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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/ProbeFailure.java @ 19869:1d6a7ea5de59
Truffle/Instrumentation: remove support for "probe-lite", an optimization for a particular use case that no longer seems worth the complexity.
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
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date | Mon, 16 Mar 2015 15:59:57 -0700 |
parents | 867058575979 |
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1 /* |
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2 * Copyright (c) 2015, 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 package com.oracle.truffle.api.instrument; |
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26 |
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27 import com.oracle.truffle.api.instrument.ProbeNode.WrapperNode; |
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28 import com.oracle.truffle.api.nodes.*; |
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29 import com.oracle.truffle.api.nodes.NodeUtil.NodeField; |
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30 |
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31 /** |
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32 * Description of a failed attempt to instrument an AST node. |
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33 */ |
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34 public final class ProbeFailure { |
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35 |
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36 public enum Reason { |
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37 |
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38 /** |
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39 * Node to be probed has no parent. |
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40 */ |
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41 NO_PARENT("Node to be probed has no parent"), |
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42 |
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43 /** |
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44 * The node to be probed is a wrapper. |
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45 */ |
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46 WRAPPER_NODE("The node to be probed is a wrapper"), |
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47 |
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48 /** |
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49 * The node to be probed returned {@link Node#isInstrumentable()}{@code == false}. |
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50 */ |
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51 NOT_INSTRUMENTABLE("The node to be project is \"not instrumentable\""), |
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52 |
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53 /** |
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54 * No wrapper could be created that is also a {@link Node}. |
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55 */ |
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56 NO_WRAPPER("No wrapper could be created"), |
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57 |
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58 /** |
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59 * Wrapper not assignable to the parent's child field. |
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60 */ |
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61 WRAPPER_TYPE("Wrapper not assignable to parent's child field"); |
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62 |
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63 final String message; |
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64 |
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65 private Reason(String message) { |
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66 this.message = message; |
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67 } |
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68 |
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69 public String getMessage() { |
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70 return message; |
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71 } |
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72 } |
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73 |
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74 private final Reason reason; |
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75 private final Node parent; |
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76 private final Node child; |
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77 private final Object wrapper; |
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78 |
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79 /** |
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80 * Description of an internal failure of {@link Node#probe()}. |
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81 * |
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82 * @param reason what caused the failure |
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83 * @param parent the parent, if known, of the child being probed |
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84 * @param child this child being probed |
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85 * @param wrapper the {@link WrapperNode} created to implement the probe |
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86 */ |
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87 public ProbeFailure(Reason reason, Node parent, Node child, Object wrapper) { |
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88 this.reason = reason; |
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89 this.parent = parent; |
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90 this.child = child; |
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91 this.wrapper = wrapper; |
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92 } |
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93 |
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94 /** |
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95 * @return a short explanation of the failure |
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96 */ |
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97 public Reason getReason() { |
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98 return reason; |
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99 } |
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100 |
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101 /** |
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102 * @return the parent, if any, of the node being probed |
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103 */ |
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104 public Node getParent() { |
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105 return parent; |
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106 } |
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107 |
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108 /** |
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109 * @return the node being probed |
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110 */ |
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111 public Node getChild() { |
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112 return child; |
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113 } |
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114 |
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115 /** |
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116 * @return the {@link WrapperNode} created for the probe attempt |
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117 */ |
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118 public Object getWrapper() { |
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119 return wrapper; |
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120 } |
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121 |
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122 public String getMessage() { |
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123 final StringBuilder sb = new StringBuilder(reason.message + ": "); |
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124 if (parent != null) { |
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125 sb.append("parent=" + parent.getClass().getSimpleName() + " "); |
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126 if (child != null) { |
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127 sb.append("child=" + child.getClass().getSimpleName() + " "); |
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128 final NodeField field = NodeUtil.findChildField(parent, child); |
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129 if (field != null) { |
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130 sb.append("field=" + field.getName() + " "); |
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131 } |
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132 } |
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133 } |
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134 if (wrapper != null) { |
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135 sb.append("wrapper=" + wrapper.getClass().getSimpleName()); |
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136 } |
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137 return sb.toString(); |
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138 } |
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139 |
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140 } |