/*

 * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

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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> {

  bool supports_entry_barrier(nmethod* nm);

  void deoptimize(nmethod* nm, address* return_addr_ptr);

protected:

  virtual bool nmethod_entry_barrier(nmethod* nm) = 0;

public:

  virtual ByteSize thread_disarmed_offset() 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