1 /*
   2  * Copyright (c) 2003, 2004, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.management;
  27 
  28 import java.lang.management.OperatingSystemMXBean;
  29 import sun.management.VMManagement;
  30 
  31 /**
  32  * Operating system dependent MBean factory.
  33  * <p>
  34  * <b>WARNING:</b> While this class is public, it should not be treated as
  35  * public API and its API may change in incompatable ways between dot dot
  36  * releases and even patch releases. You should not rely on this class.
  37  */
  38 public class OSMBeanFactory {
  39     /* static factory class */
  40     private OSMBeanFactory() {};
  41 
  42     private static OperatingSystem osMBean = null;
  43 
  44     public static synchronized OperatingSystemMXBean
  45         getOperatingSystemMXBean(VMManagement jvm) {
  46 
  47         if (osMBean == null) {
  48             osMBean = new OperatingSystem(jvm);
  49         }
  50         return (OperatingSystemMXBean) osMBean;
  51     }
  52 }