1 /*
2 * Copyright (c) 2018, 2026, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_CDS_HEAPSHARED_HPP
26 #define SHARE_CDS_HEAPSHARED_HPP
27
28 #include "cds/aotMetaspace.hpp"
29 #include "cds/dumpTimeClassInfo.hpp"
30 #include "classfile/compactHashtable.hpp"
31 #include "classfile/javaClasses.hpp"
32 #include "gc/shared/gc_globals.hpp"
33 #include "memory/allocation.hpp"
34 #include "memory/allStatic.hpp"
35 #include "oops/compressedOops.hpp"
36 #include "oops/oop.hpp"
37 #include "oops/oopHandle.hpp"
38 #include "oops/oopsHierarchy.hpp"
39 #include "utilities/growableArray.hpp"
40 #include "utilities/hashTable.hpp"
41
42 #if INCLUDE_CDS_JAVA_HEAP
43 class FileMapInfo;
44 class KlassSubGraphInfo;
45 class MetaspaceObjToOopHandleTable;
46 class ResourceBitMap;
47
48 struct ArchivableStaticFieldInfo;
49
50 #define ARCHIVED_BOOT_LAYER_CLASS "jdk/internal/module/ArchivedBootLayer"
51 #define ARCHIVED_BOOT_LAYER_FIELD "archivedBootLayer"
52
53 // A dump time sub-graph info for Klass _k. It includes the entry points
54 // (static fields in _k's mirror) of the archived sub-graphs reachable
55 // from _k's mirror. It also contains a list of Klasses of the objects
56 // within the sub-graphs.
57 class KlassSubGraphInfo: public CHeapObj<mtClass> {
58 private:
59 // The class that contains the static field(s) as the entry point(s)
60 // of archived object sub-graph(s).
61 Klass* _k;
62 // A list of classes need to be loaded and initialized before the archived
63 // object sub-graphs can be accessed at runtime.
64 GrowableArray<Klass*>* _subgraph_object_klasses;
65 // A list of _k's static fields as the entry points of archived sub-graphs.
66 // For each entry field, it is a tuple of field_offset, field_value
67 GrowableArray<int>* _subgraph_entry_fields;
68
69 // Does this KlassSubGraphInfo belong to the archived full module graph
70 bool _is_full_module_graph;
71
72 // Does this KlassSubGraphInfo references any classes that were loaded while
73 // JvmtiExport::is_early_phase()!=true. If so, this KlassSubGraphInfo cannot be
74 // used at runtime if JVMTI ClassFileLoadHook is enabled.
75 bool _has_non_early_klasses;
76 static bool is_non_early_klass(Klass* k);
77 static void check_allowed_klass(InstanceKlass* ik);
78 public:
79 KlassSubGraphInfo(Klass* k, bool is_full_module_graph) :
80 _k(k), _subgraph_object_klasses(nullptr),
81 _subgraph_entry_fields(nullptr),
82 _is_full_module_graph(is_full_module_graph),
83 _has_non_early_klasses(false) {}
84
85 ~KlassSubGraphInfo() {
86 if (_subgraph_object_klasses != nullptr) {
87 delete _subgraph_object_klasses;
88 }
89 if (_subgraph_entry_fields != nullptr) {
90 delete _subgraph_entry_fields;
91 }
92 };
93
94 Klass* klass() { return _k; }
95 GrowableArray<Klass*>* subgraph_object_klasses() {
96 return _subgraph_object_klasses;
97 }
98 GrowableArray<int>* subgraph_entry_fields() {
99 return _subgraph_entry_fields;
100 }
101 void add_subgraph_entry_field(int static_field_offset, oop v);
102 void add_subgraph_object_klass(Klass *orig_k);
103 int num_subgraph_object_klasses() {
104 return _subgraph_object_klasses == nullptr ? 0 :
105 _subgraph_object_klasses->length();
106 }
107 bool is_full_module_graph() const { return _is_full_module_graph; }
108 bool has_non_early_klasses() const { return _has_non_early_klasses; }
109 };
110
111 // An archived record of object sub-graphs reachable from static
112 // fields within _k's mirror. The record is reloaded from the archive
113 // at runtime.
