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annotate graal/com.oracle.jvmci.code/src/com/oracle/jvmci/code/InstalledCode.java @ 21730:b9f9b8af17ff

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Simplify interface to reference map
author Tom Rodriguez <tom.rodriguez@oracle.com>
date Wed, 03 Jun 2015 19:57:38 -0700
parents 48c1ebd24120
children
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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 com.oracle.jvmci.code;
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24
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25 /**
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26 * Represents a compiled instance of a method. It may have been invalidated or removed in the
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27 * meantime.
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28 */
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29 public class InstalledCode {
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31 /**
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32 * Raw address of this code blob.
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33 */
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34 private long address;
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35
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36 /**
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37 * Counts how often the address field was reassigned.
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38 */
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39 private long version;
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40
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41 protected final String name;
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43 public InstalledCode(String name) {
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44 this.name = name;
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45 }
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46
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47 public final void setAddress(long address) {
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48 this.address = address;
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49 version++;
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50 }
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51
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52 /**
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53 * @return the address of this code blob
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54 */
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55 public final long getAddress() {
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56 return address;
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57 }
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58
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59 /**
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60 * @return the address of this code blob
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61 */
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62 public final long getVersion() {
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63 return version;
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64 }
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65
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66 /**
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67 * Returns the name of this code blob.
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68 */
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69 public String getName() {
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70 return name;
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71 }
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72
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73 /**
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74 * Returns the start address of this installed code if it is {@linkplain #isValid() valid}, 0
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75 * otherwise.
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76 */
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77 public long getStart() {
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78 return 0;
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79 }
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80
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81 /**
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82 * Returns the number of instruction bytes for this code.
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83 */
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84 public long getCodeSize() {
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85 return 0;
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86 }
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87
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88 /**
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89 * Returns a copy of this installed code if it is {@linkplain #isValid() valid}, null otherwise.
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90 */
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91 public byte[] getCode() {
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92 return null;
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93 }
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94
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95 /**
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96 * @return true if the code represented by this object is still valid, false otherwise (may
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97 * happen due to deopt, etc.)
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98 */
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99 public boolean isValid() {
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100 return address != 0;
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101 }
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102
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103 /**
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104 * Invalidates this installed code such that any subsequent invocation will throw an
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105 * {@link InvalidInstalledCodeException}.
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106 */
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107 public void invalidate() {
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108 throw new UnsupportedOperationException();
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109 }
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110
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111 /**
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112 * Executes the installed code with a variable number of arguments.
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113 *
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114 * @param args the array of object arguments
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115 * @return the value returned by the executed code
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116 */
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117 @SuppressWarnings("unused")
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118 public Object executeVarargs(Object... args) throws InvalidInstalledCodeException {
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119 throw new UnsupportedOperationException();
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120 }
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121 }