUDE_CDS_JAVA_HEAP
238 #endif // SHARE_CDS_ARCHIVEHEAPWRITER_HPP