87 lines
3.4 KiB
Java
87 lines
3.4 KiB
Java
/*
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* Copyright (c) 2007, 2018, 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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package nsk.jvmti.AttachOnDemand.attach030;
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import nsk.share.TestBug;
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import nsk.share.aod.AbstractJarAgent;
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import java.lang.instrument.Instrumentation;
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/*
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* First agent tries to redefine class loaded by the target application, then agent itself loads
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* class and redefines it
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*/
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public class attach030Agent00 extends AbstractJarAgent {
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private static final String classToRedefine1 = "nsk.jvmti.AttachOnDemand.attach030.ClassToRedefine01";
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private static final String classToRedefine2 = "nsk.jvmti.AttachOnDemand.attach030.ClassToRedefine02";
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protected void init(String[] args) {
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if (pathToNewByteCode() == null)
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throw new TestBug("Path to new byte code wasn't specified (" + pathToNewByteCodeOption + "=...)");
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}
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protected void agentActions() throws Throwable {
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boolean classWasFound = false;
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for (Class<?> klass : inst.getAllLoadedClasses()) {
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/*
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* When agent is running class 'classToRedefine1' should be
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* already loaded by the target application
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*/
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if (klass.getName().equals(classToRedefine1)) {
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classWasFound = true;
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display("Trying to redefine class '" + classToRedefine1 + "'");
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redefineClass(klass);
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display("Class was redefined");
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break;
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}
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}
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if (!classWasFound) {
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setStatusFailed("Instrumentation.getAllLoadedClasses() didn't return class '" + classToRedefine1 + "'");
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}
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/*
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* Try to load and redefine 'classToRedefine2'
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*/
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Class<?> klass = Class.forName(classToRedefine2);
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display("Trying to redefine class '" + classToRedefine2 + "'");
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redefineClass(klass);
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display("Class was redefined");
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final String expectedString = "ClassToRedefine02: Class is redefined";
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ClassToRedefine02 instance = new ClassToRedefine02();
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String string = instance.getString();
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display("ClassToRedefine02.getString(): " + string);
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if (!string.equals(expectedString)) {
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setStatusFailed("ClassToRedefine02.getString() returned unexpected value , expected is '" + expectedString + "'");
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}
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}
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public static void agentmain(String options, Instrumentation inst) {
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new attach030Agent00().runJarAgent(options, inst);
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}
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}
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