Mercurial > hg > graal-compiler
annotate graal/com.oracle.max.base/src/com/sun/max/profile/ValueMetrics.java @ 3733:e233f5660da4
Added Java files from Maxine project.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sat, 17 Dec 2011 19:59:18 +0100 |
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children | bc8527f3071c |
rev | line source |
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1 /* |
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2 * Copyright (c) 2007, 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.sun.max.profile; |
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24 |
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25 import java.util.*; |
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26 import java.util.Arrays; |
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27 |
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28 import com.sun.max.*; |
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29 import com.sun.max.profile.Metrics.*; |
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30 import com.sun.max.program.*; |
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31 |
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32 /** |
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33 * This class is a container for a number of inner classes that support recording |
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34 * metrics about the distribution (i.e. frequency) of values. For example, |
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35 * these utilities can be used to gather the distribution of compilation times, |
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36 * object sizes, heap allocations, etc. Several different distribution implementations |
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37 * are available, with different time and space tradeoffs and different approximations, |
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38 * ranging from exact distributions to only distributions within a limited range. |
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39 */ |
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40 public class ValueMetrics { |
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41 |
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42 public static final Approximation EXACT = new Approximation(); |
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43 public static final Approximation TRACE = new IntegerTraceApproximation(1024); |
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44 |
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45 public static class Approximation { |
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46 } |
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47 |
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48 public static class FixedApproximation extends Approximation { |
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49 protected final Object[] values; |
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50 public FixedApproximation(Object... values) { |
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51 this.values = values.clone(); |
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52 } |
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53 } |
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54 |
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55 public static class IntegerRangeApproximation extends Approximation { |
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56 protected final int lowValue; |
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57 protected final int highValue; |
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58 public IntegerRangeApproximation(int low, int high) { |
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59 lowValue = low; |
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60 highValue = high; |
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61 } |
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62 } |
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63 |
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64 public static class IntegerTraceApproximation extends Approximation { |
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65 protected final int bufferSize; |
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66 public IntegerTraceApproximation(int bufferSize) { |
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67 this.bufferSize = bufferSize; |
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68 } |
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69 } |
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70 |
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71 /** |
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72 * This class and its descendants allow recording of a distribution of integer values. |
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73 * Various implementations implement different approximations with different time and |
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74 * space tradeoffs. Because this class and its descendants record distributions only |
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75 * for integers, it can be more efficient than using boxed (e.g. {@code java.lang.Integer}) values. |
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76 * |
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77 */ |
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78 public abstract static class IntegerDistribution extends Distribution<Integer> { |
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79 |
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80 public abstract void record(int value); |
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81 } |
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82 |
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83 public static class FixedRangeIntegerDistribution extends IntegerDistribution { |
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84 protected final int lowValue; |
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85 protected final int[] counts; |
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86 protected int missed; |
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87 |
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88 public FixedRangeIntegerDistribution(int low, int high) { |
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89 lowValue = low; |
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90 counts = new int[high - low]; |
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91 } |
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92 |
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93 @Override |
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94 public void record(int value) { |
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95 total++; |
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96 final int index = value - lowValue; |
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97 if (index >= 0 && index < counts.length) { |
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98 counts[index]++; |
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99 } else { |
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100 missed++; |
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101 } |
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102 } |
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103 |
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104 @Override |
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105 public int getCount(Integer value) { |
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106 final int index = value - lowValue; |
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107 if (index >= 0 && index < counts.length) { |
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108 return counts[index]; |
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109 } |
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110 return missed > 0 ? -1 : 0; |
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111 } |
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112 |
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113 @Override |
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114 public Map<Integer, Integer> asMap() { |
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115 final Map<Integer, Integer> map = new HashMap<Integer, Integer>(); |
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116 for (int i = 0; i != counts.length; ++i) { |
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117 map.put(lowValue + i, counts[i]); |
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118 } |
