| /* |
| * Copyright (c) 2005, 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 6348045 |
| * @summary GZipOutputStream/InputStream goes critical(calls JNI_Get*Critical) |
| * and causes slowness. This test uses Deflater and Inflater directly. |
| * @key randomness |
| */ |
| |
| import java.io.*; |
| import java.nio.*; |
| import java.util.*; |
| import java.util.zip.*; |
| |
| /** |
| * This test runs Inflater and Defalter in a number of simultaneous threads, |
| * validating that the deflated & then inflated data matches the original |
| * data. |
| */ |
| public class FlaterTest extends Thread { |
| private static final int DATA_LEN = 1024 * 128; |
| private static byte[] data; |
| |
| // If true, print extra info. |
| private static final boolean debug = false; |
| |
| // Set of Flater threads running. |
| private static Set flaters = |
| Collections.synchronizedSet(new HashSet()); |
| |
| /** Fill in {@code data} with random values. */ |
| static void createData() { |
| ByteBuffer bb = ByteBuffer.allocate(8); |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| for (int i = 0; i < DATA_LEN; i++) { |
| bb.putDouble(0, Math.random()); |
| baos.write(bb.array(), 0, 8); |
| } |
| data = baos.toByteArray(); |
| if (debug) System.out.println("data length is " + data.length); |
| } |
| |
| /** @return the length of the deflated {@code data}. */ |
| private static int getDeflatedLength() throws Throwable { |
| int rc = 0; |
| Deflater deflater = new Deflater(); |
| deflater.setInput(data); |
| deflater.finish(); |
| byte[] out = new byte[data.length]; |
| rc = deflater.deflate(out); |
| deflater.end(); |
| if (debug) System.out.println("deflatedLength is " + rc); |
| return rc; |
| } |
| |
| /** Compares given bytes with those in {@code data}. |
| * @throws Exception if given bytes don't match {@code data}. |
| */ |
| private static void validate(byte[] buf, int offset, int len) throws Exception { |
| for (int i = 0; i < len; i++ ) { |
| if (buf[i] != data[offset+i]) { |
| throw new Exception("mismatch at " + (offset + i)); |
| } |
| } |
| } |
| |
| public static void realMain(String[] args) throws Throwable { |
| createData(); |
| int numThreads = args.length > 0 ? Integer.parseInt(args[0]) : 5; |
| new FlaterTest().go(numThreads); |
| } |
| |
| private synchronized void go(int numThreads) throws Throwable { |
| int deflatedLength = getDeflatedLength(); |
| |
| long time = System.currentTimeMillis(); |
| for (int i = 0; i < numThreads; i++) { |
| Flater f = new Flater(deflatedLength); |
| flaters.add(f); |
| f.start(); |
| } |
| while (flaters.size() != 0) { |
| try { |
| Thread.currentThread().sleep(10); |
| } catch (InterruptedException ex) { |
| unexpected(ex); |
| } |
| } |
| time = System.currentTimeMillis() - time; |
| System.out.println("Time needed for " + numThreads |
| + " threads to deflate/inflate: " + time + " ms."); |
| } |
| |
| /** Deflates and inflates data. */ |
| static class Flater extends Thread { |
| private final int deflatedLength; |
| |
| private Flater(int length) { |
| this.deflatedLength = length; |
| } |
| |
| /** Deflates and inflates {@code data}. */ |
| public void run() { |
| if (debug) System.out.println(getName() + " starting run()"); |
| try { |
| byte[] deflated = DeflateData(deflatedLength); |
| InflateData(deflated); |
| } catch (Throwable t) { |
| t.printStackTrace(); |
| fail(getName() + " failed"); |
| } finally { |
| flaters.remove(this); |
| } |
| } |
| |
| /** Returns a copy of {@code data} in deflated form. */ |
| private byte[] DeflateData(int length) throws Throwable { |
| Deflater deflater = new Deflater(); |
| deflater.setInput(data); |
| deflater.finish(); |
| byte[] out = new byte[length]; |
| deflater.deflate(out); |
| return out; |
| } |
| |
| /** Inflate a byte array, comparing it with {@code data} during |
| * inflation. |
| * @throws Exception if inflated bytes don't match {@code data}. |
| */ |
| private void InflateData(byte[] bytes) throws Throwable { |
| Inflater inflater = new Inflater(); |
| inflater.setInput(bytes, 0, bytes.length); |
| int len = 1024 * 8; |
| int offset = 0; |
| while (inflater.getRemaining() > 0) { |
| byte[] buf = new byte[len]; |
| int inflated = inflater.inflate(buf, 0, len); |
| validate(buf, offset, inflated); |
| offset += inflated; |
| } |
| } |
| } |
| |
| //--------------------- 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.println("\nPassed = " + passed + " failed = " + failed); |
| if (failed > 0) throw new AssertionError("Some tests failed");} |
| } |