/*

 * Copyright (c) 2014, 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.io.*;

import java.lang.instrument.*;

public class RedefineMethodDelInvokeApp {

    public static void main(String args[]) {

        System.out.println("Hello from RedefineMethodDelInvokeApp!");

        try {

            new RedefineMethodDelInvokeApp().doTest();

        } catch (Exception ex) {

            System.out.println("Exception has been caught");

            ex.printStackTrace();

            System.exit(1);

        }

        System.exit(0);

    }

    private void doTest() throws Exception {

        RedefineMethodDelInvokeTarget target =

            new RedefineMethodDelInvokeTarget();

        System.out.println("RedefineMethodDelInvokeApp: invoking myMethod0(), myMethod1(), myMethod2()");

        target.test();

        // delete myMethod2()

        do_redefine(1);

        System.out.println("RedefineMethodDelInvokeApp: invoking myMethod0(), myMethod1()");

        target.test();

        // delete myMethod1()

        do_redefine(2);

        System.out.println("RedefineMethodDelInvokeApp: invoking myMethod0()");

        target.test();

    }

    private static void do_redefine(int counter) throws Exception {

        File f = new File("RedefineMethodDelInvokeTarget_" + counter +

            ".class");

        System.out.println("Reading test class from " + f);

        InputStream redefineStream = new FileInputStream(f);

        byte[] redefineBuffer = NamedBuffer.loadBufferFromStream(redefineStream);

        ClassDefinition redefineParamBlock = new ClassDefinition(

            RedefineMethodDelInvokeTarget.class, redefineBuffer);

        RedefineMethodDelInvokeAgent.getInstrumentation().redefineClasses(

            new ClassDefinition[] {redefineParamBlock});

    }

}