Mercurial > hg > graal-compiler
annotate graal/com.oracle.jvmci.hotspot/src/com/oracle/jvmci/hotspot/HotSpotMetaAccessProvider.java @ 21673:5024c80224c7
moved com.oracle.graal.[amd64|sparc] to com.oracle.jvmci.[amd64|sparc] (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 02 Jun 2015 22:11:52 +0200 |
parents | 6166968c6359 |
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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.jvmci.hotspot; |
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24 |
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25 import static com.oracle.jvmci.common.UnsafeAccess.*; |
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26 import static com.oracle.jvmci.hotspot.HotSpotResolvedJavaType.*; |
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27 import static com.oracle.jvmci.hotspot.HotSpotResolvedObjectTypeImpl.*; |
13263 | 28 |
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29 import java.lang.reflect.*; |
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30 |
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31 import com.oracle.jvmci.code.*; |
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32 import com.oracle.jvmci.common.*; |
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33 import com.oracle.jvmci.meta.*; |
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34 |
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35 // JaCoCo Exclude |
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36 |
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37 /** |
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38 * HotSpot implementation of {@link MetaAccessProvider}. |
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39 */ |
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40 public class HotSpotMetaAccessProvider implements MetaAccessProvider, HotSpotProxified { |
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41 |
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42 protected final HotSpotJVMCIRuntimeProvider runtime; |
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43 |
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44 public HotSpotMetaAccessProvider(HotSpotJVMCIRuntimeProvider runtime) { |
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45 this.runtime = runtime; |
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46 } |
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47 |
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48 public ResolvedJavaType lookupJavaType(Class<?> clazz) { |
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49 if (clazz == null) { |
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50 throw new IllegalArgumentException("Class parameter was null"); |
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51 } |
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52 return runtime.fromClass(clazz); |
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53 } |
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54 |
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55 public HotSpotResolvedObjectType lookupJavaType(JavaConstant constant) { |
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56 if (constant.isNull() || !(constant instanceof HotSpotObjectConstant)) { |
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57 return null; |
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58 } |
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59 return ((HotSpotObjectConstant) constant).getType(); |
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60 } |
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61 |
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62 public Signature parseMethodDescriptor(String signature) { |
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63 return new HotSpotSignature(runtime, signature); |
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64 } |
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65 |
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66 /** |
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67 * {@link Field} object of {@link Method#slot}. |
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68 */ |
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69 @SuppressWarnings("javadoc") private Field reflectionMethodSlot = getReflectionSlotField(Method.class); |
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70 |
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71 /** |
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72 * {@link Field} object of {@link Constructor#slot}. |
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73 */ |
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74 @SuppressWarnings("javadoc") private Field reflectionConstructorSlot = getReflectionSlotField(Constructor.class); |
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75 |
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76 private static Field getReflectionSlotField(Class<?> reflectionClass) { |
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77 try { |
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78 Field field = reflectionClass.getDeclaredField("slot"); |
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79 field.setAccessible(true); |
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80 return field; |
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81 } catch (NoSuchFieldException | SecurityException e) { |
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82 throw new JVMCIError(e); |
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83 } |
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84 } |
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85 |
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86 public ResolvedJavaMethod lookupJavaMethod(Executable reflectionMethod) { |
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87 try { |
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88 Class<?> holder = reflectionMethod.getDeclaringClass(); |
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89 Field slotField = reflectionMethod instanceof Constructor ? reflectionConstructorSlot : reflectionMethodSlot; |
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90 final int slot = slotField.getInt(reflectionMethod); |
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91 final long metaspaceMethod = runtime.getCompilerToVM().getMetaspaceMethod(holder, slot); |
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92 return HotSpotResolvedJavaMethodImpl.fromMetaspace(metaspaceMethod); |
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93 } catch (IllegalArgumentException | IllegalAccessException e) { |
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94 throw new JVMCIError(e); |
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95 } |
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96 } |
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97 |
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98 public ResolvedJavaField lookupJavaField(Field reflectionField) { |
13263 | 99 String name = reflectionField.getName(); |
100 Class<?> fieldHolder = reflectionField.getDeclaringClass(); | |
101 Class<?> fieldType = reflectionField.getType(); | |
102 // java.lang.reflect.Field's modifiers should be enough here since VM internal modifier bits | |
103 // are not used (yet). | |
104 final int modifiers = reflectionField.getModifiers(); | |
105 final long offset = Modifier.isStatic(modifiers) ? unsafe.staticFieldOffset(reflectionField) : unsafe.objectFieldOffset(reflectionField); | |
106 | |
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107 HotSpotResolvedObjectType holder = fromObjectClass(fieldHolder); |
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108 JavaType type = fromClass(fieldType); |
13263 | 109 |
110 if (offset != -1) { | |
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111 HotSpotResolvedObjectType resolved = holder; |
14012 | 112 return resolved.createField(name, type, offset, modifiers); |
13263 | 113 } else { |
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114 throw new JVMCIError("unresolved field %s", reflectionField); |
13263 | 115 } |
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116 } |
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117 |
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118 private static int intMaskRight(int n) { |
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119 assert n <= 32; |
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120 return n == 32 ? -1 : (1 << n) - 1; |
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121 } |
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122 |
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123 @Override |
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124 public JavaConstant encodeDeoptActionAndReason(DeoptimizationAction action, DeoptimizationReason reason, int debugId) { |
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125 HotSpotVMConfig config = runtime.getConfig(); |
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126 int actionValue = convertDeoptAction(action); |
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127 int reasonValue = convertDeoptReason(reason); |
