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annotate graal/com.oracle.jvmci.hotspot/src/com/oracle/jvmci/hotspot/HotSpotMetaAccessProvider.java @ 21552:9579a3c62a9e

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use skeleton findbugs jar containing only SuppresFBWarnings to avoid external dependency for JVMCI classes (JBS:GRAAL-53)
author Doug Simon <doug.simon@oracle.com>
date Tue, 26 May 2015 17:21:29 +0200
parents graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotMetaAccessProvider.java@7f4cb7587f4c
children 48c1ebd24120
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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.*;
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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 import com.oracle.jvmci.common.*;
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34
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35 /**
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36 * HotSpot implementation of {@link MetaAccessProvider}.
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37 */
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38 public class HotSpotMetaAccessProvider implements MetaAccessProvider, HotSpotProxified {
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39
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40 protected final HotSpotJVMCIRuntimeProvider runtime;
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41
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42 public HotSpotMetaAccessProvider(HotSpotJVMCIRuntimeProvider runtime) {
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43 this.runtime = runtime;
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44 }
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45
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46 public ResolvedJavaType lookupJavaType(Class<?> clazz) {
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47 if (clazz == null) {
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48 throw new IllegalArgumentException("Class parameter was null");
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49 }
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50 return runtime.fromClass(clazz);
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51 }
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52
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53 public HotSpotResolvedObjectType lookupJavaType(JavaConstant constant) {
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54 if (constant.isNull() || !(constant instanceof HotSpotObjectConstant)) {
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55 return null;
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56 }
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57 return ((HotSpotObjectConstant) constant).getType();
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58 }
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59
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60 public Signature parseMethodDescriptor(String signature) {
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61 return new HotSpotSignature(runtime, signature);
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62 }
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63
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64 /**
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65 * {@link Field} object of {@link Method#slot}.
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66 */
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67 @SuppressWarnings("javadoc") private Field reflectionMethodSlot = getReflectionSlotField(Method.class);
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68
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69 /**
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70 * {@link Field} object of {@link Constructor#slot}.
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71 */
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72 @SuppressWarnings("javadoc") private Field reflectionConstructorSlot = getReflectionSlotField(Constructor.class);
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73
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74 private static Field getReflectionSlotField(Class<?> reflectionClass) {
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75 try {
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76 Field field = reflectionClass.getDeclaredField("slot");
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77 field.setAccessible(true);
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78 return field;
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79 } catch (NoSuchFieldException | SecurityException e) {
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80 throw new JVMCIError(e);
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81 }
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82 }
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83
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84 public ResolvedJavaMethod lookupJavaMethod(Executable reflectionMethod) {
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85 try {
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86 Class<?> holder = reflectionMethod.getDeclaringClass();
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87 Field slotField = reflectionMethod instanceof Constructor ? reflectionConstructorSlot : reflectionMethodSlot;
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88 final int slot = slotField.getInt(reflectionMethod);
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89 final long metaspaceMethod = runtime.getCompilerToVM().getMetaspaceMethod(holder, slot);
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90 return HotSpotResolvedJavaMethodImpl.fromMetaspace(metaspaceMethod);
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91 } catch (IllegalArgumentException | IllegalAccessException e) {
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92 throw new JVMCIError(e);
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93 }
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94 }
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95
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96 public ResolvedJavaField lookupJavaField(Field reflectionField) {
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97 String name = reflectionField.getName();
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98 Class<?> fieldHolder = reflectionField.getDeclaringClass();
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99 Class<?> fieldType = reflectionField.getType();
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100 // java.lang.reflect.Field's modifiers should be enough here since VM internal modifier bits
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101 // are not used (yet).
