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103 lines
4.3 KiB
Java
103 lines
4.3 KiB
Java
/*
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* Copyright (c) 2014, 2025, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 8059510
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* @summary Test SharedSymbolTableBucketSize option
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* @requires vm.cds
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* @library /test/lib
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* @modules java.base/jdk.internal.misc
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* java.management
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*/
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import jdk.test.lib.cds.CDSTestUtils;
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import jdk.test.lib.process.OutputAnalyzer;
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public class SharedSymbolTableBucketSize {
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public static void main(String[] args) throws Exception {
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int bucket_size = 8;
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OutputAnalyzer output =
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CDSTestUtils.createArchiveAndCheck("-XX:SharedSymbolTableBucketSize="
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+ Integer.valueOf(bucket_size));
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CDSTestUtils.checkMappingFailure(output);
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/* [1] There may be other table stats that precede the symbol tabble.
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Skip all thse until we find this:
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[0.677s][info][aot,hashtables] Shared symbol table stats -------- base: 0x0000000800000000
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[0.677s][info][aot,hashtables] Number of entries : 46244
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[0.677s][info][aot,hashtables] Total bytes used : 393792
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[0.677s][info][aot,hashtables] Average bytes per entry : 8.516
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[0.677s][info][aot,hashtables] Average bucket size : 7.734
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[0.677s][info][aot,hashtables] Variance of bucket size : 7.513
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[0.677s][info][aot,hashtables] Std. dev. of bucket size: 2.741
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[0.677s][info][aot,hashtables] Maximum bucket size : 20
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[0.677s][info][aot,hashtables] Empty buckets : 2
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[0.677s][info][aot,hashtables] Value_Only buckets : 24
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[0.677s][info][aot,hashtables] Other buckets : 5953
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....
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*/
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Pattern pattern0 = Pattern.compile("Shared symbol table stats.*", Pattern.DOTALL);
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Matcher matcher0 = pattern0.matcher(output.getStdout());
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String stat = null;
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if (matcher0.find()) {
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stat = matcher0.group(0);
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}
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if (stat == null) {
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throw new Exception("FAILED: pattern \"" + pattern0 + "\" not found");
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}
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/* (2) The first "Average bucket size" line in the remaining output is for the
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shared symbol table */
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Pattern pattern = Pattern.compile("Average bucket size *: *([0-9]+\\.[0-9]+).*", Pattern.MULTILINE);
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Matcher matcher = pattern.matcher(stat);
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String s = null;
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if (matcher.find()) {
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s = matcher.group(1);
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}
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if (s == null) {
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throw new Exception("FAILED: pattern \"" + pattern + "\" not found");
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}
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Float f = Float.parseFloat(s);
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int size = Math.round(f);
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if (size != bucket_size) {
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throw new Exception("FAILED: incorrect bucket size " + size +
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", expect " + bucket_size);
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}
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// Invalid SharedSymbolTableBucketSize input
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String input[] = {"-XX:SharedSymbolTableBucketSize=-1",
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"-XX:SharedSymbolTableBucketSize=2.5"};
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for (int i = 0; i < input.length; i++) {
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CDSTestUtils.createArchive(input[i])
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.shouldContain("Improperly specified VM option")
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.shouldHaveExitValue(1);
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}
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}
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}
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