1 /*
   2  * Copyright (c) 2019, 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 import java.io.File;
  26 import java.nio.charset.Charset;
  27 import java.nio.file.Files;
  28 import java.nio.file.Path;
  29 import java.nio.file.Paths;
  30 import java.util.List;
  31 import java.util.ArrayList;
  32 
  33 /*
  34  * @test
  35  * @summary Try to archive lots of classes by searching for classes from the jrt:/ file system. With JDK 12
  36  *          this will produce an archive with over 30,000 classes.
  37  * @requires vm.cds
  38  * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds /test/hotspot/jtreg/runtime/cds/appcds/dynamicArchive/test-classes
  39  * @build LoadClasses
  40  * @build sun.hotspot.WhiteBox
  41  * @run driver ClassFileInstaller -jar loadclasses.jar LoadClasses
  42  * @run driver ClassFileInstaller -jar whitebox.jar sun.hotspot.WhiteBox sun.hotspot.WhiteBox$WhiteBoxPermission
  43  * @run main/othervm/timeout=500 -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:./whitebox.jar DynamicLotsOfClasses
  44  */
  45 
  46 public class DynamicLotsOfClasses extends DynamicArchiveTestBase {
  47 
  48     public static void main(String[] args) throws Exception {
  49         runTest(DynamicLotsOfClasses::testDefaultBase);
  50     }
  51 
  52     static void testDefaultBase() throws Exception {
  53         String topArchiveName = getNewArchiveName("top");
  54         doTest(topArchiveName);
  55     }
  56 
  57     private static void doTest(String topArchiveName) throws Exception {
  58         ArrayList<String> list = new ArrayList<>();
  59         TestCommon.findAllClasses(list);
  60 
  61         String classList = System.getProperty("user.dir") + File.separator +
  62                            "LotsOfClasses.list";
  63         List<String> lines = list;
  64         Path file = Paths.get(classList);
  65         Files.write(file, lines, Charset.forName("UTF-8"));
  66 
  67         String appJar = ClassFileInstaller.getJarPath("loadclasses.jar");
  68         String mainClass = "LoadClasses";
  69 
  70         String whiteBoxJar = ClassFileInstaller.getJarPath("whitebox.jar");
  71         String bootClassPath = "-Xbootclasspath/a:" + whiteBoxJar;
  72         dump(topArchiveName,
  73              "--add-modules",
  74              "ALL-SYSTEM",
  75              "-Xlog:hashtables",
  76              "-Xmx500m",
  77              "-Xlog:cds,cds+dynamic",
  78              bootClassPath,
  79              "-XX:+UnlockDiagnosticVMOptions", "-XX:+WhiteBoxAPI",
  80              "-cp", appJar, mainClass, classList)
  81              .assertNormalExit(output -> {
  82                  output.shouldContain("Buffer-space to target-space delta")
  83                         .shouldContain("Written dynamic archive 0x");
  84              });
  85     }
  86 }