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10971
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1 /*
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2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23
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24 /*
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25 * @test CdsDifferentObjectAlignment
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26 * @summary Testing CDS (class data sharing) using varying object alignment.
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27 * Using different object alignment for each dump/load pair.
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28 * This is a negative test; using object alignment for loading that
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29 * is different from object alignment for creating a CDS file
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30 * should fail when loading.
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31 * @library /testlibrary
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32 */
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33
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34 import com.oracle.java.testlibrary.*;
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35
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36 public class CdsDifferentObjectAlignment {
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37 public static void main(String[] args) throws Exception {
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38 String nativeWordSize = System.getProperty("sun.arch.data.model");
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39 if (!Platform.is64bit()) {
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40 System.out.println("ObjectAlignmentInBytes for CDS is only " +
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41 "supported on 64bit platforms; this plaform is " +
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42 nativeWordSize);
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43 System.out.println("Skipping the test");
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44 } else {
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45 createAndLoadSharedArchive(16, 64);
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46 createAndLoadSharedArchive(64, 32);
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47 }
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48 }
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49
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50
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51 // Parameters are object alignment expressed in bytes
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52 private static void
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53 createAndLoadSharedArchive(int createAlignment, int loadAlignment)
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54 throws Exception {
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55 String createAlignmentArgument = "-XX:ObjectAlignmentInBytes=" +
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56 createAlignment;
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57 String loadAlignmentArgument = "-XX:ObjectAlignmentInBytes=" +
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58 loadAlignment;
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59
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60 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
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61 "-XX:+UnlockDiagnosticVMOptions",
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62 "-XX:SharedArchiveFile=./sample.jsa",
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63 "-Xshare:dump",
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64 createAlignmentArgument);
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65
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66 OutputAnalyzer output = new OutputAnalyzer(pb.start());
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67 output.shouldContain("Loading classes to share");
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68 output.shouldHaveExitValue(0);
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69
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70 pb = ProcessTools.createJavaProcessBuilder(
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71 "-XX:+UnlockDiagnosticVMOptions",
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72 "-XX:SharedArchiveFile=./sample.jsa",
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73 "-Xshare:on",
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74 loadAlignmentArgument,
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75 "-version");
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76
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77 output = new OutputAnalyzer(pb.start());
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78 String expectedErrorMsg =
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79 String.format(
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80 "The shared archive file's ObjectAlignmentInBytes of %d " +
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81 "does not equal the current ObjectAlignmentInBytes of %d",
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82 createAlignment,
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83 loadAlignment);
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84
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85 output.shouldContain(expectedErrorMsg);
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86 output.shouldHaveExitValue(1);
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87 }
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88 }
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