1 /*
   2  * Copyright (c) 2017, 2018, 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 8130072
  27  * @summary Check that Shared Dictionary is printed out with jcmd
  28  * @requires vm.cds
  29  * @library /test/lib
  30  * @modules java.base/jdk.internal.misc
  31  * @run main DumpSharedDictionary
  32  */
  33 
  34 import jdk.test.lib.cds.CDSTestUtils;
  35 import jdk.test.lib.process.ProcessTools;
  36 import jdk.test.lib.process.OutputAnalyzer;
  37 import jdk.test.lib.JDKToolFinder;
  38 
  39 public class DumpSharedDictionary {
  40 
  41     public static void main(String[] args) throws Exception {
  42         if (args.length == 0) {
  43             // Start this process
  44             ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  45                 "-XX:+UnlockDiagnosticVMOptions",
  46                 "-XX:SharedArchiveFile=./DumpSharedDictionary.jsa",
  47                 "-Xshare:dump");
  48 
  49             OutputAnalyzer out = CDSTestUtils.executeAndLog(pb, "dump");
  50             out.shouldHaveExitValue(0);
  51 
  52             String testjdkPath = System.getProperty("test.jdk");
  53 
  54             pb = ProcessTools.createJavaProcessBuilder(
  55                     "-XX:+UnlockDiagnosticVMOptions",
  56                     "-XX:SharedArchiveFile=./DumpSharedDictionary.jsa",
  57                     "-Dtest.jdk=" + testjdkPath,
  58                     "-Xshare:on", "DumpSharedDictionary", "test");
  59 
  60             out = CDSTestUtils.executeAndLog(pb, "exec");
  61             if (!CDSTestUtils.isUnableToMap(out)) {
  62                 out.shouldHaveExitValue(0);
  63             }
  64         } else {
  65             // Grab my own PID
  66             String pid = Long.toString(ProcessTools.getProcessId());
  67 
  68             ProcessBuilder pb = new ProcessBuilder();
  69             pb.command(new String[] {JDKToolFinder.getJDKTool("jcmd"), pid, "VM.systemdictionary"});
  70             OutputAnalyzer output = CDSTestUtils.executeAndLog(pb, "jcmd-systemdictionary");
  71             try {
  72                 output.shouldContain("Shared Dictionary statistics:");
  73                 output.shouldContain("Number of buckets");
  74                 output.shouldContain("Number of entries");
  75                 output.shouldContain("Maximum bucket size");
  76             } catch (RuntimeException e) {
  77                 output.shouldContain("Unknown diagnostic command");
  78             }
  79 
  80             pb.command(new String[] {JDKToolFinder.getJDKTool("jcmd"), pid, "VM.systemdictionary", "-verbose"});
  81             output = CDSTestUtils.executeAndLog(pb, "jcmd-systemdictionary-verbose");
  82             try {
  83                 output.shouldContain("Shared Dictionary");
  84                 output.shouldContain("Dictionary for loader data: 0x");
  85                 output.shouldContain("^java.lang.String");
  86             } catch (RuntimeException e) {
  87                 output.shouldContain("Unknown diagnostic command");
  88             }
  89         }
  90     }
  91 }