53 
  54 inline void ParScanWeakRefClosure::do_oop_nv(oop* p)       { ParScanWeakRefClosure::do_oop_work(p); }
  55 inline void ParScanWeakRefClosure::do_oop_nv(narrowOop* p) { ParScanWeakRefClosure::do_oop_work(p); }
  56 
  57 template <class T> inline void ParScanClosure::par_do_barrier(T* p) {
  58   assert(generation()->is_in_reserved(p), "expected ref in generation");
  59   assert(!oopDesc::is_null(*p), "expected non-null object");
  60   oop obj = oopDesc::load_decode_heap_oop_not_null(p);
  61   // If p points to a younger generation, mark the card.
  62   if ((HeapWord*)obj < gen_boundary()) {
  63     rs()->write_ref_field_gc_par(p, obj);
  64   }
  65 }
  66 
  67 template <class T>
  68 inline void ParScanClosure::do_oop_work(T* p,
  69                                         bool gc_barrier,
  70                                         bool root_scan) {
  71   assert((!Universe::heap()->is_in_reserved(p) ||
  72           generation()->is_in_reserved(p))
  73          && (generation()->level() == 0 || gc_barrier),
  74          "The gen must be right, and we must be doing the barrier "
  75          "in older generations.");
  76   T heap_oop = oopDesc::load_heap_oop(p);
  77   if (!oopDesc::is_null(heap_oop)) {
  78     oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
  79     if ((HeapWord*)obj < _boundary) {
  80 #ifndef PRODUCT
  81       if (_g->to()->is_in_reserved(obj)) {
  82         tty->print_cr("Scanning field (" PTR_FORMAT ") twice?", p2i(p));
  83         GenCollectedHeap* gch =  (GenCollectedHeap*)Universe::heap();
  84         Space* sp = gch->space_containing(p);
  85         oop obj = oop(sp->block_start(p));
  86         assert((HeapWord*)obj < (HeapWord*)p, "Error");
  87         tty->print_cr("Object: " PTR_FORMAT, p2i((void *)obj));
  88         tty->print_cr("-------");
  89         obj->print();
  90         tty->print_cr("-----");
  91         tty->print_cr("Heap:");
  92         tty->print_cr("-----");
  93         gch->print();

  53 
  54 inline void ParScanWeakRefClosure::do_oop_nv(oop* p)       { ParScanWeakRefClosure::do_oop_work(p); }
  55 inline void ParScanWeakRefClosure::do_oop_nv(narrowOop* p) { ParScanWeakRefClosure::do_oop_work(p); }
  56 
  57 template <class T> inline void ParScanClosure::par_do_barrier(T* p) {
  58   assert(generation()->is_in_reserved(p), "expected ref in generation");
  59   assert(!oopDesc::is_null(*p), "expected non-null object");
  60   oop obj = oopDesc::load_decode_heap_oop_not_null(p);
  61   // If p points to a younger generation, mark the card.
  62   if ((HeapWord*)obj < gen_boundary()) {
  63     rs()->write_ref_field_gc_par(p, obj);
  64   }
  65 }
  66 
  67 template <class T>
  68 inline void ParScanClosure::do_oop_work(T* p,
  69                                         bool gc_barrier,
  70                                         bool root_scan) {
  71   assert((!Universe::heap()->is_in_reserved(p) ||
  72           generation()->is_in_reserved(p))
  73          && (generation() == GenCollectedHeap::heap()->young_gen() || gc_barrier),
  74          "The gen must be right, and we must be doing the barrier "
  75          "in older generations.");
  76   T heap_oop = oopDesc::load_heap_oop(p);
  77   if (!oopDesc::is_null(heap_oop)) {
  78     oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
  79     if ((HeapWord*)obj < _boundary) {
  80 #ifndef PRODUCT
  81       if (_g->to()->is_in_reserved(obj)) {
  82         tty->print_cr("Scanning field (" PTR_FORMAT ") twice?", p2i(p));
  83         GenCollectedHeap* gch =  (GenCollectedHeap*)Universe::heap();
  84         Space* sp = gch->space_containing(p);
  85         oop obj = oop(sp->block_start(p));
  86         assert((HeapWord*)obj < (HeapWord*)p, "Error");
  87         tty->print_cr("Object: " PTR_FORMAT, p2i((void *)obj));
  88         tty->print_cr("-------");
  89         obj->print();
  90         tty->print_cr("-----");
  91         tty->print_cr("Heap:");
  92         tty->print_cr("-----");
  93         gch->print();