Mercurial > hg > graal-jvmci-8
annotate jvmci/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotJVMCIRuntime.java @ 23366:45168ac6d3bc
Merge.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Fri, 29 Apr 2016 11:10:18 +0200 |
parents | 56479400913e |
children | 24505bf61633 |
rev | line source |
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1 /* |
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2 * Copyright (c) 2015, 2016, 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 jdk.vm.ci.hotspot; |
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24 |
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25 import static jdk.vm.ci.inittimer.InitTimer.timer; |
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26 |
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27 import java.io.IOException; |
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28 import java.io.OutputStream; |
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29 import java.io.PrintStream; |
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30 import java.lang.reflect.Array; |
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31 import java.lang.reflect.Field; |
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32 import java.lang.reflect.Method; |
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33 import java.lang.reflect.Modifier; |
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34 import java.util.Collections; |
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35 import java.util.HashMap; |
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36 import java.util.Map; |
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37 import java.util.Objects; |
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38 import java.util.TreeMap; |
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39 |
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40 import jdk.vm.ci.code.Architecture; |
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41 import jdk.vm.ci.code.CompilationRequestResult; |
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42 import jdk.vm.ci.code.CompiledCode; |
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43 import jdk.vm.ci.code.InstalledCode; |
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44 import jdk.vm.ci.common.JVMCIError; |
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45 import jdk.vm.ci.hotspot.services.HotSpotVMEventListener; |
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46 import jdk.vm.ci.inittimer.InitTimer; |
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47 import jdk.vm.ci.inittimer.SuppressFBWarnings; |
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48 import jdk.vm.ci.meta.JVMCIMetaAccessContext; |
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49 import jdk.vm.ci.meta.JavaKind; |
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50 import jdk.vm.ci.meta.JavaType; |
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51 import jdk.vm.ci.meta.ResolvedJavaType; |
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52 import jdk.vm.ci.runtime.JVMCI; |
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53 import jdk.vm.ci.runtime.JVMCIBackend; |
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54 import jdk.vm.ci.runtime.JVMCICompiler; |
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55 import jdk.vm.ci.services.Services; |
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56 import sun.misc.VM; |
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57 |
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58 //JaCoCo Exclude |
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59 |
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60 /** |
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61 * HotSpot implementation of a JVMCI runtime. |
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62 * |
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63 * The initialization of this class is very fragile since it's initialized both through |
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64 * {@link JVMCI#initialize()} or through calling {@link HotSpotJVMCIRuntime#runtime()} and |
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65 * {@link HotSpotJVMCIRuntime#runtime()} is also called by {@link JVMCI#initialize()}. So this class |
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66 * can't have a static initializer and any required initialization must be done as part of |
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67 * {@link #runtime()}. This allows the initialization to funnel back through |
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68 * {@link JVMCI#initialize()} without deadlocking. |
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69 */ |
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70 public final class HotSpotJVMCIRuntime implements HotSpotJVMCIRuntimeProvider, HotSpotProxified { |
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71 |
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72 @SuppressWarnings("try") |
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73 static class DelayedInit { |
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74 private static final HotSpotJVMCIRuntime instance; |
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75 |
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76 static { |
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77 try (InitTimer t = timer("HotSpotJVMCIRuntime.<init>")) { |
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78 instance = new HotSpotJVMCIRuntime(); |
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79 } |
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80 } |
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81 } |
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82 |
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83 /** |
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84 * Gets the singleton {@link HotSpotJVMCIRuntime} object. |
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85 */ |
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86 public static HotSpotJVMCIRuntime runtime() { |
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87 JVMCI.initialize(); |
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88 return DelayedInit.instance; |
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89 } |
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90 |
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91 /** |
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92 * A list of all supported JVMCI options. |
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93 */ |
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94 public enum Option { |
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95 Compiler(String.class, null, "Selects the system compiler."), |
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96 ImplicitStableValues(boolean.class, true, "Mark well-known stable fields as such."), |
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97 // Note: The following one is not used (see InitTimer.ENABLED). |
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98 InitTimer(boolean.class, false, "Specifies if initialization timing is enabled."), |
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99 PrintConfig(boolean.class, false, "Prints all HotSpotVMConfig fields."), |
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100 PrintFlags(boolean.class, false, "Prints all JVMCI flags and exits."), |
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101 ShowFlags(boolean.class, false, "Prints all JVMCI flags and continues."), |
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102 TraceMethodDataFilter(String.class, null, ""), |
