33 class CardTable;
  34 class G1CardTable;
  35 
  36 // This barrier is specialized to use a logging barrier to support
  37 // snapshot-at-the-beginning marking.
  38 
  39 class G1BarrierSet: public CardTableBarrierSet {
  40   friend class VMStructs;
  41  private:
  42   static SATBMarkQueueSet  _satb_mark_queue_set;
  43   static DirtyCardQueueSet _dirty_card_queue_set;
  44 
  45  public:
  46   G1BarrierSet(G1CardTable* table);
  47   ~G1BarrierSet() { }
  48 
  49   // Add "pre_val" to a set of objects that may have been disconnected from the
  50   // pre-marking object graph.
  51   static void enqueue(oop pre_val);
  52 
  53   static void enqueue_if_weak_or_archive(DecoratorSet decorators, oop value);
  54 
  55   template <class T> void write_ref_array_pre_work(T* dst, size_t count);
  56   virtual void write_ref_array_pre(oop* dst, size_t count, bool dest_uninitialized);
  57   virtual void write_ref_array_pre(narrowOop* dst, size_t count, bool dest_uninitialized);
  58 
  59   template <DecoratorSet decorators, typename T>
  60   void write_ref_field_pre(T* field);
  61 
  62   // NB: if you do a whole-heap invalidation, the "usual invariant" defined
  63   // above no longer applies.
  64   void invalidate(MemRegion mr);
  65 
  66   void write_region(MemRegion mr)         { invalidate(mr); }
  67   void write_ref_array_work(MemRegion mr) { invalidate(mr); }
  68 
  69   template <DecoratorSet decorators, typename T>
  70   void write_ref_field_post(T* field, oop new_val);
  71   void write_ref_field_post_slow(volatile jbyte* byte);
  72 
  73   virtual void on_thread_create(Thread* thread);

  33 class CardTable;
  34 class G1CardTable;
  35 
  36 // This barrier is specialized to use a logging barrier to support
  37 // snapshot-at-the-beginning marking.
  38 
  39 class G1BarrierSet: public CardTableBarrierSet {
  40   friend class VMStructs;
  41  private:
  42   static SATBMarkQueueSet  _satb_mark_queue_set;
  43   static DirtyCardQueueSet _dirty_card_queue_set;
  44 
  45  public:
  46   G1BarrierSet(G1CardTable* table);
  47   ~G1BarrierSet() { }
  48 
  49   // Add "pre_val" to a set of objects that may have been disconnected from the
  50   // pre-marking object graph.
  51   static void enqueue(oop pre_val);
  52 
  53   static void enqueue_if_weak(DecoratorSet decorators, oop value);
  54 
  55   template <class T> void write_ref_array_pre_work(T* dst, size_t count);
  56   virtual void write_ref_array_pre(oop* dst, size_t count, bool dest_uninitialized);
  57   virtual void write_ref_array_pre(narrowOop* dst, size_t count, bool dest_uninitialized);
  58 
  59   template <DecoratorSet decorators, typename T>
  60   void write_ref_field_pre(T* field);
  61 
  62   // NB: if you do a whole-heap invalidation, the "usual invariant" defined
  63   // above no longer applies.
  64   void invalidate(MemRegion mr);
  65 
  66   void write_region(MemRegion mr)         { invalidate(mr); }
  67   void write_ref_array_work(MemRegion mr) { invalidate(mr); }
  68 
  69   template <DecoratorSet decorators, typename T>
  70   void write_ref_field_post(T* field, oop new_val);
  71   void write_ref_field_post_slow(volatile jbyte* byte);
  72 
  73   virtual void on_thread_create(Thread* thread);