/protocols/jain-mgcp/stack/src/main/java/org/mobicents/protocols/mgcp/parser/UtilsFactory.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.mgcp.parser;
24
25import java.util.ArrayList;
26import java.util.List;
27
28import org.apache.log4j.Logger;
29
30public class UtilsFactory {
31
32	private static final Logger logger = Logger.getLogger(UtilsFactory.class);
33
34	private List<Utils> list = new ArrayList<Utils>();
35	private int size = 0;
36	private int count = 0;
37
38	public UtilsFactory(int size) {
39		this.size = size;
40		for (int i = 0; i < size; i++) {
41			Utils utils = new Utils();
42			list.add(utils);
43		}
44	}
45
46	public Utils allocate() {
47		Utils utils = null;
48
49		if (!list.isEmpty()) {
50			utils = list.remove(0);
51			if (utils != null) {
52				return utils;
53			}
54		}
55
56		utils = new Utils();
57		count++;
58
59		if (logger.isInfoEnabled()) {
60			logger.info("UtilsFactory underflow. Better to increase the size of Utils count. Count = " + count);
61		}
62		return utils;
63	}
64
65	public void deallocate(Utils utils) {
66		if (list.size() < size && utils != null) {
67			list.add(utils);
68		}
69	}
70
71	public int getSize() {
72		return this.size;
73	}
74
75	public int getCount() {
76		return this.count;
77	}
78
79}