1/*
2 * Copyright (c) 2014, 2017, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 * This code is free software; you can redistribute it and/or modify it
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7 * published by the Free Software Foundation.
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 * accompanied this code).
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22 */
23
24/**
25 * @test
26 * @requires vm.cds
27 * @bug 8059510
28 * @summary Test SharedSymbolTableBucketSize option
29 * @requires (vm.opt.UseCompressedOops == null) | (vm.opt.UseCompressedOops == true)
30 * @library /test/lib
31 * @modules java.base/jdk.internal.misc
32 *          java.management
33 */
34
35import jdk.test.lib.cds.CDSTestUtils;
36import jdk.test.lib.process.OutputAnalyzer;
37
38public class SharedSymbolTableBucketSize {
39    public static void main(String[] args) throws Exception {
40        int bucket_size = 8;
41
42        OutputAnalyzer output =
43            CDSTestUtils.createArchive("-XX:SharedSymbolTableBucketSize="
44                                       + Integer.valueOf(bucket_size));
45        CDSTestUtils.checkDump(output);
46
47        if (!CDSTestUtils.isUnableToMap(output)) {
48            String s = output.firstMatch("Average bucket size     : .*");
49            Float f = Float.parseFloat(s.substring(25));
50            int size = Math.round(f);
51            if (size != bucket_size) {
52                throw new Exception("FAILED: incorrect bucket size " + size +
53                                    ", expect " + bucket_size);
54            }
55        }
56
57        // Invalid SharedSymbolTableBucketSize input
58        String input[] = {"-XX:SharedSymbolTableBucketSize=-1",
59                          "-XX:SharedSymbolTableBucketSize=2.5"};
60        for (int i = 0; i < input.length; i++) {
61            CDSTestUtils.createArchive(input[i])
62                .shouldContain("Improperly specified VM option")
63                .shouldHaveExitValue(1);
64        }
65    }
66}
67