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annotate jvmci/com.oracle.jvmci.options/src/com/oracle/jvmci/options/OptionValue.java @ 21798:395ac43a8578

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moved JVMCI sources from graal/ to jvmci/ directory
author Doug Simon <doug.simon@oracle.com>
date Tue, 09 Jun 2015 00:22:49 +0200
parents graal/com.oracle.jvmci.options/src/com/oracle/jvmci/options/OptionValue.java@47bebae7454f
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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b1530a6cce8c renamed com.oracle.graal.[debug|options|hotspotvmconfig]* modules to com.oracle.jvmci.[debug|options|hotspotvmconfig]* modules (JBS:GRAAL-53)
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23 package com.oracle.jvmci.options;
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24
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25 import java.io.*;
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26 import java.util.*;
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27 import java.util.Map.Entry;
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28
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29 /**
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30 * An option value.
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31 */
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32 public class OptionValue<T> {
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33 /**
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34 * Temporarily changes the value for an option. The {@linkplain OptionValue#getValue() value} of
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35 * {@code option} is set to {@code value} until {@link OverrideScope#close()} is called on the
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36 * object returned by this method.
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37 * <p>
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38 * Since the returned object is {@link AutoCloseable} the try-with-resource construct can be
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39 * used:
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40 *
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41 * <pre>
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42 * try (OverrideScope s = OptionValue.override(myOption, myValue) {
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43 * // code that depends on myOption == myValue
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44 * }
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45 * </pre>
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46 */
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47 public static OverrideScope override(OptionValue<?> option, Object value) {
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48 OverrideScope current = getOverrideScope();
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49 if (current == null) {
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50 if (!value.equals(option.getValue())) {
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51 return new SingleOverrideScope(option, value);
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52 }
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53 Map<OptionValue<?>, Object> overrides = Collections.emptyMap();
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54 return new MultipleOverridesScope(current, overrides);
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55 }
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56 return new MultipleOverridesScope(current, option, value);
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57 }
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58
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59 /**
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60 * Temporarily changes the values for a set of options. The {@linkplain OptionValue#getValue()
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61 * value} of each {@code option} in {@code overrides} is set to the corresponding {@code value}
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62 * in {@code overrides} until {@link OverrideScope#close()} is called on the object returned by
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63 * this method.
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64 * <p>
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65 * Since the returned object is {@link AutoCloseable} the try-with-resource construct can be
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66 * used:
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67 *
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68 * <pre>
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69 * Map&lt;OptionValue, Object&gt; overrides = new HashMap&lt;&gt;();
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70 * overrides.put(myOption1, myValue1);
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71 * overrides.put(myOption2, myValue2);
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72 * try (OverrideScope s = OptionValue.override(overrides) {
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73 * // code that depends on myOption == myValue
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74 * }
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75 * </pre>
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76 */
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77 public static OverrideScope override(Map<OptionValue<?>, Object> overrides) {
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78 OverrideScope current = getOverrideScope();
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79 if (current == null && overrides.size() == 1) {
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80 Entry<OptionValue<?>, Object> single = overrides.entrySet().iterator().next();
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81 OptionValue<?> option = single.getKey();
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82 Object overrideValue = single.getValue();
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83 if (!overrideValue.equals(option.getValue())) {
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84 return new SingleOverrideScope(option, overrideValue);
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85 }
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86 }
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87 return new MultipleOverridesScope(current, overrides);
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88 }
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89
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90 /**
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91 * Temporarily changes the values for a set of options. The {@linkplain OptionValue#getValue()
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92 * value} of each {@code option} in {@code overrides} is set to the corresponding {@code value}
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93 * in {@code overrides} until {@link OverrideScope#close()} is called on the object returned by
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94 * this method.
