148 lines
5.4 KiB
Java
148 lines
5.4 KiB
Java
/*
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* Copyright (c) 2018, Red Hat, Inc. 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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/**
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* @test
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* @summary Test OOME in due to classloader leak
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* @requires vm.gc.Shenandoah
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* @library /test/lib
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* @run driver TestClassLoaderLeak
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*/
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import java.util.*;
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import java.io.*;
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import java.nio.*;
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import java.nio.file.*;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.process.ProcessTools;
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public class TestClassLoaderLeak {
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static final int SIZE = 1 * 1024 * 1024;
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static final int COUNT = 128;
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static volatile Object sink;
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static class Dummy {
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static final int[] PAYLOAD = new int[SIZE];
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}
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static class MyClassLoader extends ClassLoader {
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final String path;
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MyClassLoader(String path) {
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this.path = path;
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}
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public Class<?> loadClass(String name) throws ClassNotFoundException {
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try {
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File f = new File(path, name + ".class");
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if (!f.exists()) {
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return super.loadClass(name);
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}
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Path path = Paths.get(f.getAbsolutePath());
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byte[] cls = Files.readAllBytes(path);
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return defineClass(name, cls, 0, cls.length, null);
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} catch (IOException e) {
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throw new ClassNotFoundException(name);
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}
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}
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}
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static void load(String path) throws Exception {
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ClassLoader cl = new MyClassLoader(path);
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Class<Dummy> c = (Class<Dummy>) Class.forName("TestClassLoaderLeak$Dummy", true, cl);
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if (c.getClassLoader() != cl) {
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throw new IllegalStateException("Should have loaded by target loader");
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}
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sink = c;
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}
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public static void passWith(String... args) throws Exception {
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testWith(true, args);
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}
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public static void failWith(String... args) throws Exception {
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testWith(false, args);
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}
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public static void testWith(boolean shouldPass, String... args) throws Exception {
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List<String> pbArgs = new ArrayList<>();
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pbArgs.add("-Xmx128m");
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pbArgs.add("-XX:+UnlockExperimentalVMOptions");
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pbArgs.add("-XX:+UnlockDiagnosticVMOptions");
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pbArgs.add("-XX:+UseShenandoahGC");
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pbArgs.addAll(Arrays.asList(args));
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pbArgs.add(TestClassLoaderLeak.class.getName());
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pbArgs.add("test");
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OutputAnalyzer analyzer = ProcessTools.executeLimitedTestJava(pbArgs.toArray(new String[0]));
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if (shouldPass) {
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analyzer.shouldHaveExitValue(0);
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analyzer.shouldNotContain("java.lang.OutOfMemoryError");
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analyzer.shouldContain("All good");
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} else {
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analyzer.shouldHaveExitValue(1);
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analyzer.shouldContain("java.lang.OutOfMemoryError");
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analyzer.shouldNotContain("All good");
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}
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}
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public static void main(String[] args) throws Exception {
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if (args.length > 0) {
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String classDir = TestClassLoaderLeak.class.getProtectionDomain().getCodeSource().getLocation().getPath();
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for (int c = 0; c < COUNT; c++) {
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load(classDir);
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}
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System.out.println("All good");
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return;
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}
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String[][][] modeHeuristics = new String[][][] {
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{{"satb"}, {"adaptive", "compact", "static", "aggressive"}},
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{{"passive"}, {"passive"}}
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};
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for (String[][] mh : modeHeuristics) {
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String mode = mh[0][0];
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String[] heuristics = mh[1];
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for (String h : heuristics) {
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// Forceful enabling should work
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passWith("-XX:ShenandoahGCMode=" + mode, "-XX:ShenandoahGCHeuristics=" + h, "-XX:+ClassUnloading");
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passWith("-XX:ShenandoahGCMode=" + mode, "-XX:ShenandoahGCHeuristics=" + h, "-XX:+ClassUnloadingWithConcurrentMark");
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// Even when concurrent unloading is disabled, Full GC has to recover
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passWith("-XX:ShenandoahGCMode=" + mode, "-XX:ShenandoahGCHeuristics=" + h, "-XX:+ClassUnloading", "-XX:-ClassUnloadingWithConcurrentMark");
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// Should OOME when unloading forcefully disabled, even if local flags try to enable it back
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failWith("-XX:ShenandoahGCMode=" + mode, "-XX:ShenandoahGCHeuristics=" + h, "-XX:-ClassUnloading");
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failWith("-XX:ShenandoahGCMode=" + mode, "-XX:ShenandoahGCHeuristics=" + h, "-XX:-ClassUnloading", "-XX:+ClassUnloadingWithConcurrentMark");
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}
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}
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}
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}
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