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/* * Copyright (c) 2003, 2008, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package sun.management; import java.lang.management.OperatingSystemMXBean;import java.lang.management.ManagementFactory;import javax.management.ObjectName;import sun.misc.Unsafe; /** * Implementation class for the operating system. * Standard and committed hotspot-specific metrics if any. * * ManagementFactory.getOperatingSystemMXBean() returns an instance * of this class. */public class OperatingSystemImpl implements OperatingSystemMXBean {     private final VMManagement jvm;     /**     * Constructor of OperatingSystemImpl class.     */    protected OperatingSystemImpl(VMManagement vm) {        this.jvm = vm;    }     public String getName() {        return jvm.getOsName();    }     public String getArch() {        return jvm.getOsArch();    }     public String getVersion() {        return jvm.getOsVersion();    }     public int getAvailableProcessors() {        return jvm.getAvailableProcessors();    }     private static final Unsafe unsafe = Unsafe.getUnsafe();    private double[] loadavg = new double[1];    public double getSystemLoadAverage() {        if (unsafe.getLoadAverage(loadavg, 1) == 1) {             return loadavg[0];        } else {             return -1.0;        }    }    public ObjectName getObjectName() {        return Util.newObjectName(ManagementFactory.OPERATING_SYSTEM_MXBEAN_NAME);    } }