1 /*
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   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
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  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
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  22  */
  23 
  24 /*
  25  * @test CdsDifferentCompactStrings
  26  * @summary CDS (class data sharing) requires the same -XX:[+-]CompactStrings
  27  *          setting between archive creation time and load time.
  28  * @library /testlibrary
  29  * @modules java.base/sun.misc
  30  *          java.management
  31  */
  32 
  33 import jdk.test.lib.*;
  34 
  35 public class CdsDifferentCompactStrings {
  36     public static void main(String[] args) throws Exception {
  37         createAndLoadSharedArchive("+", "-");
  38         createAndLoadSharedArchive("-", "+");
  39     }
  40 
  41     private static void createAndLoadSharedArchive(String create, String load)
  42         throws Exception
  43     {
  44         String createCompactStringsArgument = "-XX:" + create + "CompactStrings";
  45         String loadCompactStringsArgument   = "-XX:" + load   + "CompactStrings";
  46 
  47         String filename = "./CdsDifferentCompactStrings" + create + ".jsa";
  48 
  49         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  50             "-XX:+UnlockDiagnosticVMOptions",
  51             "-XX:SharedArchiveFile=" + filename,
  52             "-Xshare:dump",
  53             createCompactStringsArgument);
  54 
  55         OutputAnalyzer output = new OutputAnalyzer(pb.start());
  56         output.shouldContain("Loading classes to share");
  57         output.shouldHaveExitValue(0);
  58 
  59         pb = ProcessTools.createJavaProcessBuilder(
  60             "-XX:+UnlockDiagnosticVMOptions",
  61             "-XX:SharedArchiveFile=" + filename,
  62             "-Xshare:on",
  63             loadCompactStringsArgument,
  64             "-version");
  65 
  66         output = new OutputAnalyzer(pb.start());
  67         try {
  68             output.shouldContain("The shared archive file's CompactStrings " +
  69                 "setting .* does not equal the current CompactStrings setting");
  70         } catch (RuntimeException e) {
  71             output.shouldContain("Unable to use shared archive");
  72         }
  73         output.shouldHaveExitValue(1);
  74     }
  75 }