1 /*
   2  * Copyright (c) 2014, 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
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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
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 8059510
  27  * @summary Test SharedSymbolTableBucketSize option
  28  * @library /testlibrary
  29  * @build com.oracle.java.testlibrary.*
  30  * @run main/othervm SharedSymbolTableBucketSize
  31  */
  32 
  33 import com.oracle.java.testlibrary.*;
  34 
  35 public class SharedSymbolTableBucketSize {
  36     public static void main(String[] args) throws Exception {
  37         int bucket_size = 8;
  38         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  39             "-Xshare:dump", "-XX:+PrintSharedSpaces",
  40             "-XX:+UnlockDiagnosticVMOptions",
  41             "-XX:SharedArchiveFile=./sample.jsa",
  42             "-XX:SharedSymbolTableBucketSize=" + Integer.valueOf(bucket_size));
  43         OutputAnalyzer output = new OutputAnalyzer(pb.start());
  44         output.shouldContain("Loading classes to share");
  45         output.shouldHaveExitValue(0);
  46 
  47         String s = output.firstMatch("Average bucket size     : .*");
  48         Float f = Float.parseFloat(s.substring(25));
  49         int size = Math.round(f);
  50         if (size != bucket_size) {
  51           throw new Exception("FAILED: incorrect bucket size " + size +
  52                               ", expect " + bucket_size);
  53         }
  54 
  55 
  56         // Invalid SharedSymbolTableBucketSize input
  57         String input[] = {"-XX:SharedSymbolTableBucketSize=-1",
  58                           "-XX:SharedSymbolTableBucketSize=2.5"};
  59         for (int i = 0; i < input.length; i++) {
  60           pb = ProcessTools.createJavaProcessBuilder(
  61                "-Xshare:dump", "-XX:+PrintSharedSpaces",
  62                "-XX:+UnlockDiagnosticVMOptions",
  63                "-XX:SharedArchiveFile=./sample.jsa",
  64                input[i]);
  65           output = new OutputAnalyzer(pb.start());
  66           output.shouldContain("Improperly specified VM option");
  67       }
  68   }
  69 }