Mercurial > hg > graal-jvmci-8
annotate jvmci/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotMetaAccessProvider.java @ 23785:5cf445d2acf6 jvmci-0.22
Exported elements referring to inaccessible types in jdk.vm.ci (JDK-8167180)
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 11 Oct 2016 22:13:23 +0200 |
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1 /* |
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2 * Copyright (c) 2011, 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.hotspot.HotSpotJVMCIRuntimeProvider.getArrayBaseOffset; |
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26 import static jdk.vm.ci.hotspot.HotSpotJVMCIRuntimeProvider.getArrayIndexScale; |
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27 import static jdk.vm.ci.hotspot.HotSpotResolvedObjectTypeImpl.fromObjectClass; |
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28 import static jdk.vm.ci.hotspot.UnsafeAccess.UNSAFE; |
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30 import java.lang.reflect.Array; |
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31 import java.lang.reflect.Executable; |
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32 import java.lang.reflect.Field; |
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33 import java.lang.reflect.Modifier; |
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34 import java.util.Objects; |
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35 |
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36 import jdk.vm.ci.code.CodeUtil; |
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37 import jdk.vm.ci.code.TargetDescription; |
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38 import jdk.vm.ci.common.JVMCIError; |
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39 import jdk.vm.ci.meta.DeoptimizationAction; |
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40 import jdk.vm.ci.meta.DeoptimizationReason; |
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41 import jdk.vm.ci.meta.JavaConstant; |
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42 import jdk.vm.ci.meta.JavaKind; |
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43 import jdk.vm.ci.meta.MetaAccessProvider; |
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44 import jdk.vm.ci.meta.ResolvedJavaField; |
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45 import jdk.vm.ci.meta.ResolvedJavaMethod; |
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46 import jdk.vm.ci.meta.ResolvedJavaType; |
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47 import jdk.vm.ci.meta.Signature; |
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48 |
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49 // JaCoCo Exclude |
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50 |
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51 /** |
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52 * HotSpot implementation of {@link MetaAccessProvider}. |
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53 */ |
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54 public class HotSpotMetaAccessProvider implements MetaAccessProvider { |
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55 |
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56 protected final HotSpotJVMCIRuntimeProvider runtime; |
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57 |
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58 public HotSpotMetaAccessProvider(HotSpotJVMCIRuntimeProvider runtime) { |
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59 this.runtime = runtime; |
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60 } |
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61 |
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62 public ResolvedJavaType lookupJavaType(Class<?> clazz) { |
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63 if (clazz == null) { |
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64 throw new IllegalArgumentException("Class parameter was null"); |
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65 } |
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66 return runtime.fromClass(clazz); |
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67 } |
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68 |
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69 public HotSpotResolvedObjectType lookupJavaType(JavaConstant constant) { |
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70 if (constant.isNull() || !(constant instanceof HotSpotObjectConstant)) { |
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71 return null; |
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72 } |
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73 return ((HotSpotObjectConstant) constant).getType(); |
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74 } |
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75 |
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76 public Signature parseMethodDescriptor(String signature) { |
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77 return new HotSpotSignature(runtime, signature); |
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78 } |
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79 |
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80 public ResolvedJavaMethod lookupJavaMethod(Executable reflectionMethod) { |
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81 return runtime.getCompilerToVM().asResolvedJavaMethod(Objects.requireNonNull(reflectionMethod)); |
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82 } |
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83 |
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84 public ResolvedJavaField lookupJavaField(Field reflectionField) { |
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85 Class<?> fieldHolder = reflectionField.getDeclaringClass(); |
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87 HotSpotResolvedObjectType holder = fromObjectClass(fieldHolder); |
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88 if (Modifier.isStatic(reflectionField.getModifiers())) { |
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89 final long offset = UNSAFE.staticFieldOffset(reflectionField); |
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90 for (ResolvedJavaField field : holder.getStaticFields()) { |
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91 if (offset == ((HotSpotResolvedJavaField) field).offset()) { |
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92 return field; |
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93 } |
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94 } |
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95 } else { |
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96 final long offset = UNSAFE.objectFieldOffset(reflectionField); |
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97 for (ResolvedJavaField field : holder.getInstanceFields(false)) { |
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98 if (offset == ((HotSpotResolvedJavaField) field).offset()) { |
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99 return field; |
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100 } |
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101 } |
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102 } |
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104 throw new JVMCIError("unresolved field %s", reflectionField); |
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105 } |
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106 |
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107 private static int intMaskRight(int n) { |
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108 assert n <= 32; |
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109 return n == 32 ? -1 : (1 << n) - 1; |
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110 } |
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111 |
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112 @Override |
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113 public JavaConstant encodeDeoptActionAndReason(DeoptimizationAction action, DeoptimizationReason reason, int debugId) { |
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114 HotSpotVMConfig config = runtime.getConfig(); |
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115 int actionValue = convertDeoptAction(action); |
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116 int reasonValue = convertDeoptReason(reason); |
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117 int debugValue = debugId & intMaskRight(config.deoptimizationDebugIdBits); |
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118 JavaConstant c = JavaConstant.forInt( |
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119 ~((debugValue << config.deoptimizationDebugIdShift) | (reasonValue << config.deoptimizationReasonShift) | (actionValue << config.deoptimizationActionShift))); |
