108 // This is a list of subgraph infos built at dump time while 109 // archiving object subgraphs. 110 static KlassSubGraphInfo* _subgraph_info_list; 111 112 // Contains a list of ArchivedKlassSubGraphInfoRecords that is stored 113 // in the archive file and reloaded at runtime. 114 static int _num_archived_subgraph_info_records; 115 static Array<ArchivedKlassSubGraphInfoRecord>* _archived_subgraph_info_records; 116 117 // Archive object sub-graph starting from the given static field 118 // in Klass k's mirror. 119 static void archive_reachable_objects_from_static_field( 120 Klass* k, int field_ofset, BasicType field_type, TRAPS); 121 122 static KlassSubGraphInfo* find_subgraph_info(Klass *k); 123 static KlassSubGraphInfo* get_subgraph_info(Klass *k); 124 static int num_of_subgraph_infos(); 125 126 static size_t build_archived_subgraph_info_records(int num_records); 127 128 // Used by decode_with_archived_oop_encoding_mode 129 static address _narrow_oop_base; 130 static int _narrow_oop_shift; 131 132 #endif // INCLUDE_CDS_JAVA_HEAP 133 public: 134 static char* read_archived_subgraph_infos(char* buffer) NOT_CDS_JAVA_HEAP_RETURN_(buffer); 135 static void write_archived_subgraph_infos() NOT_CDS_JAVA_HEAP_RETURN; 136 static void initialize_from_archived_subgraph(Klass* k) NOT_CDS_JAVA_HEAP_RETURN; 137 138 // NarrowOops stored in the CDS archive may use a different encoding scheme 139 // than Universe::narrow_oop_{base,shift} -- see FileMapInfo::map_heap_regions_impl. 140 // To decode them, do not use CompressedOops::decode_not_null. Use this 141 // function instead. 142 inline static oop decode_with_archived_oop_encoding_mode(narrowOop v) NOT_CDS_JAVA_HEAP_RETURN_(NULL); 143 144 static void init_narrow_oop_decoding(address base, int shift) NOT_CDS_JAVA_HEAP_RETURN; 145 146 static void patch_archived_heap_embedded_pointers(MemRegion mem, address oopmap, 147 size_t oopmap_in_bits) NOT_CDS_JAVA_HEAP_RETURN; 148 149 static void init_archivable_static_fields(Thread* THREAD) NOT_CDS_JAVA_HEAP_RETURN; 150 static void archive_module_graph_objects(Thread* THREAD) NOT_CDS_JAVA_HEAP_RETURN; 151 152 #if INCLUDE_CDS_JAVA_HEAP 153 static ResourceBitMap calculate_oopmap(MemRegion region); 154 #endif 155 }; 156 #endif // SHARE_VM_MEMORY_HEAPSHARED_HPP | 108 // This is a list of subgraph infos built at dump time while 109 // archiving object subgraphs. 110 static KlassSubGraphInfo* _subgraph_info_list; 111 112 // Contains a list of ArchivedKlassSubGraphInfoRecords that is stored 113 // in the archive file and reloaded at runtime. 114 static int _num_archived_subgraph_info_records; 115 static Array<ArchivedKlassSubGraphInfoRecord>* _archived_subgraph_info_records; 116 117 // Archive object sub-graph starting from the given static field 118 // in Klass k's mirror. 119 static void archive_reachable_objects_from_static_field( 120 Klass* k, int field_ofset, BasicType field_type, TRAPS); 121 122 static KlassSubGraphInfo* find_subgraph_info(Klass *k); 123 static KlassSubGraphInfo* get_subgraph_info(Klass *k); 124 static int num_of_subgraph_infos(); 125 126 static size_t build_archived_subgraph_info_records(int num_records); 127 128 // Used by decode_from_archive 129 static address _narrow_oop_base; 130 static int _narrow_oop_shift; 131 132 #endif // INCLUDE_CDS_JAVA_HEAP 133 public: 134 static char* read_archived_subgraph_infos(char* buffer) NOT_CDS_JAVA_HEAP_RETURN_(buffer); 135 static void write_archived_subgraph_infos() NOT_CDS_JAVA_HEAP_RETURN; 136 static void initialize_from_archived_subgraph(Klass* k) NOT_CDS_JAVA_HEAP_RETURN; 137 138 // NarrowOops stored in the CDS archive may use a different encoding scheme 139 // than Universe::narrow_oop_{base,shift} -- see FileMapInfo::map_heap_regions_impl. 140 // To decode them, do not use CompressedOops::decode_not_null. Use this 141 // function instead. 142 inline static oop decode_from_archive(narrowOop v) NOT_CDS_JAVA_HEAP_RETURN_(NULL); 143 144 static void init_narrow_oop_decoding(address base, int shift) NOT_CDS_JAVA_HEAP_RETURN; 145 146 static void patch_archived_heap_embedded_pointers(MemRegion mem, address oopmap, 147 size_t oopmap_in_bits) NOT_CDS_JAVA_HEAP_RETURN; 148 149 static void init_archivable_static_fields(Thread* THREAD) NOT_CDS_JAVA_HEAP_RETURN; 150 static void archive_module_graph_objects(Thread* THREAD) NOT_CDS_JAVA_HEAP_RETURN; 151 152 #if INCLUDE_CDS_JAVA_HEAP 153 static ResourceBitMap calculate_oopmap(MemRegion region); 154 #endif 155 }; 156 #endif // SHARE_VM_MEMORY_HEAPSHARED_HPP |