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 /*
  26  * @test
  27  * @summary Write a lots of shared strings.
  28  * @requires vm.cds.archived.java.heap
  29  * @library /test/hotspot/jtreg/runtime/appcds /test/lib
  30  * @modules jdk.jartool/sun.tools.jar
  31  * @build HelloString
  32  * @run driver SharedStringsStress
  33  * @run main/othervm -XX:+UseStringDeduplication SharedStringsStress
  34  * @run main/othervm -XX:-CompactStrings SharedStringsStress
  35  */
  36 import java.io.File;
  37 import java.io.FileOutputStream;
  38 import java.io.OutputStreamWriter;
  39 import java.io.PrintWriter;
  40 import jdk.test.lib.process.OutputAnalyzer;
  41 import jdk.test.lib.process.ProcessTools;
  42 
  43 public class SharedStringsStress {
  44     public static void main(String[] args) throws Exception {

  45         String appJar = JarBuilder.build("SharedStringsStress", "HelloString");
  46 
  47         String sharedArchiveConfigFile = System.getProperty("user.dir") + File.separator + "SharedStringsStress_gen.txt";
  48         try (FileOutputStream fos = new FileOutputStream(sharedArchiveConfigFile)) {
  49             PrintWriter out = new PrintWriter(new OutputStreamWriter(fos));
  50             out.println("VERSION: 1.0");
  51             out.println("@SECTION: String");
  52             out.println("31: shared_test_string_unique_14325");
  53             for (int i=0; i<100000; i++) {
  54                 String s = "generated_string " + i;
  55                 out.println(s.length() + ": " + s);
  56             }
  57             out.close();
  58         }
  59 
  60         OutputAnalyzer dumpOutput = TestCommon.dump(appJar, TestCommon.list("HelloString"),
  61                                                     "-XX:SharedArchiveConfigFile=" + sharedArchiveConfigFile);

  62         TestCommon.checkDump(dumpOutput);
  63         OutputAnalyzer execOutput = TestCommon.exec(appJar, "HelloString");

  64         TestCommon.checkExec(execOutput);
  65     }
  66 }
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