73 class CompactibleFreeListSpace: public CompactibleSpace {

    73 class CompactibleFreeListSpace: public CompactibleSpace {

    74   friend class VMStructs;

    74   friend class VMStructs;

    75   friend class ConcurrentMarkSweepGeneration;

    75   friend class ConcurrentMarkSweepGeneration;

    76   friend class CMSCollector;

    76   friend class CMSCollector;

    77   // Local alloc buffer for promotion into this space.

    77   // Local alloc buffer for promotion into this space.

    79   // Allow scan_and_* functions to call (private) overrides of the auxiliary functions on this class

    79   // Allow scan_and_* functions to call (private) overrides of the auxiliary functions on this class

    80   template <typename SpaceType>

    80   template <typename SpaceType>

    81   friend void CompactibleSpace::scan_and_adjust_pointers(SpaceType* space);

    81   friend void CompactibleSpace::scan_and_adjust_pointers(SpaceType* space);

    82   template <typename SpaceType>

    82   template <typename SpaceType>

    83   friend void CompactibleSpace::scan_and_compact(SpaceType* space);

    83   friend void CompactibleSpace::scan_and_compact(SpaceType* space);

   660   double flsFrag() const;

   660   double flsFrag() const;

   661 };

   661 };

   662 

   662 

   663 // A parallel-GC-thread-local allocation buffer for allocation into a

   663 // A parallel-GC-thread-local allocation buffer for allocation into a

   664 // CompactibleFreeListSpace.

   664 // CompactibleFreeListSpace.

   666   // The space that this buffer allocates into.

   666   // The space that this buffer allocates into.

   667   CompactibleFreeListSpace* _cfls;

   667   CompactibleFreeListSpace* _cfls;

   668 

   668 

   669   // Our local free lists.

   669   // Our local free lists.

   670   AdaptiveFreeList<FreeChunk> _indexedFreeList[CompactibleFreeListSpace::IndexSetSize];

   670   AdaptiveFreeList<FreeChunk> _indexedFreeList[CompactibleFreeListSpace::IndexSetSize];

   684 

   684 

   685 public:

   685 public:

   686   static const int _default_dynamic_old_plab_size = 16;

   686   static const int _default_dynamic_old_plab_size = 16;

   687   static const int _default_static_old_plab_size  = 50;

   687   static const int _default_static_old_plab_size  = 50;

   688 

   688 

   690 

   690 

   691   // Allocate and return a block of the given size, or else return NULL.

   691   // Allocate and return a block of the given size, or else return NULL.

   692   HeapWord* alloc(size_t word_sz);

   692   HeapWord* alloc(size_t word_sz);

   693 

   693 

   694   // Return any unused portions of the buffer to the global pool.

   694   // Return any unused portions of the buffer to the global pool.