107 lines
3.6 KiB
Java
107 lines
3.6 KiB
Java
/*
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* Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
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* Copyright (c) 2024, Alibaba Group Holding Limited. 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 8339725
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* @summary Stress test GetMethodDeclaringClass
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* @requires vm.jvmti
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* @requires (os.family == "linux")
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* @library /test/lib
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* @run driver/timeout=300 TestUnloadedClass
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*/
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.Utils;
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import jdk.test.lib.process.ProcessTools;
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import jdk.test.lib.Platform;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.InputStream;
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import java.lang.reflect.Constructor;
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public class TestUnloadedClass {
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public static void main(String[] args) throws Exception {
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ProcessBuilder pb = ProcessTools.createTestJavaProcessBuilder(
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"-agentpath:" + Utils.TEST_NATIVE_PATH + File.separator + System.mapLibraryName("TestUnloadedClass"),
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"-Xmx50m",
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"Test");
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OutputAnalyzer output = new OutputAnalyzer(pb.start());
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if (!Platform.isDebugBuild()) {
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output.shouldContain("OutOfMemoryError");
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}
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}
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}
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class Test {
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public static void main(String[] args) throws Exception {
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long last = System.nanoTime();
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for (int i = 0;;i++) {
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if (Platform.isDebugBuild() && i >= 1000) {
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// Debug build costs too much time to OOM so limit the loop iteration
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break;
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}
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CustomClassLoader loader = new CustomClassLoader();
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Class<?> k = loader.findClass("MyClass");
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Constructor<?> c = k.getDeclaredConstructor();
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c.setAccessible(true);
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c.newInstance();
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// call gc every ~1 second.
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if ((System.nanoTime() - last) >= 1e9) {
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System.gc();
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last = System.nanoTime();
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}
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}
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}
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}
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class CustomClassLoader extends ClassLoader {
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static byte[] BYTES;
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static {
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try (InputStream in = CustomClassLoader.class.getResourceAsStream("MyClass.class")) {
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try (ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
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byte[] buf = new byte[4096];
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int len;
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while ((len = in.read(buf)) != -1) {
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baos.write(buf, 0, len);
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}
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BYTES = baos.toByteArray();
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}
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} catch (Throwable t) {
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throw new RuntimeException(t);
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}
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}
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@Override
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public Class findClass(String name) throws ClassNotFoundException {
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return defineClass(name, BYTES, 0, BYTES.length);
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}
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}
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class MyClass {
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}
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