src/hotspot/share/gc/g1/g1RemSetTrackingPolicy.hpp

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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#ifndef SHARE_GC_G1_G1REMSETTRACKINGPOLICY_HPP
#define SHARE_GC_G1_G1REMSETTRACKINGPOLICY_HPP

#include "gc/g1/g1HeapRegion.hpp"
#include "gc/g1/g1HeapRegionType.hpp"
#include "memory/allocation.hpp"

// The remembered set tracking policy determines for a given region the state of
// the remembered set, ie. when it should be tracked, and if/when the remembered
// set is complete.
class G1RemSetTrackingPolicy : public CHeapObj<mtGC> {
public:
  // Update remembered set tracking state at allocation of the region. May be
  // called at any time. The caller makes sure that the changes to the remembered
  // set state are visible to other threads.
  void update_at_allocate(G1HeapRegion* r);
  // Update remembered set tracking state for humongous regions before we are going to
  // rebuild remembered sets. Called at safepoint in the remark pause.
  bool update_humongous_before_rebuild(G1HeapRegion* r);
  // Update remembered set tracking state for old regions before we are going
  // to rebuild remembered sets. Called at safepoint in the remark pause.
  bool update_old_before_rebuild(G1HeapRegion* r);
  // Update remembered set tracking state after rebuild is complete, i.e. the cleanup
  // pause. Called at safepoint.
  void update_after_rebuild(G1HeapRegion* r);
  // Update remembered set tracking state when the region is freed.
  void update_at_free(G1HeapRegion* r);
};

#endif // SHARE_GC_G1_G1REMSETTRACKINGPOLICY_HPP