/*

 * Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved.

 *

 * 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

 * questions.

 *

 */

#ifndef SHARE_VM_GC_EPSILON_BARRIERSET_HPP

#define SHARE_VM_GC_EPSILON_BARRIERSET_HPP

#include "gc/shared/barrierSetAssembler.hpp"

#include "gc/shared/barrierSet.hpp"

// No interaction with application is required for Epsilon, and therefore

// the barrier set is empty.

class EpsilonBarrierSet: public BarrierSet {

  friend class VMStructs;

public:

  EpsilonBarrierSet();

  virtual void print_on(outputStream *st) const {}

  virtual void on_thread_create(Thread* thread);

  virtual void on_thread_destroy(Thread* thread);

  template <DecoratorSet decorators, typename BarrierSetT = EpsilonBarrierSet>

  class AccessBarrier: public BarrierSet::AccessBarrier<decorators, BarrierSetT> {};

};

template<>

struct BarrierSet::GetName<EpsilonBarrierSet> {

  static const BarrierSet::Name value = BarrierSet::EpsilonBarrierSet;

};

template<>

struct BarrierSet::GetType<BarrierSet::EpsilonBarrierSet> {

  typedef ::EpsilonBarrierSet type;

};

#endif // SHARE_VM_GC_EPSILON_BARRIERSET_HPP