--- /dev/null 2010-11-16 15:31:07.886771372 -0800 +++ new/test/java/util/zip/ZipFile/FinalizeZipFile.java 2010-12-17 12:55:24.988314726 -0800 @@ -0,0 +1,104 @@ +/* + * Copyright (c) 2010, 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 + * @summary Check that ZipFile objects are always collected + */ + +import java.io.*; +import java.nio.*; +import java.util.Random; +import java.util.zip.*; +import java.util.concurrent.CountDownLatch; +import java.util.concurrent.TimeUnit; +import java.util.concurrent.atomic.AtomicInteger; +import sun.nio.ByteBuffered; + +public class FinalizeZipFile { + + private final static 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()); + } + 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(); + final String javaHome = System.getProperty("java.home"); + // Create some ZipFiles. + // Find some .jar files in JDK's lib directory. + final File lib = new File(javaHome, "lib"); + check(lib.isDirectory()); + final File[] jars = lib.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 + ZipFile zf = new InstrumentedZipFile(jars[rnd.nextInt(jars.length)]); + ZipEntry ze = zf.getEntry("META-INF/MANIFEST.MF"); + InputStream is = zf.getInputStream(ze); + } + + public static void realMain(String[] args) throws Throwable { + makeGarbage(); + + System.gc(); + finalizersDone.await(5, TimeUnit.SECONDS); + + // 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");} +} + + +