91 lines
3.7 KiB
Java
91 lines
3.7 KiB
Java
/*
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* Copyright (c) 2016, 2025, 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 LoaderConstraintsTest
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* @bug 8149996
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* @requires vm.flagless
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* @modules java.base/jdk.internal.misc
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* @library /test/lib classes
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* @build test.Empty
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* @build jdk.test.whitebox.WhiteBox
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* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
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* @run driver LoaderConstraintsTest
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*/
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import jdk.test.lib.process.ProcessTools;
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import jdk.test.lib.process.OutputAnalyzer;
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import java.lang.ref.WeakReference;
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import java.lang.reflect.Method;
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import java.lang.reflect.Constructor;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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import jdk.test.lib.classloader.ClassUnloadCommon;
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public class LoaderConstraintsTest {
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private static OutputAnalyzer out;
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private static ProcessBuilder pb;
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private static class ClassUnloadTestMain {
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public static void main(String... args) throws Exception {
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ClassLoader cl = ClassUnloadCommon.newClassLoader();
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Class<?> c = cl.loadClass("test.Empty");
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// Causes class test.Empty to be linked, which triggers the
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// constraint on class String due to override of toString().
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Constructor<?> constructor = c.getDeclaredConstructor();
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}
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}
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// Use the same command-line heap size setting as ../ClassUnload/UnloadTest.java
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static ProcessBuilder exec(String... args) throws Exception {
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String classPath = System.getProperty("test.class.path", ".");
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List<String> argsList = new ArrayList<>();
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Collections.addAll(argsList, args);
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Collections.addAll(argsList, "-Xmn8m");
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Collections.addAll(argsList, "-Xbootclasspath/a:.");
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Collections.addAll(argsList, "-XX:+UnlockDiagnosticVMOptions");
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Collections.addAll(argsList, "-XX:+WhiteBoxAPI");
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Collections.addAll(argsList, "-Dtest.class.path=" + classPath);
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Collections.addAll(argsList, ClassUnloadTestMain.class.getName());
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return ProcessTools.createLimitedTestJavaProcessBuilder(argsList);
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}
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public static void main(String... args) throws Exception {
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// -Xlog:class+loader+constraints=info
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pb = exec("-Xlog:class+loader+constraints=info");
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out = new OutputAnalyzer(pb.start());
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out.shouldHaveExitValue(0);
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out.stdoutShouldMatch("\\[class,loader,constraints\\] adding new constraint for name: java/lang/String, loader\\[0\\]: 'ClassUnloadCommonClassLoader' @[\\da-f]+, loader\\[1\\]: 'bootstrap'");
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// -Xlog:class+loader+constraints=off
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pb = exec("-Xlog:class+loader+constraints=off");
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out = new OutputAnalyzer(pb.start());
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out.shouldHaveExitValue(0);
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out.shouldNotContain("[class,loader,constraints]");
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}
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}
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