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120 assert c.asInt() < 0; |
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121 return c; |
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122 } |
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123 |
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124 public DeoptimizationReason decodeDeoptReason(JavaConstant constant) { |
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125 HotSpotVMConfig config = runtime.getConfig(); |
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126 int reasonValue = ((~constant.asInt()) >> config.deoptimizationReasonShift) & intMaskRight(config.deoptimizationReasonBits); |
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127 DeoptimizationReason reason = convertDeoptReason(reasonValue); |
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128 return reason; |
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129 } |
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130 |
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131 public DeoptimizationAction decodeDeoptAction(JavaConstant constant) { |
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132 HotSpotVMConfig config = runtime.getConfig(); |
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133 int actionValue = ((~constant.asInt()) >> config.deoptimizationActionShift) & intMaskRight(config.deoptimizationActionBits); |
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134 DeoptimizationAction action = convertDeoptAction(actionValue); |
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135 return action; |
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136 } |
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137 |
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138 public int decodeDebugId(JavaConstant constant) { |
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139 HotSpotVMConfig config = runtime.getConfig(); |
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140 return ((~constant.asInt()) >> config.deoptimizationDebugIdShift) & intMaskRight(config.deoptimizationDebugIdBits); |
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141 } |
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142 |
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143 public int convertDeoptAction(DeoptimizationAction action) { |
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144 HotSpotVMConfig config = runtime.getConfig(); |
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145 switch (action) { |
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146 case None: |
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147 return config.deoptActionNone; |
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148 case RecompileIfTooManyDeopts: |
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149 return config.deoptActionMaybeRecompile; |
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150 case InvalidateReprofile: |
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151 return config.deoptActionReinterpret; |
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152 case InvalidateRecompile: |
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153 return config.deoptActionMakeNotEntrant; |
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154 case InvalidateStopCompiling: |
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155 return config.deoptActionMakeNotCompilable; |
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156 default: |
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157 throw new JVMCIError("%s", action); |
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158 } |
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159 } |
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160 |
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161 public DeoptimizationAction convertDeoptAction(int action) { |
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162 HotSpotVMConfig config = runtime.getConfig(); |
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163 if (action == config.deoptActionNone) { |
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164 return DeoptimizationAction.None; |
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165 } |
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166 if (action == config.deoptActionMaybeRecompile) { |
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167 return DeoptimizationAction.RecompileIfTooManyDeopts; |
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168 } |
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169 if (action == config.deoptActionReinterpret) { |
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170 return DeoptimizationAction.InvalidateReprofile; |
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171 } |
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172 if (action == config.deoptActionMakeNotEntrant) { |
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173 return DeoptimizationAction.InvalidateRecompile; |
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174 } |
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175 if (action == config.deoptActionMakeNotCompilable) { |
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176 return DeoptimizationAction.InvalidateStopCompiling; |
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177 } |
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178 throw new JVMCIError("%d", action); |
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179 } |
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180 |
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181 public int convertDeoptReason(DeoptimizationReason reason) { |
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182 HotSpotVMConfig config = runtime.getConfig(); |
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183 switch (reason) { |
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184 case None: |
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185 return config.deoptReasonNone; |
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186 case NullCheckException: |
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187 return config.deoptReasonNullCheck; |
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188 case BoundsCheckException: |
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189 return config.deoptReasonRangeCheck; |
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190 case ClassCastException: |
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191 return config.deoptReasonClassCheck; |
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192 case ArrayStoreException: |
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193 return config.deoptReasonArrayCheck; |
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194 case UnreachedCode: |
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195 return config.deoptReasonUnreached0; |
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196 case TypeCheckedInliningViolated: |
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197 return config.deoptReasonTypeCheckInlining; |
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198 case OptimizedTypeCheckViolated: |
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199 return config.deoptReasonOptimizedTypeCheck; |
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200 case NotCompiledExceptionHandler: |
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201 return config.deoptReasonNotCompiledExceptionHandler; |
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202 case Unresolved: |
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203 return config.deoptReasonUnresolved; |
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204 case JavaSubroutineMismatch: |
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205 return config.deoptReasonJsrMismatch; |
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206 case ArithmeticException: |
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207 return config.deoptReasonDiv0Check; |
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208 case RuntimeConstraint: |
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209 return config.deoptReasonConstraint; |
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210 case LoopLimitCheck: |
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211 return config.deoptReasonLoopLimitCheck; |
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212 case Aliasing: |
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213 return config.deoptReasonAliasing; |
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214 case TransferToInterpreter: |
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215 return config.deoptReasonTransferToInterpreter; |
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216 default: |
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217 throw new JVMCIError("%s", reason); |
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218 } |
