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annotate jvmci/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotMetaAccessProvider.java @ 23322:f8178417d018

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Expose SharedRuntime::throw_and_post_jvmti_exception to JVMCI compilers.
author Roland Schatz <roland.schatz@oracle.com>
date Mon, 14 Mar 2016 11:58:48 +0100
parents c0df579bf9db
children 1c4b6a7f1917
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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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29
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30 import java.lang.reflect.Array;
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31 import java.lang.reflect.Constructor;
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32 import java.lang.reflect.Executable;
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33 import java.lang.reflect.Field;
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34 import java.lang.reflect.Method;
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35 import java.lang.reflect.Modifier;
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36
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37 import jdk.vm.ci.code.CodeUtil;
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38 import jdk.vm.ci.code.TargetDescription;
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39 import jdk.vm.ci.common.JVMCIError;
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40 import jdk.vm.ci.meta.DeoptimizationAction;
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41 import jdk.vm.ci.meta.DeoptimizationReason;
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42 import jdk.vm.ci.meta.JavaConstant;
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43 import jdk.vm.ci.meta.JavaKind;
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44 import jdk.vm.ci.meta.MetaAccessProvider;
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45 import jdk.vm.ci.meta.ResolvedJavaField;
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46 import jdk.vm.ci.meta.ResolvedJavaMethod;
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47 import jdk.vm.ci.meta.ResolvedJavaType;
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48 import jdk.vm.ci.meta.Signature;
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49
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50 // JaCoCo Exclude
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51
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52 /**
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53 * HotSpot implementation of {@link MetaAccessProvider}.
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54 */
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55 public class HotSpotMetaAccessProvider implements MetaAccessProvider, HotSpotProxified {
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56
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57 protected final HotSpotJVMCIRuntimeProvider runtime;
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58
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59 public HotSpotMetaAccessProvider(HotSpotJVMCIRuntimeProvider runtime) {
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60 this.runtime = runtime;
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61 }
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62
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63 public ResolvedJavaType lookupJavaType(Class<?> clazz) {
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64 if (clazz == null) {
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65 throw new IllegalArgumentException("Class parameter was null");
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66 }
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67 return runtime.fromClass(clazz);
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68 }
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69
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70 public HotSpotResolvedObjectType lookupJavaType(JavaConstant constant) {
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71 if (constant.isNull() || !(constant instanceof HotSpotObjectConstant)) {
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72 return null;
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73 }
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74 return ((HotSpotObjectConstant) constant).getType();
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75 }
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76
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77 public Signature parseMethodDescriptor(String signature) {
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78 return new HotSpotSignature(runtime, signature);
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79 }
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80
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81 public HotSpotSymbol lookupSymbol(String symbol) {
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82 long pointer = runtime.getCompilerToVM().lookupSymbol(symbol);
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83 if (pointer == 0) {
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84 return null;
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85 } else {
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86 return new HotSpotSymbol(symbol, pointer);
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87 }
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88 }
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89
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90 /**
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91 * {@link Field} object of {@link Method#slot}.
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92 */
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93 private Field reflectionMethodSlot = getReflectionSlotField(Method.class);
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94
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95 /**
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96 * {@link Field} object of {@link Constructor#slot}.
