375 }
376
377 size_t field_delta = pointer_delta(
378 p, _orig_referencing_obj, sizeof(char));
379 T* new_p = (T*)(address(_archived_referencing_obj) + field_delta);
380 oop archived = MetaspaceShared::find_archived_heap_object(obj);
381 if (archived != NULL) {
382 // There is an archived copy existing, update reference to point
383 // to the archived copy
384 RawAccess<IS_NOT_NULL>::oop_store(new_p, archived);
385 log.print(
386 "--- found existing archived copy, store archived " PTR_FORMAT " in " PTR_FORMAT,
387 p2i(archived), p2i(new_p));
388 return;
389 }
390
391 int l = _level + 1;
392 Thread* THREAD = Thread::current();
393 // Archive the current oop before iterating through its references
394 archived = MetaspaceShared::archive_heap_object(obj, THREAD);
395 assert(MetaspaceShared::is_archive_object(archived), "must be archived");
396 log.print("=== archiving oop " PTR_FORMAT " ==> " PTR_FORMAT,
397 p2i(obj), p2i(archived));
398
399 // Following the references in the current oop and archive any
400 // encountered objects during the process
401 WalkOopAndArchiveClosure walker(l, _subgraph_info, obj, archived);
402 obj->oop_iterate(&walker);
403
404 // Update the reference in the archived copy of the referencing object
405 RawAccess<IS_NOT_NULL>::oop_store(new_p, archived);
406 log.print("=== store archived " PTR_FORMAT " in " PTR_FORMAT,
407 p2i(archived), p2i(new_p));
408
409 // Add the klass to the list of classes that need to be loaded before
410 // module system initialization
411 Klass *orig_k = obj->klass();
412 Klass *relocated_k = archived->klass();
413 _subgraph_info->add_subgraph_object_klass(orig_k, relocated_k);
414 }
463 oop archived_m = MetaspaceShared::find_archived_heap_object(m);
464 if (CompressedOops::is_null(archived_m)) {
465 return;
466 }
467
468 if (field_type == T_OBJECT) {
469 // obtain k's subGraph Info
470 KlassSubGraphInfo* subgraph_info = get_subgraph_info(k);
471
472 // get the object referenced by the field
473 oop f = m->obj_field(field_offset);
474 if (!CompressedOops::is_null(f)) {
475 LogTarget(Debug, cds, heap) log;
476 LogStream ls(log);
477 outputStream* out = &ls;
478 log.print("Start from: ");
479 f->print_on(out);
480
481 // get the archived copy of the field referenced object
482 oop af = MetaspaceShared::archive_heap_object(f, THREAD);
483 if (!MetaspaceShared::is_archive_object(f)) {
484 WalkOopAndArchiveClosure walker(1, subgraph_info, f, af);
485 f->oop_iterate(&walker);
486 }
487
488 // The field value is not preserved in the archived mirror.
489 // Record the field as a new subGraph entry point. The recorded
490 // information is restored from the archive at runtime.
491 subgraph_info->add_subgraph_entry_field(field_offset, af);
492 Klass *relocated_k = af->klass();
493 Klass *orig_k = f->klass();
494 subgraph_info->add_subgraph_object_klass(orig_k, relocated_k);
495 } else {
496 // The field contains null, we still need to record the entry point,
497 // so it can be restored at runtime.