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219 } |
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220 |
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221 public DeoptimizationReason convertDeoptReason(int reason) { |
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222 HotSpotVMConfig config = runtime.getConfig(); |
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223 if (reason == config.deoptReasonNone) { |
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224 return DeoptimizationReason.None; |
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225 } |
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226 if (reason == config.deoptReasonNullCheck) { |
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227 return DeoptimizationReason.NullCheckException; |
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228 } |
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229 if (reason == config.deoptReasonRangeCheck) { |
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230 return DeoptimizationReason.BoundsCheckException; |
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231 } |
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232 if (reason == config.deoptReasonClassCheck) { |
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233 return DeoptimizationReason.ClassCastException; |
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234 } |
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235 if (reason == config.deoptReasonArrayCheck) { |
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236 return DeoptimizationReason.ArrayStoreException; |
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237 } |
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238 if (reason == config.deoptReasonUnreached0) { |
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239 return DeoptimizationReason.UnreachedCode; |
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240 } |
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241 if (reason == config.deoptReasonTypeCheckInlining) { |
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242 return DeoptimizationReason.TypeCheckedInliningViolated; |
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243 } |
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244 if (reason == config.deoptReasonOptimizedTypeCheck) { |
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245 return DeoptimizationReason.OptimizedTypeCheckViolated; |
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246 } |
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247 if (reason == config.deoptReasonNotCompiledExceptionHandler) { |
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248 return DeoptimizationReason.NotCompiledExceptionHandler; |
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249 } |
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250 if (reason == config.deoptReasonUnresolved) { |
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251 return DeoptimizationReason.Unresolved; |
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252 } |
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253 if (reason == config.deoptReasonJsrMismatch) { |
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254 return DeoptimizationReason.JavaSubroutineMismatch; |
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255 } |
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256 if (reason == config.deoptReasonDiv0Check) { |
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257 return DeoptimizationReason.ArithmeticException; |
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258 } |
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259 if (reason == config.deoptReasonConstraint) { |
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260 return DeoptimizationReason.RuntimeConstraint; |
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261 } |
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262 if (reason == config.deoptReasonLoopLimitCheck) { |
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263 return DeoptimizationReason.LoopLimitCheck; |
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264 } |
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265 if (reason == config.deoptReasonAliasing) { |
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266 return DeoptimizationReason.Aliasing; |
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267 } |
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268 if (reason == config.deoptReasonTransferToInterpreter) { |
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269 return DeoptimizationReason.TransferToInterpreter; |
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270 } |
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271 throw new JVMCIError("%x", reason); |
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272 } |
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273 |
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274 @Override |
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275 public long getMemorySize(JavaConstant constant) { |
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276 if (constant.getJavaKind() == JavaKind.Object) { |
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277 HotSpotResolvedObjectType lookupJavaType = lookupJavaType(constant); |
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278 |
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279 if (lookupJavaType == null) { |
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280 return 0; |
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281 } else { |
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282 if (lookupJavaType.isArray()) { |
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283 int length = Array.getLength(((HotSpotObjectConstantImpl) constant).object()); |
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284 ResolvedJavaType elementType = lookupJavaType.getComponentType(); |
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285 JavaKind elementKind = elementType.getJavaKind(); |
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286 final int headerSize = getArrayBaseOffset(elementKind); |
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287 TargetDescription target = runtime.getHostJVMCIBackend().getTarget(); |
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288 int sizeOfElement = getArrayIndexScale(elementKind); |
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289 int alignment = target.wordSize; |
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290 int log2ElementSize = CodeUtil.log2(sizeOfElement); |
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291 return computeArrayAllocationSize(length, alignment, headerSize, log2ElementSize); |
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292 } |
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293 return lookupJavaType.instanceSize(); |
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294 } |
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295 } else { |
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296 return constant.getJavaKind().getByteCount(); |
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297 } |
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298 } |
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299 |
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300 /** |
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301 * Computes the size of the memory chunk allocated for an array. This size accounts for the |
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302 * array header size, body size and any padding after the last element to satisfy object |
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303 * alignment requirements. |
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304 * |
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305 * @param length the number of elements in the array |
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306 * @param alignment the object alignment requirement |
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307 * @param headerSize the size of the array header |
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308 * @param log2ElementSize log2 of the size of an element in the array |
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309 */ |
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310 public static int computeArrayAllocationSize(int length, int alignment, int headerSize, int log2ElementSize) { |
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311 int size = (length << log2ElementSize) + headerSize + (alignment - 1); |
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312 int mask = ~(alignment - 1); |
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313 return size & mask; |
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314 } |
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315 } |