667
668 const char* cname =
669 PerfDataManager::counter_name(_gen_counters->name_space(), "threads");
670 PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_None,
671 ParallelGCThreads, CHECK);
672 }
673 }
674
675 // ParNewGeneration::
676 ParKeepAliveClosure::ParKeepAliveClosure(ParScanWeakRefClosure* cl) :
677 DefNewGeneration::KeepAliveClosure(cl), _par_cl(cl) {}
678
679 template <class T>
680 void /*ParNewGeneration::*/ParKeepAliveClosure::do_oop_work(T* p) {
681 #ifdef ASSERT
682 {
683 assert(!oopDesc::is_null(*p), "expected non-null ref");
684 oop obj = oopDesc::load_decode_heap_oop_not_null(p);
685 // We never expect to see a null reference being processed
686 // as a weak reference.
687 assert(obj->is_oop(), "expected an oop while scanning weak refs");
688 }
689 #endif // ASSERT
690
691 _par_cl->do_oop_nv(p);
692
693 if (GenCollectedHeap::heap()->is_in_reserved(p)) {
694 oop obj = oopDesc::load_decode_heap_oop_not_null(p);
695 _rs->write_ref_field_gc_par(p, obj);
696 }
697 }
698
699 void /*ParNewGeneration::*/ParKeepAliveClosure::do_oop(oop* p) { ParKeepAliveClosure::do_oop_work(p); }
700 void /*ParNewGeneration::*/ParKeepAliveClosure::do_oop(narrowOop* p) { ParKeepAliveClosure::do_oop_work(p); }
701
702 // ParNewGeneration::
703 KeepAliveClosure::KeepAliveClosure(ScanWeakRefClosure* cl) :
704 DefNewGeneration::KeepAliveClosure(cl) {}
705
706 template <class T>
707 void /*ParNewGeneration::*/KeepAliveClosure::do_oop_work(T* p) {
708 #ifdef ASSERT
709 {
710 assert(!oopDesc::is_null(*p), "expected non-null ref");
711 oop obj = oopDesc::load_decode_heap_oop_not_null(p);
712 // We never expect to see a null reference being processed
713 // as a weak reference.
714 assert(obj->is_oop(), "expected an oop while scanning weak refs");
715 }
716 #endif // ASSERT
717
718 _cl->do_oop_nv(p);
719
720 if (GenCollectedHeap::heap()->is_in_reserved(p)) {
721 oop obj = oopDesc::load_decode_heap_oop_not_null(p);
722 _rs->write_ref_field_gc_par(p, obj);
723 }
724 }
725
726 void /*ParNewGeneration::*/KeepAliveClosure::do_oop(oop* p) { KeepAliveClosure::do_oop_work(p); }
727 void /*ParNewGeneration::*/KeepAliveClosure::do_oop(narrowOop* p) { KeepAliveClosure::do_oop_work(p); }
728
729 template <class T> void ScanClosureWithParBarrier::do_oop_work(T* p) {
730 T heap_oop = oopDesc::load_heap_oop(p);
731 if (!oopDesc::is_null(heap_oop)) {
732 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
733 if ((HeapWord*)obj < _boundary) {
734 assert(!_g->to()->is_in_reserved(obj), "Scanning field twice?");
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667
668 const char* cname =
669 PerfDataManager::counter_name(_gen_counters->name_space(), "threads");
670 PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_None,
671 ParallelGCThreads, CHECK);
672 }
673 }
674
675 // ParNewGeneration::
676 ParKeepAliveClosure::ParKeepAliveClosure(ParScanWeakRefClosure* cl) :
677 DefNewGeneration::KeepAliveClosure(cl), _par_cl(cl) {}
678
679 template <class T>
680 void /*ParNewGeneration::*/ParKeepAliveClosure::do_oop_work(T* p) {
681 #ifdef ASSERT
682 {
683 assert(!oopDesc::is_null(*p), "expected non-null ref");
684 oop obj = oopDesc::load_decode_heap_oop_not_null(p);
685 // We never expect to see a null reference being processed
686 // as a weak reference.
687 assert(oopDesc::is_oop(obj), "expected an oop while scanning weak refs");
688 }
689 #endif // ASSERT
690
691 _par_cl->do_oop_nv(p);
692
693 if (GenCollectedHeap::heap()->is_in_reserved(p)) {
694 oop obj = oopDesc::load_decode_heap_oop_not_null(p);
695 _rs->write_ref_field_gc_par(p, obj);
696 }
697 }
698
699 void /*ParNewGeneration::*/ParKeepAliveClosure::do_oop(oop* p) { ParKeepAliveClosure::do_oop_work(p); }
700 void /*ParNewGeneration::*/ParKeepAliveClosure::do_oop(narrowOop* p) { ParKeepAliveClosure::do_oop_work(p); }
701
702 // ParNewGeneration::
703 KeepAliveClosure::KeepAliveClosure(ScanWeakRefClosure* cl) :
704 DefNewGeneration::KeepAliveClosure(cl) {}
705
706 template <class T>
707 void /*ParNewGeneration::*/KeepAliveClosure::do_oop_work(T* p) {
708 #ifdef ASSERT
709 {
710 assert(!oopDesc::is_null(*p), "expected non-null ref");
711 oop obj = oopDesc::load_decode_heap_oop_not_null(p);
712 // We never expect to see a null reference being processed
713 // as a weak reference.
714 assert(oopDesc::is_oop(obj), "expected an oop while scanning weak refs");
715 }
716 #endif // ASSERT
717
718 _cl->do_oop_nv(p);
719
720 if (GenCollectedHeap::heap()->is_in_reserved(p)) {
721 oop obj = oopDesc::load_decode_heap_oop_not_null(p);
722 _rs->write_ref_field_gc_par(p, obj);
723 }
724 }
725
726 void /*ParNewGeneration::*/KeepAliveClosure::do_oop(oop* p) { KeepAliveClosure::do_oop_work(p); }
727 void /*ParNewGeneration::*/KeepAliveClosure::do_oop(narrowOop* p) { KeepAliveClosure::do_oop_work(p); }
728
729 template <class T> void ScanClosureWithParBarrier::do_oop_work(T* p) {
730 T heap_oop = oopDesc::load_heap_oop(p);
731 if (!oopDesc::is_null(heap_oop)) {
732 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
733 if ((HeapWord*)obj < _boundary) {
734 assert(!_g->to()->is_in_reserved(obj), "Scanning field twice?");
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