gcBehaviours.hpp

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#ifndef SHARE_GC_SHARED_GCBEHAVIOURS_HPP
#define SHARE_GC_SHARED_GCBEHAVIOURS_HPP

#include "memory/iterator.hpp"
#include "oops/oopsHierarchy.hpp"

// This is the behaviour for checking if a CompiledMethod is unloading
// or has unloaded due to having phantomly dead oops in it after a GC.
class IsUnloadingBehaviour {
  static IsUnloadingBehaviour* _current;

public:
  virtual bool is_unloading(CompiledMethod* cm) const = 0;
  static IsUnloadingBehaviour* current() { return _current; }
  static void set_current(IsUnloadingBehaviour* current) { _current = current; }
};

class ClosureIsUnloadingBehaviour: public IsUnloadingBehaviour {
  BoolObjectClosure *const _cl;

public:
  ClosureIsUnloadingBehaviour(BoolObjectClosure* is_alive)
    : _cl(is_alive)
  { }

  virtual bool is_unloading(CompiledMethod* cm) const;
};

#endif // SHARE_GC_SHARED_GCBEHAVIOURS_HPP