1 /*
   2  * Copyright (c) 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 import java.net.URI;
  25 import java.nio.file.FileSystem;
  26 import java.nio.file.FileSystems;
  27 import java.nio.file.FileVisitResult;
  28 import java.nio.file.Files;
  29 import java.nio.file.Path;
  30 import java.nio.file.SimpleFileVisitor;
  31 import java.nio.file.attribute.BasicFileAttributes;
  32 
  33 /**
  34  * @test
  35  * @bug 8189604
  36  * @run main/othervm -Djava.awt.headless=false HangDuringStaticInitialization
  37  * @run main/othervm -Djava.awt.headless=true HangDuringStaticInitialization
  38  */
  39 public final class HangDuringStaticInitialization {
  40 
  41     public static void main(final String[] args) throws Exception {
  42         FileSystem fs = FileSystems.getFileSystem(URI.create("jrt:/"));
  43         test(fs, "/modules/java.desktop");
  44         test(fs, "/modules/java.datatransfer");
  45     }
  46 
  47     private static void test(FileSystem fs, String s) throws Exception {
  48         Files.walkFileTree(fs.getPath(s), new SimpleFileVisitor<>() {
  49             @Override
  50             public FileVisitResult visitFile(Path file,
  51                                              BasicFileAttributes attrs) {
  52                 file = file.subpath(2, file.getNameCount());
  53                 String name = file.toString();
  54                 if (name.endsWith(".class")) {
  55                     name = name.substring(0, name.indexOf(".")).replace('/', '.');
  56                     try {
  57                         Class.forName(name, true, null);
  58                     } catch (Throwable e) {
  59                         // only the crash / hang will be considered as failure
  60                     }
  61                 }
  62                 return FileVisitResult.CONTINUE;
  63             }
  64         });
  65     }
  66 }