115 lines
4.2 KiB
Java
115 lines
4.2 KiB
Java
/*
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* Copyright (c) 2005, 2024, 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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import java.io.PrintStream;
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import java.nio.file.Path;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.process.ProcessTools;
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import jdk.test.lib.helpers.ClassFileInstaller;
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/*
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* @test
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* @bug 6274264 6274241 5070281
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* @summary test retransformClasses
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*
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* @modules java.instrument
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* @library /test/lib
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* @build RetransformAgent asmlib.Instrumentor
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* @enablePreview
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* @comment The test uses asmlib/Instrumentor.java which relies on ClassFile API PreviewFeature.
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* @run driver/timeout=240 RetransformApp roleDriver
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* @comment The test uses a higher timeout to prevent test timeouts noted in JDK-6528548
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*/
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public class RetransformApp {
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public static void main(String[] args) throws Exception {
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if (args.length == 1) {
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if (!"roleDriver".equals(args[0])) {
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throw new Exception("unexpected program argument: " + args[0]);
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}
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// launch the RetransformApp java process after creating the necessary
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// infrastructure
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System.out.println("creating agent jar");
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final Path agentJar = createAgentJar();
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System.out.println("launching app, with javaagent jar: " + agentJar);
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launchApp(agentJar);
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} else {
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System.err.println("running app");
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new RetransformApp().run(System.out);
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}
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}
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private static Path createAgentJar() throws Exception {
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Path agentJar = Path.of("RetransformAgent.jar");
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final String manifest = """
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Manifest-Version: 1.0
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Premain-Class: RetransformAgent
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Can-Retransform-Classes: true
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""";
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System.out.println("Manifest is:\n" + manifest);
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ClassFileInstaller.writeJar(agentJar.getFileName().toString(),
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ClassFileInstaller.Manifest.fromString(manifest),
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"RetransformAgent",
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"asmlib.Instrumentor");
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return agentJar;
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}
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private static void launchApp(final Path agentJar) throws Exception {
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final OutputAnalyzer oa = ProcessTools.executeTestJava(
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"--enable-preview", // due to usage of ClassFile API PreviewFeature in the agent
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"-javaagent:" + agentJar.toString(),
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RetransformApp.class.getName());
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oa.shouldHaveExitValue(0);
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// make available stdout/stderr in the logs, even in case of successful completion
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oa.reportDiagnosticSummary();
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}
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int foo(int x) {
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return x * x;
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}
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public void run(PrintStream out) throws Exception {
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out.println("start");
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for (int i = 0; i < 4; i++) {
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if (foo(3) != 9) {
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throw new Exception("ERROR: unexpected application behavior");
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}
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}
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out.println("undo");
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RetransformAgent.undo();
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for (int i = 0; i < 4; i++) {
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if (foo(3) != 9) {
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throw new Exception("ERROR: unexpected application behavior");
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}
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}
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out.println("end");
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if (RetransformAgent.succeeded()) {
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out.println("Instrumentation succeeded.");
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} else {
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throw new Exception("ERROR: Instrumentation failed.");
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}
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}
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}
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