/*

 * Copyright (c) 2017, 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

 * questions.

 */

#ifndef SHARE_GC_Z_ZRELOCATIONSET_INLINE_HPP

#define SHARE_GC_Z_ZRELOCATIONSET_INLINE_HPP

#include "gc/z/zRelocationSet.hpp"

#include "runtime/atomic.hpp"

template <bool parallel>

inline ZRelocationSetIteratorImpl<parallel>::ZRelocationSetIteratorImpl(ZRelocationSet* relocation_set) :

    _relocation_set(relocation_set),

    _next(0) {}

template <bool parallel>

inline bool ZRelocationSetIteratorImpl<parallel>::next(ZPage** page) {

  const size_t npages = _relocation_set->_npages;

  if (parallel) {

    if (_next < npages) {

      const size_t next = Atomic::add(1u, &_next) - 1u;

      if (next < npages) {

        *page = _relocation_set->_pages[next];

        return true;

      }

    }

  } else {

    if (_next < npages) {

      *page = _relocation_set->_pages[_next++];

      return true;

    }

  }

  return false;

}

#endif // SHARE_GC_Z_ZRELOCATIONSET_INLINE_HPP