212   void object_iterate(ObjectClosure* cl);
 213   void safe_object_iterate(ObjectClosure* cl) { object_iterate(cl); }
 214 
 215   HeapWord* block_start(const void* addr) const;
 216   bool block_is_obj(const HeapWord* addr) const;
 217 
 218   jlong millis_since_last_gc();
 219 
 220   void prepare_for_verify();
 221   PSHeapSummary create_ps_heap_summary();
 222   virtual void print_on(outputStream* st) const;
 223   virtual void print_on_error(outputStream* st) const;
 224   virtual void print_gc_threads_on(outputStream* st) const;
 225   virtual void gc_threads_do(ThreadClosure* tc) const;
 226   virtual void print_tracing_info() const;
 227 
 228   PreGenGCValues get_pre_gc_values() const;
 229   void print_heap_change(const PreGenGCValues& pre_gc_values) const;
 230 
 231   // Used to print information about locations in the hs_err file.
 232   virtual bool print_location(outputStream* st, address addr) const;
 233 
 234   void verify(VerifyOption option /* ignored */);
 235 
 236   // Resize the young generation.  The reserved space for the
 237   // generation may be expanded in preparation for the resize.
 238   void resize_young_gen(size_t eden_size, size_t survivor_size);
 239 
 240   // Resize the old generation.  The reserved space for the
 241   // generation may be expanded in preparation for the resize.
 242   void resize_old_gen(size_t desired_free_space);
 243 
 244   // Save the tops of the spaces in all generations
 245   void record_gen_tops_before_GC() PRODUCT_RETURN;
 246 
 247   // Mangle the unused parts of all spaces in the heap
 248   void gen_mangle_unused_area() PRODUCT_RETURN;
 249 
 250   // Call these in sequential code around the processing of strong roots.
 251   class ParStrongRootsScope : public MarkScope {
 252    public:

 212   void object_iterate(ObjectClosure* cl);
 213   void safe_object_iterate(ObjectClosure* cl) { object_iterate(cl); }
 214 
 215   HeapWord* block_start(const void* addr) const;
 216   bool block_is_obj(const HeapWord* addr) const;
 217 
 218   jlong millis_since_last_gc();
 219 
 220   void prepare_for_verify();
 221   PSHeapSummary create_ps_heap_summary();
 222   virtual void print_on(outputStream* st) const;
 223   virtual void print_on_error(outputStream* st) const;
 224   virtual void print_gc_threads_on(outputStream* st) const;
 225   virtual void gc_threads_do(ThreadClosure* tc) const;
 226   virtual void print_tracing_info() const;
 227 
 228   PreGenGCValues get_pre_gc_values() const;
 229   void print_heap_change(const PreGenGCValues& pre_gc_values) const;
 230 
 231   // Used to print information about locations in the hs_err file.
 232   virtual bool print_location(outputStream* st, void* addr) const;
 233 
 234   void verify(VerifyOption option /* ignored */);
 235 
 236   // Resize the young generation.  The reserved space for the
 237   // generation may be expanded in preparation for the resize.
 238   void resize_young_gen(size_t eden_size, size_t survivor_size);
 239 
 240   // Resize the old generation.  The reserved space for the
 241   // generation may be expanded in preparation for the resize.
 242   void resize_old_gen(size_t desired_free_space);
 243 
 244   // Save the tops of the spaces in all generations
 245   void record_gen_tops_before_GC() PRODUCT_RETURN;
 246 
 247   // Mangle the unused parts of all spaces in the heap
 248   void gen_mangle_unused_area() PRODUCT_RETURN;
 249 
 250   // Call these in sequential code around the processing of strong roots.
 251   class ParStrongRootsScope : public MarkScope {
 252    public: