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/*
* Copyright 2003-2008 Sun Microsystems, Inc. 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. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.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);
}
}
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