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97 */
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98 private Field reflectionConstructorSlot = getReflectionSlotField(Constructor.class);
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99
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100 private static Field getReflectionSlotField(Class<?> reflectionClass) {
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101 try {
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102 Field field = reflectionClass.getDeclaredField("slot");
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103 field.setAccessible(true);
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104 return field;
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105 } catch (NoSuchFieldException | SecurityException e) {
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106 throw new JVMCIError(e);
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107 }
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108 }
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109
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110 public ResolvedJavaMethod lookupJavaMethod(Executable reflectionMethod) {
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111 try {
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112 Class<?> holder = reflectionMethod.getDeclaringClass();
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113 Field slotField = reflectionMethod instanceof Constructor ? reflectionConstructorSlot : reflectionMethodSlot;
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114 final int slot = slotField.getInt(reflectionMethod);
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115 return runtime.getCompilerToVM().getResolvedJavaMethodAtSlot(holder, slot);
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116 } catch (IllegalArgumentException | IllegalAccessException e) {
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117 throw new JVMCIError(e);
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118 }
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119 }
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120
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121 public ResolvedJavaField lookupJavaField(Field reflectionField) {
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122 Class<?> fieldHolder = reflectionField.getDeclaringClass();
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123
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124 HotSpotResolvedObjectType holder = fromObjectClass(fieldHolder);
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125 if (Modifier.isStatic(reflectionField.getModifiers())) {
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126 final long offset = UNSAFE.staticFieldOffset(reflectionField);
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127 for (ResolvedJavaField field : holder.getStaticFields()) {
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128 if (offset == ((HotSpotResolvedJavaField) field).offset()) {
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129 return field;
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130 }
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131 }
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diff changeset
132 } else {
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133 final long offset = UNSAFE.objectFieldOffset(reflectionField);
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134 for (ResolvedJavaField field : holder.getInstanceFields(false)) {
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diff changeset
135 if (offset == ((HotSpotResolvedJavaField) field).offset()) {
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diff changeset
136 return field;
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137 }
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parents: 23315
diff changeset
138 }
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diff changeset
139 }
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140
23316
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141 throw new JVMCIError("unresolved field %s", reflectionField);
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142 }
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143
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diff changeset
144 private static int intMaskRight(int n) {
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145 assert n <= 32;
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146 return n == 32 ? -1 : (1 << n) - 1;
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147 }
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148
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149 @Override
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150 public JavaConstant encodeDeoptActionAndReason(DeoptimizationAction action, DeoptimizationReason reason, int debugId) {
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151 HotSpotVMConfig config = runtime.getConfig();
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152 int actionValue = convertDeoptAction(action);
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153 int reasonValue = convertDeoptReason(reason);
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154 int debugValue = debugId & intMaskRight(config.deoptimizationDebugIdBits);
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155 JavaConstant c = JavaConstant.forInt(~((debugValue << config.deoptimizationDebugIdShift) | (reasonValue << config.deoptimizationReasonShift) | (actionValue << config.deoptimizationActionShift)));
12717
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156 assert c.asInt() < 0;
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157 return c;
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158 }
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159
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160 public DeoptimizationReason decodeDeoptReason(JavaConstant constant) {
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161 HotSpotVMConfig config = runtime.getConfig();
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162 int reasonValue = ((~constant.asInt()) >> config.deoptimizationReasonShift) & intMaskRight(config.deoptimizationReasonBits);
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163 DeoptimizationReason reason = convertDeoptReason(reasonValue);
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164 return reason;
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165 }
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diff changeset
166
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167 public DeoptimizationAction decodeDeoptAction(JavaConstant constant) {
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168 HotSpotVMConfig config = runtime.getConfig();
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169 int actionValue = ((~constant.asInt()) >> config.deoptimizationActionShift) & intMaskRight(config.deoptimizationActionBits);
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170 DeoptimizationAction action = convertDeoptAction(actionValue);
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171 return action;
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172 }
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173
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diff changeset
174 public int decodeDebugId(JavaConstant constant) {
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175 HotSpotVMConfig config = runtime.getConfig();
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diff changeset
176 return ((~constant.asInt()) >> config.deoptimizationDebugIdShift) & intMaskRight(config.deoptimizationDebugIdBits);
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177 }
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178
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179 public int convertDeoptAction(DeoptimizationAction action) {
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180 HotSpotVMConfig config = runtime.getConfig();
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181 switch (action) {
