/*
 * Copyright (c) 2018, 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.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
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 */

#ifndef SHARE_GC_Z_ZNMETHODBARRIER_HPP
#define SHARE_GC_Z_ZNMETHODBARRIER_HPP

#include "code/nmethodBarrier.hpp"
#include "memory/allocation.hpp"

class nmethod;

class ZNMethodBarrier: AllStatic {

  static void load_barrier(nmethod* nm);

  static bool nmethod_barrier(nmethod* nm, nmethodBarrier* nmbarrier);
  static bool osr_nmethod_barrier(nmethod* nm);

  static bool enter(nmethod* nm, nmethodBarrier* barrier);
  static void leave(nmethod* nm, nmethodBarrier* barrier);

public:
  static void cleanup_nmethod(nmethod* nm, bool unloading_occrred);
  static void cleanup_nmethod_caches(nmethod* nm, bool unloading_occurred) {
    if (enter(nm, NULL)) {
      cleanup_nmethod(nm, unloading_occurred);
      leave(nm, NULL);
    }
  }
  static bool phantom_load(nmethod* nm, nmethodBarrier* barrier);
  static bool on_nmethod_entry_barrier(nmethod* nm, nmethodBarrier* nmbarrier);
};

#endif // SHARE_Z_ZNMETHODBARRIER_HPP