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annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/jvmci/HotSpotResolvedJavaFieldImpl.java @ 21542:543957c1c6a6

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removed more dependencies from JVMCI classes to non-JVMCI classes (JBS:GRAAL-53)
author Doug Simon <doug.simon@oracle.com>
date Mon, 25 May 2015 22:30:44 +0200
parents c1e2fdb5fea3
children
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1 /*
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2 * Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.graal.hotspot.jvmci;
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24
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25 import static com.oracle.graal.hotspot.jvmci.HotSpotJVMCIRuntime.*;
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26 import static com.oracle.graal.hotspot.jvmci.HotSpotResolvedJavaFieldImpl.Options.*;
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27 import static com.oracle.graal.hotspot.jvmci.HotSpotResolvedObjectTypeImpl.*;
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29 import java.lang.annotation.*;
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30 import java.lang.reflect.*;
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31
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32 import com.oracle.graal.api.meta.*;
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33 import com.oracle.graal.options.*;
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34
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35 /**
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36 * Represents a field in a HotSpot type.
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37 */
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38 public class HotSpotResolvedJavaFieldImpl implements HotSpotResolvedJavaField, HotSpotProxified {
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39
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40 static class Options {
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41 //@formatter:off
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42 @Option(help = "Mark well-known stable fields as such.", type = OptionType.Debug)
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43 public static final OptionValue<Boolean> ImplicitStableValues = new OptionValue<>(true);
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44 //@formatter:on
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45 }
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46
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47 private final HotSpotResolvedObjectTypeImpl holder;
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48 private final String name;
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49 private JavaType type;
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50 private final int offset;
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51
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52 /**
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53 * This value contains all flags as stored in the VM including internal ones.
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54 */
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55 private final int modifiers;
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56 private final LocationIdentity locationIdentity = new FieldLocationIdentity(this);
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57
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58 public static class FieldLocationIdentity extends LocationIdentity {
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59 HotSpotResolvedJavaField inner;
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61 public FieldLocationIdentity(HotSpotResolvedJavaFieldImpl inner) {
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62 this.inner = inner;
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63 }
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64
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65 @Override
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66 public boolean isImmutable() {
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67 return false;
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68 }
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69
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70 @Override
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71 public boolean equals(Object obj) {
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72 if (this == obj) {
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73 return true;
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74 }
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75 if (obj instanceof FieldLocationIdentity) {
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76 FieldLocationIdentity fieldLocationIdentity = (FieldLocationIdentity) obj;
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77 return inner.equals(fieldLocationIdentity.inner);
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78
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79 }
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80 return false;
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81 }
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82
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83 @Override
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84 public int hashCode() {
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85 return inner.hashCode();
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86 }
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87
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88 @Override
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89 public String toString() {
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90 return inner.getName();
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91 }
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92 }
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93
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94 public HotSpotResolvedJavaFieldImpl(HotSpotResolvedObjectTypeImpl holder, String name, JavaType type, long offset, int modifiers) {
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95 this.holder = holder;
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96 this.name = name;
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97 this.type = type;
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98 assert offset != -1;
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99 assert offset == (int) offset : "offset larger than int";
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100 this.offset = (int) offset;
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101 this.modifiers = modifiers;
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102 }
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103
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104 @Override
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105 public boolean equals(Object obj) {
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106 if (this == obj) {
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107 return true;
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108 }
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109 if (obj instanceof HotSpotResolvedJavaField) {
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110 HotSpotResolvedJavaFieldImpl that = (HotSpotResolvedJavaFieldImpl) obj;
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111 if (that.offset != this.offset || that.isStatic() != this.isStatic()) {
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112 return false;
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113 } else if (this.holder.equals(that.holder)) {
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114 assert this.name.equals(that.name) && this.type.equals(that.type);
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115 return true;
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116 }
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117 }
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118 return false;
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119 }
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120
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121 @Override
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122 public int hashCode() {
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123 return name.hashCode();
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124 }
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125
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Doug Simon <doug.simon@oracle.com>
parents: 14138
diff changeset
126 @Override
6539
2463eb24b644 Cleanup of Graal API: Rename methods so that it follows the getXxx naming convention and so that they are similar to the names of the java.lang.reflect classes. Remove unused methods.
