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103 lines
3.6 KiB
Java
103 lines
3.6 KiB
Java
/*
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* Copyright (c) 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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import com.sun.tools.attach.VirtualMachine;
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import com.sun.tools.attach.AgentLoadException;
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import org.junit.jupiter.api.Test;
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import org.junit.jupiter.api.BeforeAll;
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import org.junit.jupiter.api.AfterAll;
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import java.io.File;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.util.concurrent.TimeUnit;
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import jdk.test.lib.dcmd.PidJcmdExecutor;
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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.Utils;
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/*
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* @test EarlyDynamicLoad
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* @summary Test that dynamic attach fails gracefully when the JVM is not in live phase.
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* @requires vm.jvmti
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* @library /test/lib
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* @run junit EarlyDynamicLoad
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*/
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public class EarlyDynamicLoad {
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private static final String EXPECTED_MESSAGE = "Dynamic agent loading is only permitted in the live phase";
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private static Process child;
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@BeforeAll
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static void startAndWaitChild() throws Exception {
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child = ProcessTools.createTestJavaProcessBuilder(
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"-XX:+StartAttachListener",
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"-agentpath:" + Utils.TEST_NATIVE_PATH + File.separator + System.mapLibraryName("EarlyDynamicLoad"),
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"--version").start();
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// Wait until the process enters VMStartCallback
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try (InputStream is = child.getInputStream()) {
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is.read();
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}
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}
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@AfterAll
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static void stopChild() throws Exception {
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try (OutputStream os = child.getOutputStream()) {
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os.write(0);
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}
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if (!child.waitFor(5, TimeUnit.SECONDS)) {
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child.destroyForcibly();
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throw new AssertionError("Timed out while waiting child process to complete");
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}
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OutputAnalyzer analyzer = new OutputAnalyzer(child);
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analyzer.shouldHaveExitValue(0);
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}
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@Test
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public void virtualMachine() throws Exception {
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try {
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VirtualMachine vm = VirtualMachine.attach(String.valueOf(child.pid()));
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vm.loadAgent("some.jar");
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vm.detach();
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throw new AssertionError("Should have failed with AgentLoadException");
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} catch(AgentLoadException exception) {
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if (!exception.getMessage().contains(EXPECTED_MESSAGE)) {
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throw new AssertionError("Unexpected error message", exception);
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}
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}
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}
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@Test
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public void jcmd() throws Exception {
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PidJcmdExecutor executor = new PidJcmdExecutor(String.valueOf(child.pid()));
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OutputAnalyzer out = executor.execute("JVMTI.agent_load some.jar");
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out.shouldHaveExitValue(0);
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out.stdoutShouldContain(EXPECTED_MESSAGE);
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}
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}
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