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128 int debugValue = debugId & intMaskRight(config.deoptimizationDebugIdBits); |
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129 JavaConstant c = JavaConstant.forInt(~((debugValue << config.deoptimizationDebugIdShift) | (reasonValue << config.deoptimizationReasonShift) | (actionValue << config.deoptimizationActionShift))); |
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130 assert c.asInt() < 0; |
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131 return c; |
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132 } |
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133 |
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134 public DeoptimizationReason decodeDeoptReason(JavaConstant constant) { |
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135 HotSpotVMConfig config = runtime.getConfig(); |
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136 int reasonValue = ((~constant.asInt()) >> config.deoptimizationReasonShift) & intMaskRight(config.deoptimizationReasonBits); |
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137 DeoptimizationReason reason = convertDeoptReason(reasonValue); |
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138 return reason; |
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139 } |
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140 |
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141 public DeoptimizationAction decodeDeoptAction(JavaConstant constant) { |
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142 HotSpotVMConfig config = runtime.getConfig(); |
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143 int actionValue = ((~constant.asInt()) >> config.deoptimizationActionShift) & intMaskRight(config.deoptimizationActionBits); |
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144 DeoptimizationAction action = convertDeoptAction(actionValue); |
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145 return action; |
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146 } |
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147 |
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148 public int decodeDebugId(JavaConstant constant) { |
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149 HotSpotVMConfig config = runtime.getConfig(); |
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150 return ((~constant.asInt()) >> config.deoptimizationDebugIdShift) & intMaskRight(config.deoptimizationDebugIdBits); |
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151 } |
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152 |
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153 public int convertDeoptAction(DeoptimizationAction action) { |
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154 HotSpotVMConfig config = runtime.getConfig(); |
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155 switch (action) { |
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156 case None: |
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157 return config.deoptActionNone; |
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158 case RecompileIfTooManyDeopts: |
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159 return config.deoptActionMaybeRecompile; |
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160 case InvalidateReprofile: |
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161 return config.deoptActionReinterpret; |
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162 case InvalidateRecompile: |
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163 return config.deoptActionMakeNotEntrant; |
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164 case InvalidateStopCompiling: |
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165 return config.deoptActionMakeNotCompilable; |
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166 default: |
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167 throw new JVMCIError("%s", action); |
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168 } |
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169 } |
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170 |
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171 public DeoptimizationAction convertDeoptAction(int action) { |
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172 HotSpotVMConfig config = runtime.getConfig(); |
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173 if (action == config.deoptActionNone) { |
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174 return DeoptimizationAction.None; |
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175 } |
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176 if (action == config.deoptActionMaybeRecompile) { |
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177 return DeoptimizationAction.RecompileIfTooManyDeopts; |
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178 } |
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179 if (action == config.deoptActionReinterpret) { |
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180 return DeoptimizationAction.InvalidateReprofile; |
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181 } |
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182 if (action == config.deoptActionMakeNotEntrant) { |
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183 return DeoptimizationAction.InvalidateRecompile; |
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184 } |
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185 if (action == config.deoptActionMakeNotCompilable) { |
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186 return DeoptimizationAction.InvalidateStopCompiling; |
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187 } |
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188 throw new JVMCIError("%d", action); |
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189 } |
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190 |
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191 public int convertDeoptReason(DeoptimizationReason reason) { |
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192 HotSpotVMConfig config = runtime.getConfig(); |
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193 switch (reason) { |
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194 case None: |
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195 return config.deoptReasonNone; |
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196 case NullCheckException: |
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197 return config.deoptReasonNullCheck; |
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198 case BoundsCheckException: |
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199 return config.deoptReasonRangeCheck; |
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200 case ClassCastException: |
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201 return config.deoptReasonClassCheck; |
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202 case ArrayStoreException: |
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203 return config.deoptReasonArrayCheck; |
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204 case UnreachedCode: |
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205 return config.deoptReasonUnreached0; |
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206 case TypeCheckedInliningViolated: |
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207 return config.deoptReasonTypeCheckInlining; |
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208 case OptimizedTypeCheckViolated: |
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209 return config.deoptReasonOptimizedTypeCheck; |
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210 case NotCompiledExceptionHandler: |
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211 return config.deoptReasonNotCompiledExceptionHandler; |
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212 case Unresolved: |
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213 return config.deoptReasonUnresolved; |
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214 case JavaSubroutineMismatch: |
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215 return config.deoptReasonJsrMismatch; |
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216 case ArithmeticException: |
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217 return config.deoptReasonDiv0Check; |
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218 case RuntimeConstraint: |
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219 return config.deoptReasonConstraint; |
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220 case LoopLimitCheck: |
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221 return config.deoptReasonLoopLimitCheck; |
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222 case Aliasing: |
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223 return config.deoptReasonAliasing; |
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224 case TransferToInterpreter: |
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225 return config.deoptReasonTransferToInterpreter; |
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226 default: |
