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/*
* Copyright (c) 2014, 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/* @test
* @bug 8038491
* @summary Crash in ZipFile.read() when ZipFileInputStream is shared between threads
* @library /test/lib
* @build jdk.test.lib.Platform
* jdk.test.lib.util.FileUtils
* @run main MultiThreadedReadTest
* @key randomness
*/
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.nio.file.Paths;
import java.util.Random;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;
import jdk.test.lib.util.FileUtils;
public class MultiThreadedReadTest extends Thread {
private static final int NUM_THREADS = 10;
private static final String ZIPFILE_NAME = "large.zip";
private static final String ZIPENTRY_NAME = "random.txt";
private static InputStream is = null;
public static void main(String args[]) throws Exception {
createZipFile();
try (ZipFile zf = new ZipFile(new File(ZIPFILE_NAME))) {
is = zf.getInputStream(zf.getEntry(ZIPENTRY_NAME));
Thread[] threadArray = new Thread[NUM_THREADS];
for (int i = 0; i < threadArray.length; i++) {
threadArray[i] = new MultiThreadedReadTest();
}
for (int i = 0; i < threadArray.length; i++) {
threadArray[i].start();
}
for (int i = 0; i < threadArray.length; i++) {
threadArray[i].join();
}
} finally {
FileUtils.deleteFileIfExistsWithRetry(Paths.get(ZIPFILE_NAME));
}
}
private static void createZipFile() throws Exception {
try (ZipOutputStream zos =
new ZipOutputStream(new FileOutputStream(ZIPFILE_NAME))) {
zos.putNextEntry(new ZipEntry(ZIPENTRY_NAME));
StringBuilder sb = new StringBuilder();
Random rnd = new Random();
for(int i = 0; i < 1000; i++) {
// append some random string for ZipEntry
sb.append(Long.toString(rnd.nextLong()));
}
byte[] b = sb.toString().getBytes();
zos.write(b, 0, b.length);
}
}
@Override
public void run() {
try {
while (is.read() != -1) { }
} catch (Exception e) {
// Swallow any Exceptions (which are expected) - we're only interested in the crash
}
}
}
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