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119 return map; |
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120 } |
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121 |
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122 @Override |
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123 public void reset() { |
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124 super.reset(); |
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125 missed = 0; |
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126 Arrays.fill(counts, 0); |
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127 } |
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128 } |
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129 |
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130 public static class FixedSetIntegerDistribution extends IntegerDistribution { |
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131 |
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132 private final int[] set; |
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133 private final int[] count; |
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134 protected int missed; |
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135 |
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136 public FixedSetIntegerDistribution(int[] set) { |
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137 // TODO: sort() and binarySearch for large sets. |
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138 this.set = set.clone(); |
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139 count = new int[set.length]; |
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140 } |
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141 |
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142 @Override |
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143 public void record(int value) { |
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144 total++; |
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145 for (int i = 0; i < set.length; i++) { |
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146 if (set[i] == value) { |
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147 count[i]++; |
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148 return; |
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149 } |
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150 } |
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151 missed++; |
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152 } |
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153 |
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154 @Override |
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155 public int getCount(Integer value) { |
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156 final int val = value; |
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157 for (int i = 0; i < set.length; i++) { |
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158 if (set[i] == val) { |
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159 return count[i]; |
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160 } |
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161 } |
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162 return missed > 0 ? -1 : 0; |
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163 } |
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164 |
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165 @Override |
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166 public Map<Integer, Integer> asMap() { |
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167 final Map<Integer, Integer> map = new HashMap<Integer, Integer>(); |
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168 for (int i = 0; i != count.length; ++i) { |
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169 map.put(set[i], count[i]); |
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170 } |
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171 return map; |
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172 } |
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173 |
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174 @Override |
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175 public void reset() { |
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176 super.reset(); |
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177 missed = 0; |
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178 Arrays.fill(set, 0); |
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179 Arrays.fill(count, 0); |
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180 } |
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181 } |
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182 |
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183 /** |
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184 * The trace integer distribution class collects an exact distribution of integer |
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185 * values by internally recording every integer value in order in a fixed size buffer. |
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186 * When the buffer fills up, its contents are sorted and then reduced into a |
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187 * sorted list of value/count pairs. This results in an exact distribution |
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188 * with a tunable size/performance tradeoff, since a larger buffer means |
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189 * fewer reduction steps. |
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190 * |
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191 * This implementation is <b>not thread safe</b>. It may lose updates and potentially |
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192 * generate exceptions if used in a multi-threaded scenario. To make updates |
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193 * to this distribution thread safe, {@linkplain ValueMetrics#threadSafe(IntegerDistribution) wrap} |
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194 * it with a {@link ThreadsafeIntegerDistribution}. |
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195 * |
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196 */ |
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197 public static class TraceIntegerDistribution extends IntegerDistribution { |
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198 private final int[] buffer; |
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199 private int cursor; |
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200 |
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201 private int[] values; |
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202 private int[] counts; |
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203 |
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204 public TraceIntegerDistribution(int bufferSize) { |
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205 assert bufferSize > 0; |
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206 buffer = new int[bufferSize]; |
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207 } |
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208 |
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209 @Override |
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210 public void record(int value) { |
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211 total++; |
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212 buffer[cursor++] = value; |
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213 if (cursor == buffer.length) { |
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214 reduce(); |
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215 } |
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216 } |
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217 |
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218 @Override |
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219 public int getCount(Integer value) { |
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220 reduce(); |
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221 final int index = Arrays.binarySearch(values, value); |
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222 if (index < 0) { |
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223 return 0; |
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224 } |
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225 return counts[index]; |
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226 } |
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227 |
