1 /* 2 * Copyright (c) 2003, 2011, 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 sun.management.VMManagement; 29 30 /** 31 * Implementation class for the operating system. 32 * Standard and committed hotspot-specific metrics if any. 33 * 34 * ManagementFactory.getOperatingSystemMXBean() returns an instance 35 * of this class. 36 */ 37 class UnixOperatingSystem 38 extends sun.management.OperatingSystemImpl 39 implements UnixOperatingSystemMXBean { 40 41 UnixOperatingSystem(VMManagement vm) { 42 super(vm); 43 } 44 45 public native long getCommittedVirtualMemorySize(); 46 public native long getTotalSwapSpaceSize(); 47 public native long getFreeSwapSpaceSize(); 48 public native long getProcessCpuTime(); 49 public native long getFreePhysicalMemorySize(); 50 public native long getTotalPhysicalMemorySize(); 51 public native long getOpenFileDescriptorCount(); 52 public native long getMaxFileDescriptorCount(); 53 public native double getSystemCpuLoad(); 54 public native double getProcessCpuLoad(); 55 56 static { 57 initialize(); 58 } 59 private static native void initialize(); 60 }