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227 throw new JVMCIError("%s", reason); |
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228 } |
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229 } |
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230 |
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231 public DeoptimizationReason convertDeoptReason(int reason) { |
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232 HotSpotVMConfig config = runtime.getConfig(); |
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233 if (reason == config.deoptReasonNone) { |
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234 return DeoptimizationReason.None; |
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235 } |
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236 if (reason == config.deoptReasonNullCheck) { |
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237 return DeoptimizationReason.NullCheckException; |
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238 } |
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239 if (reason == config.deoptReasonRangeCheck) { |
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240 return DeoptimizationReason.BoundsCheckException; |
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241 } |
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242 if (reason == config.deoptReasonClassCheck) { |
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243 return DeoptimizationReason.ClassCastException; |
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244 } |
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245 if (reason == config.deoptReasonArrayCheck) { |
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246 return DeoptimizationReason.ArrayStoreException; |
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247 } |
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248 if (reason == config.deoptReasonUnreached0) { |
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249 return DeoptimizationReason.UnreachedCode; |
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250 } |
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251 if (reason == config.deoptReasonTypeCheckInlining) { |
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252 return DeoptimizationReason.TypeCheckedInliningViolated; |
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253 } |
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254 if (reason == config.deoptReasonOptimizedTypeCheck) { |
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255 return DeoptimizationReason.OptimizedTypeCheckViolated; |
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256 } |
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257 if (reason == config.deoptReasonNotCompiledExceptionHandler) { |
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258 return DeoptimizationReason.NotCompiledExceptionHandler; |
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259 } |
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260 if (reason == config.deoptReasonUnresolved) { |
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261 return DeoptimizationReason.Unresolved; |
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262 } |
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263 if (reason == config.deoptReasonJsrMismatch) { |
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264 return DeoptimizationReason.JavaSubroutineMismatch; |
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265 } |
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266 if (reason == config.deoptReasonDiv0Check) { |
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267 return DeoptimizationReason.ArithmeticException; |
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268 } |
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269 if (reason == config.deoptReasonConstraint) { |
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270 return DeoptimizationReason.RuntimeConstraint; |
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271 } |
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272 if (reason == config.deoptReasonLoopLimitCheck) { |
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273 return DeoptimizationReason.LoopLimitCheck; |
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274 } |
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275 if (reason == config.deoptReasonAliasing) { |
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276 return DeoptimizationReason.Aliasing; |
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277 } |
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278 if (reason == config.deoptReasonTransferToInterpreter) { |
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279 return DeoptimizationReason.TransferToInterpreter; |
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280 } |
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281 throw new JVMCIError("%x", reason); |
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282 } |
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283 |
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284 @Override |
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285 public long getMemorySize(JavaConstant constant) { |
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286 if (constant.getKind() == Kind.Object) { |
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287 HotSpotResolvedObjectType lookupJavaType = lookupJavaType(constant); |
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288 |
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289 if (lookupJavaType == null) { |
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290 return 0; |
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291 } else { |
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292 if (lookupJavaType.isArray()) { |
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293 // TODO(tw): Add compressed pointer support. |
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294 int length = Array.getLength(((HotSpotObjectConstantImpl) constant).object()); |
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295 ResolvedJavaType elementType = lookupJavaType.getComponentType(); |
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296 Kind elementKind = elementType.getKind(); |
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297 final int headerSize = runtime.getArrayBaseOffset(elementKind); |
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298 TargetDescription target = runtime.getHostJVMCIBackend().getTarget(); |
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299 int sizeOfElement = target.getSizeInBytes(elementKind); |
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300 int alignment = target.wordSize; |
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301 int log2ElementSize = CodeUtil.log2(sizeOfElement); |
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302 return computeArrayAllocationSize(length, alignment, headerSize, log2ElementSize); |
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303 } |
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304 return lookupJavaType.instanceSize(); |
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305 } |
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306 } else { |
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307 return constant.getKind().getByteCount(); |
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308 } |
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309 } |
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310 |
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311 /** |
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312 * Computes the size of the memory chunk allocated for an array. This size accounts for the |
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313 * array header size, body size and any padding after the last element to satisfy object |
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314 * alignment requirements. |
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315 * |
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316 * @param length the number of elements in the array |
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317 * @param alignment the object alignment requirement |
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318 * @param headerSize the size of the array header |
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319 * @param log2ElementSize log2 of the size of an element in the array |
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320 */ |
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321 public static int computeArrayAllocationSize(int length, int alignment, int headerSize, int log2ElementSize) { |
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322 int size = (length << log2ElementSize) + headerSize + (alignment - 1); |
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323 int mask = ~(alignment - 1); |
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324 return size & mask; |
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325 } |
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326 } |