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103 TrustFinalDefaultFields(boolean.class, true, "Determines whether to treat final fields with default values as constant."); |
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104 |
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105 /** |
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106 * The prefix for system properties that are JVMCI options. |
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107 */ |
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108 private static final String JVMCI_OPTION_PROPERTY_PREFIX = "jvmci."; |
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109 |
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110 /** |
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111 * Marker for uninitialized flags. |
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112 */ |
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113 private static final String UNINITIALIZED = "UNINITIALIZED"; |
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114 |
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115 private final Class<?> type; |
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116 private Object value; |
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117 private final Object defaultValue; |
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118 private boolean isDefault; |
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119 private final String help; |
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120 |
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121 Option(Class<?> type, Object defaultValue, String help) { |
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122 assert Character.isUpperCase(name().charAt(0)) : "Option name must start with upper-case letter: " + name(); |
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123 this.type = type; |
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124 this.value = UNINITIALIZED; |
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125 this.defaultValue = defaultValue; |
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126 this.help = help; |
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127 } |
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128 |
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129 @SuppressFBWarnings(value = "ES_COMPARING_STRINGS_WITH_EQ", justification = "sentinel must be String since it's a static final in an enum") |
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130 private Object getValue() { |
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131 if (value == UNINITIALIZED) { |
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132 String propertyValue = VM.getSavedProperty(JVMCI_OPTION_PROPERTY_PREFIX + name()); |
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133 if (propertyValue == null) { |
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134 this.value = defaultValue; |
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135 this.isDefault = true; |
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136 } else { |
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137 if (type == boolean.class) { |
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138 this.value = Boolean.parseBoolean(propertyValue); |
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139 } else if (type == String.class) { |
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140 this.value = propertyValue; |
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141 } else { |
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142 throw new JVMCIError("Unexpected option type " + type); |
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143 } |
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144 this.isDefault = false; |
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145 } |
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146 // Saved properties should not be interned - let's be sure |
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147 assert value != UNINITIALIZED; |
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148 } |
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149 return value; |
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150 } |
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151 |
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152 /** |
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153 * Returns the option's value as boolean. |
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154 * |
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155 * @return option's value |
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156 */ |
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157 public boolean getBoolean() { |
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158 return (boolean) getValue(); |
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159 } |
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160 |
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161 /** |
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162 * Returns the option's value as String. |
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163 * |
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164 * @return option's value |
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165 */ |
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166 public String getString() { |
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167 return (String) getValue(); |
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168 } |
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169 |
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170 /** |
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171 * Prints all option flags to {@code out}. |
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172 * |
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173 * @param out stream to print to |
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174 */ |
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175 public static void printFlags(PrintStream out) { |
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176 out.println("[List of JVMCI options]"); |
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177 for (Option option : values()) { |
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178 Object value = option.getValue(); |
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179 String assign = option.isDefault ? ":=" : " ="; |
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180 out.printf("%9s %-40s %s %-14s %s%n", option.type.getSimpleName(), option, assign, value, option.help); |
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181 } |
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182 } |
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183 } |
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184 |
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185 public static HotSpotJVMCIBackendFactory findFactory(String architecture) { |
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186 for (HotSpotJVMCIBackendFactory factory : Services.load(HotSpotJVMCIBackendFactory.class)) { |
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187 if (factory.getArchitecture().equalsIgnoreCase(architecture)) { |
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188 return factory; |
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189 } |
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190 } |
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191 |
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192 throw new JVMCIError("No JVMCI runtime available for the %s architecture", architecture); |
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193 } |
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194 |
