1 /* 2 * Copyright (c) 2014, 2017, 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 /test/lib 28 * @build jdk.test.lib.Platform 29 * jdk.test.lib.Utils 30 * jdk.test.lib.Asserts 31 * jdk.test.lib.JDKToolFinder 32 * jdk.test.lib.JDKToolLauncher 33 * jdk.test.lib.process.* 34 * jdk.test.lib.util.FileUtils 35 * @run main MultiThreadedReadTest 36 * @key randomness 37 */ 38 39 import java.io.File; 40 import java.io.FileOutputStream; 41 import java.io.InputStream; 42 import java.nio.file.Paths; 43 import java.util.Random; 44 import java.util.zip.ZipEntry; 45 import java.util.zip.ZipFile; 46 import java.util.zip.ZipOutputStream; 47 import jdk.test.lib.util.FileUtils; 48 49 public class MultiThreadedReadTest extends Thread { 50 51 private static final int NUM_THREADS = 10; 52 private static final String ZIPFILE_NAME = "large.zip"; 53 private static final String ZIPENTRY_NAME = "random.txt"; 54 private static InputStream is = null; 55 56 public static void main(String args[]) throws Exception { 57 createZipFile(); 58 try (ZipFile zf = new ZipFile(new File(ZIPFILE_NAME))) { 59 is = zf.getInputStream(zf.getEntry(ZIPENTRY_NAME)); 60 Thread[] threadArray = new Thread[NUM_THREADS]; 61 for (int i = 0; i < threadArray.length; i++) { 62 threadArray[i] = new MultiThreadedReadTest(); 63 } 64 for (int i = 0; i < threadArray.length; i++) { 65 threadArray[i].start(); 66 } 67 for (int i = 0; i < threadArray.length; i++) { 68 threadArray[i].join(); 69 } 70 } finally { 71 FileUtils.deleteFileIfExistsWithRetry(Paths.get(ZIPFILE_NAME)); 72 } 73 } 74 75 private static void createZipFile() throws Exception { 76 try (ZipOutputStream zos = 77 new ZipOutputStream(new FileOutputStream(ZIPFILE_NAME))) { 78 79 zos.putNextEntry(new ZipEntry(ZIPENTRY_NAME)); 80 StringBuilder sb = new StringBuilder(); 81 Random rnd = new Random(); 82 for(int i = 0; i < 1000; i++) { 83 // append some random string for ZipEntry 84 sb.append(Long.toString(rnd.nextLong())); 85 } 86 byte[] b = sb.toString().getBytes(); 87 zos.write(b, 0, b.length); 88 } 89 } 90 91 @Override 92 public void run() { 93 try { 94 while (is.read() != -1) { } 95 } catch (Exception e) { 96 // Swallow any Exceptions (which are expected) - we're only interested in the crash 97 } 98 } 99 }