498 subgraph_info->add_subgraph_entry_field(field_offset, NULL);
499 }
500 } else {
501 ShouldNotReachHere();
502 }
503 }
504
505 #define do_module_object_graph(archive_object_graph_do) \
506 archive_object_graph_do(SystemDictionary::ArchivedModuleGraph_klass(), jdk_internal_module_ArchivedModuleGraph::archivedSystemModules_offset(), T_OBJECT, CHECK); \
507 archive_object_graph_do(SystemDictionary::ArchivedModuleGraph_klass(), jdk_internal_module_ArchivedModuleGraph::archivedModuleFinder_offset(), T_OBJECT, CHECK); \
508 archive_object_graph_do(SystemDictionary::ArchivedModuleGraph_klass(), jdk_internal_module_ArchivedModuleGraph::archivedMainModule_offset(), T_OBJECT, CHECK); \
509 archive_object_graph_do(SystemDictionary::ArchivedModuleGraph_klass(), jdk_internal_module_ArchivedModuleGraph::archivedConfiguration_offset(), T_OBJECT, CHECK); \
510 archive_object_graph_do(SystemDictionary::ImmutableCollections_ListN_klass(), java_util_ImmutableCollections_ListN::EMPTY_LIST_offset(), T_OBJECT, CHECK); \
511 archive_object_graph_do(SystemDictionary::ImmutableCollections_MapN_klass(), java_util_ImmutableCollections_MapN::EMPTY_MAP_offset(), T_OBJECT, CHECK); \
512 archive_object_graph_do(SystemDictionary::ImmutableCollections_SetN_klass(), java_util_ImmutableCollections_SetN::EMPTY_SET_offset(), T_OBJECT, CHECK); \
513 archive_object_graph_do(SystemDictionary::Integer_IntegerCache_klass(), java_lang_Integer_IntegerCache::archivedCache_offset(), T_OBJECT, CHECK); \
514 archive_object_graph_do(SystemDictionary::Configuration_klass(), java_lang_module_Configuration::EMPTY_CONFIGURATION_offset(), T_OBJECT, CHECK)
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375 }
376
377 size_t field_delta = pointer_delta(
378 p, _orig_referencing_obj, sizeof(char));
379 T* new_p = (T*)(address(_archived_referencing_obj) + field_delta);
380 oop archived = MetaspaceShared::find_archived_heap_object(obj);
381 if (archived != NULL) {
382 // There is an archived copy existing, update reference to point
383 // to the archived copy
384 RawAccess<IS_NOT_NULL>::oop_store(new_p, archived);
385 log.print(
386 "--- found existing archived copy, store archived " PTR_FORMAT " in " PTR_FORMAT,
387 p2i(archived), p2i(new_p));
388 return;
389 }
390
391 int l = _level + 1;
392 Thread* THREAD = Thread::current();
393 // Archive the current oop before iterating through its references
394 archived = MetaspaceShared::archive_heap_object(obj, THREAD);
395 if (archived == NULL) {
396 ResourceMark rm;
397 tty->print("Failed to archive %s object ("
398 PTR_FORMAT "), size[" SIZE_FORMAT "] in sub-graph",
399 obj->klass()->external_name(), p2i(obj), (size_t)obj->size());
400 obj->print_on(tty);
401 vm_exit(1);
402 }
403 assert(MetaspaceShared::is_archive_object(archived), "must be archived");
404 log.print("=== archiving oop " PTR_FORMAT " ==> " PTR_FORMAT,
405 p2i(obj), p2i(archived));
406
407 // Following the references in the current oop and archive any
408 // encountered objects during the process
409 WalkOopAndArchiveClosure walker(l, _subgraph_info, obj, archived);
410 obj->oop_iterate(&walker);
411
412 // Update the reference in the archived copy of the referencing object
413 RawAccess<IS_NOT_NULL>::oop_store(new_p, archived);
414 log.print("=== store archived " PTR_FORMAT " in " PTR_FORMAT,
415 p2i(archived), p2i(new_p));
416
417 // Add the klass to the list of classes that need to be loaded before
418 // module system initialization
419 Klass *orig_k = obj->klass();
420 Klass *relocated_k = archived->klass();
421 _subgraph_info->add_subgraph_object_klass(orig_k, relocated_k);
422 }
471 oop archived_m = MetaspaceShared::find_archived_heap_object(m);
472 if (CompressedOops::is_null(archived_m)) {
473 return;
474 }
475
476 if (field_type == T_OBJECT) {
477 // obtain k's subGraph Info
478 KlassSubGraphInfo* subgraph_info = get_subgraph_info(k);
479
480 // get the object referenced by the field
481 oop f = m->obj_field(field_offset);
482 if (!CompressedOops::is_null(f)) {
483 LogTarget(Debug, cds, heap) log;
484 LogStream ls(log);
485 outputStream* out = &ls;
486 log.print("Start from: ");
487 f->print_on(out);
488
489 // get the archived copy of the field referenced object
490 oop af = MetaspaceShared::archive_heap_object(f, THREAD);
491 if (af == NULL) {
492 // Skip archiving the sub-graph referenced from the current entry field.