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195 /** |
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196 * Gets the kind of a word value on the {@linkplain #getHostJVMCIBackend() host} backend. |
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197 */ |
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198 public static JavaKind getHostWordKind() { |
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199 return runtime().getHostJVMCIBackend().getCodeCache().getTarget().wordJavaKind; |
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200 } |
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201 |
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202 protected final CompilerToVM compilerToVm; |
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203 |
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204 protected final HotSpotVMConfig config; |
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205 private final JVMCIBackend hostBackend; |
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206 |
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207 private volatile JVMCICompiler compiler; |
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208 protected final JVMCIMetaAccessContext metaAccessContext; |
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209 |
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210 private final Map<Class<? extends Architecture>, JVMCIBackend> backends = new HashMap<>(); |
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211 |
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212 private final Iterable<HotSpotVMEventListener> vmEventListeners; |
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213 |
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214 @SuppressWarnings("unused") private final String[] trivialPrefixes; |
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215 |
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216 @SuppressWarnings("try") |
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217 private HotSpotJVMCIRuntime() { |
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218 compilerToVm = new CompilerToVM(); |
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219 |
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220 try (InitTimer t = timer("HotSpotVMConfig<init>")) { |
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221 config = new HotSpotVMConfig(compilerToVm); |
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222 } |
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223 |
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224 String hostArchitecture = config.getHostArchitectureName(); |
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225 |
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226 HotSpotJVMCIBackendFactory factory; |
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227 try (InitTimer t = timer("find factory:", hostArchitecture)) { |
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228 factory = findFactory(hostArchitecture); |
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229 } |
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230 |
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231 try (InitTimer t = timer("create JVMCI backend:", hostArchitecture)) { |
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232 hostBackend = registerBackend(factory.createJVMCIBackend(this, null)); |
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233 } |
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234 |
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235 vmEventListeners = Services.load(HotSpotVMEventListener.class); |
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236 |
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237 JVMCIMetaAccessContext context = null; |
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238 for (HotSpotVMEventListener vmEventListener : vmEventListeners) { |
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239 context = vmEventListener.createMetaAccessContext(this); |
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240 if (context != null) { |
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241 break; |
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242 } |
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243 } |
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244 if (context == null) { |
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245 context = new HotSpotJVMCIMetaAccessContext(); |
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246 } |
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247 metaAccessContext = context; |
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248 |
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249 boolean printFlags = Option.PrintFlags.getBoolean(); |
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250 boolean showFlags = Option.ShowFlags.getBoolean(); |
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251 if (printFlags || showFlags) { |
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252 Option.printFlags(System.out); |
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253 if (printFlags) { |
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254 System.exit(0); |
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255 } |
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256 } |
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257 |
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258 if (Option.PrintConfig.getBoolean()) { |
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259 printConfig(config, compilerToVm); |
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260 } |
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261 |
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262 trivialPrefixes = HotSpotJVMCICompilerConfig.getCompilerFactory().getTrivialPrefixes(); |
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263 } |
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264 |
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265 private JVMCIBackend registerBackend(JVMCIBackend backend) { |
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266 Class<? extends Architecture> arch = backend.getCodeCache().getTarget().arch.getClass(); |
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267 JVMCIBackend oldValue = backends.put(arch, backend); |
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268 assert oldValue == null : "cannot overwrite existing backend for architecture " + arch.getSimpleName(); |
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269 return backend; |
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270 } |
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271 |
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272 public ResolvedJavaType fromClass(Class<?> javaClass) { |
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273 return metaAccessContext.fromClass(javaClass); |
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274 } |
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275 |
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276 public HotSpotVMConfig getConfig() { |
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277 return config; |
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278 } |
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279 |
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280 public CompilerToVM getCompilerToVM() { |
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281 return compilerToVm; |
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282 } |
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283 |
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284 public JVMCIMetaAccessContext getMetaAccessContext() { |
