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comparison src/share/vm/gc_implementation/parallelScavenge/psMarkSweep.cpp @ 2177:3582bf76420e

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6990754: Use native memory and reference counting to implement SymbolTable Summary: move symbols from permgen into C heap and reference count them Reviewed-by: never, acorn, jmasa, stefank
author coleenp
date Thu, 27 Jan 2011 16:11:27 -0800
parents 9afee0b9fc1d
children 92da084fefc9
comparison
equal deleted inserted replaced
2176:27e4ea99855d 2177:3582bf76420e
525 ObjectSynchronizer::oops_do(mark_and_push_closure()); 525 ObjectSynchronizer::oops_do(mark_and_push_closure());
526 FlatProfiler::oops_do(mark_and_push_closure()); 526 FlatProfiler::oops_do(mark_and_push_closure());
527 Management::oops_do(mark_and_push_closure()); 527 Management::oops_do(mark_and_push_closure());
528 JvmtiExport::oops_do(mark_and_push_closure()); 528 JvmtiExport::oops_do(mark_and_push_closure());
529 SystemDictionary::always_strong_oops_do(mark_and_push_closure()); 529 SystemDictionary::always_strong_oops_do(mark_and_push_closure());
530 vmSymbols::oops_do(mark_and_push_closure());
531 // Do not treat nmethods as strong roots for mark/sweep, since we can unload them. 530 // Do not treat nmethods as strong roots for mark/sweep, since we can unload them.
532 //CodeCache::scavenge_root_nmethods_do(CodeBlobToOopClosure(mark_and_push_closure())); 531 //CodeCache::scavenge_root_nmethods_do(CodeBlobToOopClosure(mark_and_push_closure()));
533 } 532 }
534 533
535 // Flush marking stack. 534 // Flush marking stack.
556 555
557 // Visit memoized mdo's and clear unmarked weak refs 556 // Visit memoized mdo's and clear unmarked weak refs
558 follow_mdo_weak_refs(); 557 follow_mdo_weak_refs();
559 assert(_marking_stack.is_empty(), "just drained"); 558 assert(_marking_stack.is_empty(), "just drained");
560 559
561 // Visit symbol and interned string tables and delete unmarked oops 560 // Visit interned string tables and delete unmarked oops
562 SymbolTable::unlink(is_alive_closure());
563 StringTable::unlink(is_alive_closure()); 561 StringTable::unlink(is_alive_closure());
562 // Clean up unreferenced symbols in symbol table.
563 SymbolTable::unlink();
564 564
565 assert(_marking_stack.is_empty(), "stack should be empty by now"); 565 assert(_marking_stack.is_empty(), "stack should be empty by now");
566 } 566 }
567 567
568 568
632 FlatProfiler::oops_do(adjust_root_pointer_closure()); 632 FlatProfiler::oops_do(adjust_root_pointer_closure());
633 Management::oops_do(adjust_root_pointer_closure()); 633 Management::oops_do(adjust_root_pointer_closure());
634 JvmtiExport::oops_do(adjust_root_pointer_closure()); 634 JvmtiExport::oops_do(adjust_root_pointer_closure());
635 // SO_AllClasses 635 // SO_AllClasses
636 SystemDictionary::oops_do(adjust_root_pointer_closure()); 636 SystemDictionary::oops_do(adjust_root_pointer_closure());
637 vmSymbols::oops_do(adjust_root_pointer_closure());
638 //CodeCache::scavenge_root_nmethods_oops_do(adjust_root_pointer_closure()); 637 //CodeCache::scavenge_root_nmethods_oops_do(adjust_root_pointer_closure());
639 638
640 // Now adjust pointers in remaining weak roots. (All of which should 639 // Now adjust pointers in remaining weak roots. (All of which should
641 // have been cleared if they pointed to non-surviving objects.) 640 // have been cleared if they pointed to non-surviving objects.)
642 // Global (weak) JNI handles 641 // Global (weak) JNI handles
643 JNIHandles::weak_oops_do(&always_true, adjust_root_pointer_closure()); 642 JNIHandles::weak_oops_do(&always_true, adjust_root_pointer_closure());
644 643
645 CodeCache::oops_do(adjust_pointer_closure()); 644 CodeCache::oops_do(adjust_pointer_closure());
646 SymbolTable::oops_do(adjust_root_pointer_closure());
647 StringTable::oops_do(adjust_root_pointer_closure()); 645 StringTable::oops_do(adjust_root_pointer_closure());
648 ref_processor()->weak_oops_do(adjust_root_pointer_closure()); 646 ref_processor()->weak_oops_do(adjust_root_pointer_closure());
649 PSScavenge::reference_processor()->weak_oops_do(adjust_root_pointer_closure()); 647 PSScavenge::reference_processor()->weak_oops_do(adjust_root_pointer_closure());
650 648
651 adjust_marks(); 649 adjust_marks();