179   static inline void fill_with_array(HeapWord* start, size_t words, bool zap = true);
 180 
 181   // Fill with a single object (either an int array or a java.lang.Object).
 182   static inline void fill_with_object_impl(HeapWord* start, size_t words, bool zap = true);
 183 
 184   virtual void trace_heap(GCWhen::Type when, const GCTracer* tracer);
 185 
 186   // Verification functions
 187   virtual void check_for_bad_heap_word_value(HeapWord* addr, size_t size)
 188     PRODUCT_RETURN;
 189   virtual void check_for_non_bad_heap_word_value(HeapWord* addr, size_t size)
 190     PRODUCT_RETURN;
 191   debug_only(static void check_for_valid_allocation_state();)
 192 
 193  public:
 194   enum Name {
 195     None,
 196     Serial,
 197     Parallel,
 198     CMS,
 199     G1

 200   };
 201 
 202   static inline size_t filler_array_max_size() {
 203     return _filler_array_max_size;
 204   }
 205 
 206   virtual Name kind() const = 0;
 207 
 208   virtual const char* name() const = 0;
 209 
 210   /**
 211    * Returns JNI error code JNI_ENOMEM if memory could not be allocated,
 212    * and JNI_OK on success.
 213    */
 214   virtual jint initialize() = 0;
 215 
 216   // In many heaps, there will be a need to perform some initialization activities
 217   // after the Universe is fully formed, but before general heap allocation is allowed.
 218   // This is the correct place to place such initialization methods.
 219   virtual void post_initialize();

 179   static inline void fill_with_array(HeapWord* start, size_t words, bool zap = true);
 180 
 181   // Fill with a single object (either an int array or a java.lang.Object).
 182   static inline void fill_with_object_impl(HeapWord* start, size_t words, bool zap = true);
 183 
 184   virtual void trace_heap(GCWhen::Type when, const GCTracer* tracer);
 185 
 186   // Verification functions
 187   virtual void check_for_bad_heap_word_value(HeapWord* addr, size_t size)
 188     PRODUCT_RETURN;
 189   virtual void check_for_non_bad_heap_word_value(HeapWord* addr, size_t size)
 190     PRODUCT_RETURN;
 191   debug_only(static void check_for_valid_allocation_state();)
 192 
 193  public:
 194   enum Name {
 195     None,
 196     Serial,
 197     Parallel,
 198     CMS,
 199     G1,
 200     Epsilon,
 201   };
 202 
 203   static inline size_t filler_array_max_size() {
 204     return _filler_array_max_size;
 205   }
 206 
 207   virtual Name kind() const = 0;
 208 
 209   virtual const char* name() const = 0;
 210 
 211   /**
 212    * Returns JNI error code JNI_ENOMEM if memory could not be allocated,
 213    * and JNI_OK on success.
 214    */
 215   virtual jint initialize() = 0;
 216 
 217   // In many heaps, there will be a need to perform some initialization activities
 218   // after the Universe is fully formed, but before general heap allocation is allowed.
 219   // This is the correct place to place such initialization methods.
 220   virtual void post_initialize();