| /* |
| * Copyright (c) 2017, 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. |
| */ |
| |
| import java.lang.instrument.Instrumentation; |
| |
| public class Main { |
| public static void main(String[] args) throws Exception { |
| Instrumentation inst = Agent.inst; |
| if (inst == null) |
| throw new RuntimeException("Agent not loaded"); |
| |
| // check boot class path has been extended |
| Class<?> helper = Class.forName("AgentHelper"); |
| if (helper.getClassLoader() != null) |
| throw new RuntimeException("AgentHelper not loaded by boot loader"); |
| |
| // check Instrumentation object can be used |
| Class<?>[] classes = inst.getAllLoadedClasses(); |
| System.out.println(classes.length + " classes loaded"); |
| } |
| } |