72 lines
2.7 KiB
Java
72 lines
2.7 KiB
Java
/*
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* Copyright (c) 2016, 2022, 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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* @summary Ensure module information is cleaned when owning class loader unloads
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* @requires vm.opt.final.ClassUnloading
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* @modules java.base/jdk.internal.misc
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* @library /test/lib ..
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* @build jdk.test.whitebox.WhiteBox
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* @compile/module=java.base java/lang/ModuleHelper.java
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* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
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* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xms64m -Xmx64m LoadUnloadModuleStress 15000
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*/
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import java.lang.ref.WeakReference;
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import static jdk.test.lib.Asserts.*;
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public class LoadUnloadModuleStress {
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private static long timeout;
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private static long timeStamp;
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public static byte[] garbage;
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public static volatile WeakReference<MyClassLoader> clweak;
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public static Object createModule() throws Throwable {
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MyClassLoader cl = new MyClassLoader();
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Object module = ModuleHelper.ModuleObject("mymodule", cl, new String [] {"PackageA"});
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assertNotNull(module);
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ModuleHelper.DefineModule(module, false, "9.0", "mymodule", new String[] { "PackageA" });
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clweak = new WeakReference<>(cl);
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return module;
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}
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public static void main(String args[]) throws Throwable {
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timeout = Long.valueOf(args[0]);
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timeStamp = System.currentTimeMillis();
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while(System.currentTimeMillis() - timeStamp < timeout) {
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WeakReference<Object> modweak = new WeakReference<>(createModule());
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while(clweak.get() != null) {
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garbage = new byte[8192];
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System.gc();
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}
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assertNull(modweak.get());
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}
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}
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static class MyClassLoader extends ClassLoader { }
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}
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