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95 * <p>
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96 * Since the returned object is {@link AutoCloseable} the try-with-resource construct can be
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97 * used:
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98 *
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99 * <pre>
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100 * try (OverrideScope s = OptionValue.override(myOption1, myValue1, myOption2, myValue2) {
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101 * // code that depends on myOption == myValue
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102 * }
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103 * </pre>
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104 *
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105 * @param overrides overrides in the form {@code [option1, override1, option2, override2, ...]}
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106 */
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107 public static OverrideScope override(Object... overrides) {
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108 OverrideScope current = getOverrideScope();
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109 if (current == null && overrides.length == 2) {
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110 OptionValue<?> option = (OptionValue<?>) overrides[0];
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111 Object overrideValue = overrides[1];
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112 if (!overrideValue.equals(option.getValue())) {
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113 return new SingleOverrideScope(option, overrideValue);
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114 }
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115 }
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116 Map<OptionValue<?>, Object> map = Collections.emptyMap();
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117 for (int i = 0; i < overrides.length; i += 2) {
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118 OptionValue<?> option = (OptionValue<?>) overrides[i];
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119 Object overrideValue = overrides[i + 1];
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120 if (!overrideValue.equals(option.getValue())) {
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121 if (map.isEmpty()) {
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122 map = new HashMap<>();
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123 }
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124 map.put(option, overrideValue);
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125 }
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126 }
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127 return new MultipleOverridesScope(current, map);
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128 }
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129
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130 private static final ThreadLocal<OverrideScope> overrideScopeTL = new ThreadLocal<>();
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131
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132 protected static OverrideScope getOverrideScope() {
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133 return overrideScopeTL.get();
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134 }
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135
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136 protected static void setOverrideScope(OverrideScope overrideScope) {
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137 overrideScopeTL.set(overrideScope);
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138 }
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139
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140 private T defaultValue;
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141
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142 /**
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143 * The raw option value.
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144 */
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145 protected T value;
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146
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147 private OptionDescriptor descriptor;
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148
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149 private long reads;
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150 private OptionValue<?> next;
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151 private static OptionValue<?> head;
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152
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153 private static final boolean ShowReadsHistogram = Boolean.getBoolean("jvmci.showOptionValueReadsHistogram");
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154
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155 private static void addToHistogram(OptionValue<?> option) {
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156 if (ShowReadsHistogram) {
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157 synchronized (OptionValue.class) {
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158 option.next = head;
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159 head = option;
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160 }
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161 }
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162 }
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163
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164 @SuppressWarnings("unchecked")
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165 public OptionValue(T value) {
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166 this.defaultValue = value;
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167 this.value = (T) DEFAULT;
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168 addToHistogram(this);
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169 }
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170
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171 private static final Object DEFAULT = "DEFAULT";
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172 private static final Object UNINITIALIZED = "UNINITIALIZED";
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173
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174 /**
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175 * Creates an uninitialized option value for a subclass that initializes itself
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176 * {@link #defaultValue() lazily}.
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177 */
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178 @SuppressWarnings("unchecked")
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179 protected OptionValue() {
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180 this.defaultValue = (T) UNINITIALIZED;
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181 this.value = (T) DEFAULT;
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182 addToHistogram(this);
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183 }
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184
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185 /**
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186 * Lazy initialization of default value.
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187 */
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188 protected T defaultValue() {
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189 throw new InternalError("Option without a default value value must override defaultValue()");
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190 }
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191
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192 /**
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193 * Sets the descriptor for this option.
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194 */
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195 public void setDescriptor(OptionDescriptor descriptor) {
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196 this.descriptor = descriptor;
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197 }
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198
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199 /**
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200 * Returns the descriptor for this option, if it has been set by
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201 * {@link #setDescriptor(OptionDescriptor)}.
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202 */
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203 public OptionDescriptor getDescriptor() {
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204 return descriptor;
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205 }
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206
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207 /**
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208 * Gets the name of this option. The name for an option value with a null
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209 * {@linkplain #setDescriptor(OptionDescriptor) descriptor} is the value of
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210 * {@link Object#toString()}.
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211 */
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212 public String getName() {
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213 return descriptor == null ? super.toString() : (descriptor.getDeclaringClass().getName() + "." + descriptor.getName());
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214 }
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215
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216 @Override
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217 public String toString() {
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218 return getName() + "=" + getValue();
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219 }
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220
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221 /**
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222 * The initial value specified in source code. The returned value is not affected by calls to
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223 * {@link #setValue(Object)} or registering {@link OverrideScope}s. Therefore, it is also not
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224 * affected by options set on the command line.
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225 */
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226 public T getDefaultValue() {
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227 if (defaultValue == UNINITIALIZED) {
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228 defaultValue = defaultValue();
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229 }
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230 return defaultValue;
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231 }
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232
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233 /**
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234 * Returns true if the option has the same value that was set in the source code.
