/*
 * 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");
    }
}