/*
* eXist Open Source Native XML Database
* Copyright (C) 2010 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.commands.threads;
import java.util.Map;
import org.exist.plugin.command.AbstractCommand;
import org.exist.plugin.command.CommandException;
import org.exist.storage.lock.DeadlockDetection;
import org.exist.storage.lock.LockInfo;
import org.exist.xmldb.XmldbURI;
/**
* @author <a href="mailto:shabanovd@gmail.com">Dmitriy Shabanov</a>
*
*/
public class Deadlock extends AbstractCommand {
public Deadlock() {
names = new String[] {"deadlock", "dl"};
}
/* (non-Javadoc)
* @see org.exist.plugin.command.AbstractCommand#process(org.exist.xmldb.XmldbURI, java.lang.String[])
*/
@Override
public void process(XmldbURI collection, String[] commandData) throws CommandException {
Map<String, LockInfo> threads = DeadlockDetection.getWaitingThreads();
for (Map.Entry<String, LockInfo> entry : threads.entrySet()) {
LockInfo info = entry.getValue();
out().println("THREAD: " + entry.getKey());
if (info != null) {
info.debug(out());
}
}
if (threads.isEmpty())
out().println("No waiting threads.");
}
}