Christian Wimmer <christian.wimmer@oracle.com>
parents: 6525
diff changeset
127 public int getModifiers() {
14012
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parents: 13823
diff changeset
128 return modifiers & getReflectionFieldModifiers();
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parents:
diff changeset
129 }
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diff changeset
130
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parents:
diff changeset
131 @Override
6950
41938af2b3d8 modifications to support non-perm-gen changes in HotSpot
Doug Simon <doug.simon@oracle.com>
parents: 6539
diff changeset
132 public boolean isInternal() {
14012
1f34717ccafa remove CompilerToVM.getInstanceFields
twisti
parents: 13823
diff changeset
133 return (modifiers & runtime().getConfig().jvmAccFieldInternal) != 0;
6950
41938af2b3d8 modifications to support non-perm-gen changes in HotSpot
Doug Simon <doug.simon@oracle.com>
parents: 6539
diff changeset
134 }
41938af2b3d8 modifications to support non-perm-gen changes in HotSpot
Doug Simon <doug.simon@oracle.com>
parents: 6539
diff changeset
135
10065
5ba3763d6986 HotSpotResolvedJavaField: check if method is called from snippet/replacements (GRAAL-290)
Bernhard Urban <bernhard.urban@jku.at>
parents: 10063
diff changeset
136 /**
12628
c36bdee8ca29 added type check for object before reading a field value from it during compilation
Doug Simon <doug.simon@oracle.com>
parents: 12559
diff changeset
137 * Determines if a given object contains this field.
15023
652564fe42d5 Use CompressionNode for accessing compressed Klass pointers.
Roland Schatz <roland.schatz@oracle.com>
parents: 15018
diff changeset
138 *
13823
6dd8b95a7fbb fixed HotSpotResolvedJavaField.getModifiers() to mask out FIELD_INTERNAL_FLAG
Doug Simon <doug.simon@oracle.com>
parents: 13818
diff changeset
139 * @return true iff this is a non-static field and its declaring class is assignable from
6dd8b95a7fbb fixed HotSpotResolvedJavaField.getModifiers() to mask out FIELD_INTERNAL_FLAG
Doug Simon <doug.simon@oracle.com>
parents: 13818
diff changeset
140 * {@code object}'s class
12628
c36bdee8ca29 added type check for object before reading a field value from it during compilation
Doug Simon <doug.simon@oracle.com>
parents: 12559
diff changeset
141 */
c36bdee8ca29 added type check for object before reading a field value from it during compilation
Doug Simon <doug.simon@oracle.com>
parents: 12559
diff changeset
142 public boolean isInObject(Object object) {
15311
820c6d353358 added ModifiersProvider as superinterface for ResolvedJava[Method|Field|Type] and implemented all checks against modifiers as default methods
Doug Simon <doug.simon@oracle.com>
parents: 15259
diff changeset
143 if (isStatic()) {
13823
6dd8b95a7fbb fixed HotSpotResolvedJavaField.getModifiers() to mask out FIELD_INTERNAL_FLAG
Doug Simon <doug.simon@oracle.com>
parents: 13818
diff changeset
144 return false;
6dd8b95a7fbb fixed HotSpotResolvedJavaField.getModifiers() to mask out FIELD_INTERNAL_FLAG
Doug Simon <doug.simon@oracle.com>
parents: 13818
diff changeset
145 }
18223
17c98fad6980 converted HotSpotResolvedObjectType to an interface
Doug Simon <doug.simon@oracle.com>
parents: 18187
diff changeset
146 return getDeclaringClass().isAssignableFrom(HotSpotResolvedObjectTypeImpl.fromObjectClass(object.getClass()));
12628
c36bdee8ca29 added type check for object before reading a field value from it during compilation
Doug Simon <doug.simon@oracle.com>
parents: 12559
diff changeset
147 }
c36bdee8ca29 added type check for object before reading a field value from it during compilation
Doug Simon <doug.simon@oracle.com>
parents: 12559
diff changeset
148
5629
26a060cc58ca Initial implementation of closed world analysis by iteratively expanding the universe starting at method entry points.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 5554
diff changeset
149 @Override
18223
17c98fad6980 converted HotSpotResolvedObjectType to an interface
Doug Simon <doug.simon@oracle.com>
parents: 18187
diff changeset
150 public HotSpotResolvedObjectTypeImpl getDeclaringClass() {
3733
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parents:
diff changeset
151 return holder;
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parents:
diff changeset
152 }
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parents:
diff changeset
153
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parents:
diff changeset
154 @Override
6539
2463eb24b644 Cleanup of Graal API: Rename methods so that it follows the getXxx naming convention and so that they are similar to the names of the java.lang.reflect classes. Remove unused methods.
Christian Wimmer <christian.wimmer@oracle.com>
parents: 6525
diff changeset
155 public String getName() {
3733
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parents:
diff changeset
156 return name;
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parents:
diff changeset
157 }
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parents:
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158
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
159 @Override
6539
2463eb24b644 Cleanup of Graal API: Rename methods so that it follows the getXxx naming convention and so that they are similar to the names of the java.lang.reflect classes. Remove unused methods.
