1 /*
   2  * Copyright (c) 2014, 2017, Oracle and/or its affiliates. All rights reserved.
   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
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  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
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 8059510
  27  * @summary Test SharedSymbolTableBucketSize option
  28  * @library /test/lib
  29  * @modules java.base/jdk.internal.misc
  30  *          java.management
  31  */
  32 
  33 import jdk.test.lib.cds.CDSTestUtils;
  34 import jdk.test.lib.process.OutputAnalyzer;
  35 
  36 public class SharedSymbolTableBucketSize {
  37     public static void main(String[] args) throws Exception {
  38         int bucket_size = 8;
  39 
  40         OutputAnalyzer output =
  41             CDSTestUtils.createArchive("-XX:SharedSymbolTableBucketSize="
  42                                        + Integer.valueOf(bucket_size));
  43         CDSTestUtils.checkDump(output);
  44 
  45         if (!CDSTestUtils.isUnableToMap(output)) {
  46             String s = output.firstMatch("Average bucket size     : .*");
  47             Float f = Float.parseFloat(s.substring(25));
  48             int size = Math.round(f);
  49             if (size != bucket_size) {
  50                 throw new Exception("FAILED: incorrect bucket size " + size +
  51                                     ", expect " + bucket_size);
  52             }
  53         }
  54 
  55         // Invalid SharedSymbolTableBucketSize input
  56         String input[] = {"-XX:SharedSymbolTableBucketSize=-1",
  57                           "-XX:SharedSymbolTableBucketSize=2.5"};
  58         for (int i = 0; i < input.length; i++) {
  59             CDSTestUtils.createArchive(input[i])
  60                 .shouldContain("Improperly specified VM option")
  61                 .shouldHaveExitValue(1);
  62         }
  63     }
  64 }