1 /*
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   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   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.
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  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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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 }