author | chegar |
Thu, 17 Oct 2019 20:54:25 +0100 | |
branch | datagramsocketimpl-branch |
changeset 58679 | 9c3209ff7550 |
parent 58678 | 9cf78a70fa4f |
parent 55594 | 66a748c4f3ff |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2018, Red Hat, Inc. All rights reserved. |
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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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/** |
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* @test TestClassLoaderLeak |
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* @summary Test OOME in due to classloader leak |
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* @key gc |
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* @requires vm.gc.Shenandoah & !vm.graal.enabled |
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* @library /test/lib |
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* @run main 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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ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(pbArgs.toArray(new String[0])); |
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OutputAnalyzer analyzer = new OutputAnalyzer(pb.start()); |
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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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116 |
|
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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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126 |
|
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String[][][] modeHeuristics = new String[][][] { |
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{{"normal"}, {"adaptive", "compact", "static", "aggressive"}}, |
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{{"traversal"}, {"adaptive", "aggressive"}}, |
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{{"passive"}, {"passive"}} |
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}; |
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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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|
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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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passWith("-XX:ShenandoahGCMode=" + mode, "-XX:ShenandoahGCHeuristics=" + h, "-XX:+ClassUnloading", "-XX:-ClassUnloadingWithConcurrentMark", "-XX:ShenandoahUnloadClassesFrequency=0"); |
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passWith("-XX:ShenandoahGCMode=" + mode, "-XX:ShenandoahGCHeuristics=" + h, "-XX:+ClassUnloading", "-XX:+ClassUnloadingWithConcurrentMark", "-XX:ShenandoahUnloadClassesFrequency=0"); |
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|
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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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failWith("-XX:ShenandoahGCMode=" + mode, "-XX:ShenandoahGCHeuristics=" + h, "-XX:-ClassUnloading", "-XX:+ClassUnloadingWithConcurrentMark", "-XX:ShenandoahUnloadClassesFrequency=1"); |
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failWith("-XX:ShenandoahGCMode=" + mode, "-XX:ShenandoahGCHeuristics=" + h, "-XX:-ClassUnloading", "-XX:-ClassUnloadingWithConcurrentMark", "-XX:ShenandoahUnloadClassesFrequency=1"); |
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} |
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} |
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} |
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} |