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.
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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
  26  * @requires vm.cds
  27  * @bug 8005933
  28  * @summary -Xshare:auto is the default when -Xshare is not specified
  29  * @library /test/lib
  30  * @modules java.base/jdk.internal.misc
  31  *          java.management
  32  * @run main XShareAuto
  33  */
  34 
  35 import jdk.test.lib.Platform;
  36 import jdk.test.lib.process.ProcessTools;
  37 import jdk.test.lib.process.OutputAnalyzer;
  38 
  39 public class XShareAuto {
  40     public static void main(String[] args) throws Exception {
  41         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  42             "-server", "-XX:+UnlockDiagnosticVMOptions",
  43             "-XX:SharedArchiveFile=./XShareAuto.jsa", "-Xshare:dump");
  44         OutputAnalyzer output = new OutputAnalyzer(pb.start());
  45         output.shouldContain("Loading classes to share");
  46         output.shouldHaveExitValue(0);
  47 
  48 
  49         // We have 2 test cases:
  50         String cases[] = {
  51             "-Xshare:auto",    // case [1]: -Xshare:auto is explicitly specified.
  52             "-showversion"     // case [2]: -Xshare:auto is not explicitly specified,
  53                                //           but VM should still use it by default.
  54         };
  55 
  56         for (String x : cases) {
  57             pb = ProcessTools.createJavaProcessBuilder(
  58                 "-XX:+UnlockDiagnosticVMOptions",
  59                 "-XX:SharedArchiveFile=./XShareAuto.jsa",
  60                 "-Xlog:cds",
  61                 x,
  62                 "-version");
  63             output = new OutputAnalyzer(pb.start());
  64             String outputString = output.getOutput();










  65 
  66             if (!outputString.contains("Unable to map")) {
  67                 // sharing may not be enabled if XShareAuto.jsa cannot be mapped due to
  68                 // ASLR.


  69                 output.shouldContain("sharing");





  70             }
  71             output.shouldHaveExitValue(0);
  72         }
  73     }
  74 }
--- EOF ---