/*

 * Copyright (c) 2014, 2016, 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.

 */

/**

 * @test

 * @bug 8076987

 * @bug 8078438

 * @summary Verify UseCondCardMark works

 * @modules java.base/jdk.internal.misc

 * @run main/othervm -Xint Basic

 * @run main/othervm -Xint -XX:+UseCondCardMark Basic

 * @run main/othervm -XX:TieredStopAtLevel=1 Basic

 * @run main/othervm -XX:TieredStopAtLevel=1 -XX:+UseCondCardMark Basic

 * @run main/othervm -XX:TieredStopAtLevel=4 Basic

 * @run main/othervm -XX:TieredStopAtLevel=4 -XX:+UseCondCardMark Basic

 * @run main/othervm -XX:-TieredCompilation Basic

 * @run main/othervm -XX:-TieredCompilation -XX:+UseCondCardMark Basic

*/

public class Basic {

    static volatile MyObject sink;

    public static void main(String args[]) {

        final int COUNT = 10000000;

        for (int c = 0; c < COUNT; c++) {

             MyObject o = new MyObject();

             o.x = c;

             doStore(o);

        }

        if (sink.x != COUNT-1) {

             throw new IllegalStateException("Failed");

        }

    }

    public static void doStore(MyObject o) {

        sink = o;

    }

    static class MyObject {

        int x;

    }

}