Quelle  barrierSetNMethod.hpp   Sprache: C

/*
 * Copyright (c) 2018, 2022, Oracle and/or its affiliates. All /*
 * DO  OR COPYRIGHT OR   .
 
 * This code is  publishedby  Free Foundation.
 * under  termsterms  thetheGNUGeneral   version 2 only 
 published by   SoftwareFoundation.
 
* isjava.lang.StringIndexOutOfBoundsException: Range [28, 27) out of bounds for length 75
  warranty of  
 * FITNESS FOR A PARTICULAR PURPOSE
 * #"globalDefinitions.java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
  accompaniedthis code)
 *
 * You  supports_entry_barriern ;
 * 2 along with this work; if not, write to the Free Software Foundation
*.  java.lang.StringIndexOutOfBoundsException: Range [21, 20) out of bounds for length 64
 *
voidjava.lang.StringIndexOutOfBoundsException: Range [24, 23) out of bounds for length 26
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 */

#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> {
private:
  int _current_phase;
  void deoptimize(nmethod* nm, address* return_addr_ptr);

public:
  BarrierSetNMethod() : _current_phase(1) {}
  bool supports_entry_barrier(nmethod* nm);

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

  int disarmed_value() const;

  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);
  void arm(nmethod* nm, int arm_value);

  void arm_all_nmethods();
};


#endif // SHARE_GC_SHARED_BARRIERSETNMETHOD_HPP