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228 @Override |
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229 public Map<Integer, Integer> asMap() { |
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230 reduce(); |
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231 // TODO: another map implementation might be better. |
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232 final Map<Integer, Integer> map = new HashMap<Integer, Integer>(); |
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233 if (values != null) { |
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234 for (int i = 0; i < values.length; i++) { |
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235 map.put(values[i], counts[i]); |
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236 } |
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237 } |
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238 return map; |
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|
239 } |
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240 |
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|
241 @Override |
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242 public void reset() { |
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243 super.reset(); |
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244 cursor = 0; |
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245 Arrays.fill(buffer, 0); |
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246 Arrays.fill(values, 0); |
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247 Arrays.fill(counts, 0); |
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248 } |
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249 |
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|
250 private void reduce() { |
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|
251 if (cursor == 0) { |
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|
252 // no recorded values to reduce |
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|
253 return; |
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|
254 } |
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|
255 // compression needed. |
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|
256 Arrays.sort(buffer, 0, cursor); |
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257 if (values != null) { |
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258 // there are already some entries. need to merge counts |
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259 removeExistingValues(); |
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parents:
diff
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260 if (cursor > 0) { |
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parents:
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261 final int[] ovalues = values; |
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262 final int[] ocounts = counts; |
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263 reduceBuffer(buffer); |
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parents:
diff
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|
264 mergeValues(ovalues, ocounts, values, counts); |
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parents:
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|
265 } |
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266 } else { |
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parents:
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267 // there currently aren't any entry arrays. reduce the buffer to generate the first ones. |
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268 reduceBuffer(buffer); |
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|
269 } |
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270 cursor = 0; |
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|
271 } |
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272 |
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273 private void removeExistingValues() { |
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274 // increment counts for values that already occur in the entry arrays |
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275 // and leave leftover values in the buffer |
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276 int valuesPos = 0; |
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277 final int ocursor = cursor; |
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278 cursor = 0; |
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279 for (int i = 0; i < ocursor; i++) { |
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280 final int nvalue = buffer[i]; |
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281 while (valuesPos < values.length && values[valuesPos] < nvalue) { |
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282 valuesPos++; |
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parents:
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|
283 } |
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|
284 if (valuesPos < values.length && values[valuesPos] == nvalue) { |
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285 counts[valuesPos]++; |
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parents:
diff
changeset
|
286 } else { |
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|
287 // retain the new values in the buffer |
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288 buffer[cursor++] = nvalue; |
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289 } |
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parents:
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|
290 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
291 } |
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292 |
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293 private void mergeValues(int[] avalues, int[] acounts, int[] bvalues, int[] bcounts) { |
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294 final int[] nvalues = new int[avalues.length + values.length]; |
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295 final int[] ncounts = new int[acounts.length + counts.length]; |
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296 |
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297 int a = 0; |
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|
298 int b = 0; |
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changeset
|
299 int n = 0; |
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parents:
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changeset
|
300 while (n < nvalues.length) { |
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|
301 while (a < avalues.length && (b == bvalues.length || avalues[a] < bvalues[b])) { |
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diff
changeset
|
302 nvalues[n] = avalues[a]; |
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changeset
|
303 ncounts[n] = acounts[a]; |
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diff
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|
304 n++; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
305 a++; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
306 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
307 while (b < bvalues.length && (a == avalues.length || bvalues[b] < avalues[a])) { |
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parents:
diff
changeset
|
308 nvalues[n] = bvalues[b]; |
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diff
changeset
|
309 ncounts[n] = bcounts[b]; |
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changeset
|
310 n++; |
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parents:
diff
changeset
|
311 b++; |
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parents:
diff
changeset
|
312 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
313 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
314 assert n == nvalues.length && a == avalues.length && b == bvalues.length; |
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parents:
diff
changeset
|
315 values = nvalues; |
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parents:
diff
changeset
|
316 counts = ncounts; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
317 } |
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parents:
diff
changeset
|
318 |
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diff
changeset
|
319 private void reduceBuffer(int[] buf) { |
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parents:
diff
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|
320 // count the unique values |
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parents:
diff
changeset
|
321 int last1 = buf[0]; |