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235 */
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236 public boolean hasDefaultValue() {
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237 getValue(); // ensure initialized
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238 return value == DEFAULT || Objects.equals(value, getDefaultValue());
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239 }
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240
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241 /**
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242 * Gets the value of this option.
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243 */
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244 public T getValue() {
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245 if (ShowReadsHistogram) {
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246 reads++;
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247 }
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248 if (!(this instanceof StableOptionValue)) {
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249 OverrideScope overrideScope = getOverrideScope();
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250 if (overrideScope != null) {
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251 T override = overrideScope.getOverride(this);
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252 if (override != null) {
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253 return override;
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254 }
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255 }
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256 }
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257 if (value != DEFAULT) {
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258 return value;
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259 } else {
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260 return getDefaultValue();
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261 }
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262 }
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263
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264 /**
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265 * Gets the values of this option including overridden values.
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266 *
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267 * @param c the collection to which the values are added. If null, one is allocated.
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268 * @return the collection to which the values were added in order from most overridden to
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269 * current value
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270 */
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271 @SuppressWarnings("unchecked")
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272 public Collection<T> getValues(Collection<T> c) {
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273 Collection<T> values = c == null ? new ArrayList<>() : c;
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274 if (!(this instanceof StableOptionValue)) {
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275 OverrideScope overrideScope = getOverrideScope();
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276 if (overrideScope != null) {
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277 overrideScope.getOverrides(this, (Collection<Object>) values);
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278 }
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279 }
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diff changeset
280 if (value != DEFAULT) {
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281 values.add(value);
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282 } else {
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283 values.add(getDefaultValue());
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284 }
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285 return values;
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286 }
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287
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288 /**
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289 * Sets the value of this option.
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290 */
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291 @SuppressWarnings("unchecked")
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292 public void setValue(Object v) {
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293 this.value = (T) v;
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294 }
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295
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diff changeset
296 /**
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297 * An object whose {@link #close()} method reverts the option value overriding initiated by
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298 * {@link OptionValue#override(OptionValue, Object)} or {@link OptionValue#override(Map)}.
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diff changeset
299 */
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diff changeset
300 public abstract static class OverrideScope implements AutoCloseable {
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301
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diff changeset
302 private Map<DerivedOptionValue<?>, Object> derivedCache = null;
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303
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diff changeset
304 public <T> T getDerived(DerivedOptionValue<T> key) {
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diff changeset
305 if (derivedCache == null) {
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diff changeset
306 derivedCache = new HashMap<>();
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307 }
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diff changeset
308 @SuppressWarnings("unchecked")
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diff changeset
309 T ret = (T) derivedCache.get(key);
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diff changeset
310 if (ret == null) {
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diff changeset
311 ret = key.createValue();
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diff changeset
312 derivedCache.put(key, ret);
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313 }
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314 return ret;
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315 }
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316
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diff changeset
317 abstract void addToInherited(Map<OptionValue<?>, Object> inherited);
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318
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diff changeset
319 abstract <T> T getOverride(OptionValue<T> option);
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320
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diff changeset
321 abstract void getOverrides(OptionValue<?> option, Collection<Object> c);
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322
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diff changeset
323 public abstract void close();
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diff changeset
324 }
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diff changeset
325
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diff changeset
326 static class SingleOverrideScope extends OverrideScope {
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diff changeset
327
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diff changeset
328 private final OptionValue<?> option;
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diff changeset
329 private final Object value;
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diff changeset
330
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diff changeset
