51 T heap_oop = oopDesc::load_heap_oop(p); 52 assert(!oopDesc::is_null(heap_oop), "expected non-null oop"); 53 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); 54 // If p points to a younger generation, mark the card. 55 if ((HeapWord*)obj < _gen_boundary) { 56 _rs->inline_write_ref_field_gc(p, obj); 57 } 58 } 59 60 template <class T> inline void OopsInGenClosure::par_do_barrier(T* p) { 61 assert(generation()->is_in_reserved(p), "expected ref in generation"); 62 T heap_oop = oopDesc::load_heap_oop(p); 63 assert(!oopDesc::is_null(heap_oop), "expected non-null oop"); 64 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); 65 // If p points to a younger generation, mark the card. 66 if ((HeapWord*)obj < gen_boundary()) { 67 rs()->write_ref_field_gc_par(p, obj); 68 } 69 } 70 71 inline void OopsInKlassOrGenClosure::do_klass_barrier() { 72 assert(_scanned_klass != NULL, "Must be"); 73 _scanned_klass->record_modified_oops(); 74 } 75 76 // NOTE! Any changes made here should also be made 77 // in FastScanClosure::do_oop_work() 78 template <class T> inline void ScanClosure::do_oop_work(T* p) { 79 T heap_oop = oopDesc::load_heap_oop(p); 80 // Should we copy the obj? 81 if (!oopDesc::is_null(heap_oop)) { 82 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); 83 if ((HeapWord*)obj < _boundary) { 84 assert(!_g->to()->is_in_reserved(obj), "Scanning field twice?"); 85 oop new_obj = obj->is_forwarded() ? obj->forwardee() 86 : _g->copy_to_survivor_space(obj); 87 oopDesc::encode_store_heap_oop_not_null(p, new_obj); 88 } 89 90 if (is_scanning_a_klass()) { 91 do_klass_barrier(); 92 } else if (_gc_barrier) { 93 // Now call parent closure 94 do_barrier(p); 95 } 96 } 97 } 98 99 inline void ScanClosure::do_oop_nv(oop* p) { ScanClosure::do_oop_work(p); } 100 inline void ScanClosure::do_oop_nv(narrowOop* p) { ScanClosure::do_oop_work(p); } 101 102 // NOTE! Any changes made here should also be made 103 // in ScanClosure::do_oop_work() 104 template <class T> inline void FastScanClosure::do_oop_work(T* p) { 105 T heap_oop = oopDesc::load_heap_oop(p); 106 // Should we copy the obj? 107 if (!oopDesc::is_null(heap_oop)) { 108 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); 109 if ((HeapWord*)obj < _boundary) { 110 assert(!_g->to()->is_in_reserved(obj), "Scanning field twice?"); 111 oop new_obj = obj->is_forwarded() ? obj->forwardee() 112 : _g->copy_to_survivor_space(obj); 113 oopDesc::encode_store_heap_oop_not_null(p, new_obj); 114 if (is_scanning_a_klass()) { 115 do_klass_barrier(); 116 } else if (_gc_barrier) { 117 // Now call parent closure 118 do_barrier(p); 119 } 120 } 121 } 122 } 123 124 inline void FastScanClosure::do_oop_nv(oop* p) { FastScanClosure::do_oop_work(p); } 125 inline void FastScanClosure::do_oop_nv(narrowOop* p) { FastScanClosure::do_oop_work(p); } 126 127 template <class T> void FilteringClosure::do_oop_work(T* p) { 128 T heap_oop = oopDesc::load_heap_oop(p); 129 if (!oopDesc::is_null(heap_oop)) { 130 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); 131 if ((HeapWord*)obj < _boundary) { 132 _cl->do_oop(p); 133 } 134 } 135 } 136 | 51 T heap_oop = oopDesc::load_heap_oop(p); 52 assert(!oopDesc::is_null(heap_oop), "expected non-null oop"); 53 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); 54 // If p points to a younger generation, mark the card. 55 if ((HeapWord*)obj < _gen_boundary) { 56 _rs->inline_write_ref_field_gc(p, obj); 57 } 58 } 59 60 template <class T> inline void OopsInGenClosure::par_do_barrier(T* p) { 61 assert(generation()->is_in_reserved(p), "expected ref in generation"); 62 T heap_oop = oopDesc::load_heap_oop(p); 63 assert(!oopDesc::is_null(heap_oop), "expected non-null oop"); 64 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); 65 // If p points to a younger generation, mark the card. 66 if ((HeapWord*)obj < gen_boundary()) { 67 rs()->write_ref_field_gc_par(p, obj); 68 } 69 } 70 71 // NOTE! Any changes made here should also be made 72 // in FastScanClosure::do_oop_work() 73 template <class T> inline void ScanClosure::do_oop_work(T* p) { 74 T heap_oop = oopDesc::load_heap_oop(p); 75 // Should we copy the obj? 76 if (!oopDesc::is_null(heap_oop)) { 77 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); 78 if ((HeapWord*)obj < _boundary) { 79 assert(!_g->to()->is_in_reserved(obj), "Scanning field twice?"); 80 oop new_obj = obj->is_forwarded() ? obj->forwardee() 81 : _g->copy_to_survivor_space(obj); 82 oopDesc::encode_store_heap_oop_not_null(p, new_obj); 83 } 84 85 if (_gc_barrier) { 86 // Now call parent closure 87 do_barrier(p); 88 } 89 } 90 } 91 92 inline void ScanClosure::do_oop_nv(oop* p) { ScanClosure::do_oop_work(p); } 93 inline void ScanClosure::do_oop_nv(narrowOop* p) { ScanClosure::do_oop_work(p); } 94 95 // NOTE! Any changes made here should also be made 96 // in ScanClosure::do_oop_work() 97 template <class T> inline void FastScanClosure::do_oop_work(T* p) { 98 T heap_oop = oopDesc::load_heap_oop(p); 99 // Should we copy the obj? 100 if (!oopDesc::is_null(heap_oop)) { 101 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); 102 if ((HeapWord*)obj < _boundary) { 103 assert(!_g->to()->is_in_reserved(obj), "Scanning field twice?"); 104 oop new_obj = obj->is_forwarded() ? obj->forwardee() 105 : _g->copy_to_survivor_space(obj); 106 oopDesc::encode_store_heap_oop_not_null(p, new_obj); 107 if (_gc_barrier) { 108 // Now call parent closure 109 do_barrier(p); 110 } 111 } 112 } 113 } 114 115 inline void FastScanClosure::do_oop_nv(oop* p) { FastScanClosure::do_oop_work(p); } 116 inline void FastScanClosure::do_oop_nv(narrowOop* p) { FastScanClosure::do_oop_work(p); } 117 118 template <class T> void FilteringClosure::do_oop_work(T* p) { 119 T heap_oop = oopDesc::load_heap_oop(p); 120 if (!oopDesc::is_null(heap_oop)) { 121 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); 122 if ((HeapWord*)obj < _boundary) { 123 _cl->do_oop(p); 124 } 125 } 126 } 127 |