| /* |
| * Copyright 2019 Amazon.com, Inc. 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 8234011 |
| * @summary Check that jdk.nio.zipfs.ZipFileSystem doesn't cache more than ZipFileSystem.MAX_FLATER Inflater/Deflater objects |
| * @run main ReleaseDeflater |
| * @modules jdk.zipfs/jdk.nio.zipfs:+open |
| * @author Volker Simonis |
| */ |
| |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.lang.reflect.Field; |
| import java.net.URI; |
| import java.nio.file.FileSystem; |
| import java.nio.file.FileSystems; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.nio.file.spi.FileSystemProvider; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.ArrayList; |
| |
| public class ReleaseDeflater { |
| public static void main(String[] args) throws Throwable { |
| Path zipFile = Paths.get("ReleaseDeflaterTest.zip").toAbsolutePath(); |
| URI zipURI = URI.create("jar:" + zipFile.toUri()); |
| try (FileSystem fs = FileSystems.newFileSystem(zipURI, Map.of("create", "true"))) { |
| FileSystemProvider zprov = fs.provider(); |
| Path test = fs.getPath("test.txt"); |
| int STREAMS = 100; |
| List<OutputStream> ostreams = new ArrayList<>(STREAMS); |
| List<InputStream> istreams = new ArrayList<>(STREAMS); |
| for (int i = 0; i < STREAMS; i++) { |
| OutputStream zos = zprov.newOutputStream(test); |
| ostreams.add(zos); |
| zos.write("Hello".getBytes()); |
| } |
| for (OutputStream os : ostreams) { |
| os.close(); |
| } |
| for (int i = 0; i < STREAMS; i++) { |
| InputStream zis = zprov.newInputStream(test); |
| istreams.add(zis); |
| } |
| for (InputStream is : istreams) { |
| is.close(); |
| } |
| try { |
| Field max_flaters = fs.getClass().getDeclaredField("MAX_FLATER"); |
| max_flaters.setAccessible(true); |
| int MAX_FLATERS = max_flaters.getInt(fs); |
| Field inflaters = fs.getClass().getDeclaredField("inflaters"); |
| inflaters.setAccessible(true); |
| int inflater_count = ((List<?>) inflaters.get(fs)).size(); |
| if (inflater_count > MAX_FLATERS) { |
| throw new Exception("Too many inflaters " + inflater_count); |
| } |
| Field deflaters = fs.getClass().getDeclaredField("deflaters"); |
| deflaters.setAccessible(true); |
| int deflater_count = ((List<?>) deflaters.get(fs)).size(); |
| if (deflater_count > MAX_FLATERS) { |
| throw new Exception("Too many deflaters " + deflater_count); |
| } |
| } catch (NoSuchFieldException nsfe) { |
| // Probably the implementation has changed, so there's not much we can do... |
| throw new RuntimeException("Implementation of jdk.nio.zipfs.ZipFileSystem changed - disable or fix the test"); |
| } |
| } finally { |
| Files.deleteIfExists(zipFile); |
| } |
| |
| } |
| } |