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annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/jvmci/HotSpotMetaAccessProvider.java @ 21533:b118c9be1d1f

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fixed regression preventing hosted CompileTheWorld from running (JBS:GRAAL-53)
author Doug Simon <doug.simon@oracle.com>
date Sun, 24 May 2015 14:44:28 +0200
parents de0cf192779c
children 5e868236654f
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1 /*
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2 * Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.graal.hotspot.jvmci;
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24
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25 import static com.oracle.graal.compiler.common.UnsafeAccess.*;
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26 import static com.oracle.graal.hotspot.jvmci.HotSpotResolvedJavaType.*;
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27 import static com.oracle.graal.hotspot.jvmci.HotSpotResolvedObjectTypeImpl.*;
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28
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29 import java.lang.reflect.*;
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30
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31 import com.oracle.graal.api.code.*;
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32 import com.oracle.graal.api.meta.*;
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33
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34 /**
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35 * HotSpot implementation of {@link MetaAccessProvider}.
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36 */
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37 public class HotSpotMetaAccessProvider implements MetaAccessProvider, HotSpotProxified {
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38
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39 protected final HotSpotJVMCIRuntimeProvider runtime;
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40
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41 public HotSpotMetaAccessProvider(HotSpotJVMCIRuntimeProvider runtime) {
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42 this.runtime = runtime;
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43 }
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44
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45 public ResolvedJavaType lookupJavaType(Class<?> clazz) {
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46 if (clazz == null) {
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47 throw new IllegalArgumentException("Class parameter was null");
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48 }
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49 return runtime.fromClass(clazz);
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50 }
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51
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52 public HotSpotResolvedObjectType lookupJavaType(JavaConstant constant) {
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53 if (constant.isNull() || !(constant instanceof HotSpotObjectConstant)) {
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54 return null;
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55 }
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56 return ((HotSpotObjectConstant) constant).getType();
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57 }
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58
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59 public Signature parseMethodDescriptor(String signature) {
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60 return new HotSpotSignature(runtime, signature);
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61 }
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62
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63 /**
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64 * {@link Field} object of {@link Method#slot}.
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65 */
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66 @SuppressWarnings("javadoc") private Field reflectionMethodSlot = getReflectionSlotField(Method.class);
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67
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68 /**
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69 * {@link Field} object of {@link Constructor#slot}.
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70 */
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71 @SuppressWarnings("javadoc") private Field reflectionConstructorSlot = getReflectionSlotField(Constructor.class);
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72
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73 private static Field getReflectionSlotField(Class<?> reflectionClass) {
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74 try {
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75 Field field = reflectionClass.getDeclaredField("slot");
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76 field.setAccessible(true);
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77 return field;
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78 } catch (NoSuchFieldException | SecurityException e) {
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79 throw new InternalError(e);
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80 }
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81 }
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82
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83 public ResolvedJavaMethod lookupJavaMethod(Executable reflectionMethod) {
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84 try {
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85 Class<?> holder = reflectionMethod.getDeclaringClass();
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86 Field slotField = reflectionMethod instanceof Constructor ? reflectionConstructorSlot : reflectionMethodSlot;
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87 final int slot = slotField.getInt(reflectionMethod);
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88 final long metaspaceMethod = runtime.getCompilerToVM().getMetaspaceMethod(holder, slot);
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89 return HotSpotResolvedJavaMethodImpl.fromMetaspace(metaspaceMethod);
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90 } catch (IllegalArgumentException | IllegalAccessException e) {
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91 throw new InternalError(e);
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92 }
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93 }
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94
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95 public ResolvedJavaField lookupJavaField(Field reflectionField) {
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96 String name = reflectionField.getName();
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97 Class<?> fieldHolder = reflectionField.getDeclaringClass();
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98 Class<?> fieldType = reflectionField.getType();
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99 // java.lang.reflect.Field's modifiers should be enough here since VM internal modifier bits
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100 // are not used (yet).
