/*
 * 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.
 *
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 */

/*
 * @test
 * @bug 8055008
 * @summary Redefine EMCP and non-EMCP methods that are running in an infinite loop
 * @library /testlibrary
 * @build RedefineClassHelper
 * @run main RedefineClassHelper
 * @run main/othervm -javaagent:redefineagent.jar RedefineRunningMethods
 */
public class RedefineRunningMethods {

    public static String newB =
                "class RedefineRunningMethods$B {" +
                "   static int count1 = 0;" +
                "   static int count2 = 0;" +
                "   public static boolean stop = false;" +
                "   public static void infinite() { " +
                "       System.out.println(\"infinite called\");" +
                "   }" +
                "   public static void infinite_emcp() { " +
                "       while (!stop) { count2++; }" +
                "   }" +
                "}";

    static class B {
        static int count1 = 0;
        static int count2 = 0;
        public static boolean stop = false;
        public static void infinite() {
            while (!stop) { count1++; }
        }
        public static void infinite_emcp() {
            while (!stop) { count2++; }
        }
    }


    public static void main(String[] args) throws Exception {

        new Thread() {
            public void run() {
                B.infinite();
            }
        }.start();

        new Thread() {
            public void run() {
                B.infinite_emcp();
            }
        }.start();

        RedefineClassHelper.redefineClass(B.class, newB);

        System.gc();

        B.stop = true;

        for (int i = 0; i < 100 ; i++) {
            System.out.println("calling infinite_emcp with stop = true");
            B.infinite();
            B.infinite_emcp();
            System.gc();
        }
    }
}