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