1 /*

     2  * Copyright (c) 2013, 2019, 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 package gc.cms;

    25 

    26 /**

    27  * @test GuardShrinkWarning

    28  * @key gc regression

    29  * @summary Remove warning about CMS generation shrinking.

    30  * @bug 8012111

    31  * @requires vm.gc.ConcMarkSweep & !vm.graal.enabled

    32  * @library /test/lib

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

    34  *          java.management

    35  * @run main/othervm gc.cms.GuardShrinkWarning

    36  * @author jon.masamitsu@oracle.com

    37  */

    38 

    39 import jdk.test.lib.process.OutputAnalyzer;

    40 import jdk.test.lib.process.ProcessTools;

    41 

    42 public class GuardShrinkWarning {

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

    44 

    45     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(

    46       "-showversion",

    47       "-XX:+UseConcMarkSweepGC",

    48       "-XX:+ExplicitGCInvokesConcurrent",

    49       SystemGCCaller.class.getName()

    50       );

    51 

    52     OutputAnalyzer output = new OutputAnalyzer(pb.start());

    53 

    54     output.shouldNotContain("Shrinking of CMS not yet implemented");

    55 

    56     output.shouldNotContain("error");

    57 

    58     output.shouldHaveExitValue(0);

    59   }

    60   static class SystemGCCaller {

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

    62       System.gc();

    63     }

    64   }

    65 }