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src/share/vm/memory/genCollectedHeap.hpp

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rev 7318 : 8064721: The card tables only ever need two covering regions


 104   // allocation request that failed in the youngest generation that should
 105   // have handled it (including collection, expansion, etc.)
 106   HeapWord* satisfy_failed_allocation(size_t size, bool is_tlab);
 107 
 108   // Callback from VM_GenCollectFull operation.
 109   // Perform a full collection of the first max_level+1 generations.
 110   virtual void do_full_collection(bool clear_all_soft_refs);
 111   void do_full_collection(bool clear_all_soft_refs, int max_level);
 112 
 113   // Does the "cause" of GC indicate that
 114   // we absolutely __must__ clear soft refs?
 115   bool must_clear_all_soft_refs();
 116 
 117 public:
 118   GenCollectedHeap(GenCollectorPolicy *policy);
 119 
 120   GCStats* gc_stats(int level) const;
 121 
 122   // Returns JNI_OK on success
 123   virtual jint initialize();
 124   char* allocate(size_t alignment,
 125                  size_t* _total_reserved, int* _n_covered_regions,
 126                  ReservedSpace* heap_rs);
 127 
 128   // Does operations required after initialization has been done.
 129   void post_initialize();
 130 
 131   // Initialize ("weak") refs processing support
 132   virtual void ref_processing_init();
 133 
 134   virtual CollectedHeap::Name kind() const {
 135     return CollectedHeap::GenCollectedHeap;
 136   }
 137 
 138   // The generational collector policy.
 139   GenCollectorPolicy* gen_policy() const { return _gen_policy; }
 140   virtual CollectorPolicy* collector_policy() const { return (CollectorPolicy*) gen_policy(); }
 141 
 142   // Adaptive size policy
 143   virtual AdaptiveSizePolicy* size_policy() {
 144     return gen_policy()->size_policy();
 145   }
 146 




 104   // allocation request that failed in the youngest generation that should
 105   // have handled it (including collection, expansion, etc.)
 106   HeapWord* satisfy_failed_allocation(size_t size, bool is_tlab);
 107 
 108   // Callback from VM_GenCollectFull operation.
 109   // Perform a full collection of the first max_level+1 generations.
 110   virtual void do_full_collection(bool clear_all_soft_refs);
 111   void do_full_collection(bool clear_all_soft_refs, int max_level);
 112 
 113   // Does the "cause" of GC indicate that
 114   // we absolutely __must__ clear soft refs?
 115   bool must_clear_all_soft_refs();
 116 
 117 public:
 118   GenCollectedHeap(GenCollectorPolicy *policy);
 119 
 120   GCStats* gc_stats(int level) const;
 121 
 122   // Returns JNI_OK on success
 123   virtual jint initialize();
 124   char* allocate(size_t alignment, size_t* _total_reserved, ReservedSpace* heap_rs);


 125 
 126   // Does operations required after initialization has been done.
 127   void post_initialize();
 128 
 129   // Initialize ("weak") refs processing support
 130   virtual void ref_processing_init();
 131 
 132   virtual CollectedHeap::Name kind() const {
 133     return CollectedHeap::GenCollectedHeap;
 134   }
 135 
 136   // The generational collector policy.
 137   GenCollectorPolicy* gen_policy() const { return _gen_policy; }
 138   virtual CollectorPolicy* collector_policy() const { return (CollectorPolicy*) gen_policy(); }
 139 
 140   // Adaptive size policy
 141   virtual AdaptiveSizePolicy* size_policy() {
 142     return gen_policy()->size_policy();
 143   }
 144 


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