| /* |
| * Copyright (c) 2003, 2011, 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 com.sun.management; |
| |
| /** |
| * Platform-specific management interface for the operating system |
| * on which the Java virtual machine is running. |
| * |
| * <p> |
| * The <tt>OperatingSystemMXBean</tt> object returned by |
| * {@link java.lang.management.ManagementFactory#getOperatingSystemMXBean()} |
| * is an instance of the implementation class of this interface |
| * or {@link UnixOperatingSystemMXBean} interface depending on |
| * its underlying operating system. |
| * |
| * @author Mandy Chung |
| * @since 1.5 |
| */ |
| @jdk.Exported |
| public interface OperatingSystemMXBean extends |
| java.lang.management.OperatingSystemMXBean { |
| |
| /** |
| * Returns the amount of virtual memory that is guaranteed to |
| * be available to the running process in bytes, |
| * or <tt>-1</tt> if this operation is not supported. |
| * |
| * @return the amount of virtual memory that is guaranteed to |
| * be available to the running process in bytes, |
| * or <tt>-1</tt> if this operation is not supported. |
| */ |
| public long getCommittedVirtualMemorySize(); |
| |
| /** |
| * Returns the total amount of swap space in bytes. |
| * |
| * @return the total amount of swap space in bytes. |
| */ |
| public long getTotalSwapSpaceSize(); |
| |
| /** |
| * Returns the amount of free swap space in bytes. |
| * |
| * @return the amount of free swap space in bytes. |
| */ |
| public long getFreeSwapSpaceSize(); |
| |
| /** |
| * Returns the CPU time used by the process on which the Java |
| * virtual machine is running in nanoseconds. The returned value |
| * is of nanoseconds precision but not necessarily nanoseconds |
| * accuracy. This method returns <tt>-1</tt> if the |
| * the platform does not support this operation. |
| * |
| * @return the CPU time used by the process in nanoseconds, |
| * or <tt>-1</tt> if this operation is not supported. |
| */ |
| public long getProcessCpuTime(); |
| |
| /** |
| * Returns the amount of free physical memory in bytes. |
| * |
| * @return the amount of free physical memory in bytes. |
| */ |
| public long getFreePhysicalMemorySize(); |
| |
| /** |
| * Returns the total amount of physical memory in bytes. |
| * |
| * @return the total amount of physical memory in bytes. |
| */ |
| public long getTotalPhysicalMemorySize(); |
| |
| /** |
| * Returns the "recent cpu usage" for the whole system. This value is a |
| * double in the [0.0,1.0] interval. A value of 0.0 means that all CPUs |
| * were idle during the recent period of time observed, while a value |
| * of 1.0 means that all CPUs were actively running 100% of the time |
| * during the recent period being observed. All values betweens 0.0 and |
| * 1.0 are possible depending of the activities going on in the system. |
| * If the system recent cpu usage is not available, the method returns a |
| * negative value. |
| * |
| * @return the "recent cpu usage" for the whole system; a negative |
| * value if not available. |
| * @since 1.7 |
| */ |
| public double getSystemCpuLoad(); |
| |
| /** |
| * Returns the "recent cpu usage" for the Java Virtual Machine process. |
| * This value is a double in the [0.0,1.0] interval. A value of 0.0 means |
| * that none of the CPUs were running threads from the JVM process during |
| * the recent period of time observed, while a value of 1.0 means that all |
| * CPUs were actively running threads from the JVM 100% of the time |
| * during the recent period being observed. Threads from the JVM include |
| * the application threads as well as the JVM internal threads. All values |
| * betweens 0.0 and 1.0 are possible depending of the activities going on |
| * in the JVM process and the whole system. If the Java Virtual Machine |
| * recent CPU usage is not available, the method returns a negative value. |
| * |
| * @return the "recent cpu usage" for the Java Virtual Machine process; |
| * a negative value if not available. |
| * @since 1.7 |
| */ |
| public double getProcessCpuLoad(); |
| |
| } |