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annotate graal/com.oracle.graal.api.meta/src/com/oracle/graal/api/meta/AbstractJavaProfile.java @ 9760:c76b43ed5089

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Added infrastructure for recording invoked methods in the profiling information.
author Christian Haeubl <haeubl@ssw.jku.at>
date Fri, 17 May 2013 15:38:22 +0200
parents
children 89cbd0119dc5
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9760
c76b43ed5089 Added infrastructure for recording invoked methods in the profiling information.
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1 /*
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2 * Copyright (c) 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.
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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.graal.api.meta;
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24
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25 import java.io.*;
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26
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27 /**
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28 * This profile object represents a certain set of profiling information at a specific BCI. The
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29 * precision of the supplied values may vary, but a runtime that provides this information should be
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30 * aware that it will be used to guide performance-critical decisions like speculative inlining,
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31 * etc.
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32 */
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33 public abstract class AbstractJavaProfile<T extends AbstractProfiledItem<U>, U> implements Serializable {
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34
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35 private static final long serialVersionUID = 5493379044459116749L;
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36
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37 private final double notRecordedProbability;
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38 private final T[] pitems;
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39
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40 public AbstractJavaProfile(double notRecordedProbability, T[] pitems) {
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41 this.pitems = pitems;
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42 assert notRecordedProbability != Double.NaN;
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43 this.notRecordedProbability = notRecordedProbability;
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44 assert isSorted();
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45 }
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46
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47 /**
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48 * Determines if an array of profiled items are sorted in descending order of their
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49 * probabilities.
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50 */
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51 private boolean isSorted() {
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52 for (int i = 1; i < pitems.length; i++) {
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53 if (pitems[i - 1].getProbability() < pitems[i].getProbability()) {
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54 return false;
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55 }
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56 }
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57 return true;
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58 }
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59
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60 /**
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61 * Returns the estimated probability of all types that could not be recorded due to profiling
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62 * limitations.
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63 *
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64 * @return double value >= 0.0 and <= 1.0
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65 */
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66 public double getNotRecordedProbability() {
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67 return notRecordedProbability;
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68 }
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69
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70 protected T[] getItems() {
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71 return pitems;
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72 }
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73
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74 /**
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75 * Searches for an entry of a given resolved Java type.
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76 *
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77 * @param type the type for which an entry should be searched
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78 * @return the entry or null if no entry for this type can be found
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79 */
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80 public T findEntry(ResolvedJavaType type) {
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81 if (pitems != null) {
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82 for (T pt : pitems) {
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83 if (pt.getItem() == type) {
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84 return pt;
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85 }
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86 }
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87 }
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88 return null;
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89 }
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90
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91 @Override
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92 public String toString() {
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93 StringBuilder builder = new StringBuilder();
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94 builder.append(this.getClass().getName());
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95 builder.append("[");
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96 if (pitems != null) {
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97 for (T pt : pitems) {
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98 builder.append(pt.toString());
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99 builder.append(", ");
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100 }
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101 }
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102 builder.append(this.notRecordedProbability);
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103 builder.append("]");
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104 return builder.toString();
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105 }
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106
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107 public boolean isIncluded(U item) {
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108 if (this.getNotRecordedProbability() > 0.0) {
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109 return true;
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110 } else {
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111 for (int i = 0; i < getItems().length; i++) {
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112 T pitem = getItems()[i];
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113 U curType = pitem.getItem();
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114 if (curType == item) {
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115 return true;
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116 }
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117 }
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118 }
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119 return false;
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120 }
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121
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122 @Override
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123 public boolean equals(Object other) {
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124 if (other == this) {
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125 return true;
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126 }
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127 if (getClass() == other.getClass()) {
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128 AbstractJavaProfile javaTypeProfile = (AbstractJavaProfile) other;
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129 if (javaTypeProfile.notRecordedProbability != notRecordedProbability) {
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130 return false;
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131 }
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132 if (javaTypeProfile.pitems.length != pitems.length) {
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133 return false;
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134 }
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135
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136 for (int i = 0; i < pitems.length; ++i) {
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137 if (!pitems[i].equals(javaTypeProfile.pitems[i])) {
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138 return false;
c76b43ed5089 Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
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139 }
c76b43ed5089 Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
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140 }
c76b43ed5089 Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
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141
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Christian Haeubl <haeubl@ssw.jku.at>
parents:
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142 return true;
c76b43ed5089 Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
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143 }
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Christian Haeubl <haeubl@ssw.jku.at>
parents:
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144 return false;
c76b43ed5089 Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
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145 }
c76b43ed5089 Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
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146
c76b43ed5089 Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
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147 @Override
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Christian Haeubl <haeubl@ssw.jku.at>
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148 public int hashCode() {
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Christian Haeubl <haeubl@ssw.jku.at>
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149 return (int) Double.doubleToLongBits(notRecordedProbability) + pitems.length * 13;
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parents:
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150 }
c76b43ed5089 Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
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151 }