1 /*
 2  * Copyright (c) 2014, 2021, 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  * @test
26  * @bug 8059510
27  * @summary Test SharedSymbolTableBucketSize option
28  * @requires vm.cds
29  * @library /test/lib
30  * @modules java.base/jdk.internal.misc
31  *          java.management
32  */
33 
34 import jdk.test.lib.cds.CDSTestUtils;
35 import jdk.test.lib.process.OutputAnalyzer;
36 
37 public class SharedSymbolTableBucketSize {
38     public static void main(String[] args) throws Exception {
39         int bucket_size = 8;
40 
41         OutputAnalyzer output =
42             CDSTestUtils.createArchiveAndCheck("-XX:SharedSymbolTableBucketSize="
43                                                + Integer.valueOf(bucket_size));
44         CDSTestUtils.checkMappingFailure(output);
45 
46         String regex = "Average bucket size     :     ([0-9]+\\.[0-9]+).*";
47         String s = output.firstMatch(regex, 1);
48         Float f = Float.parseFloat(s);
49         int size = Math.round(f);
50         if (size != bucket_size) {
51             throw new Exception("FAILED: incorrect bucket size " + size +
52                                 ", expect " + bucket_size);
53         }
54 
55         // Invalid SharedSymbolTableBucketSize input
56         String input[] = {"-XX:SharedSymbolTableBucketSize=-1",
57                           "-XX:SharedSymbolTableBucketSize=2.5"};
58         for (int i = 0; i < input.length; i++) {
59             CDSTestUtils.createArchive(input[i])
60                 .shouldContain("Improperly specified VM option")
61                 .shouldHaveExitValue(1);
62         }
63     }
64 }