114 class ArchivedKlassSubGraphInfoRecord {
115 private:
116 Klass* _k;
117 bool _is_full_module_graph;
118 bool _has_non_early_klasses;
119
120 // contains pairs of field offset and value for each subgraph entry field
121 Array<int>* _entry_field_records;
122
123 // klasses of objects in archived sub-graphs referenced from the entry points
124 // (static fields) in the containing class
125 Array<Klass*>* _subgraph_object_klasses;
126 public:
127 ArchivedKlassSubGraphInfoRecord() :
128 _k(nullptr), _entry_field_records(nullptr), _subgraph_object_klasses(nullptr) {}
129 void init(KlassSubGraphInfo* info);
130 Klass* klass() const { return _k; }
131 Array<int>* entry_field_records() const { return _entry_field_records; }
132 Array<Klass*>* subgraph_object_klasses() const { return _subgraph_object_klasses; }
133 bool is_full_module_graph() const { return _is_full_module_graph; }
134 bool has_non_early_klasses() const { return _has_non_early_klasses; }
135 };
136 #endif // INCLUDE_CDS_JAVA_HEAP
137
138 enum class HeapArchiveMode {
139 _uninitialized,
140 _mapping,
141 _streaming
142 };
143
144 class HeapShared: AllStatic {
145 friend class VerifySharedOopClosure;
146
147 public:
148 static void initialize_loading_mode(HeapArchiveMode mode) NOT_CDS_JAVA_HEAP_RETURN;
149 static void initialize_writing_mode() NOT_CDS_JAVA_HEAP_RETURN;
150
151 inline static bool is_loading() NOT_CDS_JAVA_HEAP_RETURN_(false);
152
153 inline static bool is_loading_streaming_mode() NOT_CDS_JAVA_HEAP_RETURN_(false);
154 inline static bool is_loading_mapping_mode() NOT_CDS_JAVA_HEAP_RETURN_(false);
155
156 inline static bool is_writing() NOT_CDS_JAVA_HEAP_RETURN_(false);
157
158 inline static bool is_writing_streaming_mode() NOT_CDS_JAVA_HEAP_RETURN_(false);
159 inline static bool is_writing_mapping_mode() NOT_CDS_JAVA_HEAP_RETURN_(false);
160
161 static bool is_subgraph_root_class(InstanceKlass* ik);
162
163 // Scratch objects for archiving Klass::java_mirror()
164 static oop scratch_java_mirror(BasicType t) NOT_CDS_JAVA_HEAP_RETURN_(nullptr);
165 static oop scratch_java_mirror(Klass* k) NOT_CDS_JAVA_HEAP_RETURN_(nullptr);
166 static oop scratch_java_mirror(oop java_mirror) NOT_CDS_JAVA_HEAP_RETURN_(nullptr);
167 static bool is_archived_boot_layer_available(JavaThread* current) NOT_CDS_JAVA_HEAP_RETURN_(false);
168
169 static bool is_archived_heap_in_use() NOT_CDS_JAVA_HEAP_RETURN_(false);
170 static bool can_use_archived_heap() NOT_CDS_JAVA_HEAP_RETURN_(false);
171 static bool is_too_large_to_archive(size_t size);
172 static bool is_string_too_large_to_archive(oop string);
173 static bool is_too_large_to_archive(oop obj);
174
175 static void initialize_streaming() NOT_CDS_JAVA_HEAP_RETURN;
176 static void enable_gc() NOT_CDS_JAVA_HEAP_RETURN;
177 static void materialize_thread_object() NOT_CDS_JAVA_HEAP_RETURN;
178 static void archive_interned_string(oop string);
179 static void finalize_initialization(FileMapInfo* static_mapinfo) NOT_CDS_JAVA_HEAP_RETURN;
180
181 private:
182 #if INCLUDE_CDS_JAVA_HEAP
183 static HeapArchiveMode _heap_load_mode;
184 static HeapArchiveMode _heap_write_mode;
185
186 // statistics
187 constexpr static int ALLOC_STAT_SLOTS = 16;
188 static size_t _alloc_count[ALLOC_STAT_SLOTS];
189 static size_t _alloc_size[ALLOC_STAT_SLOTS];
190 static size_t _total_obj_count;
191 static size_t _total_obj_size; // in HeapWords
192
193 static void count_allocation(size_t size);
194 static void print_stats();
195 public:
196 static void debug_trace();
197 static unsigned oop_hash(oop const& p);
198 static bool oop_handle_equals(const OopHandle& a, const OopHandle& b);
199
200 class CopyKlassSubGraphInfoToArchive;
201
202 class CachedOopInfo {
203 // Used by CDSHeapVerifier.