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102 final int modifiers = reflectionField.getModifiers();
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103 final long offset = Modifier.isStatic(modifiers) ? unsafe.staticFieldOffset(reflectionField) : unsafe.objectFieldOffset(reflectionField);
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104
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105 HotSpotResolvedObjectType holder = fromObjectClass(fieldHolder);
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106 JavaType type = fromClass(fieldType);
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107
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108 if (offset != -1) {
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109 HotSpotResolvedObjectType resolved = holder;
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110 return resolved.createField(name, type, offset, modifiers);
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111 } else {
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112 throw new JVMCIError("unresolved field %s", reflectionField);
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113 }
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114 }
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115
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116 private static int intMaskRight(int n) {
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117 assert n <= 32;
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118 return n == 32 ? -1 : (1 << n) - 1;
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119 }
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120
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121 @Override
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122 public JavaConstant encodeDeoptActionAndReason(DeoptimizationAction action, DeoptimizationReason reason, int debugId) {
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123 HotSpotVMConfig config = runtime.getConfig();
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124 int actionValue = convertDeoptAction(action);
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125 int reasonValue = convertDeoptReason(reason);
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126 int debugValue = debugId & intMaskRight(config.deoptimizationDebugIdBits);
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127 JavaConstant c = JavaConstant.forInt(~((debugValue << config.deoptimizationDebugIdShift) | (reasonValue << config.deoptimizationReasonShift) | (actionValue << config.deoptimizationActionShift)));
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128 assert c.asInt() < 0;
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129 return c;
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130 }
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131
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132 public DeoptimizationReason decodeDeoptReason(JavaConstant constant) {
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133 HotSpotVMConfig config = runtime.getConfig();
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134 int reasonValue = ((~constant.asInt()) >> config.deoptimizationReasonShift) & intMaskRight(config.deoptimizationReasonBits);
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135 DeoptimizationReason reason = convertDeoptReason(reasonValue);
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136 return reason;
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137 }
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138
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139 public DeoptimizationAction decodeDeoptAction(JavaConstant constant) {
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140 HotSpotVMConfig config = runtime.getConfig();
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141 int actionValue = ((~constant.asInt()) >> config.deoptimizationActionShift) & intMaskRight(config.deoptimizationActionBits);
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142 DeoptimizationAction action = convertDeoptAction(actionValue);
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143 return action;
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144 }
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145
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146 public int decodeDebugId(JavaConstant constant) {
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147 HotSpotVMConfig config = runtime.getConfig();
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Gilles Duboscq <duboscq@ssw.jku.at>
parents: 13641
diff changeset
148 return ((~constant.asInt()) >> config.deoptimizationDebugIdShift) & intMaskRight(config.deoptimizationDebugIdBits);
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149 }
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150
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151 public int convertDeoptAction(DeoptimizationAction action) {
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152 HotSpotVMConfig config = runtime.getConfig();
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153 switch (action) {
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154 case None:
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155 return config.deoptActionNone;
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156 case RecompileIfTooManyDeopts:
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157 return config.deoptActionMaybeRecompile;
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158 case InvalidateReprofile:
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159 return config.deoptActionReinterpret;
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160 case InvalidateRecompile:
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161 return config.deoptActionMakeNotEntrant;
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162 case InvalidateStopCompiling:
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163 return config.deoptActionMakeNotCompilable;
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164 default:
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165 throw new JVMCIError("%s", action);
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166 }
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167 }
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168
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169 public DeoptimizationAction convertDeoptAction(int action) {
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170 HotSpotVMConfig config = runtime.getConfig();
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171 if (action == config.deoptActionNone) {
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172 return DeoptimizationAction.None;
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173 }
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174 if (action == config.deoptActionMaybeRecompile) {
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175 return DeoptimizationAction.RecompileIfTooManyDeopts;
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176 }
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177 if (action == config.deoptActionReinterpret) {
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178 return DeoptimizationAction.InvalidateReprofile;
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179 }
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180 if (action == config.deoptActionMakeNotEntrant) {
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181 return DeoptimizationAction.InvalidateRecompile;
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182 }
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183 if (action == config.deoptActionMakeNotCompilable) {
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184 return DeoptimizationAction.InvalidateStopCompiling;
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185 }
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186 throw new JVMCIError("%d", action);
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187 }
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188
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189 public int convertDeoptReason(DeoptimizationReason reason) {
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190 HotSpotVMConfig config = runtime.getConfig();
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191 switch (reason) {
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192 case None:
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193 return config.deoptReasonNone;
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194 case NullCheckException:
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195 return config.deoptReasonNullCheck;
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196 case BoundsCheckException:
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197 return config.deoptReasonRangeCheck;
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198 case ClassCastException:
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199 return config.deoptReasonClassCheck;
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200 case ArrayStoreException:
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201 return config.deoptReasonArrayCheck;
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202 case UnreachedCode:
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203 return config.deoptReasonUnreached0;
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parents:
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204 case TypeCheckedInliningViolated:
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205 return config.deoptReasonTypeCheckInlining;
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206 case OptimizedTypeCheckViolated:
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207 return config.deoptReasonOptimizedTypeCheck;
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208 case NotCompiledExceptionHandler:
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209 return config.deoptReasonNotCompiledExceptionHandler;
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210 case Unresolved:
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211 return config.deoptReasonUnresolved;
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212 case JavaSubroutineMismatch:
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213 return config.deoptReasonJsrMismatch;