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182 case None:
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183 return config.deoptActionNone;
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184 case RecompileIfTooManyDeopts:
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185 return config.deoptActionMaybeRecompile;
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186 case InvalidateReprofile:
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187 return config.deoptActionReinterpret;
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188 case InvalidateRecompile:
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189 return config.deoptActionMakeNotEntrant;
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190 case InvalidateStopCompiling:
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191 return config.deoptActionMakeNotCompilable;
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192 default:
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193 throw new JVMCIError("%s", action);
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194 }
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195 }
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196
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197 public DeoptimizationAction convertDeoptAction(int action) {
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198 HotSpotVMConfig config = runtime.getConfig();
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199 if (action == config.deoptActionNone) {
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200 return DeoptimizationAction.None;
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201 }
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202 if (action == config.deoptActionMaybeRecompile) {
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diff changeset
203 return DeoptimizationAction.RecompileIfTooManyDeopts;
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204 }
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205 if (action == config.deoptActionReinterpret) {
12484
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diff changeset
206 return DeoptimizationAction.InvalidateReprofile;
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207 }
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208 if (action == config.deoptActionMakeNotEntrant) {
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diff changeset
209 return DeoptimizationAction.InvalidateRecompile;
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210 }
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diff changeset
211 if (action == config.deoptActionMakeNotCompilable) {
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diff changeset
212 return DeoptimizationAction.InvalidateStopCompiling;
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diff changeset
213 }
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parents: 18867
diff changeset
214 throw new JVMCIError("%d", action);
12484
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diff changeset
215 }
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diff changeset
216
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parents:
diff changeset
217 public int convertDeoptReason(DeoptimizationReason reason) {
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diff changeset
218 HotSpotVMConfig config = runtime.getConfig();
12429
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parents:
diff changeset
219 switch (reason) {
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parents:
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220 case None:
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diff changeset
221 return config.deoptReasonNone;
12429
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parents:
diff changeset
222 case NullCheckException:
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diff changeset
223 return config.deoptReasonNullCheck;
12429
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parents:
diff changeset
224 case BoundsCheckException:
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225 return config.deoptReasonRangeCheck;
12429
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parents:
diff changeset
226 case ClassCastException:
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diff changeset
227 return config.deoptReasonClassCheck;
12429
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parents:
diff changeset
228 case ArrayStoreException:
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diff changeset
229 return config.deoptReasonArrayCheck;
12429
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parents:
diff changeset
230 case UnreachedCode:
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diff changeset
231 return config.deoptReasonUnreached0;
12429
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parents:
diff changeset
232 case TypeCheckedInliningViolated:
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diff changeset
233 return config.deoptReasonTypeCheckInlining;
12429
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parents:
diff changeset
234 case OptimizedTypeCheckViolated:
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diff changeset
235 return config.deoptReasonOptimizedTypeCheck;
12429
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parents:
diff changeset
236 case NotCompiledExceptionHandler:
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diff changeset
237 return config.deoptReasonNotCompiledExceptionHandler;
12429
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parents:
diff changeset
238 case Unresolved:
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diff changeset
239 return config.deoptReasonUnresolved;
12429
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parents:
diff changeset
240 case JavaSubroutineMismatch:
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diff changeset
241 return config.deoptReasonJsrMismatch;
12429
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parents:
diff changeset
242 case ArithmeticException:
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diff changeset
243 return config.deoptReasonDiv0Check;
12429
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parents:
diff changeset
244 case RuntimeConstraint:
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diff changeset
245 return config.deoptReasonConstraint;
12429
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parents:
diff changeset
246 case LoopLimitCheck:
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diff changeset
247 return config.deoptReasonLoopLimitCheck;
13155
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Roland Schatz <roland.schatz@oracle.com>
parents: 12757
diff changeset
248 case Aliasing:
13257
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diff changeset
249 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
250 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
251 return config.deoptReasonTransferToInterpreter;
12429
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parents:
diff changeset
252 default:
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parents: 18867
diff changeset
253 throw new JVMCIError("%s", reason);
12429
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parents:
diff changeset
254 }
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parents:
diff changeset
255 }
12484
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diff changeset
256
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diff changeset
257 public DeoptimizationReason convertDeoptReason(int reason) {
13257
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258 HotSpotVMConfig config = runtime.getConfig();
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259 if (reason == config.deoptReasonNone) {
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260 return DeoptimizationReason.None;
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261 }
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262 if (reason == config.deoptReasonNullCheck) {
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263 return DeoptimizationReason.NullCheckException;