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parents:
diff
changeset
|
322 int unique = 1; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
323 for (int i1 = 1; i1 < cursor; i1++) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
324 if (buffer[i1] != last1) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
325 unique++; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
326 last1 = buffer[i1]; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
327 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
328 } |
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parents:
diff
changeset
|
329 // create the values arrays and populate them |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
330 values = new int[unique]; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
331 counts = new int[unique]; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
332 int last = buffer[0]; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
333 int count = 1; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
334 int pos = 0; |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
335 for (int i = 1; i < cursor; i++) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
336 if (buffer[i] != last) { |
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parents:
diff
changeset
|
337 values[pos] = last; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
338 counts[pos] = count; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
339 pos++; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
340 count = 1; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
341 last = buffer[i]; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
342 } else { |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
343 count++; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
344 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
345 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
346 assert pos == values.length - 1; |
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parents:
diff
changeset
|
347 values[pos] = last; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
348 counts[pos] = count; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
349 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
350 } |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
351 |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
352 public static class HashedIntegerDistribution extends IntegerDistribution { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
353 private Map<Integer, Distribution> map; |
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parents:
diff
changeset
|
354 |
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parents:
diff
changeset
|
355 private Map<Integer, Distribution> map() { |
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parents:
diff
changeset
|
356 if (map == null) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
357 map = new HashMap<Integer, Distribution>(); |
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parents:
diff
changeset
|
358 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
359 return map; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
360 } |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
361 |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
362 @Override |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
363 public void record(int value) { |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
364 total++; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
365 final Integer integer = value; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
366 Distribution distribution = map().get(integer); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
367 if (distribution == null) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
368 distribution = new Distribution(); |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
369 map().put(integer, distribution); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
370 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
371 distribution.total++; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
372 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
373 @Override |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
374 public int getCount(Integer value) { |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
375 final Distribution distribution = map().get(value); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
376 if (distribution != null) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
377 return distribution.total; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
378 } |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
379 return 0; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
380 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
381 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
382 @Override |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
383 public Map<Integer, Integer> asMap() { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
384 final Map<Integer, Integer> result = new HashMap<Integer, Integer>(); |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
385 for (Map.Entry<Integer, Distribution> entry : map().entrySet()) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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386 result.put(entry.getKey(), entry.getValue().total); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
387 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
388 return result; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
389 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
390 |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
391 @Override |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
392 public void reset() { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
393 super.reset(); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
394 map = null; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
395 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
396 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
397 |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
398 /** |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
399 * This class and its descendants support profiling of individual objects. Reference |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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|
400 * equality is used here exclusively. Various implementations with different size and space |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
401 * tradeoffs offer various levels of accuracy. |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
402 * |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
403 */ |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
404 public abstract static class ObjectDistribution<T> extends Distribution<T> { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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|
405 public abstract void record(T value); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
406 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
407 |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
408 public static class HashedObjectDistribution<T> extends ObjectDistribution<T> { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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changeset
|
409 private Map<T, Distribution> map; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
410 private Map<T, Distribution> map() { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
411 if (map == null) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
412 map = new IdentityHashMap<T, Distribution>(); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
413 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
414 return map; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
415 } |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
416 |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
417 public HashedObjectDistribution() { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
418 } |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
419 |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
420 @Override |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
421 public void record(T value) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
422 total++; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
423 Distribution distribution = map().get(value); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
424 if (distribution == null) { |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
425 distribution = new Distribution(); |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
426 map().put(value, distribution); |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
