| /* |
| * Copyright (c) 2010, 2014, 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 7007609 7009618 |
| * @summary Check that ZipFile objects are always collected |
| * @key randomness |
| */ |
| |
| import java.io.*; |
| import java.util.Random; |
| import java.util.zip.*; |
| import java.util.concurrent.CountDownLatch; |
| |
| public class FinalizeZipFile { |
| |
| private static final CountDownLatch finalizersDone = new CountDownLatch(3); |
| |
| private static class InstrumentedZipFile extends ZipFile { |
| |
| public InstrumentedZipFile(File f) throws Exception { |
| super(f); |
| System.out.printf("Using %s%n", f.getPath()); |
| } |
| @Override |
| protected void finalize() throws IOException { |
| System.out.printf("Killing %s%n", getName()); |
| super.finalize(); |
| finalizersDone.countDown(); |
| } |
| } |
| |
| private static void makeGarbage() throws Throwable { |
| final Random rnd = new Random(); |
| // Create some ZipFiles. |
| // Find some .jar files in test directory. |
| final File testdir = new File(System.getProperty("test.src", ".")); |
| check(testdir.isDirectory()); |
| final File[] jars = testdir.listFiles( |
| new FilenameFilter() { |
| public boolean accept(File dir, String name) { |
| return name.endsWith(".jar");}}); |
| check(jars.length > 1); |
| |
| new InstrumentedZipFile(jars[rnd.nextInt(jars.length)]).close(); |
| new InstrumentedZipFile(jars[rnd.nextInt(jars.length)]).close(); |
| |
| // Create a ZipFile and get an input stream from it |
| for (int i = 0; i < jars.length + 10; i++) { |
| ZipFile zf = new InstrumentedZipFile(jars[rnd.nextInt(jars.length)]); |
| ZipEntry ze = zf.getEntry("META-INF/MANIFEST.MF"); |
| if (ze != null) { |
| InputStream is = zf.getInputStream(ze); |
| break; |
| } |
| } |
| } |
| |
| public static void realMain(String[] args) throws Throwable { |
| makeGarbage(); |
| |
| System.gc(); |
| finalizersDone.await(); |
| |
| // Not all ZipFiles were collected? |
| equal(finalizersDone.getCount(), 0L); |
| } |
| |
| //--------------------- Infrastructure --------------------------- |
| static volatile int passed = 0, failed = 0; |
| static void pass() {passed++;} |
| static void fail() {failed++; Thread.dumpStack();} |
| static void fail(String msg) {System.out.println(msg); fail();} |
| static void unexpected(Throwable t) {failed++; t.printStackTrace();} |
| static void check(boolean cond) {if (cond) pass(); else fail();} |
| static void equal(Object x, Object y) { |
| if (x == null ? y == null : x.equals(y)) pass(); |
| else fail(x + " not equal to " + y);} |
| public static void main(String[] args) throws Throwable { |
| try {realMain(args);} catch (Throwable t) {unexpected(t);} |
| System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed); |
| if (failed > 0) throw new AssertionError("Some tests failed");} |
| } |