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285 return metaAccessContext; |
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286 } |
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287 |
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288 public JVMCICompiler getCompiler() { |
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289 if (compiler == null) { |
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290 synchronized (this) { |
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291 if (compiler == null) { |
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292 compiler = HotSpotJVMCICompilerConfig.getCompilerFactory().createCompiler(this); |
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293 } |
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294 } |
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295 } |
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296 return compiler; |
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297 } |
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298 |
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299 public JavaType lookupType(String name, HotSpotResolvedObjectType accessingType, boolean resolve) { |
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300 Objects.requireNonNull(accessingType, "cannot resolve type without an accessing class"); |
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301 // If the name represents a primitive type we can short-circuit the lookup. |
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302 if (name.length() == 1) { |
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303 JavaKind kind = JavaKind.fromPrimitiveOrVoidTypeChar(name.charAt(0)); |
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304 return fromClass(kind.toJavaClass()); |
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305 } |
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306 |
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307 // Resolve non-primitive types in the VM. |
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308 HotSpotResolvedObjectTypeImpl hsAccessingType = (HotSpotResolvedObjectTypeImpl) accessingType; |
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309 final HotSpotResolvedObjectTypeImpl klass = compilerToVm.lookupType(name, hsAccessingType.mirror(), resolve); |
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310 |
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311 if (klass == null) { |
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312 assert resolve == false; |
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313 return HotSpotUnresolvedJavaType.create(this, name); |
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314 } |
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315 return klass; |
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316 } |
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317 |
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318 public JVMCIBackend getHostJVMCIBackend() { |
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319 return hostBackend; |
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320 } |
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321 |
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322 public <T extends Architecture> JVMCIBackend getJVMCIBackend(Class<T> arch) { |
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323 assert arch != Architecture.class; |
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324 return backends.get(arch); |
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325 } |
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326 |
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327 public Map<Class<? extends Architecture>, JVMCIBackend> getJVMCIBackends() { |
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328 return Collections.unmodifiableMap(backends); |
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329 } |
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330 |
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331 /** |
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332 * Called from the VM. |
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333 */ |
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334 @SuppressWarnings({"unused"}) |
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335 private CompilationRequestResult compileMethod(HotSpotResolvedJavaMethod method, int entryBCI, long jvmciEnv, int id) { |
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336 CompilationRequestResult result = getCompiler().compileMethod(new HotSpotCompilationRequest(method, entryBCI, jvmciEnv, id)); |
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337 assert result != null : "compileMethod must always return something"; |
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338 return result; |
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339 } |
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340 |
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341 /** |
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342 * Shuts down the runtime. |
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343 * |
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344 * Called from the VM. |
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345 */ |
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346 @SuppressWarnings({"unused"}) |
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347 private void shutdown() throws Exception { |
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348 for (HotSpotVMEventListener vmEventListener : vmEventListeners) { |
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349 vmEventListener.notifyShutdown(); |
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350 } |
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351 } |
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352 |
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353 /** |
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354 * Notify on successful install into the CodeCache. |
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355 * |
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356 * @param hotSpotCodeCacheProvider |
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357 * @param installedCode |
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358 * @param compiledCode |
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359 */ |
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360 void notifyInstall(HotSpotCodeCacheProvider hotSpotCodeCacheProvider, InstalledCode installedCode, CompiledCode compiledCode) { |
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361 for (HotSpotVMEventListener vmEventListener : vmEventListeners) { |
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362 vmEventListener.notifyInstall(hotSpotCodeCacheProvider, installedCode, compiledCode); |
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363 } |
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364 } |
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365 |
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366 private static void printConfig(HotSpotVMConfig config, CompilerToVM vm) { |
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367 Field[] fields = config.getClass().getDeclaredFields(); |
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368 Map<String, Field> sortedFields = new TreeMap<>(); |
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369 for (Field f : fields) { |
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370 if (!f.isSynthetic() && !Modifier.isStatic(f.getModifiers())) { |
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371 f.setAccessible(true); |
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372 sortedFields.put(f.getName(), f); |
