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Java > Open Source Codes > com > caucho > server > util > JniCauchoSystem


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  *
23  * Free Software Foundation, Inc.
24  * 59 Temple Place, Suite 330
25  * Boston, MA 02111-1307 USA
26  *
27  * @author Scott Ferguson
28  */
29
30 package com.caucho.server.util;
31
32 import java.util.logging.Level JavaDoc;
33 import java.util.logging.Logger JavaDoc;
34
35 /**
36  * A wrapper for Caucho system variables, allowing tests to override
37  * the default variables.
38  */
39 public class JniCauchoSystem {
40   private static Logger JavaDoc log
41     = Logger.getLogger(JniCauchoSystem.class.getName());
42
43   private static JniCauchoSystem _system;
44
45   protected JniCauchoSystem()
46   {
47   }
48
49   public static JniCauchoSystem create()
50   {
51     synchronized (JniCauchoSystem.class) {
52       if (_system == null) {
53     try {
54       Class JavaDoc cl = Class.forName("com.caucho.server.util.JniCauchoSystemImpl");
55
56       _system = (JniCauchoSystem) cl.newInstance();
57     } catch (Throwable JavaDoc e) {
58       log.log(Level.FINEST, e.toString(), e);
59     }
60
61     if (_system == null)
62       _system = new JniCauchoSystem();
63       }
64
65       return _system;
66     }
67   }
68
69   /**
70    * Returns true if we're currently running a test.
71    */
72   public double getLoadAvg()
73   {
74     return 0;
75   }
76 }
77
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