145   size_t used_in_words() const;
 146   size_t free_in_words() const;
 147 
 148   // The max this generation can grow to
 149   size_t max_size() const { return _reserved.byte_size(); }
 150 
 151   // The max this generation can grow to if the boundary between
 152   // the generations are allowed to move.
 153   size_t gen_size_limit() const { return _max_gen_size; }
 154 
 155   bool is_maximal_no_gc() const {
 156     return true;  // Never expands except at a GC
 157   }
 158 
 159   // Allocation
 160   HeapWord* allocate(size_t word_size) {
 161     HeapWord* result = eden_space()->cas_allocate(word_size);
 162     return result;
 163   }
 164 
 165   HeapWord** top_addr() const   { return eden_space()->top_addr(); }
 166   HeapWord** end_addr() const   { return eden_space()->end_addr(); }
 167 
 168   // Iteration.
 169   void oop_iterate(ExtendedOopClosure* cl);
 170   void object_iterate(ObjectClosure* cl);
 171 
 172   virtual void reset_after_change();
 173   virtual void reset_survivors_after_shrink();
 174 
 175   // Performance Counter support
 176   void update_counters();
 177 
 178   // Debugging - do not use for time critical operations
 179   void print() const;
 180   void print_on(outputStream* st) const;
 181   void print_used_change(size_t prev_used) const;
 182   virtual const char* name() const { return "PSYoungGen"; }
 183 
 184   void verify();
 185 

 145   size_t used_in_words() const;
 146   size_t free_in_words() const;
 147 
 148   // The max this generation can grow to
 149   size_t max_size() const { return _reserved.byte_size(); }
 150 
 151   // The max this generation can grow to if the boundary between
 152   // the generations are allowed to move.
 153   size_t gen_size_limit() const { return _max_gen_size; }
 154 
 155   bool is_maximal_no_gc() const {
 156     return true;  // Never expands except at a GC
 157   }
 158 
 159   // Allocation
 160   HeapWord* allocate(size_t word_size) {
 161     HeapWord* result = eden_space()->cas_allocate(word_size);
 162     return result;
 163   }
 164 
 165   HeapWord* volatile* top_addr() const   { return eden_space()->top_addr(); }
 166   HeapWord** end_addr() const   { return eden_space()->end_addr(); }
 167 
 168   // Iteration.
 169   void oop_iterate(ExtendedOopClosure* cl);
 170   void object_iterate(ObjectClosure* cl);
 171 
 172   virtual void reset_after_change();
 173   virtual void reset_survivors_after_shrink();
 174 
 175   // Performance Counter support
 176   void update_counters();
 177 
 178   // Debugging - do not use for time critical operations
 179   void print() const;
 180   void print_on(outputStream* st) const;
 181   void print_used_change(size_t prev_used) const;
 182   virtual const char* name() const { return "PSYoungGen"; }
 183 
 184   void verify();
 185