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264 }
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265 if (reason == config.deoptReasonRangeCheck) {
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266 return DeoptimizationReason.BoundsCheckException;
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267 }
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268 if (reason == config.deoptReasonClassCheck) {
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269 return DeoptimizationReason.ClassCastException;
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270 }
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271 if (reason == config.deoptReasonArrayCheck) {
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272 return DeoptimizationReason.ArrayStoreException;
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273 }
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274 if (reason == config.deoptReasonUnreached0) {
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275 return DeoptimizationReason.UnreachedCode;
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276 }
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277 if (reason == config.deoptReasonTypeCheckInlining) {
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278 return DeoptimizationReason.TypeCheckedInliningViolated;
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279 }
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280 if (reason == config.deoptReasonOptimizedTypeCheck) {
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281 return DeoptimizationReason.OptimizedTypeCheckViolated;
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282 }
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283 if (reason == config.deoptReasonNotCompiledExceptionHandler) {
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284 return DeoptimizationReason.NotCompiledExceptionHandler;
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285 }
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286 if (reason == config.deoptReasonUnresolved) {
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287 return DeoptimizationReason.Unresolved;
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288 }
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289 if (reason == config.deoptReasonJsrMismatch) {
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290 return DeoptimizationReason.JavaSubroutineMismatch;
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291 }
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292 if (reason == config.deoptReasonDiv0Check) {
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293 return DeoptimizationReason.ArithmeticException;
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294 }
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295 if (reason == config.deoptReasonConstraint) {
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296 return DeoptimizationReason.RuntimeConstraint;
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297 }
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298 if (reason == config.deoptReasonLoopLimitCheck) {
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299 return DeoptimizationReason.LoopLimitCheck;
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300 }
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301 if (reason == config.deoptReasonAliasing) {
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302 return DeoptimizationReason.Aliasing;
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303 }
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304 if (reason == config.deoptReasonTransferToInterpreter) {
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305 return DeoptimizationReason.TransferToInterpreter;
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306 }
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307 throw new JVMCIError("%x", reason);
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308 }
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309
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310 @Override
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311 public long getMemorySize(JavaConstant constant) {
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312 if (constant.getJavaKind() == JavaKind.Object) {
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313 HotSpotResolvedObjectType lookupJavaType = lookupJavaType(constant);
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314
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315 if (lookupJavaType == null) {
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316 return 0;
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317 } else {
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318 if (lookupJavaType.isArray()) {
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319 // TODO(tw): Add compressed pointer support.
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320 int length = Array.getLength(((HotSpotObjectConstantImpl) constant).object());
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321 ResolvedJavaType elementType = lookupJavaType.getComponentType();
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322 JavaKind elementKind = elementType.getJavaKind();
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323 final int headerSize = getArrayBaseOffset(elementKind);
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324 TargetDescription target = runtime.getHostJVMCIBackend().getTarget();
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325 int sizeOfElement = getArrayIndexScale(elementKind);
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326 int alignment = target.wordSize;
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327 int log2ElementSize = CodeUtil.log2(sizeOfElement);
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328 return computeArrayAllocationSize(length, alignment, headerSize, log2ElementSize);
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329 }
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330 return lookupJavaType.instanceSize();
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331 }
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332 } else {
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diff changeset
333 return constant.getJavaKind().getByteCount();
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334 }
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335 }
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336
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337 /**
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338 * Computes the size of the memory chunk allocated for an array. This size accounts for the
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339 * array header size, body size and any padding after the last element to satisfy object
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340 * alignment requirements.
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341 *
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342 * @param length the number of elements in the array
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343 * @param alignment the object alignment requirement
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344 * @param headerSize the size of the array header
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345 * @param log2ElementSize log2 of the size of an element in the array
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346 */
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347 public static int computeArrayAllocationSize(int length, int alignment, int headerSize, int log2ElementSize) {
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348 int size = (length << log2ElementSize) + headerSize + (alignment - 1);
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349 int mask = ~(alignment - 1);
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350 return size & mask;
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351 }
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parents:
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352 }