673 // The space that this buffer allocates into.
674 CompactibleFreeListSpace* _cfls;
675
676 // Our local free lists.
677 AdaptiveFreeList<FreeChunk> _indexedFreeList[CompactibleFreeListSpace::IndexSetSize];
678
679 // Initialized from a command-line arg.
680
681 // Allocation statistics in support of dynamic adjustment of
682 // #blocks to claim per get_from_global_pool() call below.
683 static AdaptiveWeightedAverage
684 _blocks_to_claim [CompactibleFreeListSpace::IndexSetSize];
685 static size_t _global_num_blocks [CompactibleFreeListSpace::IndexSetSize];
686 static uint _global_num_workers[CompactibleFreeListSpace::IndexSetSize];
687 size_t _num_blocks [CompactibleFreeListSpace::IndexSetSize];
688
689 // Internal work method
690 void get_from_global_pool(size_t word_sz, AdaptiveFreeList<FreeChunk>* fl);
691
692 public:
693 CFLS_LAB(CompactibleFreeListSpace* cfls);
694
695 // Allocate and return a block of the given size, or else return NULL.
696 HeapWord* alloc(size_t word_sz);
697
698 // Return any unused portions of the buffer to the global pool.
699 void retire(int tid);
700
701 // Dynamic OldPLABSize sizing
702 static void compute_desired_plab_size();
703 // When the settings are modified from default static initialization
704 static void modify_initialization(size_t n, unsigned wt);
705 };
706
707 size_t PromotionInfo::refillSize() const {
708 const size_t CMSSpoolBlockSize = 256;
709 const size_t sz = heap_word_size(sizeof(SpoolBlock) + sizeof(markOop)
710 * CMSSpoolBlockSize);
711 return CompactibleFreeListSpace::adjustObjectSize(sz);
712 }
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673 // The space that this buffer allocates into.
674 CompactibleFreeListSpace* _cfls;
675
676 // Our local free lists.
677 AdaptiveFreeList<FreeChunk> _indexedFreeList[CompactibleFreeListSpace::IndexSetSize];
678
679 // Initialized from a command-line arg.
680
681 // Allocation statistics in support of dynamic adjustment of
682 // #blocks to claim per get_from_global_pool() call below.
683 static AdaptiveWeightedAverage
684 _blocks_to_claim [CompactibleFreeListSpace::IndexSetSize];
685 static size_t _global_num_blocks [CompactibleFreeListSpace::IndexSetSize];
686 static uint _global_num_workers[CompactibleFreeListSpace::IndexSetSize];
687 size_t _num_blocks [CompactibleFreeListSpace::IndexSetSize];
688
689 // Internal work method
690 void get_from_global_pool(size_t word_sz, AdaptiveFreeList<FreeChunk>* fl);
691
692 public:
693 static const int _default_dynamic_old_plab_size = 16;
694 static const int _default_static_old_plab_size = 50;
695
696 CFLS_LAB(CompactibleFreeListSpace* cfls);
697
698 // Allocate and return a block of the given size, or else return NULL.
699 HeapWord* alloc(size_t word_sz);
700
701 // Return any unused portions of the buffer to the global pool.
702 void retire(int tid);
703
704 // Dynamic OldPLABSize sizing
705 static void compute_desired_plab_size();
706 // When the settings are modified from default static initialization
707 static void modify_initialization(size_t n, unsigned wt);
708 };
709
710 size_t PromotionInfo::refillSize() const {
711 const size_t CMSSpoolBlockSize = 256;
712 const size_t sz = heap_word_size(sizeof(SpoolBlock) + sizeof(markOop)
713 * CMSSpoolBlockSize);
714 return CompactibleFreeListSpace::adjustObjectSize(sz);
715 }
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