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373 } |
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374 } |
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375 for (Field f : sortedFields.values()) { |
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376 try { |
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377 String line = String.format("%9s %-40s = %s%n", f.getType().getSimpleName(), f.getName(), pretty(f.get(config))); |
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378 byte[] lineBytes = line.getBytes(); |
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379 vm.writeDebugOutput(lineBytes, 0, lineBytes.length); |
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380 vm.flushDebugOutput(); |
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381 } catch (Exception e) { |
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382 } |
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383 } |
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384 } |
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385 |
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386 private static String pretty(Object value) { |
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387 if (value == null) { |
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388 return "null"; |
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389 } |
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390 |
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391 Class<?> klass = value.getClass(); |
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392 if (value instanceof String) { |
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393 return "\"" + value + "\""; |
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394 } else if (value instanceof Method) { |
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395 return "method \"" + ((Method) value).getName() + "\""; |
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396 } else if (value instanceof Class<?>) { |
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397 return "class \"" + ((Class<?>) value).getSimpleName() + "\""; |
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398 } else if (value instanceof Integer) { |
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399 if ((Integer) value < 10) { |
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400 return value.toString(); |
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401 } |
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402 return value + " (0x" + Integer.toHexString((Integer) value) + ")"; |
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403 } else if (value instanceof Long) { |
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404 if ((Long) value < 10 && (Long) value > -10) { |
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405 return value + "l"; |
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406 } |
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407 return value + "l (0x" + Long.toHexString((Long) value) + "l)"; |
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408 } else if (klass.isArray()) { |
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409 StringBuilder str = new StringBuilder(); |
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410 int dimensions = 0; |
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411 while (klass.isArray()) { |
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412 dimensions++; |
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413 klass = klass.getComponentType(); |
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414 } |
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415 int length = Array.getLength(value); |
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416 str.append(klass.getSimpleName()).append('[').append(length).append(']'); |
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417 for (int i = 1; i < dimensions; i++) { |
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418 str.append("[]"); |
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419 } |
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420 str.append(" {"); |
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421 for (int i = 0; i < length; i++) { |
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422 str.append(pretty(Array.get(value, i))); |
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423 if (i < length - 1) { |
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424 str.append(", "); |
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425 } |
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426 } |
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427 str.append('}'); |
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428 return str.toString(); |
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429 } |
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430 return value.toString(); |
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431 } |
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432 |
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433 public OutputStream getLogStream() { |
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434 return new OutputStream() { |
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435 |
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436 @Override |
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437 public void write(byte[] b, int off, int len) throws IOException { |
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438 if (b == null) { |
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439 throw new NullPointerException(); |
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440 } else if (off < 0 || off > b.length || len < 0 || (off + len) > b.length || (off + len) < 0) { |
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441 throw new IndexOutOfBoundsException(); |
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442 } else if (len == 0) { |
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443 return; |
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444 } |
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445 compilerToVm.writeDebugOutput(b, off, len); |
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446 } |
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447 |
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448 @Override |
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449 public void write(int b) throws IOException { |
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450 write(new byte[]{(byte) b}, 0, 1); |
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451 } |
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452 |
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453 @Override |
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454 public void flush() throws IOException { |
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455 compilerToVm.flushDebugOutput(); |
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456 } |
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457 }; |
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458 } |
22634
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459 |
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460 /** |
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461 * Collects the current values of all JVMCI benchmark counters, summed up over all threads. |
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462 */ |
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463 public long[] collectCounters() { |
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464 return compilerToVm.collectCounters(); |
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465 } |
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466 } |