| /* |
| * Copyright (c) 2005, 2011, 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 5092263 |
| * @summary GZIPInputStream o GZIPOutputStream === the identity stream |
| * @author Martin Buchholz |
| * @key randomness |
| */ |
| |
| // To manually test for uncompressed streams larger than 2GB, do |
| // javac Accordion.java && java -server Accordion 3325349068 |
| // javac Accordion.java && java -server Accordion 5470735564 |
| |
| import java.io.*; |
| import java.util.*; |
| import java.util.zip.GZIPInputStream; |
| import java.util.zip.GZIPOutputStream; |
| |
| public class Accordion { |
| private static void readFully(InputStream s, byte[] buf) throws Throwable { |
| int pos = 0; |
| int n; |
| while ((n = s.read(buf, pos, buf.length-pos)) > 0) |
| pos += n; |
| if (pos != buf.length) |
| throw new Exception("Unexpected EOF"); |
| } |
| |
| private static volatile Throwable trouble; |
| |
| public static void main(String[] args) throws Throwable { |
| if (args.length > 1) |
| throw new Exception("Usage: java Accordion [BYTES]"); |
| |
| final long bytes = args.length == 0 ? 10001 : Long.parseLong(args[0]); |
| final int bufsize = 1729; |
| final long count = bytes/bufsize; |
| final PipedOutputStream out = new PipedOutputStream(); |
| final PipedInputStream in = new PipedInputStream(out); |
| final Random random = new Random(); |
| final byte[] data = new byte[1729]; |
| for (int i = 0; i < data.length; i++) |
| data[i] = (byte)random.nextInt(255); |
| System.out.println("count="+count); |
| |
| Thread compressor = new Thread() { public void run() { |
| try (GZIPOutputStream s = new GZIPOutputStream(out)) { |
| for (long i = 0; i < count; i++) |
| s.write(data, 0, data.length); |
| } catch (Throwable t) { trouble = t; }}}; |
| |
| Thread uncompressor = new Thread() { public void run() { |
| try (GZIPInputStream s = new GZIPInputStream(in)) { |
| final byte[] maybeBytes = new byte[data.length]; |
| for (long i = 0; i < count; i++) { |
| readFully(s, maybeBytes); |
| if (! Arrays.equals(data, maybeBytes)) |
| throw new Exception("data corruption"); |
| } |
| if (s.read(maybeBytes, 0, 1) > 0) |
| throw new Exception("Unexpected NON-EOF"); |
| } catch (Throwable t) { trouble = t; }}}; |
| |
| compressor.start(); uncompressor.start(); |
| compressor.join(); uncompressor.join(); |
| |
| if (trouble != null) |
| throw trouble; |
| } |
| } |