/*
* 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
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* questions.
*/
/* @test
* @bug 5092263
* @summary GZIPInputStream o GZIPOutputStream === the identity stream
* @author Martin Buchholz
*/
// 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;
}
}