| /******************************************************************************* |
| * Copyright (c) 2006 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.update.internal.core; |
| |
| import java.util.Hashtable; |
| |
| /** |
| * @author aniefer |
| * |
| */ |
| public class LockManager { |
| // lock |
| private final static Object lock = new Object(); |
| |
| // hashtable of locks |
| private static Hashtable locks = new Hashtable(); |
| |
| public static Object getLock(String key) { |
| synchronized (lock) { |
| if (locks.get(key) == null) |
| locks.put(key, key); |
| return locks.get(key); |
| } |
| } |
| |
| public static void returnLock(String key) { |
| synchronized (lock) { |
| locks.remove(key); |
| } |
| } |
| } |