75 // Mark live objects
76 static void mark_sweep_phase1(bool& marked_for_deopt,
77 bool clear_all_softrefs);
78 // Calculate new addresses
79 static void mark_sweep_phase2();
80 // Update pointers
81 static void mark_sweep_phase3();
82 // Move objects to new positions
83 static void mark_sweep_phase4();
84
85 static void allocate_stacks();
86 static void prepare_compaction();
87 static void prepare_compaction_work(G1PrepareCompactClosure* blk);
88 };
89
90 class G1PrepareCompactClosure : public HeapRegionClosure {
91 protected:
92 G1CollectedHeap* _g1h;
93 ModRefBarrierSet* _mrbs;
94 CompactPoint _cp;
95 HeapRegionSetCount _humongous_regions_removed;
96
97 virtual void prepare_for_compaction(HeapRegion* hr, HeapWord* end);
98 void prepare_for_compaction_work(CompactPoint* cp, HeapRegion* hr, HeapWord* end);
99 void free_humongous_region(HeapRegion* hr);
100 bool is_cp_initialized() const { return _cp.space != NULL; }
101
102 public:
103 G1PrepareCompactClosure() :
104 _g1h(G1CollectedHeap::heap()),
105 _mrbs(_g1h->g1_barrier_set()),
106 _humongous_regions_removed() { }
107
108 void update_sets();
109 bool doHeapRegion(HeapRegion* hr);
110 };
111
112 // G1ArchiveRegionMap is a boolean array used to mark G1 regions as
113 // archive regions. This allows a quick check for whether an object
114 // should not be marked because it is in an archive region.
115 class G1ArchiveRegionMap : public G1BiasedMappedArray<bool> {
116 protected:
117 bool default_value() const { return false; }
118 };
119
120 #endif // SHARE_VM_GC_G1_G1MARKSWEEP_HPP
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75 // Mark live objects
76 static void mark_sweep_phase1(bool& marked_for_deopt,
77 bool clear_all_softrefs);
78 // Calculate new addresses
79 static void mark_sweep_phase2();
80 // Update pointers
81 static void mark_sweep_phase3();
82 // Move objects to new positions
83 static void mark_sweep_phase4();
84
85 static void allocate_stacks();
86 static void prepare_compaction();
87 static void prepare_compaction_work(G1PrepareCompactClosure* blk);
88 };
89
90 class G1PrepareCompactClosure : public HeapRegionClosure {
91 protected:
92 G1CollectedHeap* _g1h;
93 ModRefBarrierSet* _mrbs;
94 CompactPoint _cp;
95 uint _humongous_regions_removed;
96
97 virtual void prepare_for_compaction(HeapRegion* hr, HeapWord* end);
98 void prepare_for_compaction_work(CompactPoint* cp, HeapRegion* hr, HeapWord* end);
99 void free_humongous_region(HeapRegion* hr);
100 bool is_cp_initialized() const { return _cp.space != NULL; }
101
102 public:
103 G1PrepareCompactClosure() :
104 _g1h(G1CollectedHeap::heap()),
105 _mrbs(_g1h->g1_barrier_set()),
106 _humongous_regions_removed(0) { }
107
108 void update_sets();
109 bool doHeapRegion(HeapRegion* hr);
110 };
111
112 // G1ArchiveRegionMap is a boolean array used to mark G1 regions as
113 // archive regions. This allows a quick check for whether an object
114 // should not be marked because it is in an archive region.
115 class G1ArchiveRegionMap : public G1BiasedMappedArray<bool> {
116 protected:
117 bool default_value() const { return false; }
118 };
119
120 #endif // SHARE_VM_GC_G1_G1MARKSWEEP_HPP
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