1 /*
2 * Copyright (c) 2026, 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
25 import java.util.Arrays;
26 import jdk.internal.value.ValueClass;
27
28 public class ArchivedFlatArrayApp {
29
30 // Check that arrays of both migrated value
31 // classes and custom value classes are archived
32 public static class ArchivedData {
33 Integer[] intArray;
34 CharPair[] charPairArray;
35 }
36
37 public static value class CharPair implements Comparable<CharPair> {
38 char c0, c1;
39
40 public String toString() {
41 return "(" + c0 + ", " + c1 + ")";
42 }
43
44 public int compareTo(CharPair o) {
45 return (c0 - o.c0) - (c1 - o.c1);
46 }
47
48 public CharPair(char c0, char c1) {
49 this.c0 = c0;
50 this.c1 = c1;
51 }
52 }
53
54 static ArchivedData archivedObjects;
55 static boolean restored;
56 static {
57 if (archivedObjects == null) {
58 restored = false;
59 System.out.println("Not archived");
60 archivedObjects = new ArchivedData();
61
62 archivedObjects.intArray = new Integer[3];
63 archivedObjects.intArray[0] = new Integer(0);
64 archivedObjects.intArray[1] = new Integer(1);
65 archivedObjects.intArray[2] = new Integer(2);
66
67 archivedObjects.charPairArray = new CharPair[3];
68 archivedObjects.charPairArray[0] = new CharPair('a', 'b');
69 archivedObjects.charPairArray[1] = new CharPair('c', 'd');
70 archivedObjects.charPairArray[2] = new CharPair('e', 'f');
71 } else {
72 restored = true;
73 System.out.println("Initialized from CDS");
74 System.out.println("intArray " + archivedObjects.intArray);
75 System.out.println("charPairArray " + archivedObjects.charPairArray);
76 }
77
78 for (Integer i : archivedObjects.intArray) {
79 System.out.println(i);
80 }
81
82 for (CharPair c : archivedObjects.charPairArray) {
83 System.out.println(c);
84 }
85 }
86
87 public static void main(String[] args) {
88 if (!ValueClass.isFlatArray(archivedObjects.intArray)) {
89 throw new RuntimeException("Integer array should be flat");
90 }
91
92 if (!ValueClass.isFlatArray(archivedObjects.intArray)) {
93 throw new RuntimeException("CharPair array should be flat");
94 }
95
96 if (restored) {
97 // Ensure archived arrays are restored properly
98 Integer[] runtimeIntArray = new Integer[3];
99 runtimeIntArray[0] = new Integer(0);
100 runtimeIntArray[1] = new Integer(1);
101 runtimeIntArray[2] = new Integer(2);
102
103 CharPair[] runtimeCharPairArray = new CharPair[3];
104 runtimeCharPairArray[0] = new CharPair('a', 'b');
105 runtimeCharPairArray[1] = new CharPair('c', 'd');
106 runtimeCharPairArray[2] = new CharPair('e', 'f');
107
108 if (Arrays.compare(archivedObjects.intArray, runtimeIntArray) != 0) {
109 throw new RuntimeException("Integer array not restored correctly");
110 }
111
112 if (Arrays.compare(archivedObjects.charPairArray, runtimeCharPairArray) != 0) {
113 throw new RuntimeException("CharPair array not restored correctly");
114 }
115 }
116 }
117 }