bc215804a4
Improve the fragmentation error message. Set java heap size in LotsOfClasses.java. Reviewed-by: iklam, ccheung
96 lines
3.4 KiB
Java
96 lines
3.4 KiB
Java
/*
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* Copyright (c) 2018, 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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import java.net.URI;
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import java.nio.file.DirectoryStream;
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import java.nio.file.Files;
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import java.nio.file.FileSystem;
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import java.nio.file.FileSystems;
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import java.nio.file.Path;
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import java.util.ArrayList;
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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.cds.CDSOptions;
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import jdk.test.lib.process.OutputAnalyzer;
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/*
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* @test
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* @summary Try to archive lots of classes by searching for classes from the jrt:/ file system. With JDK 12
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* this will produce an archive with over 30,000 classes.
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* @requires vm.cds
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* @library /test/lib
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* @run driver/timeout=500 LotsOfClasses
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*/
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public class LotsOfClasses {
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static Pattern pattern;
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public static void main(String[] args) throws Throwable {
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ArrayList<String> list = new ArrayList<>();
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findAllClasses(list);
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CDSOptions opts = new CDSOptions();
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opts.setClassList(list);
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opts.addSuffix("--add-modules");
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opts.addSuffix("ALL-SYSTEM");
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opts.addSuffix("-Xlog:hashtables");
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opts.addSuffix("-Xms500m");
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opts.addSuffix("-Xmx500m");
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OutputAnalyzer out = CDSTestUtils.createArchive(opts);
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try {
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CDSTestUtils.checkDump(out);
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} catch (java.lang.RuntimeException re) {
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out.shouldContain(
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"number of memory regions exceeds maximum due to fragmentation");
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}
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}
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static void findAllClasses(ArrayList<String> list) throws Throwable {
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// Find all the classes in the jrt file system
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pattern = Pattern.compile("/modules/[a-z.]*[a-z]+/([^-]*)[.]class");
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FileSystem fs = FileSystems.getFileSystem(URI.create("jrt:/"));
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Path base = fs.getPath("/modules/");
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find(base, list);
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}
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static void find(Path p, ArrayList<String> list) throws Throwable {
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try (DirectoryStream<Path> stream = Files.newDirectoryStream(p)) {
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for (Path entry: stream) {
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Matcher matcher = pattern.matcher(entry.toString());
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if (matcher.find()) {
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String className = matcher.group(1);
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list.add(className);
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//System.out.println(className);
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}
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try {
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find(entry, list);
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} catch (Throwable t) {}
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}
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}
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}
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}
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