1/*
2 * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24#ifndef SHARE_GC_Z_ZADDRESS_HPP
25#define SHARE_GC_Z_ZADDRESS_HPP
26
27#include "memory/allocation.hpp"
28
29class ZAddress : public AllStatic {
30 friend class ZAddressTest;
31
32private:
33 static void set_good_mask(uintptr_t mask);
34
35public:
36 static void initialize();
37
38 static void flip_to_marked();
39 static void flip_to_remapped();
40
41 static bool is_null(uintptr_t value);
42 static bool is_bad(uintptr_t value);
43 static bool is_good(uintptr_t value);
44 static bool is_good_or_null(uintptr_t value);
45 static bool is_weak_bad(uintptr_t value);
46 static bool is_weak_good(uintptr_t value);
47 static bool is_weak_good_or_null(uintptr_t value);
48 static bool is_marked(uintptr_t value);
49 static bool is_finalizable(uintptr_t value);
50 static bool is_finalizable_good(uintptr_t value);
51 static bool is_remapped(uintptr_t value);
52 static bool is_in(uintptr_t value);
53
54 static uintptr_t address(uintptr_t value);
55 static uintptr_t offset(uintptr_t value);
56 static uintptr_t good(uintptr_t value);
57 static uintptr_t good_or_null(uintptr_t value);
58 static uintptr_t finalizable_good(uintptr_t value);
59 static uintptr_t marked(uintptr_t value);
60 static uintptr_t marked0(uintptr_t value);
61 static uintptr_t marked1(uintptr_t value);
62 static uintptr_t remapped(uintptr_t value);
63 static uintptr_t remapped_or_null(uintptr_t value);
64};
65
66#endif // SHARE_GC_Z_ZADDRESS_HPP
67