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src/hotspot/share/gc/g1/g1FullGCPrepareTask.hpp

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 17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 18  *
 19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 20  * or visit www.oracle.com if you need additional information or have any
 21  * questions.
 22  *
 23  */
 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/heapRegionManager.hpp"
 33 #include "gc/shared/referenceProcessor.hpp"
 34 
 35 class G1CMBitMap;
 36 class G1FullCollector;

 37 
 38 class G1FullGCPrepareTask : public G1FullGCTask {
 39 protected:
 40   volatile bool     _freed_regions;
 41   HeapRegionClaimer _hrclaimer;
 42 
 43   void set_freed_regions();
 44 
 45 public:
 46   G1FullGCPrepareTask(G1FullCollector* collector);
 47   void work(uint worker_id);
 48   void prepare_serial_compaction();
 49   bool has_freed_regions();
 50 
 51 protected:
 52   class G1CalculatePointersClosure : public HeapRegionClosure {
 53   private:
 54     template<bool is_humongous>
 55     void free_pinned_region(HeapRegion* hr);
 56   protected:

 59     G1CMBitMap* _bitmap;
 60     G1FullGCCompactionPoint* _cp;
 61     bool _regions_freed;
 62 
 63     bool should_compact(HeapRegion* hr);
 64     void prepare_for_compaction(HeapRegion* hr);
 65     void prepare_for_compaction_work(G1FullGCCompactionPoint* cp, HeapRegion* hr);
 66 
 67     void reset_region_metadata(HeapRegion* hr);
 68 
 69   public:
 70     G1CalculatePointersClosure(G1FullCollector* collector,
 71                                G1FullGCCompactionPoint* cp);
 72 
 73     bool do_heap_region(HeapRegion* hr);
 74     bool freed_regions();
 75   };
 76 
 77   class G1PrepareCompactLiveClosure : public StackObj {
 78     G1FullGCCompactionPoint* _cp;

 79 
 80   public:
 81     G1PrepareCompactLiveClosure(G1FullGCCompactionPoint* cp);
 82     size_t apply(oop object);
 83   };
 84 
 85   class G1RePrepareClosure : public StackObj {
 86     G1FullGCCompactionPoint* _cp;
 87     HeapRegion* _current;

 88 
 89   public:
 90     G1RePrepareClosure(G1FullGCCompactionPoint* hrcp,
 91                        HeapRegion* hr) :
 92         _cp(hrcp),
 93         _current(hr) { }

 94 
 95     size_t apply(oop object);
 96   };
 97 };
 98 
 99 #endif // SHARE_GC_G1_G1FULLGCPREPARETASK_HPP

 17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 18  *
 19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 20  * or visit www.oracle.com if you need additional information or have any
 21  * questions.
 22  *
 23  */
 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/heapRegionManager.hpp"
 33 #include "gc/shared/referenceProcessor.hpp"
 34 
 35 class G1CMBitMap;
 36 class G1FullCollector;
 37 class SlidingForwarding;
 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   private:
 55     template<bool is_humongous>
 56     void free_pinned_region(HeapRegion* hr);
 57   protected:

 60     G1CMBitMap* _bitmap;
 61     G1FullGCCompactionPoint* _cp;
 62     bool _regions_freed;
 63 
 64     bool should_compact(HeapRegion* hr);
 65     void prepare_for_compaction(HeapRegion* hr);
 66     void prepare_for_compaction_work(G1FullGCCompactionPoint* cp, HeapRegion* hr);
 67 
 68     void reset_region_metadata(HeapRegion* hr);
 69 
 70   public:
 71     G1CalculatePointersClosure(G1FullCollector* collector,
 72                                G1FullGCCompactionPoint* cp);
 73 
 74     bool do_heap_region(HeapRegion* hr);
 75     bool freed_regions();
 76   };
 77 
 78   class G1PrepareCompactLiveClosure : public StackObj {
 79     G1FullGCCompactionPoint* _cp;
 80     SlidingForwarding* const _forwarding;
 81 
 82   public:
 83     G1PrepareCompactLiveClosure(G1FullGCCompactionPoint* cp);
 84     size_t apply(oop object);
 85   };
 86 
 87   class G1RePrepareClosure : public StackObj {
 88     G1FullGCCompactionPoint* _cp;
 89     HeapRegion* _current;
 90     SlidingForwarding* const _forwarding;
 91 
 92   public:
 93     G1RePrepareClosure(G1FullGCCompactionPoint* hrcp,
 94                        HeapRegion* hr) :
 95         _cp(hrcp),
 96         _current(hr),
 97         _forwarding(G1CollectedHeap::heap()->forwarding()) { }
 98 
 99     size_t apply(oop object);
100   };
101 };
102 
103 #endif // SHARE_GC_G1_G1FULLGCPREPARETASK_HPP
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