204 OopHandle _orig_referrer;
205
206 // The location of this object inside {AOTMappedHeapWriter, AOTStreamedHeapWriter}::_buffer
207 size_t _buffer_offset;
208
209 // One or more fields in this object are pointing to non-null oops.
210 bool _has_oop_pointers;
211
212 // One or more fields in this object are pointing to MetaspaceObj
213 bool _has_native_pointers;
214
215 // >= 0 if this oop has been append to the list of roots
216 int _root_index;
217 public:
218 CachedOopInfo(OopHandle orig_referrer, bool has_oop_pointers)
219 : _orig_referrer(orig_referrer),
220 _buffer_offset(0),
221 _has_oop_pointers(has_oop_pointers),
222 _has_native_pointers(false),
223 _root_index(-1) {}
224 oop orig_referrer() const;
225 void set_buffer_offset(size_t offset) { _buffer_offset = offset; }
226 size_t buffer_offset() const { return _buffer_offset; }
227 bool has_oop_pointers() const { return _has_oop_pointers; }
228 bool has_native_pointers() const { return _has_native_pointers; }
229 void set_has_native_pointers() { _has_native_pointers = true; }
230 int root_index() const { return _root_index; }
231 void set_root_index(int i) { _root_index = i; }
232 };
233
234 private:
235 static const int INITIAL_TABLE_SIZE = 15889; // prime number
236 static const int MAX_TABLE_SIZE = 1000000;
237 static bool _use_identity_hash_for_archived_object_cache;
238
239 static unsigned archived_object_cache_hash(OopHandle const& oh);
240
241 typedef ResizeableHashTable<OopHandle, CachedOopInfo,
242 AnyObj::C_HEAP,
243 mtClassShared,
244 HeapShared::archived_object_cache_hash,
245 HeapShared::oop_handle_equals> ArchivedObjectCache;
246 static ArchivedObjectCache* _archived_object_cache;
247
248 class DumpTimeKlassSubGraphInfoTable
249 : public HashTable<Klass*, KlassSubGraphInfo,
250 137, // prime number
251 AnyObj::C_HEAP,
252 mtClassShared,
253 DumpTimeSharedClassTable_hash> {};
254
255 public: // solaris compiler wants this for RunTimeKlassSubGraphInfoTable
256 inline static bool record_equals_compact_hashtable_entry(
257 const ArchivedKlassSubGraphInfoRecord* value, const Klass* key, int len_unused) {
258 return (value->klass() == key);
259 }
260
261 private:
262 typedef OffsetCompactHashtable<
263 const Klass*,
264 const ArchivedKlassSubGraphInfoRecord*,
265 record_equals_compact_hashtable_entry
266 > RunTimeKlassSubGraphInfoTable;
267
268 static DumpTimeKlassSubGraphInfoTable* _dump_time_subgraph_info_table;
269 static RunTimeKlassSubGraphInfoTable _run_time_subgraph_info_table;
270
271 static CachedOopInfo make_cached_oop_info(oop obj, oop referrer);
272 static ArchivedKlassSubGraphInfoRecord* archive_subgraph_info(KlassSubGraphInfo* info);
273 static void archive_object_subgraphs(ArchivableStaticFieldInfo fields[],
274 bool is_full_module_graph);
275
276 // Archive object sub-graph starting from the given static field
277 // in Klass k's mirror.
