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1 /* |
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2 * Copyright (c) 2003, 2004, 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.counter.perf; |
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27 |
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28 import sun.management.counter.*; |
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29 import java.nio.*; |
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30 |
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31 public class PerfByteArrayCounter extends AbstractCounter |
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32 implements ByteArrayCounter { |
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33 |
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34 ByteBuffer bb; |
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35 |
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36 PerfByteArrayCounter(String name, Units u, Variability v, |
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37 int flags, int vectorLength, |
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38 ByteBuffer bb) { |
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39 |
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40 super(name, u, v, flags, vectorLength); |
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41 this.bb = bb; |
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42 } |
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43 |
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44 public Object getValue() { |
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45 return byteArrayValue(); |
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46 } |
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47 |
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48 /** |
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49 * Get a copy of the elements of the ByteArrayCounter. |
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50 */ |
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51 public byte[] byteArrayValue() { |
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52 |
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53 bb.position(0); |
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54 byte[] b = new byte[bb.limit()]; |
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55 |
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56 // copy the bytes |
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57 bb.get(b); |
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58 |
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59 return b; |
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60 } |
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61 |
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62 /** |
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63 * Get the value of an element of the ByteArrayCounter object. |
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64 */ |
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65 public byte byteAt(int index) { |
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66 bb.position(index); |
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67 return bb.get(); |
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68 } |
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69 |
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70 public String toString() { |
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71 String result = getName() + ": " + new String(byteArrayValue()) + |
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72 " " + getUnits(); |
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73 if (isInternal()) { |
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74 return result + " [INTERNAL]"; |
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75 } else { |
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76 return result; |
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77 } |
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78 } |
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79 |
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80 /** |
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81 * Serialize as a snapshot object. |
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82 */ |
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83 protected Object writeReplace() throws java.io.ObjectStreamException { |
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84 return new ByteArrayCounterSnapshot(getName(), |
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85 getUnits(), |
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86 getVariability(), |
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87 getFlags(), |
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88 getVectorLength(), |
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89 byteArrayValue()); |
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90 } |
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91 |
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92 private static final long serialVersionUID = 2545474036937279921L; |
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93 } |