/*
* eXist Open Source Native XML Database
* Copyright (C) 2001-04 The eXist Project
* http://exist-db.org
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id$
*/
package org.exist.xmldb.concurrent;
import junit.framework.TestCase;
import junit.textui.TestRunner;
import org.exist.xmldb.DatabaseInstanceManager;
import org.exist.xmldb.XmldbURI;
import org.xmldb.api.DatabaseManager;
import org.xmldb.api.base.Collection;
import org.xmldb.api.base.Database;
import org.xmldb.api.modules.XMLResource;
public class DeadlockTest extends TestCase {
public static final String DOCUMENT_CONTENT = "<document>\n"
+ " <element1>value1</element1>\n"
+ " <element2>value2</element2>\n"
+ " <element3>value3</element3>\n"
+ " <element4>value4</element4>\n" + "</document>\n";
private String rootCollection = XmldbURI.LOCAL_DB;
private Collection root;
public void testDeadlock() {
int threads = 20;
int resources = 200;
try {
Thread[] writerThreads = new Thread[threads];
for (int i = 0; i < threads; i++) {
writerThreads[i] = new WriterThread(rootCollection, resources);
writerThreads[i].setName("T" + i);
writerThreads[i].start();
}
for (int i = 0; i < threads; i++) {
writerThreads[i].join();
}
} catch (Exception e) {
fail(e.getMessage());
}
}
protected void setUp() {
try {
String driver = "org.exist.xmldb.DatabaseImpl";
Class<?> cl = Class.forName(driver);
Database database = (Database) cl.newInstance();
assertNotNull(database);
database.setProperty("create-database", "true");
DatabaseManager.registerDatabase(database);
root = DatabaseManager.getCollection(rootCollection, "admin", "");
assertNotNull(root);
} catch (Exception e) {
fail(e.getMessage());
}
}
protected void tearDown() {
try {
DatabaseInstanceManager manager =
(DatabaseInstanceManager) root.getService("DatabaseInstanceManager", "1.0");
assertNotNull(manager);
manager.shutdown();
} catch (Exception e) {
fail(e.getMessage());
}
}
public static void main(String args[]) {
TestRunner.run(DeadlockTest.class);
}
public static class WriterThread extends Thread {
protected Collection collection = null;
protected int resources = 0;
public WriterThread(String collectionURI, int resources) throws Exception {
this.collection = DatabaseManager.getCollection(collectionURI);
this.resources = resources;
}
public void run() {
try {
for (int i = 0; i < resources; i++) {
XMLResource document = (XMLResource) collection
.createResource(Thread.currentThread().getName()
+ "_" + i, "XMLResource");
document.setContent(DOCUMENT_CONTENT);
System.out.print("storing document " + document.getId()
+ "\n");
collection.storeResource(document);
}
} catch (Exception e) {
System.err.println("Writer " + Thread.currentThread().getName()
+ " failed: " + e);
e.printStackTrace();
}
}
}
}