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101 final int modifiers = reflectionField.getModifiers();
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102 final long offset = Modifier.isStatic(modifiers) ? unsafe.staticFieldOffset(reflectionField) : unsafe.objectFieldOffset(reflectionField);
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103
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104 HotSpotResolvedObjectType holder = fromObjectClass(fieldHolder);
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105 JavaType type = fromClass(fieldType);
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106
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107 if (offset != -1) {
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108 HotSpotResolvedObjectType resolved = holder;
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109 return resolved.createField(name, type, offset, modifiers);
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110 } else {
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111 throw new InternalError("unresolved field " + reflectionField);
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112 }
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113 }
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114
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115 private static int intMaskRight(int n) {
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116 assert n <= 32;
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117 return n == 32 ? -1 : (1 << n) - 1;
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118 }
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119
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120 @Override
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121 public JavaConstant encodeDeoptActionAndReason(DeoptimizationAction action, DeoptimizationReason reason, int debugId) {
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122 HotSpotVMConfig config = runtime.getConfig();
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123 int actionValue = convertDeoptAction(action);
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124 int reasonValue = convertDeoptReason(reason);
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125 int debugValue = debugId & intMaskRight(config.deoptimizationDebugIdBits);
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126 JavaConstant c = JavaConstant.forInt(~((debugValue << config.deoptimizationDebugIdShift) | (reasonValue << config.deoptimizationReasonShift) | (actionValue << config.deoptimizationActionShift)));
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127 assert c.asInt() < 0;
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128 return c;
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129 }
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130
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131 public DeoptimizationReason decodeDeoptReason(JavaConstant constant) {
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132 HotSpotVMConfig config = runtime.getConfig();
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133 int reasonValue = ((~constant.asInt()) >> config.deoptimizationReasonShift) & intMaskRight(config.deoptimizationReasonBits);
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134 DeoptimizationReason reason = convertDeoptReason(reasonValue);
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135 return reason;
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136 }
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137
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diff changeset
138 public DeoptimizationAction decodeDeoptAction(JavaConstant constant) {
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139 HotSpotVMConfig config = runtime.getConfig();
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140 int actionValue = ((~constant.asInt()) >> config.deoptimizationActionShift) & intMaskRight(config.deoptimizationActionBits);
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141 DeoptimizationAction action = convertDeoptAction(actionValue);
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142 return action;
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143 }
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144
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diff changeset
145 public int decodeDebugId(JavaConstant constant) {
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146 HotSpotVMConfig config = runtime.getConfig();
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45fcb3ec0d43 Rename more 'speculation id' to 'debug id'. Add decodeDebugId to MetaAccessProvider
Gilles Duboscq <duboscq@ssw.jku.at>
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diff changeset
147 return ((~constant.asInt()) >> config.deoptimizationDebugIdShift) & intMaskRight(config.deoptimizationDebugIdBits);
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148 }
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149
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150 public int convertDeoptAction(DeoptimizationAction action) {
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151 HotSpotVMConfig config = runtime.getConfig();
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152 switch (action) {
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153 case None:
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154 return config.deoptActionNone;
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155 case RecompileIfTooManyDeopts:
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156 return config.deoptActionMaybeRecompile;
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157 case InvalidateReprofile:
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158 return config.deoptActionReinterpret;
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159 case InvalidateRecompile:
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160 return config.deoptActionMakeNotEntrant;
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161 case InvalidateStopCompiling:
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162 return config.deoptActionMakeNotCompilable;
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163 default:
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164 throw new InternalError(action.toString());
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165 }
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166 }
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167
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168 public DeoptimizationAction convertDeoptAction(int action) {
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169 HotSpotVMConfig config = runtime.getConfig();
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170 if (action == config.deoptActionNone) {
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171 return DeoptimizationAction.None;
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172 }
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173 if (action == config.deoptActionMaybeRecompile) {
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174 return DeoptimizationAction.RecompileIfTooManyDeopts;
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175 }
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176 if (action == config.deoptActionReinterpret) {
