1/*
2 * Copyright (c) 2013, 2015, 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
24import sun.hotspot.WhiteBox;
25
26// This class is used by the test SharedStrings.java
27// It should be launched in CDS mode
28public class SharedStringsWb {
29    public static void main(String[] args) throws Exception {
30        WhiteBox wb = WhiteBox.getWhiteBox();
31
32        if (wb.areSharedStringsIgnored()) {
33            System.out.println("Shared strings are ignored, assuming PASS");
34            return;
35        }
36
37        // The string below is known to be added to CDS archive
38        String s = "<init>";
39        String internedS = s.intern();
40
41        // Check that it's a valid string
42        if (s.getClass() != String.class || !(s instanceof String)) {
43            throw new RuntimeException("Shared string is not a valid String: FAIL");
44        }
45
46        if (wb.isShared(internedS)) {
47            System.out.println("Found shared string, result: PASS");
48        } else {
49            throw new RuntimeException("String is not shared, result: FAIL");
50        }
51    }
52}
53
54
55