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 }