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/*
* Copyright (c) 2016, 2023, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test LoaderConstraintsTest
* @bug 8149996
* @requires vm.flagless
* @modules java.base/jdk.internal.misc
* @library /test/lib classes
* @build test.Empty
* @build jdk.test.whitebox.WhiteBox
* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
* @run driver LoaderConstraintsTest
*/
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;
import java.lang.ref.WeakReference;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import jdk.test.lib.classloader.ClassUnloadCommon;
public class LoaderConstraintsTest {
private static OutputAnalyzer out;
private static ProcessBuilder pb;
private static class ClassUnloadTestMain {
public static void main(String... args) throws Exception {
String className = "test.Empty";
ClassLoader cl = ClassUnloadCommon.newClassLoader();
Class<?> c = cl.loadClass(className);
cl = null; c = null;
ClassUnloadCommon.triggerUnloading();
}
}
// Use the same command-line heap size setting as ../ClassUnload/UnloadTest.java
static ProcessBuilder exec(String... args) throws Exception {
List<String> argsList = new ArrayList<>();
Collections.addAll(argsList, args);
Collections.addAll(argsList, "-Xmn8m");
Collections.addAll(argsList, "-Xbootclasspath/a:.");
Collections.addAll(argsList, "-XX:+UnlockDiagnosticVMOptions");
Collections.addAll(argsList, "-XX:+WhiteBoxAPI");
Collections.addAll(argsList, ClassUnloadTestMain.class.getName());
return ProcessTools.createLimitedTestJavaProcessBuilder(argsList);
}
public static void main(String... args) throws Exception {
// -Xlog:class+loader+constraints=info
pb = exec("-Xlog:class+loader+constraints=info");
out = new OutputAnalyzer(pb.start());
out.shouldHaveExitValue(0);
out.shouldContain("[class,loader,constraints] adding new constraint for name: java/lang/Class, loader[0]: 'app', loader[1]: 'bootstrap'");
// -Xlog:class+loader+constraints=off
pb = exec("-Xlog:class+loader+constraints=off");
out = new OutputAnalyzer(pb.start());
out.shouldHaveExitValue(0);
out.shouldNotContain("[class,loader,constraints]");
}
}
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