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annotate jvmci/jdk.internal.jvmci.hotspot/src/jdk/internal/jvmci/hotspot/HotSpotInstalledCode.java @ 22542:15579668ec3a

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renamed constant field to UNSAFE
author Doug Simon <doug.simon@oracle.com>
date Wed, 09 Sep 2015 15:27:45 +0200
parents d2035d841611
children 456800cd1a17
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1 /*
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2 * Copyright (c) 2011, 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.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package jdk.internal.jvmci.hotspot;
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24
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25 import static jdk.internal.jvmci.hotspot.UnsafeAccess.UNSAFE;
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26 import jdk.internal.jvmci.code.InstalledCode;
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27 import jdk.internal.jvmci.inittimer.SuppressFBWarnings;
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28 import sun.misc.Unsafe;
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29
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30 /**
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31 * Implementation of {@link InstalledCode} for HotSpot.
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32 */
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33 public abstract class HotSpotInstalledCode extends InstalledCode {
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34
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35 /**
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36 * Total size of the code blob.
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37 */
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38 @SuppressFBWarnings(value = "UWF_UNWRITTEN_FIELD", justification = "field is set by the native part") private int size;
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39
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40 /**
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41 * Start address of the code.
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42 */
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43 @SuppressFBWarnings(value = "UWF_UNWRITTEN_FIELD", justification = "field is set by the native part") private long codeStart;
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44
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45 /**
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46 * Size of the code.
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47 */
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48 @SuppressFBWarnings(value = "UWF_UNWRITTEN_FIELD", justification = "field is set by the native part") private int codeSize;
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49
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50 public HotSpotInstalledCode(String name) {
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51 super(name);
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52 }
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53
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54 /**
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55 * @return the total size of this code blob
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56 */
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57 public int getSize() {
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58 return size;
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59 }
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60
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61 /**
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62 * @return a copy of this code blob if it is {@linkplain #isValid() valid}, null otherwise.
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63 */
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64 public byte[] getBlob() {
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65 if (!isValid()) {
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66 return null;
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67 }
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68 byte[] blob = new byte[size];
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69 UNSAFE.copyMemory(null, getAddress(), blob, Unsafe.ARRAY_BYTE_BASE_OFFSET, size);
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70 return blob;
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71 }
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72
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73 @Override
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74 public abstract String toString();
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75
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76 @Override
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77 public long getStart() {
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78 return codeStart;
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79 }
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80
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81 @Override
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82 public long getCodeSize() {
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83 return codeSize;
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84 }
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85
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86 @Override
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87 public byte[] getCode() {
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88 if (!isValid()) {
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89 return null;
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90 }
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91 byte[] code = new byte[codeSize];
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92 UNSAFE.copyMemory(null, codeStart, code, Unsafe.ARRAY_BYTE_BASE_OFFSET, codeSize);
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93 return code;
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94 }
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95 }