961 
 962   // Debugging
 963   void verify();
 964   bool verify_after_remark();
 965   void verify_ok_to_terminate() const PRODUCT_RETURN;
 966   void verify_work_stacks_empty() const PRODUCT_RETURN;
 967   void verify_overflow_empty() const PRODUCT_RETURN;
 968 
 969   // Convenience methods in support of debugging
 970   static const size_t skip_header_HeapWords() PRODUCT_RETURN0;
 971   HeapWord* block_start(const void* p) const PRODUCT_RETURN0;
 972 
 973   // Accessors
 974   CMSMarkStack* verification_mark_stack() { return &_markStack; }
 975   CMSBitMap*    verification_mark_bm()    { return &_verification_mark_bm; }
 976 
 977   // Initialization errors
 978   bool completed_initialization() { return _completed_initialization; }
 979 
 980   void print_eden_and_survivor_chunk_arrays();


 981 };
 982 
 983 class CMSExpansionCause : public AllStatic  {
 984  public:
 985   enum Cause {
 986     _no_expansion,
 987     _satisfy_free_ratio,
 988     _satisfy_promotion,
 989     _satisfy_allocation,
 990     _allocate_par_lab,
 991     _allocate_par_spooling_space,
 992     _adaptive_size_policy
 993   };
 994   // Return a string describing the cause of the expansion.
 995   static const char* to_string(CMSExpansionCause::Cause cause);
 996 };
 997 
 998 class ConcurrentMarkSweepGeneration: public CardGeneration {
 999   friend class VMStructs;
1000   friend class ConcurrentMarkSweepThread;

 961 
 962   // Debugging
 963   void verify();
 964   bool verify_after_remark();
 965   void verify_ok_to_terminate() const PRODUCT_RETURN;
 966   void verify_work_stacks_empty() const PRODUCT_RETURN;
 967   void verify_overflow_empty() const PRODUCT_RETURN;
 968 
 969   // Convenience methods in support of debugging
 970   static const size_t skip_header_HeapWords() PRODUCT_RETURN0;
 971   HeapWord* block_start(const void* p) const PRODUCT_RETURN0;
 972 
 973   // Accessors
 974   CMSMarkStack* verification_mark_stack() { return &_markStack; }
 975   CMSBitMap*    verification_mark_bm()    { return &_verification_mark_bm; }
 976 
 977   // Initialization errors
 978   bool completed_initialization() { return _completed_initialization; }
 979 
 980   void print_eden_and_survivor_chunk_arrays();
 981 
 982   ConcurrentGCTimer* gc_timer_cm() const { return _gc_timer_cm; }
 983 };
 984 
 985 class CMSExpansionCause : public AllStatic  {
 986  public:
 987   enum Cause {
 988     _no_expansion,
 989     _satisfy_free_ratio,
 990     _satisfy_promotion,
 991     _satisfy_allocation,
 992     _allocate_par_lab,
 993     _allocate_par_spooling_space,
 994     _adaptive_size_policy
 995   };
 996   // Return a string describing the cause of the expansion.
 997   static const char* to_string(CMSExpansionCause::Cause cause);
 998 };
 999 
1000 class ConcurrentMarkSweepGeneration: public CardGeneration {
1001   friend class VMStructs;
1002   friend class ConcurrentMarkSweepThread;