1 /*

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

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     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).

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    23 

    24 /**

    25  * @test CdsDifferentObjectAlignment

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

    27  *          Using different object alignment for each dump/load pair.

    28  *          This is a negative test; using  object alignment for loading that

    29  *          is different from object alignment for creating a CDS file

    30  *          should fail when loading.

    31  * @requires vm.cds

    32  * @requires vm.bits == 64

    33  * @library /test/lib

    34  * @bug 8025642

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

    36  *          java.management

    37  * @run driver CdsDifferentObjectAlignment

    38  */

    39 

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

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

    42 import jdk.test.lib.Platform;

    43 

    44 public class CdsDifferentObjectAlignment {

    45 

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

    47         createAndLoadSharedArchive(16, 64);

    48         createAndLoadSharedArchive(64, 32);

    49     }

    50 

    51     // Parameters are object alignment expressed in bytes

    52     private static void

    53     createAndLoadSharedArchive(int createAlignment, int loadAlignment)

    54     throws Exception {

    55         String createAlignmentArgument = "-XX:ObjectAlignmentInBytes=" +

    56             createAlignment;

    57         String loadAlignmentArgument = "-XX:ObjectAlignmentInBytes=" +

    58             loadAlignment;

    59         String expectedErrorMsg =

    60             String.format(

    61             "The shared archive file's ObjectAlignmentInBytes of %d " +

    62             "does not equal the current ObjectAlignmentInBytes of %d",

    63             createAlignment,

    64             loadAlignment);

    65 

    66         CDSTestUtils.createArchiveAndCheck(createAlignmentArgument);

    67 

    68         OutputAnalyzer out = CDSTestUtils.runWithArchive(loadAlignmentArgument);

    69         CDSTestUtils.checkExecExpectError(out, 1, expectedErrorMsg);

    70     }

    71 }