src/share/vm/gc/g1/g1BiasedArray.hpp

rev 8461 : imported patch webrev1.patch
rev 8462 : [mq]: version3

*** 126,150 ****
      idx_t biased_index = ((uintptr_t)value) >> this->shift_by();
      this->verify_biased_index(biased_index);
      return biased_base()[biased_index];
    }
  
!   // Return as a uint the index of the element of the given array that 
!   // covers the given word in the heap.
!   uint get_index_by_address(HeapWord* value) const {
      idx_t biased_index = ((uintptr_t)value) >> this->shift_by();
      this->verify_biased_index(biased_index);
!     return (uint)biased_index - (uint)_bias;
    }
  
    // Set the value of the array entry that corresponds to the given array.
    void set_by_address(HeapWord * address, T value) {
      idx_t biased_index = ((uintptr_t)address) >> this->shift_by();
      this->verify_biased_index(biased_index);
      biased_base()[biased_index] = value;
    }
  
  protected:
    // Returns the address of the element the given address maps to
    T* address_mapped_to(HeapWord* address) {
      idx_t biased_index = ((uintptr_t)address) >> this->shift_by();
      this->verify_biased_index_inclusive_end(biased_index);
--- 126,162 ----
      idx_t biased_index = ((uintptr_t)value) >> this->shift_by();
      this->verify_biased_index(biased_index);
      return biased_base()[biased_index];
    }
  
!   // Return the index of the element of the given array that covers the given 
!   // word in the heap.
!   idx_t get_index_by_address(HeapWord* value) const {
      idx_t biased_index = ((uintptr_t)value) >> this->shift_by();
      this->verify_biased_index(biased_index);
!     return biased_index - _bias;
    }
  
    // Set the value of the array entry that corresponds to the given array.
    void set_by_address(HeapWord * address, T value) {
      idx_t biased_index = ((uintptr_t)address) >> this->shift_by();
      this->verify_biased_index(biased_index);
      biased_base()[biased_index] = value;
    }
  
+   // Set the value of all array entries that correspond to addresses
+   // in the specified MemRegion.
+   void set_by_address(MemRegion range, T value) {
+     idx_t biased_start = ((uintptr_t)range.start()) >> this->shift_by();
+     idx_t biased_last = ((uintptr_t)range.last()) >> this->shift_by();
+     this->verify_biased_index(biased_start);
+     this->verify_biased_index(biased_last);
+     for (idx_t i = biased_start; i <= biased_last; i++) {
+       biased_base()[i] = value;
+     }
+   }
+ 
  protected:
    // Returns the address of the element the given address maps to
    T* address_mapped_to(HeapWord* address) {
      idx_t biased_index = ((uintptr_t)address) >> this->shift_by();
      this->verify_biased_index_inclusive_end(biased_index);