493 ResourceMark rm;
494 log_info(cds, heap)(
495 "Cannot archive the sub-graph referenced from %s object ("
496 PTR_FORMAT ") size[" SIZE_FORMAT "], skipped.",
497 f->klass()->external_name(), p2i(f), (size_t)f->size());
498 return;
499 }
500 if (!MetaspaceShared::is_archive_object(f)) {
501 WalkOopAndArchiveClosure walker(1, subgraph_info, f, af);
502 f->oop_iterate(&walker);
503 }
504
505 // The field value is not preserved in the archived mirror.
506 // Record the field as a new subGraph entry point. The recorded
507 // information is restored from the archive at runtime.
508 subgraph_info->add_subgraph_entry_field(field_offset, af);
509 Klass *relocated_k = af->klass();
510 Klass *orig_k = f->klass();
511 subgraph_info->add_subgraph_object_klass(orig_k, relocated_k);
512 ResourceMark rm;
513 log_info(cds, heap)(
514 "Archived the sub-graph referenced from %s object " PTR_FORMAT,
515 f->klass()->external_name(), p2i(f));
516 } else {
517 // The field contains null, we still need to record the entry point,
518 // so it can be restored at runtime.
519 subgraph_info->add_subgraph_entry_field(field_offset, NULL);
520 }
521 } else {
522 ShouldNotReachHere();
523 }
524 }
525
526 #define do_module_object_graph(archive_object_graph_do) \
527 archive_object_graph_do(SystemDictionary::ArchivedModuleGraph_klass(), jdk_internal_module_ArchivedModuleGraph::archivedSystemModules_offset(), T_OBJECT, CHECK); \
528 archive_object_graph_do(SystemDictionary::ArchivedModuleGraph_klass(), jdk_internal_module_ArchivedModuleGraph::archivedModuleFinder_offset(), T_OBJECT, CHECK); \
529 archive_object_graph_do(SystemDictionary::ArchivedModuleGraph_klass(), jdk_internal_module_ArchivedModuleGraph::archivedMainModule_offset(), T_OBJECT, CHECK); \
530 archive_object_graph_do(SystemDictionary::ArchivedModuleGraph_klass(), jdk_internal_module_ArchivedModuleGraph::archivedConfiguration_offset(), T_OBJECT, CHECK); \
531 archive_object_graph_do(SystemDictionary::ImmutableCollections_ListN_klass(), java_util_ImmutableCollections_ListN::EMPTY_LIST_offset(), T_OBJECT, CHECK); \
532 archive_object_graph_do(SystemDictionary::ImmutableCollections_MapN_klass(), java_util_ImmutableCollections_MapN::EMPTY_MAP_offset(), T_OBJECT, CHECK); \
533 archive_object_graph_do(SystemDictionary::ImmutableCollections_SetN_klass(), java_util_ImmutableCollections_SetN::EMPTY_SET_offset(), T_OBJECT, CHECK); \
534 archive_object_graph_do(SystemDictionary::Integer_IntegerCache_klass(), java_lang_Integer_IntegerCache::archivedCache_offset(), T_OBJECT, CHECK); \
535 archive_object_graph_do(SystemDictionary::Configuration_klass(), java_lang_module_Configuration::EMPTY_CONFIGURATION_offset(), T_OBJECT, CHECK)
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