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214 case ArithmeticException:
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215 return config.deoptReasonDiv0Check;
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parents:
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216 case RuntimeConstraint:
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217 return config.deoptReasonConstraint;
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parents:
diff changeset
218 case LoopLimitCheck:
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219 return config.deoptReasonLoopLimitCheck;
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Roland Schatz <roland.schatz@oracle.com>
parents: 12757
diff changeset
220 case Aliasing:
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221 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
222 case TransferToInterpreter:
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Andreas Woess <andreas.woess@jku.at>
parents: 15909
diff changeset
223 return config.deoptReasonTransferToInterpreter;
12429
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parents:
diff changeset
224 default:
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diff changeset
225 throw new JVMCIError("%s", reason);
12429
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parents:
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226 }
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227 }
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228
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diff changeset
229 public DeoptimizationReason convertDeoptReason(int reason) {
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230 HotSpotVMConfig config = runtime.getConfig();
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231 if (reason == config.deoptReasonNone) {
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232 return DeoptimizationReason.None;
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233 }
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234 if (reason == config.deoptReasonNullCheck) {
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235 return DeoptimizationReason.NullCheckException;
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236 }
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237 if (reason == config.deoptReasonRangeCheck) {
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238 return DeoptimizationReason.BoundsCheckException;
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239 }
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240 if (reason == config.deoptReasonClassCheck) {
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241 return DeoptimizationReason.ClassCastException;
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242 }
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diff changeset
243 if (reason == config.deoptReasonArrayCheck) {
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diff changeset
244 return DeoptimizationReason.ArrayStoreException;
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245 }
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diff changeset
246 if (reason == config.deoptReasonUnreached0) {
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247 return DeoptimizationReason.UnreachedCode;
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248 }
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249 if (reason == config.deoptReasonTypeCheckInlining) {
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250 return DeoptimizationReason.TypeCheckedInliningViolated;
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251 }
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252 if (reason == config.deoptReasonOptimizedTypeCheck) {
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253 return DeoptimizationReason.OptimizedTypeCheckViolated;
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254 }
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255 if (reason == config.deoptReasonNotCompiledExceptionHandler) {
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256 return DeoptimizationReason.NotCompiledExceptionHandler;
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257 }
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diff changeset
258 if (reason == config.deoptReasonUnresolved) {
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diff changeset
259 return DeoptimizationReason.Unresolved;
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260 }
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diff changeset
261 if (reason == config.deoptReasonJsrMismatch) {
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262 return DeoptimizationReason.JavaSubroutineMismatch;
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263 }
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diff changeset
264 if (reason == config.deoptReasonDiv0Check) {
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265 return DeoptimizationReason.ArithmeticException;
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266 }
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267 if (reason == config.deoptReasonConstraint) {
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268 return DeoptimizationReason.RuntimeConstraint;
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269 }
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270 if (reason == config.deoptReasonLoopLimitCheck) {
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271 return DeoptimizationReason.LoopLimitCheck;
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272 }
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273 if (reason == config.deoptReasonAliasing) {
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274 return DeoptimizationReason.Aliasing;
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275 }
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276 if (reason == config.deoptReasonTransferToInterpreter) {
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277 return DeoptimizationReason.TransferToInterpreter;
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278 }
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279 throw new JVMCIError("%x", reason);
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280 }
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281
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282 @Override
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283 public long getMemorySize(JavaConstant constant) {
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284 if (constant.getKind() == Kind.Object) {
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285 HotSpotResolvedObjectType lookupJavaType = lookupJavaType(constant);
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286
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287 if (lookupJavaType == null) {
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288 return 0;
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289 } else {
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290 if (lookupJavaType.isArray()) {
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291 // TODO(tw): Add compressed pointer support.
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292 int length = Array.getLength(((HotSpotObjectConstantImpl) constant).object());
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293 ResolvedJavaType elementType = lookupJavaType.getComponentType();
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294 Kind elementKind = elementType.getKind();
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295 final int headerSize = runtime.getArrayBaseOffset(elementKind);
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296 TargetDescription target = runtime.getHostJVMCIBackend().getTarget();
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297 int sizeOfElement = target.getSizeInBytes(elementKind);
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298 int alignment = target.wordSize;
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299 int log2ElementSize = CodeUtil.log2(sizeOfElement);
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300 return computeArrayAllocationSize(length, alignment, headerSize, log2ElementSize);
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301 }
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302 return lookupJavaType.instanceSize();
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303 }
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304 } else {
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305 return constant.getKind().getByteCount();
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306 }
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307 }
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308
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309 /**
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310 * Computes the size of the memory chunk allocated for an array. This size accounts for the
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311 * array header size, body size and any padding after the last element to satisfy object
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312 * alignment requirements.
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313 *
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314 * @param length the number of elements in the array
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315 * @param alignment the object alignment requirement
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316 * @param headerSize the size of the array header
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317 * @param log2ElementSize log2 of the size of an element in the array
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318 */
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319 public static int computeArrayAllocationSize(int length, int alignment, int headerSize, int log2ElementSize) {
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320 int size = (length << log2ElementSize) + headerSize + (alignment - 1);
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321 int mask = ~(alignment - 1);
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322 return size & mask;
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323 }
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324 }