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84 lines
3.4 KiB
Java
84 lines
3.4 KiB
Java
/*
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* Copyright (c) 2026, 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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/*
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* @test
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* @summary AOT training run should fail if critical classes have been redefined by JVMTI
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* @bug 8380409
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* @requires vm.cds.supports.aot.class.linking
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* @library /test/lib
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* @run driver RedefineClassHelper
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* @build RedefineCriticalClasses
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* @run driver jdk.test.lib.helpers.ClassFileInstaller -jar app.jar RedefineCriticalClassesApp
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* @run driver RedefineCriticalClasses
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*/
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import java.io.InputStream;
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import java.net.URL;
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import java.util.ArrayList;
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import jdk.test.lib.cds.CDSTestUtils;
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import jdk.test.lib.helpers.ClassFileInstaller;
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import jdk.test.lib.process.ProcessTools;
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public class RedefineCriticalClasses {
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public static void main(String... args) throws Exception {
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ArrayList<String> processArgs = new ArrayList<>();
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// redefineagent.jar is created by "@run driver RedefineClassHelper"
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processArgs.add("-javaagent:redefineagent.jar");
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processArgs.add("-XX:AOTMode=record");
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processArgs.add("-XX:AOTConfiguration=app.aotconfig");
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processArgs.add("-Xlog:aot,cds");
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processArgs.add("-cp");
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processArgs.add("app.jar");
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processArgs.add("RedefineCriticalClassesApp");
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ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(processArgs);
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CDSTestUtils.executeAndLog(pb, "train")
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.shouldContain("Redefined: class java.lang.Class")
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.shouldContain("Skipping java/lang/Class: Has been redefined")
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.shouldContain("Critical class java.lang.Class has been excluded. AOT configuration file cannot be written")
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.shouldHaveExitValue(1);
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}
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}
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class RedefineCriticalClassesApp {
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public static void main(String[] args) throws Exception {
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// Use RedefineClassHelper (loaded from redefineagent.jar into the boot class loader)
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// to redefine java/lang/Class, using the exact same bytecodes as from the JDK.
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// The JVM will mark it as having been redefined by JVMTI and will exclude it from the
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// AOT configuration file.
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URL url = new URL("jrt:/java.base/java/lang/Class.class");
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try (InputStream in = url.openConnection().getInputStream()) {
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byte[] b = in.readAllBytes();
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System.out.println("Length = " + b.length);
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RedefineClassHelper.redefineClass(Class.class, b);
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System.out.println("Redefined: " + Class.class);
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}
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}
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}
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