| /* |
| * Copyright (c) 2010, 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 4517279 |
| * @summary Stochastic test of thread-local coder caches |
| * @key randomness |
| */ |
| |
| import java.nio.*; |
| import java.nio.charset.*; |
| import java.util.*; |
| |
| |
| public class BashCache { |
| |
| private static final int THREADS = 10; |
| private static final int TRIALS = 1000; |
| |
| private static final Charset[] charsets |
| = new Charset[] { |
| Charset.forName("US-ASCII"), |
| Charset.forName("UTF-8"), |
| Charset.forName("CP1252"), |
| Charset.forName("UTF-16BE") }; |
| |
| private static volatile boolean failed = false; |
| |
| private static class Basher extends Thread { |
| |
| Random rnd = new Random(System.identityHashCode(this)); |
| |
| public void run() { |
| for (int i = 0; i < TRIALS; i++) { |
| Charset cs = charsets[rnd.nextInt(4)]; |
| try { |
| if (rnd.nextBoolean()) { |
| cs.encode("hi mom"); |
| } else { |
| cs.decode(ByteBuffer.wrap(new byte[] { |
| (byte)'x', (byte)'y', |
| (byte)'z', (byte)'z', |
| (byte)'y' })); |
| } |
| } catch (Exception x) { |
| x.printStackTrace(); |
| failed = true; |
| return; |
| } |
| if (rnd.nextBoolean()) |
| Thread.yield(); |
| } |
| } |
| |
| } |
| |
| public static void main(String[] args) throws Exception { |
| Charset cs = Charset.forName("us-ascii"); |
| Basher[] bashers = new Basher[THREADS]; |
| for (int i = 0; i < THREADS; i++) { |
| bashers[i] = new Basher(); |
| bashers[i].start(); |
| } |
| for (int i = 0; i < THREADS; i++) |
| bashers[i].join(); |
| if (failed) |
| throw new Exception("Test failed"); |
| } |
| |
| } |