341 protected:
342 template <class T> void do_oop_work(T *p) {
343 oop obj = RawAccess<>::oop_load(p);
344 if (!CompressedOops::is_null(obj)) {
345 // A java.lang.Class instance can not be included in an archived
346 // object sub-graph.
347 if (java_lang_Class::is_instance(obj)) {
348 tty->print("Unknown java.lang.Class object is in the archived sub-graph\n");
349 vm_exit(1);
350 }
351
352 LogTarget(Debug, cds, heap) log;
353 LogStream ls(log);
354 outputStream* out = &ls;
355 {
356 ResourceMark rm;
357 log.print("(%d) %s <--- referenced from: %s",
358 _level, obj->klass()->external_name(),
359 CompressedOops::is_null(_orig_referencing_obj) ?
360 "" : _orig_referencing_obj->klass()->external_name());
361 obj->print_on(out);
362 }
363
364 if (MetaspaceShared::is_archive_object(obj)) {
365 // The current oop is an archived oop, nothing needs to be done
366 log.print("--- object is already archived ---");
367 return;
368 }
369
370 size_t field_delta = pointer_delta(
371 p, _orig_referencing_obj, sizeof(char));
372 T* new_p = (T*)(address(_archived_referencing_obj) + field_delta);
373 oop archived = MetaspaceShared::find_archived_heap_object(obj);
374 if (archived != NULL) {
375 // There is an archived copy existing, update reference to point
376 // to the archived copy
377 RawAccess<IS_NOT_NULL>::oop_store(new_p, archived);
378 log.print(
379 "--- found existing archived copy, store archived " PTR_FORMAT " in " PTR_FORMAT,
380 p2i(archived), p2i(new_p));
381 return;
452 assert(InstanceKlass::cast(k)->is_shared_boot_class(),
453 "must be boot class");
454
455 oop m = k->java_mirror();
456 oop archived_m = MetaspaceShared::find_archived_heap_object(m);
457 if (CompressedOops::is_null(archived_m)) {
458 return;
459 }
460
461 if (field_type == T_OBJECT) {
462 // obtain k's subGraph Info
463 KlassSubGraphInfo* subgraph_info = get_subgraph_info(k);
464
465 // get the object referenced by the field
466 oop f = m->obj_field(field_offset);
467 if (!CompressedOops::is_null(f)) {
468 LogTarget(Debug, cds, heap) log;
469 LogStream ls(log);
470 outputStream* out = &ls;
471 log.print("Start from: ");
472 f->print_on(out);
473
474 // get the archived copy of the field referenced object
475 oop af = MetaspaceShared::archive_heap_object(f, THREAD);
476 if (!MetaspaceShared::is_archive_object(f)) {
477 WalkOopAndArchiveClosure walker(1, subgraph_info, f, af);
478 f->oop_iterate(&walker);
479 }
480
481 // The field value is not preserved in the archived mirror.
482 // Record the field as a new subGraph entry point. The recorded
483 // information is restored from the archive at runtime.
484 subgraph_info->add_subgraph_entry_field(field_offset, af);
485 Klass *relocated_k = af->klass();
486 Klass *orig_k = f->klass();
487 subgraph_info->add_subgraph_object_klass(orig_k, relocated_k);
488 } else {
489 // The field contains null, we still need to record the entry point,
490 // so it can be restored at runtime.
491 subgraph_info->add_subgraph_entry_field(field_offset, NULL);
492 }
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341 protected:
342 template <class T> void do_oop_work(T *p) {
343 oop obj = RawAccess<>::oop_load(p);
344 if (!CompressedOops::is_null(obj)) {
345 // A java.lang.Class instance can not be included in an archived
346 // object sub-graph.
347 if (java_lang_Class::is_instance(obj)) {
348 tty->print("Unknown java.lang.Class object is in the archived sub-graph\n");
349 vm_exit(1);
350 }
351
352 LogTarget(Debug, cds, heap) log;
353 LogStream ls(log);
354 outputStream* out = &ls;
355 {
356 ResourceMark rm;
357 log.print("(%d) %s <--- referenced from: %s",
358 _level, obj->klass()->external_name(),
359 CompressedOops::is_null(_orig_referencing_obj) ?
360 "" : _orig_referencing_obj->klass()->external_name());
361 oopDesc::print_on(out, obj);
362 }
363
364 if (MetaspaceShared::is_archive_object(obj)) {
365 // The current oop is an archived oop, nothing needs to be done
366 log.print("--- object is already archived ---");
367 return;
368 }
369
370 size_t field_delta = pointer_delta(
371 p, _orig_referencing_obj, sizeof(char));
372 T* new_p = (T*)(address(_archived_referencing_obj) + field_delta);
373 oop archived = MetaspaceShared::find_archived_heap_object(obj);
374 if (archived != NULL) {
375 // There is an archived copy existing, update reference to point
376 // to the archived copy
377 RawAccess<IS_NOT_NULL>::oop_store(new_p, archived);
378 log.print(
379 "--- found existing archived copy, store archived " PTR_FORMAT " in " PTR_FORMAT,
380 p2i(archived), p2i(new_p));
381 return;
452 assert(InstanceKlass::cast(k)->is_shared_boot_class(),
453 "must be boot class");
454
455 oop m = k->java_mirror();
456 oop archived_m = MetaspaceShared::find_archived_heap_object(m);
457 if (CompressedOops::is_null(archived_m)) {
458 return;
459 }
460
461 if (field_type == T_OBJECT) {
462 // obtain k's subGraph Info
463 KlassSubGraphInfo* subgraph_info = get_subgraph_info(k);
464
465 // get the object referenced by the field
466 oop f = m->obj_field(field_offset);
467 if (!CompressedOops::is_null(f)) {
468 LogTarget(Debug, cds, heap) log;
469 LogStream ls(log);
470 outputStream* out = &ls;
471 log.print("Start from: ");
472 oopDesc::print_on(out, f);
473
474 // get the archived copy of the field referenced object
475 oop af = MetaspaceShared::archive_heap_object(f, THREAD);
476 if (!MetaspaceShared::is_archive_object(f)) {
477 WalkOopAndArchiveClosure walker(1, subgraph_info, f, af);
478 f->oop_iterate(&walker);
479 }
480
481 // The field value is not preserved in the archived mirror.
482 // Record the field as a new subGraph entry point. The recorded
483 // information is restored from the archive at runtime.
484 subgraph_info->add_subgraph_entry_field(field_offset, af);
485 Klass *relocated_k = af->klass();
486 Klass *orig_k = f->klass();
487 subgraph_info->add_subgraph_object_klass(orig_k, relocated_k);
488 } else {
489 // The field contains null, we still need to record the entry point,
490 // so it can be restored at runtime.
491 subgraph_info->add_subgraph_entry_field(field_offset, NULL);
492 }
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