91 lines
2.9 KiB
Java
91 lines
2.9 KiB
Java
/*
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* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @bug 4517279
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* @summary Stochastic test of thread-local coder caches
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* @key randomness
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*/
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import java.nio.*;
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import java.nio.charset.*;
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import java.util.*;
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public class BashCache {
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private static final int THREADS = 10;
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private static final int TRIALS = 1000;
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private static final Charset[] charsets
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= new Charset[] {
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Charset.forName("US-ASCII"),
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Charset.forName("UTF-8"),
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Charset.forName("CP1252"),
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Charset.forName("UTF-16BE") };
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private static volatile boolean failed = false;
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private static class Basher extends Thread {
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Random rnd = new Random(System.identityHashCode(this));
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public void run() {
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for (int i = 0; i < TRIALS; i++) {
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Charset cs = charsets[rnd.nextInt(4)];
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try {
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if (rnd.nextBoolean()) {
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cs.encode("hi mom");
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} else {
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cs.decode(ByteBuffer.wrap(new byte[] {
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(byte)'x', (byte)'y',
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(byte)'z', (byte)'z',
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(byte)'y' }));
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}
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} catch (Exception x) {
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x.printStackTrace();
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failed = true;
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return;
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}
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if (rnd.nextBoolean())
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Thread.yield();
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}
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}
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}
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public static void main(String[] args) throws Exception {
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Charset cs = Charset.forName("us-ascii");
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Basher[] bashers = new Basher[THREADS];
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for (int i = 0; i < THREADS; i++) {
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bashers[i] = new Basher();
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bashers[i].start();
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}
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for (int i = 0; i < THREADS; i++)
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bashers[i].join();
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if (failed)
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throw new Exception("Test failed");
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}
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}
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