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src/share/vm/gc/g1/g1MarkSweep.hpp

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rev 13070 : imported patch 8177544-full-gc-scope


  35 #include "runtime/timer.hpp"
  36 #include "utilities/growableArray.hpp"
  37 
  38 class ReferenceProcessor;
  39 
  40 // G1MarkSweep takes care of global mark-compact garbage collection for a
  41 // G1CollectedHeap using a four-phase pointer forwarding algorithm.  All
  42 // generations are assumed to support marking; those that can also support
  43 // compaction.
  44 //
  45 // Class unloading will only occur when a full gc is invoked.
  46 class G1PrepareCompactClosure;
  47 class G1ArchiveRegionMap;
  48 
  49 class G1MarkSweep : AllStatic {
  50  public:
  51 
  52   static void invoke_at_safepoint(ReferenceProcessor* rp,
  53                                   bool clear_all_softrefs);
  54 
  55   static STWGCTimer* gc_timer() { return GenMarkSweep::_gc_timer; }
  56   static SerialOldTracer* gc_tracer() { return GenMarkSweep::_gc_tracer; }
  57 
  58 private:
  59   // Mark live objects
  60   static void mark_sweep_phase1(bool& marked_for_deopt,
  61                                 bool clear_all_softrefs);
  62   // Calculate new addresses
  63   static void mark_sweep_phase2();
  64   // Update pointers
  65   static void mark_sweep_phase3();
  66   // Move objects to new positions
  67   static void mark_sweep_phase4();
  68 
  69   static void allocate_stacks();
  70   static void prepare_compaction();
  71   static void prepare_compaction_work(G1PrepareCompactClosure* blk);
  72 };
  73 
  74 class G1PrepareCompactClosure : public HeapRegionClosure {
  75  protected:
  76   G1CollectedHeap* _g1h;


  35 #include "runtime/timer.hpp"
  36 #include "utilities/growableArray.hpp"
  37 
  38 class ReferenceProcessor;
  39 
  40 // G1MarkSweep takes care of global mark-compact garbage collection for a
  41 // G1CollectedHeap using a four-phase pointer forwarding algorithm.  All
  42 // generations are assumed to support marking; those that can also support
  43 // compaction.
  44 //
  45 // Class unloading will only occur when a full gc is invoked.
  46 class G1PrepareCompactClosure;
  47 class G1ArchiveRegionMap;
  48 
  49 class G1MarkSweep : AllStatic {
  50  public:
  51 
  52   static void invoke_at_safepoint(ReferenceProcessor* rp,
  53                                   bool clear_all_softrefs);
  54 
  55   static STWGCTimer* gc_timer();
  56   static SerialOldTracer* gc_tracer();
  57 
  58 private:
  59   // Mark live objects
  60   static void mark_sweep_phase1(bool& marked_for_deopt,
  61                                 bool clear_all_softrefs);
  62   // Calculate new addresses
  63   static void mark_sweep_phase2();
  64   // Update pointers
  65   static void mark_sweep_phase3();
  66   // Move objects to new positions
  67   static void mark_sweep_phase4();
  68 
  69   static void allocate_stacks();
  70   static void prepare_compaction();
  71   static void prepare_compaction_work(G1PrepareCompactClosure* blk);
  72 };
  73 
  74 class G1PrepareCompactClosure : public HeapRegionClosure {
  75  protected:
  76   G1CollectedHeap* _g1h;
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