62   virtual void write_ref_array_pre(narrowOop* dst, size_t count, bool dest_uninitialized);
  63 
  64   template <DecoratorSet decorators, typename T>
  65   void write_ref_field_pre(T* field);
  66 
  67   // NB: if you do a whole-heap invalidation, the "usual invariant" defined
  68   // above no longer applies.
  69   void invalidate(MemRegion mr);
  70 
  71   void write_region(MemRegion mr)         { invalidate(mr); }
  72   void write_ref_array_work(MemRegion mr) { invalidate(mr); }
  73 
  74   template <DecoratorSet decorators, typename T>
  75   void write_ref_field_post(T* field, oop new_val);
  76   void write_ref_field_post_slow(volatile jbyte* byte);
  77 
  78   virtual void on_thread_create(Thread* thread);
  79   virtual void on_thread_destroy(Thread* thread);
  80   virtual void on_thread_attach(Thread* thread);
  81   virtual void on_thread_detach(Thread* thread);

  82 
  83   BufferNode::Allocator& satb_mark_queue_buffer_allocator();
  84   BufferNode::Allocator& dirty_card_queue_buffer_allocator();
  85 
  86   static G1SATBMarkQueueSet& satb_mark_queue_set() {
  87     return g1_barrier_set()->_satb_mark_queue_set;
  88   }
  89 
  90   static G1DirtyCardQueueSet& dirty_card_queue_set() {
  91     return g1_barrier_set()->_dirty_card_queue_set;
  92   }
  93 
  94   // Callbacks for runtime accesses.
  95   template <DecoratorSet decorators, typename BarrierSetT = G1BarrierSet>
  96   class AccessBarrier: public ModRefBarrierSet::AccessBarrier<decorators, BarrierSetT> {
  97     typedef ModRefBarrierSet::AccessBarrier<decorators, BarrierSetT> ModRef;
  98     typedef BarrierSet::AccessBarrier<decorators, BarrierSetT> Raw;
  99 
 100   public:
 101     // Needed for loads on non-heap weak references

  62   virtual void write_ref_array_pre(narrowOop* dst, size_t count, bool dest_uninitialized);
  63 
  64   template <DecoratorSet decorators, typename T>
  65   void write_ref_field_pre(T* field);
  66 
  67   // NB: if you do a whole-heap invalidation, the "usual invariant" defined
  68   // above no longer applies.
  69   void invalidate(MemRegion mr);
  70 
  71   void write_region(MemRegion mr)         { invalidate(mr); }
  72   void write_ref_array_work(MemRegion mr) { invalidate(mr); }
  73 
  74   template <DecoratorSet decorators, typename T>
  75   void write_ref_field_post(T* field, oop new_val);
  76   void write_ref_field_post_slow(volatile jbyte* byte);
  77 
  78   virtual void on_thread_create(Thread* thread);
  79   virtual void on_thread_destroy(Thread* thread);
  80   virtual void on_thread_attach(Thread* thread);
  81   virtual void on_thread_detach(Thread* thread);
  82   virtual bool needs_sts_sync_on_attach_detach() { return true; }
  83 
  84   BufferNode::Allocator& satb_mark_queue_buffer_allocator();
  85   BufferNode::Allocator& dirty_card_queue_buffer_allocator();
  86 
  87   static G1SATBMarkQueueSet& satb_mark_queue_set() {
  88     return g1_barrier_set()->_satb_mark_queue_set;
  89   }
  90 
  91   static G1DirtyCardQueueSet& dirty_card_queue_set() {
  92     return g1_barrier_set()->_dirty_card_queue_set;
  93   }
  94 
  95   // Callbacks for runtime accesses.
  96   template <DecoratorSet decorators, typename BarrierSetT = G1BarrierSet>
  97   class AccessBarrier: public ModRefBarrierSet::AccessBarrier<decorators, BarrierSetT> {
  98     typedef ModRefBarrierSet::AccessBarrier<decorators, BarrierSetT> ModRef;
  99     typedef BarrierSet::AccessBarrier<decorators, BarrierSetT> Raw;
 100 
 101   public:
 102     // Needed for loads on non-heap weak references