427 } |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
428 distribution.total++; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
429 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
430 @Override |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
431 public int getCount(T value) { |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
432 final Distribution distribution = map().get(value); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
433 if (distribution != null) { |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
434 return distribution.total; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
435 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
436 return 0; |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
437 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
438 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
439 @Override |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
440 public Map<T, Integer> asMap() { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
441 final Map<T, Integer> result = new IdentityHashMap<T, Integer>(); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
442 for (Map.Entry<T, Distribution> entry : map().entrySet()) { |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
443 result.put(entry.getKey(), entry.getValue().total); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
444 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
445 return result; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
446 } |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
447 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
448 @Override |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
449 public void reset() { |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
450 super.reset(); |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
451 map = null; |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
452 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
453 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
454 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
455 public static class FixedSetObjectDistribution<T> extends ObjectDistribution<T> { |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
456 |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
457 private final T[] set; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
458 private final int[] count; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
459 private int missed; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
460 |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
461 public FixedSetObjectDistribution(T[] set) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
462 this.set = set.clone(); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
463 count = new int[set.length]; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
464 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
465 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
466 @Override |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
467 public void record(T value) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
468 total++; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
469 for (int i = 0; i < set.length; i++) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
470 if (set[i] == value) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
471 count[i]++; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
472 return; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
473 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
474 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
475 missed++; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
476 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
477 @Override |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
478 public int getCount(T value) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
479 for (int i = 0; i < set.length; i++) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
480 if (set[i] == value) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
481 return count[i]; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
482 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
483 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
484 return missed > 0 ? -1 : 0; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
485 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
486 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
487 @Override |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
488 public Map<T, Integer> asMap() { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
489 final Map<T, Integer> map = new IdentityHashMap<T, Integer>(); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
490 for (int i = 0; i != count.length; ++i) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
491 map.put(set[i], count[i]); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
492 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
493 return map; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
494 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
495 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
496 @Override |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
497 public void reset() { |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
498 super.reset(); |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
499 missed = 0; |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
500 Arrays.fill(set, 0); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
501 Arrays.fill(count, 0); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
502 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
503 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
504 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
505 /** |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
506 * This method creates a new distribution for the occurrence of integer values. |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
507 * |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
508 * @param name the name of the metric; if non-null, then a global metric of the specified |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
509 * name will be returned {@see GlobalMetrics} |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
510 * @param approx the approximation level that is requested. Different approximation levels |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
511 * have different time and space tradeoffs versus accuracy. |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
512 * @return a new integer distribution object that can be used to record occurrences of integers |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
513 */ |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
514 public static IntegerDistribution newIntegerDistribution(String name, Approximation approx) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
515 if (name != null) { |
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Added Java files from Maxine project.
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parents:
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changeset
|
516 final IntegerDistribution prev = GlobalMetrics.getMetric(name, IntegerDistribution.class); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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517 if (prev != null) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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518 return prev; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
519 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
520 return GlobalMetrics.setMetric(name, IntegerDistribution.class, createIntegerDistribution(approx)); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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|
521 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
522 return createIntegerDistribution(approx); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
523 } |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
524 |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
525 private static IntegerDistribution createIntegerDistribution(Approximation approx) throws ProgramError { |
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parents:
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|
526 if (approx instanceof FixedApproximation) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
527 final FixedApproximation fixedApprox = (FixedApproximation) approx; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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|
528 final int[] values = new int[fixedApprox.values.length]; |
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Added Java files from Maxine project.
