1 /* |
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2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 package sun.management; |
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27 |
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28 import com.sun.management.OperatingSystemMXBean; |
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29 |
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30 /** |
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31 * Implementation class for the operating system. |
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32 * Standard and committed hotspot-specific metrics if any. |
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33 * |
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34 * ManagementFactory.getOperatingSystemMXBean() returns an instance |
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35 * of this class. |
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36 */ |
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37 class OperatingSystemImpl extends BaseOperatingSystemImpl |
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38 implements OperatingSystemMXBean { |
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39 |
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40 // psapiLock is a lock to make sure only one thread loading |
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41 // PSAPI DLL. |
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42 private static Object psapiLock = new Object(); |
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43 |
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44 OperatingSystemImpl(VMManagement vm) { |
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45 super(vm); |
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46 } |
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47 |
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48 public long getCommittedVirtualMemorySize() { |
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49 synchronized (psapiLock) { |
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50 return getCommittedVirtualMemorySize0(); |
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51 } |
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52 } |
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53 |
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54 public long getTotalSwapSpaceSize() { |
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55 return getTotalSwapSpaceSize0(); |
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56 } |
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57 |
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58 public long getFreeSwapSpaceSize() { |
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59 return getFreeSwapSpaceSize0(); |
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60 } |
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61 |
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62 public long getProcessCpuTime() { |
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63 return getProcessCpuTime0(); |
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64 } |
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65 |
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66 public long getFreePhysicalMemorySize() { |
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67 return getFreePhysicalMemorySize0(); |
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68 } |
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69 |
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70 public long getTotalPhysicalMemorySize() { |
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71 return getTotalPhysicalMemorySize0(); |
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72 } |
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73 |
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74 public double getSystemCpuLoad() { |
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75 return getSystemCpuLoad0(); |
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76 } |
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77 |
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78 public double getProcessCpuLoad() { |
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79 return getProcessCpuLoad0(); |
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80 } |
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81 |
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82 /* native methods */ |
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83 private native long getCommittedVirtualMemorySize0(); |
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84 private native long getFreePhysicalMemorySize0(); |
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85 private native long getFreeSwapSpaceSize0(); |
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86 private native double getProcessCpuLoad0(); |
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87 private native long getProcessCpuTime0(); |
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88 private native double getSystemCpuLoad0(); |
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89 private native long getTotalPhysicalMemorySize0(); |
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90 private native long getTotalSwapSpaceSize0(); |
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91 |
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92 static { |
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93 initialize0(); |
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94 } |
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95 |
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96 private static native void initialize0(); |
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97 } |
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