src/share/vm/gc_implementation/g1/g1HotCardCache.cpp

rev 7184 : 6979279
rev 7185 : [mq]: rev1

*** 41,50 ****
--- 41,51 ----
  
      _n_hot = 0;
      _hot_cache_idx = 0;
  
      // For refining the cards in the hot cache in parallel
+     _hot_cache_par_chunk_size = ClaimChunkSize;
      _hot_cache_par_claimed_idx = 0;
  
      _card_counts.initialize(card_counts_storage);
    }
  }
*** 96,106 ****
    assert(_hot_cache != NULL, "Logic");
    assert(!use_cache(), "cache should be disabled");
    int start_idx;
  
    while ((start_idx = _hot_cache_par_claimed_idx) < _n_hot) { // read once
!     int end_idx = start_idx + ClaimChunkSize;
  
      if (start_idx ==
          Atomic::cmpxchg(end_idx, &_hot_cache_par_claimed_idx, start_idx)) {
        // The current worker has successfully claimed the chunk [start_idx..end_idx)
        end_idx = MIN2(end_idx, _n_hot);
--- 97,107 ----
    assert(_hot_cache != NULL, "Logic");
    assert(!use_cache(), "cache should be disabled");
    int start_idx;
  
    while ((start_idx = _hot_cache_par_claimed_idx) < _n_hot) { // read once
!     int end_idx = start_idx + _hot_cache_par_chunk_size;
  
      if (start_idx ==
          Atomic::cmpxchg(end_idx, &_hot_cache_par_claimed_idx, start_idx)) {
        // The current worker has successfully claimed the chunk [start_idx..end_idx)
        end_idx = MIN2(end_idx, _n_hot);