278 static void archive_reachable_objects_from_static_field(
279 InstanceKlass* k, const char* klass_name,
280 int field_offset, const char* field_name);
281
282 static void verify_subgraph_from_static_field(
283 InstanceKlass* k, int field_offset) PRODUCT_RETURN;
284 static void verify_reachable_objects_from(oop obj) PRODUCT_RETURN;
285 static void verify_subgraph_from(oop orig_obj) PRODUCT_RETURN;
286 static void check_special_subgraph_classes();
287
288 static KlassSubGraphInfo* init_subgraph_info(Klass *k, bool is_full_module_graph);
289 static KlassSubGraphInfo* get_subgraph_info(Klass *k);
290
291 static void init_subgraph_entry_fields(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
292 static void init_subgraph_entry_fields(ArchivableStaticFieldInfo fields[], TRAPS);
293
294 // UseCompressedOops only: Used by decode_from_archive
295 static address _narrow_oop_base;
296 static int _narrow_oop_shift;
297
298 // !UseCompressedOops only: used to relocate pointers to the archived objects
299 static ptrdiff_t _runtime_delta;
300
301 typedef ResizeableHashTable<oop, bool,
302 AnyObj::C_HEAP,
303 mtClassShared,
304 HeapShared::oop_hash> SeenObjectsTable;
305
306 static SeenObjectsTable *_seen_objects_table;
307
308 // The "special subgraph" contains all the archived objects that are reachable
309 // from the following roots:
310 // - interned strings
311 // - Klass::java_mirror() -- including aot-initialized mirrors such as those of Enum klasses.
312 // - ConstantPool::resolved_references()
313 // - Universe::<xxx>_exception_instance()
314 static KlassSubGraphInfo* _dump_time_special_subgraph; // for collecting info during dump time
315 static ArchivedKlassSubGraphInfoRecord* _run_time_special_subgraph; // for initializing classes during run time.
316
317 static GrowableArrayCHeap<oop, mtClassShared>* _pending_roots;
318 static OopHandle _scratch_basic_type_mirrors[T_VOID+1];
319 static MetaspaceObjToOopHandleTable* _scratch_objects_table;
320
321 static void init_seen_objects_table() {
322 assert(_seen_objects_table == nullptr, "must be");
323 _seen_objects_table = new (mtClass)SeenObjectsTable(INITIAL_TABLE_SIZE, MAX_TABLE_SIZE);
324 }
325 static void delete_seen_objects_table() {
326 assert(_seen_objects_table != nullptr, "must be");
327 delete _seen_objects_table;
328 _seen_objects_table = nullptr;
329 }
330
331 // Statistics (for one round of start_recording_subgraph ... done_recording_subgraph)
332 static size_t _num_new_walked_objs;
333 static size_t _num_new_archived_objs;
334 static size_t _num_old_recorded_klasses;
335
336 // Statistics (for all archived subgraphs)
337 static size_t _num_total_subgraph_recordings;
338 static size_t _num_total_walked_objs;
339 static size_t _num_total_archived_objs;
340 static size_t _num_total_recorded_klasses;
341 static size_t _num_total_verifications;
342
343 static void start_recording_subgraph(InstanceKlass *k, const char* klass_name,
344 bool is_full_module_graph);
345 static void done_recording_subgraph(InstanceKlass *k, const char* klass_name);
346
347 static bool has_been_seen_during_subgraph_recording(oop obj);
348 static void set_has_been_seen_during_subgraph_recording(oop obj);
349 static bool archive_object(oop obj, oop referrer, KlassSubGraphInfo* subgraph_info);
350
351 static void resolve_classes_for_subgraphs(JavaThread* current, ArchivableStaticFieldInfo fields[]);
352 static void resolve_classes_for_subgraph_of(JavaThread* current, Klass* k);
353 static void clear_archived_roots_of(Klass* k);
354 static const ArchivedKlassSubGraphInfoRecord*
355 resolve_or_init_classes_for_subgraph_of(Klass* k, bool do_init, TRAPS);
356 static void resolve_or_init(const char* klass_name, bool do_init, TRAPS);
357 static void resolve_or_init(Klass* k, bool do_init, TRAPS);
358 static void init_archived_fields_for(Klass* k, const ArchivedKlassSubGraphInfoRecord* record);
359
360 static bool has_been_archived(oop orig_obj);
361 static void prepare_resolved_references();
362 static void archive_subgraphs();
363 static void copy_java_mirror(oop orig_mirror, oop scratch_m);
364
365 // PendingOop and PendingOopStack are used for recursively discovering all cacheable
366 // heap objects. The recursion is done using PendingOopStack so we won't overflow the
367 // C stack with deep reference chains.
