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/*
* 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");
}
}
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