50   void retire_alloc_buffers_before_full_gc();
  51 
  52   GenerationCounters*   _gen_counters;
  53   CSpaceCounters*       _space_counters;
  54 
  55  public:
  56   TenuredGeneration(ReservedSpace rs, size_t initial_byte_size, int level,
  57                     GenRemSet* remset);
  58 
  59   Generation::Name kind() { return Generation::MarkSweepCompact; }
  60 
  61   // Printing
  62   const char* name() const;
  63   const char* short_name() const { return "Tenured"; }
  64   bool must_be_youngest() const { return false; }
  65   bool must_be_oldest() const { return true; }
  66 
  67   // Does a "full" (forced) collection invoked on this generation collect
  68   // all younger generations as well? Note that this is a
  69   // hack to allow the collection of the younger gen first if the flag is
  70   // set. This is better than using th policy's should_collect_gen0_first()
  71   // since that causes us to do an extra unnecessary pair of restart-&-stop-world.
  72   virtual bool full_collects_younger_generations() const {
  73     return !CollectGen0First;
  74   }
  75 
  76   virtual void gc_prologue(bool full);
  77   virtual void gc_epilogue(bool full);
  78   bool should_collect(bool   full,
  79                       size_t word_size,
  80                       bool   is_tlab);
  81 
  82   virtual void collect(bool full,
  83                        bool clear_all_soft_refs,
  84                        size_t size,
  85                        bool is_tlab);
  86   virtual void compute_new_size();
  87 
  88 #if INCLUDE_ALL_GCS
  89   // Overrides.
  90   virtual oop par_promote(int thread_num,
  91                           oop obj, markOop m, size_t word_sz);

  50   void retire_alloc_buffers_before_full_gc();
  51 
  52   GenerationCounters*   _gen_counters;
  53   CSpaceCounters*       _space_counters;
  54 
  55  public:
  56   TenuredGeneration(ReservedSpace rs, size_t initial_byte_size, int level,
  57                     GenRemSet* remset);
  58 
  59   Generation::Name kind() { return Generation::MarkSweepCompact; }
  60 
  61   // Printing
  62   const char* name() const;
  63   const char* short_name() const { return "Tenured"; }
  64   bool must_be_youngest() const { return false; }
  65   bool must_be_oldest() const { return true; }
  66 
  67   // Does a "full" (forced) collection invoked on this generation collect
  68   // all younger generations as well? Note that this is a
  69   // hack to allow the collection of the younger gen first if the flag is
  70   // set.

  71   virtual bool full_collects_younger_generations() const {
  72     return !CollectGen0First;
  73   }
  74 
  75   virtual void gc_prologue(bool full);
  76   virtual void gc_epilogue(bool full);
  77   bool should_collect(bool   full,
  78                       size_t word_size,
  79                       bool   is_tlab);
  80 
  81   virtual void collect(bool full,
  82                        bool clear_all_soft_refs,
  83                        size_t size,
  84                        bool is_tlab);
  85   virtual void compute_new_size();
  86 
  87 #if INCLUDE_ALL_GCS
  88   // Overrides.
  89   virtual oop par_promote(int thread_num,
  90                           oop obj, markOop m, size_t word_sz);