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177 return DeoptimizationAction.InvalidateReprofile;
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178 }
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179 if (action == config.deoptActionMakeNotEntrant) {
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180 return DeoptimizationAction.InvalidateRecompile;
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181 }
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182 if (action == config.deoptActionMakeNotCompilable) {
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183 return DeoptimizationAction.InvalidateStopCompiling;
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184 }
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185 throw new InternalError(String.valueOf(action));
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186 }
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187
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188 public int convertDeoptReason(DeoptimizationReason reason) {
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189 HotSpotVMConfig config = runtime.getConfig();
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190 switch (reason) {
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191 case None:
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192 return config.deoptReasonNone;
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193 case NullCheckException:
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194 return config.deoptReasonNullCheck;
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195 case BoundsCheckException:
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196 return config.deoptReasonRangeCheck;
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197 case ClassCastException:
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198 return config.deoptReasonClassCheck;
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199 case ArrayStoreException:
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200 return config.deoptReasonArrayCheck;
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201 case UnreachedCode:
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202 return config.deoptReasonUnreached0;
12429
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parents:
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203 case TypeCheckedInliningViolated:
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204 return config.deoptReasonTypeCheckInlining;
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parents:
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205 case OptimizedTypeCheckViolated:
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206 return config.deoptReasonOptimizedTypeCheck;
12429
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parents:
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207 case NotCompiledExceptionHandler:
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208 return config.deoptReasonNotCompiledExceptionHandler;
12429
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parents:
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209 case Unresolved:
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210 return config.deoptReasonUnresolved;
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parents:
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211 case JavaSubroutineMismatch:
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212 return config.deoptReasonJsrMismatch;
12429
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213 case ArithmeticException:
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214 return config.deoptReasonDiv0Check;
12429
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parents:
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215 case RuntimeConstraint:
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diff changeset
216 return config.deoptReasonConstraint;
12429
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parents:
diff changeset
217 case LoopLimitCheck:
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diff changeset
218 return config.deoptReasonLoopLimitCheck;
13155
1dd9aa5a9ee5 Deoptimization reason for failed aliasing assumptions.
Roland Schatz <roland.schatz@oracle.com>
parents: 12757
diff changeset
219 case Aliasing:
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diff changeset
220 return config.deoptReasonAliasing;
16535
ada0a7729b6f Truffle: introduce debug option to print the stack trace when transferring to the interpreter
Andreas Woess <andreas.woess@jku.at>
parents: 15909
diff changeset
221 case TransferToInterpreter:
ada0a7729b6f Truffle: introduce debug option to print the stack trace when transferring to the interpreter
Andreas Woess <andreas.woess@jku.at>
parents: 15909
diff changeset
222 return config.deoptReasonTransferToInterpreter;
12429
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parents:
diff changeset
223 default:
21529
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Doug Simon <doug.simon@oracle.com>
parents: 18867
diff changeset
224 throw new InternalError(reason.toString());
12429
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parents:
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225 }
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parents:
diff changeset
226 }
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diff changeset
227
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diff changeset
228 public DeoptimizationReason convertDeoptReason(int reason) {
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229 HotSpotVMConfig config = runtime.getConfig();
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diff changeset
230 if (reason == config.deoptReasonNone) {
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diff changeset
231 return DeoptimizationReason.None;
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232 }
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233 if (reason == config.deoptReasonNullCheck) {
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234 return DeoptimizationReason.NullCheckException;
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235 }
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diff changeset
236 if (reason == config.deoptReasonRangeCheck) {
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diff changeset
237 return DeoptimizationReason.BoundsCheckException;
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238 }
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diff changeset
239 if (reason == config.deoptReasonClassCheck) {
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diff changeset
240 return DeoptimizationReason.ClassCastException;
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241 }
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diff changeset
242 if (reason == config.deoptReasonArrayCheck) {
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diff changeset
243 return DeoptimizationReason.ArrayStoreException;
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244 }
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diff changeset
245 if (reason == config.deoptReasonUnreached0) {
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diff changeset
246 return DeoptimizationReason.UnreachedCode;