368 class PendingOop {
369 oop _obj;
370 oop _referrer;
371 int _level;
372
373 public:
374 PendingOop() : _obj(nullptr), _referrer(nullptr), _level(-1) {}
375 PendingOop(oop obj, oop referrer, int level) : _obj(obj), _referrer(referrer), _level(level) {}
376
377 oop obj() const { return _obj; }
378 oop referrer() const { return _referrer; }
379 int level() const { return _level; }
380 };
381
382 class OopFieldPusher;
383 using PendingOopStack = GrowableArrayCHeap<PendingOop, mtClassShared>;
384
385 static PendingOop _object_being_archived;
386 static bool walk_one_object(PendingOopStack* stack, int level, KlassSubGraphInfo* subgraph_info,
387 oop orig_obj, oop referrer);
388
389 static void reset_archived_object_states(TRAPS);
390 static void ensure_determinism(TRAPS);
391 public:
392 static void prepare_for_archiving(TRAPS);
393 static void create_archived_object_cache() {
394 _archived_object_cache =
395 new (mtClass)ArchivedObjectCache(INITIAL_TABLE_SIZE, MAX_TABLE_SIZE);
396 }
397 static void destroy_archived_object_cache() {
398 delete _archived_object_cache;
399 _archived_object_cache = nullptr;
400 }
401 static void make_archived_object_cache_gc_safe();
402 static ArchivedObjectCache* archived_object_cache() {
403 return _archived_object_cache;
404 }
405
406 static CachedOopInfo* get_cached_oop_info(oop orig_obj);
407
408 static int archive_exception_instance(oop exception);
409
410 static bool archive_reachable_objects_from(int level,
411 KlassSubGraphInfo* subgraph_info,
412 oop orig_obj);
413
414 static bool is_interned_string(oop obj);
415 static bool is_dumped_interned_string(oop o);
416
417 // Scratch objects for archiving Klass::java_mirror()
418 static void set_scratch_java_mirror(Klass* k, oop mirror);
419 static void remove_scratch_objects(Klass* k);
420 static bool is_metadata_field(oop src_obj, int offset);
421 template <typename T> static void do_metadata_offsets(oop src_obj, T callback);
422 static void remap_dumped_metadata(oop src_obj, address archived_object);
423 inline static void remap_loaded_metadata(oop obj);
424 inline static oop maybe_remap_referent(bool is_java_lang_ref, size_t field_offset, oop referent);
425 static void get_pointer_info(oop src_obj, bool& has_oop_pointers, bool& has_native_pointers);
426 static void set_has_native_pointers(oop src_obj);
427 static uintptr_t archive_location(oop src_obj);
428
429 // We use the HeapShared::roots() array to make sure that objects stored in the
430 // archived heap region are not prematurely collected. These roots include:
431 //
432 // - mirrors of classes that have not yet been loaded.
433 // - ConstantPool::resolved_references() of classes that have not yet been loaded.
434 // - ArchivedKlassSubGraphInfoRecords that have not been initialized
435 // - java.lang.Module objects that have not yet been added to the module graph
436 //
437 // When a mirror M becomes referenced by a newly loaded class K, M will be removed
438 // from HeapShared::roots() via clear_root(), and K will be responsible for
439 // keeping M alive.
440 //
441 // Other types of roots are also cleared similarly when they become referenced.
442
443 // Dump-time only. Returns the index of the root, which can be used at run time to read
444 // the root using get_root(index, ...).
445 static int append_root(oop obj);
446
447 // AOT-compile time only.
