/*

 * Copyright (c) 2015, 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

 * questions.

 */

#ifndef SHARE_GC_Z_ZADDRESS_HPP

#define SHARE_GC_Z_ZADDRESS_HPP

#include "memory/allocation.hpp"

class ZAddress : public AllStatic {

public:

  static bool is_null(uintptr_t value);

  static bool is_bad(uintptr_t value);

  static bool is_good(uintptr_t value);

  static bool is_good_or_null(uintptr_t value);

  static bool is_weak_bad(uintptr_t value);

  static bool is_weak_good(uintptr_t value);

  static bool is_weak_good_or_null(uintptr_t value);

  static bool is_marked(uintptr_t value);

  static bool is_finalizable(uintptr_t value);

  static bool is_remapped(uintptr_t value);

  static uintptr_t address(uintptr_t value);

  static uintptr_t offset(uintptr_t value);

  static uintptr_t good(uintptr_t value);

  static uintptr_t good_or_null(uintptr_t value);

  static uintptr_t finalizable_good(uintptr_t value);

  static uintptr_t marked(uintptr_t value);

  static uintptr_t marked0(uintptr_t value);

  static uintptr_t marked1(uintptr_t value);

  static uintptr_t remapped(uintptr_t value);

  static uintptr_t remapped_or_null(uintptr_t value);

};

class ZAddressMasks : public AllStatic {

  friend class ZAddressTest;

private:

  static void set_good_mask(uintptr_t mask);

public:

  static void initialize();

  static void flip_to_marked();

  static void flip_to_remapped();

};

#endif // SHARE_GC_Z_ZADDRESS_HPP