114 lines
3.6 KiB
Java
114 lines
3.6 KiB
Java
/*
|
|
* Copyright (c) 2012, 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 8005281
|
|
* @summary Test that the Properties storeToXML and loadFromXML methods are
|
|
* thread safe
|
|
* @key randomness
|
|
*/
|
|
|
|
import java.io.*;
|
|
import java.util.Properties;
|
|
import java.util.Random;
|
|
import java.util.concurrent.Callable;
|
|
import java.util.concurrent.Executors;
|
|
import java.util.concurrent.ExecutorService;
|
|
import java.util.concurrent.Future;
|
|
|
|
public class ConcurrentLoadAndStoreXML {
|
|
|
|
static final Random RAND = new Random();
|
|
|
|
static volatile boolean done;
|
|
|
|
/**
|
|
* Simple task that bashes on storeToXML and loadFromXML until the "done"
|
|
* flag is set.
|
|
*/
|
|
static class Basher implements Callable<Void> {
|
|
final Properties props;
|
|
|
|
Basher(Properties props) {
|
|
this.props = props;
|
|
}
|
|
|
|
public Void call() throws IOException {
|
|
while (!done) {
|
|
|
|
// store as XML format
|
|
ByteArrayOutputStream out = new ByteArrayOutputStream();
|
|
props.storeToXML(out, null, "UTF-8");
|
|
|
|
// load from XML format
|
|
Properties p = new Properties();
|
|
ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
|
|
p.loadFromXML(in);
|
|
|
|
// check that the properties are as expected
|
|
if (!p.equals(props))
|
|
throw new RuntimeException("Properties not equal");
|
|
}
|
|
return null;
|
|
}
|
|
}
|
|
|
|
public static void main(String[] args) throws Exception {
|
|
final int NTASKS = 4 + RAND.nextInt(4);
|
|
|
|
// create Bashers with Properties of random keys and values
|
|
Basher[] basher = new Basher[NTASKS];
|
|
for (int i=0; i<NTASKS; i++) {
|
|
Properties props = new Properties();
|
|
for (int j=0; j<RAND.nextInt(100); j++) {
|
|
String key = "k" + RAND.nextInt(1000);
|
|
String value = "v" + RAND.nextInt(1000);
|
|
props.put(key, value);
|
|
}
|
|
basher[i] = new Basher(props);
|
|
}
|
|
|
|
ExecutorService pool = Executors.newFixedThreadPool(NTASKS);
|
|
try {
|
|
// kick off the bashers
|
|
Future<Void>[] task = new Future[NTASKS];
|
|
for (int i=0; i<NTASKS; i++) {
|
|
task[i] = pool.submit(basher[i]);
|
|
}
|
|
|
|
// give them time to interfere with each other
|
|
Thread.sleep(2000);
|
|
done = true;
|
|
|
|
// check the result
|
|
for (int i=0; i<NTASKS; i++) {
|
|
task[i].get();
|
|
}
|
|
} finally {
|
|
done = true;
|
|
pool.shutdown();
|
|
}
|
|
|
|
}
|
|
}
|