331 public SingleOverrideScope(OptionValue<?> option, Object value) {
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diff changeset
332 if (option instanceof StableOptionValue) {
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diff changeset
333 throw new IllegalArgumentException("Cannot override stable option " + option);
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diff changeset
334 }
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diff changeset
335 this.option = option;
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diff changeset
336 this.value = value;
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07f2a49f0bfb Various adjustments to simplify future merges
Paul Woegerer <paul.woegerer@oracle.com>
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diff changeset
337 setOverrideScope(this);
12672
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diff changeset
338 }
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diff changeset
339
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diff changeset
340 @Override
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diff changeset
341 void addToInherited(Map<OptionValue<?>, Object> inherited) {
12672
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diff changeset
342 inherited.put(option, value);
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diff changeset
343 }
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diff changeset
344
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diff changeset
345 @SuppressWarnings("unchecked")
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diff changeset
346 @Override
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diff changeset
347 <T> T getOverride(OptionValue<T> key) {
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diff changeset
348 if (key == this.option) {
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diff changeset
349 return (T) value;
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diff changeset
350 }
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diff changeset
351 return null;
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diff changeset
352 }
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diff changeset
353
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diff changeset
354 @Override
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diff changeset
355 void getOverrides(OptionValue<?> key, Collection<Object> c) {
bb85b81258a0 modified OptionValue.toString() to use the current, possibly overriding value; added OptionValue.getValues()
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diff changeset
356 if (key == this.option) {
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diff changeset
357 c.add(value);
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diff changeset
358 }
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diff changeset
359 }
bb85b81258a0 modified OptionValue.toString() to use the current, possibly overriding value; added OptionValue.getValues()
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diff changeset
360
bb85b81258a0 modified OptionValue.toString() to use the current, possibly overriding value; added OptionValue.getValues()
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diff changeset
361 @Override
12672
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diff changeset
362 public void close() {
18935
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diff changeset
363 setOverrideScope(null);
12672
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diff changeset
364 }
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diff changeset
365 }
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diff changeset
366
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diff changeset
367 static class MultipleOverridesScope extends OverrideScope {
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diff changeset
368 final OverrideScope parent;
15040
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diff changeset
369 final Map<OptionValue<?>, Object> overrides;
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diff changeset
370
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diff changeset
371 public MultipleOverridesScope(OverrideScope parent, OptionValue<?> option, Object value) {
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diff changeset
372 this.parent = parent;
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diff changeset
373 this.overrides = new HashMap<>();
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diff changeset
374 if (parent != null) {
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diff changeset
375 parent.addToInherited(overrides);
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diff changeset
376 }
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diff changeset
377 if (option instanceof StableOptionValue) {
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diff changeset
378 throw new IllegalArgumentException("Cannot override stable option " + option);
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diff changeset
379 }
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diff changeset
380 if (!value.equals(option.getValue())) {
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diff changeset
381 this.overrides.put(option, value);
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diff changeset
382 }
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diff changeset
383 if (!overrides.isEmpty()) {
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diff changeset
384 setOverrideScope(this);
12672
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diff changeset
385 }
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diff changeset
386 }
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
387
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
388 MultipleOverridesScope(OverrideScope parent, Map<OptionValue<?>, Object> overrides) {
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
389 this.parent = parent;
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
390 if (overrides.isEmpty() && parent == null) {
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
391 this.overrides = Collections.emptyMap();
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
392 return;
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
393 }
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
394 this.overrides = new HashMap<>();
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
395 if (parent != null) {
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
396 parent.addToInherited(this.overrides);
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
397 }
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
398 for (Map.Entry<OptionValue<?>, Object> e : overrides.entrySet()) {
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
399 OptionValue<?> option = e.getKey();
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
400 if (option instanceof StableOptionValue) {
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
401 throw new IllegalArgumentException("Cannot override stable option " + option);
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
402 }
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
403 if (!e.getValue().equals(option.getValue())) {
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
404 this.overrides.put(option, e.getValue());
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
405 }
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
406 }
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
407 if (!this.overrides.isEmpty()) {
18935
07f2a49f0bfb Various adjustments to simplify future merges
Paul Woegerer <paul.woegerer@oracle.com>
parents: 18685
diff changeset
408 setOverrideScope(this);
12672
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
409 }
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
410 }
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
411
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
412 @Override
15040
288c23143d47 Fix most raw type references.