448 // Returns -1 if obj is not in the heap root set.
449 static int get_root_index(oop obj) NOT_CDS_JAVA_HEAP_RETURN_(-1);
450
451 static GrowableArrayCHeap<oop, mtClassShared>* pending_roots() { return _pending_roots; }
452
453 // Dump-time and runtime
454 static objArrayOop root_segment(int segment_idx);
455 static oop get_root(int index, bool clear=false);
456
457 // Run-time only
458 static void clear_root(int index);
459 static void get_segment_indexes(int index, int& segment_index, int& internal_index);
460 static void setup_test_class(const char* test_class_name) PRODUCT_RETURN;
461 #endif // INCLUDE_CDS_JAVA_HEAP
462
463 public:
464 static void finish_materialize_objects() NOT_CDS_JAVA_HEAP_RETURN;
465
466 static void write_heap(AOTMappedHeapInfo* mapped_heap_info, AOTStreamedHeapInfo* streamed_heap_info) NOT_CDS_JAVA_HEAP_RETURN;
467 static objArrayOop scratch_resolved_references(ConstantPool* src);
468 static void add_scratch_resolved_references(ConstantPool* src, objArrayOop dest) NOT_CDS_JAVA_HEAP_RETURN;
469 static void init_dumping() NOT_CDS_JAVA_HEAP_RETURN;
470 static void init_scratch_objects_for_basic_type_mirrors(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
471 static void init_box_classes(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
472 static bool is_heap_region(int idx) {
473 CDS_JAVA_HEAP_ONLY(return (idx == AOTMetaspace::hp);)
474 NOT_CDS_JAVA_HEAP_RETURN_(false);
475 }
476 static void delete_tables_with_raw_oops() NOT_CDS_JAVA_HEAP_RETURN;
477
478 static void resolve_classes(JavaThread* current) NOT_CDS_JAVA_HEAP_RETURN;
479 static void initialize_from_archived_subgraph(JavaThread* current, Klass* k) NOT_CDS_JAVA_HEAP_RETURN;
480
481 static void init_for_dumping(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
482 static void init_heap_writer() NOT_CDS_JAVA_HEAP_RETURN;
483 static void write_subgraph_info_table() NOT_CDS_JAVA_HEAP_RETURN;
484 static void serialize_tables(SerializeClosure* soc) NOT_CDS_JAVA_HEAP_RETURN;
485
486 #ifndef PRODUCT
487 static bool is_a_test_class_in_unnamed_module(Klass* ik) NOT_CDS_JAVA_HEAP_RETURN_(false);
488 static void initialize_test_class_from_archive(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
489 #endif
490
491 static void initialize_java_lang_invoke(TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
492 static void init_classes_for_special_subgraph(Handle loader, TRAPS) NOT_CDS_JAVA_HEAP_RETURN;
493
494 static bool is_lambda_form_klass(InstanceKlass* ik) NOT_CDS_JAVA_HEAP_RETURN_(false);
495 static bool is_lambda_proxy_klass(InstanceKlass* ik) NOT_CDS_JAVA_HEAP_RETURN_(false);
496 static bool is_string_concat_klass(InstanceKlass* ik) NOT_CDS_JAVA_HEAP_RETURN_(false);
497 static bool is_archivable_hidden_klass(InstanceKlass* ik) NOT_CDS_JAVA_HEAP_RETURN_(false);
498
499 // Used by AOTArtifactFinder
500 static void start_scanning_for_oops();
501 static void end_scanning_for_oops();
502 static void scan_java_class(Klass* k);
503 static void scan_java_mirror(oop orig_mirror);
504 static void copy_and_rescan_aot_inited_mirror(InstanceKlass* ik);
505
506 static void log_heap_roots();
507
508 static intptr_t log_target_location(oop source_oop);
509 static void log_oop_info(outputStream* st, oop source_oop, address archived_object_start, address archived_object_end);
510 static void log_oop_info(outputStream* st, oop source_oop);
511 static void log_oop_details(oop source_oop, address buffered_addr);
512 };
513
514 #endif // SHARE_CDS_HEAPSHARED_HPP