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 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 /* @test 25 * @bug 8038491 26 * @summary Crash in ZipFile.read() when ZipFileInputStream is shared between threads 27 * @library /lib/testlibrary 28 * @build jdk.testlibrary.FileUtils 29 * @run main MultiThreadedReadTest 30 */ 31 32 import java.io.File; 33 import java.io.FileOutputStream; 34 import java.io.InputStream; 35 import java.nio.file.Paths; 36 import java.util.Random; 37 import java.util.zip.ZipEntry; 38 import java.util.zip.ZipFile; 39 import java.util.zip.ZipOutputStream; 40 import jdk.testlibrary.FileUtils; 41 42 public class MultiThreadedReadTest extends Thread { 43 44 private static final int NUM_THREADS = 10; 45 private static final String ZIPFILE_NAME = "large.zip"; 46 private static final String ZIPENTRY_NAME = "random.txt"; 47 private static InputStream is = null; 48 49 public static void main(String args[]) throws Exception { 50 createZipFile(); 51 try (ZipFile zf = new ZipFile(new File(ZIPFILE_NAME))) { 52 is = zf.getInputStream(zf.getEntry(ZIPENTRY_NAME)); 53 Thread[] threadArray = new Thread[NUM_THREADS]; 54 for (int i = 0; i < threadArray.length; i++) { 55 threadArray[i] = new MultiThreadedReadTest(); 56 } 57 for (int i = 0; i < threadArray.length; i++) { 58 threadArray[i].start(); 59 } 60 for (int i = 0; i < threadArray.length; i++) { 61 threadArray[i].join(); 62 } 63 } finally { 64 FileUtils.deleteFileIfExistsWithRetry(Paths.get(ZIPFILE_NAME)); 65 } 66 } 67 68 private static void createZipFile() throws Exception { 69 try (ZipOutputStream zos = 70 new ZipOutputStream(new FileOutputStream(ZIPFILE_NAME))) { 71 72 zos.putNextEntry(new ZipEntry(ZIPENTRY_NAME)); 73 StringBuilder sb = new StringBuilder(); 74 Random rnd = new Random(); 75 for(int i = 0; i < 1000; i++) { 76 // append some random string for ZipEntry 77 sb.append(Long.toString(rnd.nextLong())); 78 } 79 byte[] b = sb.toString().getBytes(); 80 zos.write(b, 0, b.length); 81 } 82 } 83 84 @Override 85 public void run() { 86 try { 87 while (is.read() != -1) { } 88 } catch (Exception e) { 89 // Swallow any Exceptions (which are expected) - we're only interested in the crash 90 } 91 } 92 }