1 /*

     2  * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 /**

    25  * @test

    26  * @bug 8076987

    27  * @bug 8078438

    28  * @summary Verify UseCondCardMark works

    29  * @library /testlibrary /../../test/lib

    30  * @build Basic

    31  * @run main/othervm -Xint Basic

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

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

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

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

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

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

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

    39 */

    40 public class Basic {

    41 

    42     static volatile MyObject sink;

    43 

    44     public static void main(String args[]) {

    45         final int COUNT = 10000000;

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

    47              MyObject o = new MyObject();

    48              o.x = c;

    49              doStore(o);

    50         }

    51 

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

    53              throw new IllegalStateException("Failed");

    54         }

    55     }

    56 

    57     public static void doStore(MyObject o) {

    58         sink = o;

    59     }

    60 

    61     static class MyObject {

    62         int x;

    63     }

    64 

    65 }