1 /*

     2  * Copyright (c) 2013, 2018, 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.

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     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  *

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

    18  *

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    23 

    24 /**

    25  * @test CdsSameObjectAlignment

    26  * @summary Testing CDS (class data sharing) using varying object alignment.

    27  *          Using same object alignment for each dump/load pair

    28  * @requires vm.cds

    29  * @requires vm.bits == 64

    30  * @library /test/lib

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

    32  *          java.management

    33  * @run driver CdsSameObjectAlignment

    34  */

    35 

    36 import jdk.test.lib.Platform;

    37 import jdk.test.lib.cds.CDSTestUtils;

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

    39 

    40 public class CdsSameObjectAlignment {

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

    42         dumpAndLoadSharedArchive(8);

    43         dumpAndLoadSharedArchive(16);

    44         dumpAndLoadSharedArchive(32);

    45         dumpAndLoadSharedArchive(64);

    46     }

    47 

    48     private static void

    49     dumpAndLoadSharedArchive(int objectAlignmentInBytes) throws Exception {

    50         String objectAlignmentArg = "-XX:ObjectAlignmentInBytes="

    51             + objectAlignmentInBytes;

    52         System.out.println("dumpAndLoadSharedArchive(): objectAlignmentInBytes = "

    53             + objectAlignmentInBytes);

    54 

    55         CDSTestUtils.createArchiveAndCheck(objectAlignmentArg);

    56         CDSTestUtils.runWithArchiveAndCheck(objectAlignmentArg);

    57     }

    58 }