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parents:
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|
529 for (int i = 0; i < values.length; i++) { |
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parents:
diff
changeset
|
530 values[i] = (Integer) fixedApprox.values[i]; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
531 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
532 return new FixedSetIntegerDistribution(values); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
533 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
534 if (approx instanceof IntegerRangeApproximation) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
535 final IntegerRangeApproximation fixedApprox = (IntegerRangeApproximation) approx; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
536 return new FixedRangeIntegerDistribution(fixedApprox.lowValue, fixedApprox.highValue); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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|
537 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
538 if (approx == EXACT) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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|
539 return new HashedIntegerDistribution(); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
540 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
541 if (approx instanceof IntegerTraceApproximation) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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|
542 final IntegerTraceApproximation traceApprox = (IntegerTraceApproximation) approx; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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|
543 return new TraceIntegerDistribution(traceApprox.bufferSize); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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|
544 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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changeset
|
545 return new HashedIntegerDistribution(); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
546 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
547 |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
548 /** |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
549 * This is a utility method to create an integer distribution over a range of specified integers. |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
550 * |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
551 * @param name the name of the metric |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
552 * @param low the lowest value to be recorded in the range (inclusive) |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
553 * @param high the highest value to be recorded (inclusive) |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
554 * @return a new integer distribution object that will record exact profiles for the integers in the |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
555 * specified range |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
556 */ |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
557 public static IntegerDistribution newIntegerDistribution(String name, int low, int high) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
558 return newIntegerDistribution(name, new IntegerRangeApproximation(low, high)); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
559 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
560 |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
561 /** |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
562 * This utility method creates a new integer distribution with the {@link #EXACT} approximation. |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
563 * Note that the implementation of this integer distribution may consume excessive time and/or |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
564 * space for unstructured distributions. |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
565 * |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
566 * @param name the name of the metric; if non-null, then a shared, global metric of the specified name will be returned |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
567 * @return a new integer distribution that records an exact profile |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
568 */ |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
569 public static IntegerDistribution newIntegerDistribution(String name) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
570 return newIntegerDistribution(name, EXACT); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
571 } |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
572 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
573 /** |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
574 * This utility method creates an integer distribution that records only the specified set of |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
575 * values, with all other values being not recorded. |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
576 * |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
577 * @param name the name of the metric; if non-null, then a shared, global metric of the specified name will be returned |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
578 * @param values the set of integer values to be recored |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
579 * @return a new integer distribution recorder |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
580 */ |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
581 public static IntegerDistribution newIntegerDistribution(String name, int[] values) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
582 final Object[] vals = new Object[values.length]; |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
583 for (int i = 0; i < vals.length; i++) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
584 vals[i] = values[i]; |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
585 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
586 return newIntegerDistribution(name, new FixedApproximation(vals)); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
587 } |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
588 |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
589 /** |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
590 * This method creates a new distribution capable of recording individual objects. |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
591 * |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
592 * @param <T> the type of objects being profiled |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
593 * @param name the name of the metric; if non-null, then a shared, global metric of the specified name will be |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
594 * returned |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
595 * @param approx the approximation for the distribution |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
596 * @return a new distribution capable of profiling the occurrence of objects |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
597 */ |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
598 public static <T> ObjectDistribution<T> newObjectDistribution(String name, Approximation approx) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
599 if (name != null) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
600 final ObjectDistribution<T> prev = Utils.cast(GlobalMetrics.getMetric(name, ObjectDistribution.class)); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
601 if (prev != null) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
602 return prev; |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
603 } |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
604 return Utils.cast(GlobalMetrics.setMetric(name, ObjectDistribution.class, createObjectDistribution(approx))); |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
605 } |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
606 return createObjectDistribution(approx); |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
607 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
608 |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
609 private static <T> ObjectDistribution<T> createObjectDistribution(Approximation approx) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
610 if (approx instanceof FixedApproximation) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
611 final FixedApproximation fixedApprox = (FixedApproximation) approx; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
612 final T[] values = Utils.cast(fixedApprox.values); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
613 return new FixedSetObjectDistribution<T>(values); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
614 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
615 if (approx == EXACT) { |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
616 return new HashedObjectDistribution<T>(); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
617 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
618 // default is to use the hashed object distribution |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
619 return new HashedObjectDistribution<T>(); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
620 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
621 |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
622 /** |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
623 * This is a utility method to create a new object distribution that only records occurrences of |
e233f5660da4
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
624 * objects in the specified set. |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
625 * |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
626 * @param <T> the type of the objects being profiled |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
627 * @param name the name of the metric |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