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247 }
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diff changeset
248 if (reason == config.deoptReasonTypeCheckInlining) {
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249 return DeoptimizationReason.TypeCheckedInliningViolated;
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250 }
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diff changeset
251 if (reason == config.deoptReasonOptimizedTypeCheck) {
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diff changeset
252 return DeoptimizationReason.OptimizedTypeCheckViolated;
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253 }
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diff changeset
254 if (reason == config.deoptReasonNotCompiledExceptionHandler) {
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diff changeset
255 return DeoptimizationReason.NotCompiledExceptionHandler;
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diff changeset
256 }
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diff changeset
257 if (reason == config.deoptReasonUnresolved) {
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diff changeset
258 return DeoptimizationReason.Unresolved;
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259 }
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diff changeset
260 if (reason == config.deoptReasonJsrMismatch) {
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diff changeset
261 return DeoptimizationReason.JavaSubroutineMismatch;
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diff changeset
262 }
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diff changeset
263 if (reason == config.deoptReasonDiv0Check) {
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diff changeset
264 return DeoptimizationReason.ArithmeticException;
13257
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diff changeset
265 }
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diff changeset
266 if (reason == config.deoptReasonConstraint) {
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267 return DeoptimizationReason.RuntimeConstraint;
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268 }
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269 if (reason == config.deoptReasonLoopLimitCheck) {
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270 return DeoptimizationReason.LoopLimitCheck;
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271 }
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272 if (reason == config.deoptReasonAliasing) {
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273 return DeoptimizationReason.Aliasing;
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274 }
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275 if (reason == config.deoptReasonTransferToInterpreter) {
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276 return DeoptimizationReason.TransferToInterpreter;
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277 }
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278 throw new InternalError(Integer.toHexString(reason));
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279 }
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280
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281 @Override
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282 public long getMemorySize(JavaConstant constant) {
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283 if (constant.getKind() == Kind.Object) {
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284 HotSpotResolvedObjectType lookupJavaType = lookupJavaType(constant);
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285
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286 if (lookupJavaType == null) {
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287 return 0;
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288 } else {
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289 if (lookupJavaType.isArray()) {
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290 // TODO(tw): Add compressed pointer support.
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291 int length = Array.getLength(((HotSpotObjectConstantImpl) constant).object());
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292 ResolvedJavaType elementType = lookupJavaType.getComponentType();
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293 Kind elementKind = elementType.getKind();
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294 final int headerSize = runtime.getArrayBaseOffset(elementKind);
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295 TargetDescription target = runtime.getHostJVMCIBackend().getTarget();
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296 int sizeOfElement = target.getSizeInBytes(elementKind);
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297 int alignment = target.wordSize;
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298 int log2ElementSize = CodeUtil.log2(sizeOfElement);
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299 return computeArrayAllocationSize(length, alignment, headerSize, log2ElementSize);
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300 }
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301 return lookupJavaType.instanceSize();
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302 }
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303 } else {
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304 return constant.getKind().getByteCount();
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305 }
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306 }
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307
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308 /**
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309 * Computes the size of the memory chunk allocated for an array. This size accounts for the
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310 * array header size, body size and any padding after the last element to satisfy object
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311 * alignment requirements.
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312 *
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313 * @param length the number of elements in the array
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314 * @param alignment the object alignment requirement
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315 * @param headerSize the size of the array header
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316 * @param log2ElementSize log2 of the size of an element in the array
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317 */
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318 public static int computeArrayAllocationSize(int length, int alignment, int headerSize, int log2ElementSize) {
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319 int size = (length << log2ElementSize) + headerSize + (alignment - 1);
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320 int mask = ~(alignment - 1);
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321 return size & mask;
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322 }
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Doug Simon <doug.simon@oracle.com>
parents:
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323 }