104 lines
3.9 KiB
Java
104 lines
3.9 KiB
Java
/*
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* Copyright (c) 2010, 2014, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @bug 7007609 7009618
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* @summary Check that ZipFile objects are always collected
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* @key randomness
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*/
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import java.io.*;
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import java.util.Random;
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import java.util.zip.*;
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import java.util.concurrent.CountDownLatch;
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public class FinalizeZipFile {
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private final static CountDownLatch finalizersDone = new CountDownLatch(3);
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private static class InstrumentedZipFile extends ZipFile {
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public InstrumentedZipFile(File f) throws Exception {
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super(f);
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System.out.printf("Using %s%n", f.getPath());
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}
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@Override
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protected void finalize() throws IOException {
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System.out.printf("Killing %s%n", getName());
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super.finalize();
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finalizersDone.countDown();
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}
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}
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private static void makeGarbage() throws Throwable {
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final Random rnd = new Random();
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// Create some ZipFiles.
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// Find some .jar files in test directory.
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final File testdir = new File(System.getProperty("test.src", "."));
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check(testdir.isDirectory());
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final File[] jars = testdir.listFiles(
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new FilenameFilter() {
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public boolean accept(File dir, String name) {
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return name.endsWith(".jar");}});
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check(jars.length > 1);
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new InstrumentedZipFile(jars[rnd.nextInt(jars.length)]).close();
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new InstrumentedZipFile(jars[rnd.nextInt(jars.length)]).close();
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// Create a ZipFile and get an input stream from it
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for (int i = 0; i < jars.length + 10; i++) {
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ZipFile zf = new InstrumentedZipFile(jars[rnd.nextInt(jars.length)]);
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ZipEntry ze = zf.getEntry("META-INF/MANIFEST.MF");
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if (ze != null) {
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InputStream is = zf.getInputStream(ze);
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break;
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}
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}
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}
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public static void realMain(String[] args) throws Throwable {
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makeGarbage();
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System.gc();
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finalizersDone.await();
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// Not all ZipFiles were collected?
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equal(finalizersDone.getCount(), 0L);
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}
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//--------------------- Infrastructure ---------------------------
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static volatile int passed = 0, failed = 0;
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static void pass() {passed++;}
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static void fail() {failed++; Thread.dumpStack();}
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static void fail(String msg) {System.out.println(msg); fail();}
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static void unexpected(Throwable t) {failed++; t.printStackTrace();}
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static void check(boolean cond) {if (cond) pass(); else fail();}
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static void equal(Object x, Object y) {
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if (x == null ? y == null : x.equals(y)) pass();
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else fail(x + " not equal to " + y);}
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public static void main(String[] args) throws Throwable {
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try {realMain(args);} catch (Throwable t) {unexpected(t);}
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System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
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if (failed > 0) throw new AssertionError("Some tests failed");}
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}
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