barrierSetNMethod.hpp

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

#include "memory/allocation.hpp"
#include "utilities/globalDefinitions.hpp"
#include "utilities/sizes.hpp"

class nmethod;

class BarrierSetNMethod: public CHeapObj<mtGC> {
  void deoptimize(nmethod* nm, address* return_addr_ptr);
  int disarmed_value() const;

public:
  bool supports_entry_barrier(nmethod* nm);

  virtual bool nmethod_entry_barrier(nmethod* nm) = 0;
  virtual ByteSize thread_disarmed_offset() const = 0;
  virtual int* disarmed_value_address() const = 0;

  static int nmethod_stub_entry_barrier(address* return_address_ptr);
  bool nmethod_osr_entry_barrier(nmethod* nm);
  bool is_armed(nmethod* nm);
  void disarm(nmethod* nm);
};


#endif // SHARE_GC_SHARED_BARRIERSETNMETHOD_HPP