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24 
25 #ifndef SHARE_GC_G1_G1FULLGCPREPARETASK_HPP
26 #define SHARE_GC_G1_G1FULLGCPREPARETASK_HPP
27 
28 #include "gc/g1/g1FullGCCompactionPoint.hpp"
29 #include "gc/g1/g1FullGCScope.hpp"
30 #include "gc/g1/g1FullGCTask.hpp"
31 #include "gc/g1/g1RootProcessor.hpp"
32 #include "gc/g1/g1StringDedup.hpp"
33 #include "gc/g1/heapRegionManager.hpp"
34 #include "gc/shared/referenceProcessor.hpp"
35 
36 class G1CMBitMap;
37 class G1FullCollector;
38 
39 class G1FullGCPrepareTask : public G1FullGCTask {
40 protected:
41   volatile bool     _freed_regions;
42   HeapRegionClaimer _hrclaimer;
43 
44   void set_freed_regions();
45 
46 public:
47   G1FullGCPrepareTask(G1FullCollector* collector);
48   void work(uint worker_id);
49   void prepare_serial_compaction();
50   bool has_freed_regions();
51 
52 protected:
53   class G1CalculatePointersClosure : public HeapRegionClosure {
54   protected:
55     G1CollectedHeap* _g1h;
56     G1FullCollector* _collector;
57     G1CMBitMap* _bitmap;
58     G1FullGCCompactionPoint* _cp;
59     bool _regions_freed;
60 
61     virtual void prepare_for_compaction(HeapRegion* hr);
62     void prepare_for_compaction_work(G1FullGCCompactionPoint* cp, HeapRegion* hr);
63     void free_humongous_region(HeapRegion* hr);
64     void free_open_archive_region(HeapRegion* hr);
65 
66     void reset_region_metadata(HeapRegion* hr);
67 
68   public:
69     G1CalculatePointersClosure(G1FullCollector* collector,
70                                G1FullGCCompactionPoint* cp);
71 
72     bool do_heap_region(HeapRegion* hr);
73     bool freed_regions();
74   };
75 
76   class G1PrepareCompactLiveClosure : public StackObj {
77     G1FullGCCompactionPoint* _cp;
78 
79   public:
80     G1PrepareCompactLiveClosure(G1FullGCCompactionPoint* cp);
81     size_t apply(oop object);
82   };
83 
84   class G1RePrepareClosure : public StackObj {
85     G1FullGCCompactionPoint* _cp;
86     HeapRegion* _current;
87 
88   public:
G1RePrepareClosure(G1FullGCCompactionPoint * hrcp,HeapRegion * hr)89     G1RePrepareClosure(G1FullGCCompactionPoint* hrcp,
90                        HeapRegion* hr) :
91         _cp(hrcp),
92         _current(hr) { }
93 
94     size_t apply(oop object);
95   };
96 };
97 
98 #endif // SHARE_GC_G1_G1FULLGCPREPARETASK_HPP
99