/protocols/ss7/m3ua/impl/src/main/java/org/mobicents/protocols/ss7/m3ua/impl/scheduler/M3UAScheduler.java

 1/*
 2 * JBoss, Home of Professional Open Source
 3 * Copyright 2011, Red Hat, Inc. and individual contributors
 4 * by the @authors tag. See the copyright.txt in the distribution for a
 5 * full listing of individual contributors.
 6 *
 7 * This is free software; you can redistribute it and/or modify it
 8 * under the terms of the GNU Lesser General Public License as
 9 * published by the Free Software Foundation; either version 2.1 of
10 * the License, or (at your option) any later version.
11 *
12 * This software is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this software; if not, write to the Free
19 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21 */
22
23package org.mobicents.protocols.ss7.m3ua.impl.scheduler;
24
25import javolution.util.FastList;
26
27import org.apache.log4j.Logger;
28
29/**
30 * 
31 * @author amit bhayani
32 * 
33 */
34public class M3UAScheduler implements Runnable {
35	private static final Logger logger = Logger.getLogger(M3UAScheduler.class);
36
37	// TODO : Synchronize tasks? Use Iterator?
38	protected FastList<M3UATask> tasks = new FastList<M3UATask>();
39
40	public void execute(M3UATask task) {
41		if(task == null){
42			return;
43		}
44		this.tasks.add(task);
45	}
46
47	public void run() {
48		long now = System.currentTimeMillis();
49		for (FastList.Node<M3UATask> n = tasks.head(), end = tasks.tail(); (n = n.getNext()) != end;) {
50			M3UATask task = n.getValue();
51			// check if has been canceled from different thread.
52			if (task.canceled) {
53				tasks.remove(task);
54			} else {
55
56				try {
57					task.run(now);
58				} catch (Exception e) {
59					if (logger.isDebugEnabled()) {
60						logger.debug("Failuer on task run.", e);
61					}
62				}
63				// check if its canceled after run;
64				if (task.canceled) {
65					tasks.remove(task);
66				}
67			}
68			// tempTask = null;
69		}
70	}
71}