/*

 * Copyright (c) 2015, 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

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 */

/**

 * @test

 * @bug 8046246

 * @summary Tests and benchmarks the JVMTI RedefineClasses when a

 *          single class (and its parent) contains many methods.

 *

 * @run build ManyMethodsBenchmarkApp ManyMethodsBenchmarkAgent

 * @run shell MakeJAR3.sh ManyMethodsBenchmarkAgent 'Can-Retransform-Classes: true'

 * @run main/othervm -javaagent:ManyMethodsBenchmarkAgent.jar ManyMethodsBenchmarkApp

 */

import java.lang.instrument.*;

public class ManyMethodsBenchmarkAgent

{

    public  static boolean fail = false;

    public  static boolean completed = false;

    private static  Instrumentation instrumentation;

    public static void

    premain(    String agentArgs,

                Instrumentation instrumentation) {

        System.out.println("ManyMethodsBenchmarkAgent started");

        ManyMethodsBenchmarkAgent.instrumentation = instrumentation;

        System.out.println("ManyMethodsBenchmarkAgent finished");

    }

    static void instr() {

        System.out.println("ManyMethodsBenchmarkAgent.instr started");

        Class[] allClasses = instrumentation.getAllLoadedClasses();

        for (int i = 0; i < allClasses.length; i++) {

            Class klass = allClasses[i];

            String name = klass.getName();

            if (!name.equals("Base")) {

                continue;

            }

            System.err.println("Instrumenting the class: " + klass);

            try {

                instrumentation.retransformClasses(klass);

            } catch (Throwable e) {

                System.err.println("Error: bad return from retransform: " + klass);

                System.err.println("  ERROR: " + e);

                fail = true;

            }

        }

        completed = true;

        System.out.println("ManyMethodsBenchmarkAgent.instr finished");

    }

}