src/hotspot/share/gc/x/xPageTable.inline.hpp

/*
 * Copyright (c) 2015, 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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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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#ifndef SHARE_GC_X_XPAGETABLE_INLINE_HPP
#define SHARE_GC_X_XPAGETABLE_INLINE_HPP

#include "gc/x/xPageTable.hpp"

#include "gc/x/xAddress.inline.hpp"
#include "gc/x/xGranuleMap.inline.hpp"

inline XPage* XPageTable::get(uintptr_t addr) const {
  assert(!XAddress::is_null(addr), "Invalid address");
  return _map.get(XAddress::offset(addr));
}

inline XPageTableIterator::XPageTableIterator(const XPageTable* page_table) :
    _iter(&page_table->_map),
    _prev(nullptr) {}

inline bool XPageTableIterator::next(XPage** page) {
  for (XPage* entry; _iter.next(&entry);) {
    if (entry != nullptr && entry != _prev) {
      // Next page found
      *page = _prev = entry;
      return true;
    }
  }

  // No more pages
  return false;
}

#endif // SHARE_GC_X_XPAGETABLE_INLINE_HPP