Josef Eisl <josef.eisl@jku.at>
parents: 14906
diff changeset
413 void addToInherited(Map<OptionValue<?>, Object> inherited) {
12672
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
414 if (parent != null) {
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
415 parent.addToInherited(inherited);
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
416 }
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
417 inherited.putAll(overrides);
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
418 }
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
419
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
420 @SuppressWarnings("unchecked")
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
421 @Override
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
422 <T> T getOverride(OptionValue<T> option) {
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
423 return (T) overrides.get(option);
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
424 }
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
425
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
426 @Override
12735
bb85b81258a0 modified OptionValue.toString() to use the current, possibly overriding value; added OptionValue.getValues()
Doug Simon <doug.simon@oracle.com>
parents: 12682
diff changeset
427 void getOverrides(OptionValue<?> option, Collection<Object> c) {
bb85b81258a0 modified OptionValue.toString() to use the current, possibly overriding value; added OptionValue.getValues()
Doug Simon <doug.simon@oracle.com>
parents: 12682
diff changeset
428 Object v = overrides.get(option);
bb85b81258a0 modified OptionValue.toString() to use the current, possibly overriding value; added OptionValue.getValues()
Doug Simon <doug.simon@oracle.com>
parents: 12682
diff changeset
429 if (v != null) {
bb85b81258a0 modified OptionValue.toString() to use the current, possibly overriding value; added OptionValue.getValues()
Doug Simon <doug.simon@oracle.com>
parents: 12682
diff changeset
430 c.add(v);
bb85b81258a0 modified OptionValue.toString() to use the current, possibly overriding value; added OptionValue.getValues()
Doug Simon <doug.simon@oracle.com>
parents: 12682
diff changeset
431 }
bb85b81258a0 modified OptionValue.toString() to use the current, possibly overriding value; added OptionValue.getValues()
Doug Simon <doug.simon@oracle.com>
parents: 12682
diff changeset
432 if (parent != null) {
bb85b81258a0 modified OptionValue.toString() to use the current, possibly overriding value; added OptionValue.getValues()
Doug Simon <doug.simon@oracle.com>
parents: 12682
diff changeset
433 parent.getOverrides(option, c);
bb85b81258a0 modified OptionValue.toString() to use the current, possibly overriding value; added OptionValue.getValues()
Doug Simon <doug.simon@oracle.com>
parents: 12682
diff changeset
434 }
bb85b81258a0 modified OptionValue.toString() to use the current, possibly overriding value; added OptionValue.getValues()
Doug Simon <doug.simon@oracle.com>
parents: 12682
diff changeset
435 }
bb85b81258a0 modified OptionValue.toString() to use the current, possibly overriding value; added OptionValue.getValues()
Doug Simon <doug.simon@oracle.com>
parents: 12682
diff changeset
436
bb85b81258a0 modified OptionValue.toString() to use the current, possibly overriding value; added OptionValue.getValues()
Doug Simon <doug.simon@oracle.com>
parents: 12682
diff changeset
437 @Override
12672
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
438 public void close() {
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
439 if (!overrides.isEmpty()) {
18935
07f2a49f0bfb Various adjustments to simplify future merges
Paul Woegerer <paul.woegerer@oracle.com>
parents: 18685
diff changeset
440 setOverrideScope(parent);
12672
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
441 }
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
442 }
38bf986ce231 added support for scoped overriding of OptionValues (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents: 12671
diff changeset
443 }
12682
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
444
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
445 static {
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
446 if (ShowReadsHistogram) {
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
447 Runtime.getRuntime().addShutdownHook(new Thread() {
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
448 @Override
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
449 public void run() {
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
450 ArrayList<OptionValue<?>> options = new ArrayList<>();
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
451 for (OptionValue<?> option = head; option != null; option = option.next) {
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
452 options.add(option);
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
453 }
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
454 Collections.sort(options, new Comparator<OptionValue<?>>() {
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
455
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
456 public int compare(OptionValue<?> o1, OptionValue<?> o2) {
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
457 if (o1.reads < o2.reads) {
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
458 return -1;
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
459 } else if (o1.reads > o2.reads) {
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
460 return 1;
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
461 } else {
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
462 return o1.getName().compareTo(o2.getName());
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
463 }
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
464 }
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
465 });
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
466 PrintStream out = System.out;
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
467 out.println("=== OptionValue reads histogram ===");
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
468 for (OptionValue<?> option : options) {
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
469 out.println(option.reads + "\t" + option);
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
470 }
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
471 }
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
472 });
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
473 }
5dbfb4d5eaba added a histogram to OptionValue (enabled by -Dgraal.showOptionValueReadsHistogram=true) to see which options are most frequently read
Doug Simon <doug.simon@oracle.com>
parents: 12674
diff changeset
474 }
9849
e876c2a6954f extensible option system (GRAAL-27)
Doug Simon <doug.simon@oracle.com>
parents:
diff changeset
475 }