628 * @param set the set of objects for which to record exact profiling information |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
629 * @return a new distribution capable of producing an exact profile of the occurence of the specified objects |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
630 */ |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
631 public static <T> ObjectDistribution<T> newObjectDistribution(String name, T... set) { |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
632 return newObjectDistribution(name, new FixedApproximation(set)); |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
633 } |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
634 |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
635 /** |
e233f5660da4
Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
636 * This is utility method to create a new object distribution with an exact profile. |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
637 * |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
638 * @param <T> the type of the objects being profiled |
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Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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639 * @param name the name of metric |
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640 * @return a new distribution capable of producing an exact profile of the occurrences of all of the specified |
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641 * objects. |
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parents:
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642 */ |
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643 public static <T> ObjectDistribution<T> newObjectDistribution(String name) { |
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644 return newObjectDistribution(name, EXACT); |
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645 } |
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646 |
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647 public static class ThreadsafeIntegerDistribution extends IntegerDistribution { |
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648 |
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649 private final IntegerDistribution distribution; |
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650 |
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651 public ThreadsafeIntegerDistribution(IntegerDistribution distribution) { |
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652 this.distribution = distribution; |
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653 } |
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654 @Override |
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655 public void record(int value) { |
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656 synchronized (distribution) { |
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657 distribution.record(value); |
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658 } |
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659 } |
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660 @Override |
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661 public int getCount(Integer value) { |
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662 synchronized (distribution) { |
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663 return distribution.getCount(value); |
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664 } |
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665 } |
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666 |
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667 @Override |
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668 public Map<Integer, Integer> asMap() { |
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669 synchronized (distribution) { |
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670 return distribution.asMap(); |
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parents:
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671 } |
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672 } |
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673 @Override |
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674 public void reset() { |
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675 super.reset(); |
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676 distribution.reset(); |
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677 } |
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678 |
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679 } |
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680 |
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681 private static class ThreadsafeObjectDistribution<T> extends ObjectDistribution<T> { |
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682 |
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683 private final ObjectDistribution<T> distribution; |
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684 |
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685 ThreadsafeObjectDistribution(ObjectDistribution<T> distribution) { |
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686 this.distribution = distribution; |
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687 } |
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688 @Override |
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689 public void record(T value) { |
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690 synchronized (distribution) { |
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691 distribution.record(value); |
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692 } |
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693 } |
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694 @Override |
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695 public int getCount(T value) { |
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696 synchronized (distribution) { |
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697 return distribution.getCount(value); |
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698 } |
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699 } |
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700 |
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701 @Override |
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702 public Map<T, Integer> asMap() { |
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703 synchronized (distribution) { |
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704 return distribution.asMap(); |
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parents:
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|
705 } |
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parents:
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706 } |
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parents:
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707 } |
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parents:
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|
708 |
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parents:
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|
709 /** |
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710 * This method creates a wrapper around the specified integer distribution that ensures |
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711 * access to the distribution is synchronized. |
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parents:
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|
712 * |
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713 * @param distribution the distribution to wrap in a synchronization |
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714 * @return a synchronized view of the distribution |
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parents:
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|
715 */ |
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parents:
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716 public static IntegerDistribution threadSafe(IntegerDistribution distribution) { |
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parents:
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717 return new ThreadsafeIntegerDistribution(distribution); |
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parents:
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|
718 } |
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parents:
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|
719 |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
720 /** |
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parents:
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|
721 * This method creates a wrapper around the specified integer distribution that ensures |
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parents:
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|
722 * access to the distribution is synchronized. |
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parents:
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|
723 * |
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parents:
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|
724 * @param distribution the distribution to wrap in a synchronization |
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parents:
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725 * @return a synchronized view of the distribution |
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parents:
diff
changeset
|
726 */ |
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parents:
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|
727 public static <T> ObjectDistribution<T> threadSafe(ObjectDistribution<T> distribution) { |
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parents:
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|
728 return new ThreadsafeObjectDistribution<T>(distribution); |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
729 } |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
730 } |