Christian Wimmer <christian.wimmer@oracle.com>
parents: 6525
diff changeset
160 public JavaType getType() {
20878
673e0b242d4d fixed race in HotSpotResolvedJavaFieldImpl.getType()
Doug Simon <doug.simon@oracle.com>
parents: 20821
diff changeset
161 // Pull field into local variable to prevent a race causing
673e0b242d4d fixed race in HotSpotResolvedJavaFieldImpl.getType()
Doug Simon <doug.simon@oracle.com>
parents: 20821
diff changeset
162 // a ClassCastException below
673e0b242d4d fixed race in HotSpotResolvedJavaFieldImpl.getType()
Doug Simon <doug.simon@oracle.com>
parents: 20821
diff changeset
163 JavaType currentType = type;
673e0b242d4d fixed race in HotSpotResolvedJavaFieldImpl.getType()
Doug Simon <doug.simon@oracle.com>
parents: 20821
diff changeset
164 if (currentType instanceof HotSpotUnresolvedJavaType) {
14047
fde464340755 don't allow unresolved field types to hang around
Tom Rodriguez <tom.rodriguez@oracle.com>
parents: 14012
diff changeset
165 // Don't allow unresolved types to hang around forever
20878
673e0b242d4d fixed race in HotSpotResolvedJavaFieldImpl.getType()
Doug Simon <doug.simon@oracle.com>
parents: 20821
diff changeset
166 HotSpotUnresolvedJavaType unresolvedType = (HotSpotUnresolvedJavaType) currentType;
673e0b242d4d fixed race in HotSpotResolvedJavaFieldImpl.getType()
Doug Simon <doug.simon@oracle.com>
parents: 20821
diff changeset
167 ResolvedJavaType resolved = unresolvedType.reresolve(holder);
14047
fde464340755 don't allow unresolved field types to hang around
Tom Rodriguez <tom.rodriguez@oracle.com>
parents: 14012
diff changeset
168 if (resolved != null) {
fde464340755 don't allow unresolved field types to hang around
Tom Rodriguez <tom.rodriguez@oracle.com>
parents: 14012
diff changeset
169 type = resolved;
fde464340755 don't allow unresolved field types to hang around
Tom Rodriguez <tom.rodriguez@oracle.com>
parents: 14012
diff changeset
170 }
fde464340755 don't allow unresolved field types to hang around
Tom Rodriguez <tom.rodriguez@oracle.com>
parents: 14012
diff changeset
171 }
3733
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parents:
diff changeset
172 return type;
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parents:
diff changeset
173 }
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parents:
diff changeset
174
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
175 public int offset() {
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parents:
diff changeset
176 return offset;
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
177 }
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
178
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parents:
diff changeset
179 @Override
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parents:
diff changeset
180 public String toString() {
16481
e7fc65330742 moved format(String format, JavaField field) from MetaUtil to be a default method in JavaField
Doug Simon <doug.simon@oracle.com>
parents: 16383
diff changeset
181 return format("HotSpotField<%H.%n %t:") + offset + ">";
3733
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parents:
diff changeset
182 }
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parents:
diff changeset
183
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parents:
diff changeset
184 @Override
9984
f3330a4487eb added ResolvedJava[Field|Method].isSynthetic()
Doug Simon <doug.simon@oracle.com>
parents: 9914
diff changeset
185 public boolean isSynthetic() {
14012
1f34717ccafa remove CompilerToVM.getInstanceFields
twisti
parents: 13823
diff changeset
186 return (runtime().getConfig().syntheticFlag & modifiers) != 0;
9984
f3330a4487eb added ResolvedJava[Field|Method].isSynthetic()
Doug Simon <doug.simon@oracle.com>
parents: 9914
diff changeset
187 }
f3330a4487eb added ResolvedJava[Field|Method].isSynthetic()
Doug Simon <doug.simon@oracle.com>
parents: 9914
diff changeset
188
12559
ae412befde21 read HotSpotVMConfig fields from HotSpot's vmStructs via annotations
twisti
parents: 12456
diff changeset
189 /**
ae412befde21 read HotSpotVMConfig fields from HotSpot's vmStructs via annotations
twisti
parents: 12456
diff changeset
190 * Checks if this field has the {@link Stable} annotation.
15023
652564fe42d5 Use CompressionNode for accessing compressed Klass pointers.
Roland Schatz <roland.schatz@oracle.com>
parents: 15018
diff changeset
191 *
12559
ae412befde21 read HotSpotVMConfig fields from HotSpot's vmStructs via annotations
twisti
parents: 12456
diff changeset
192 * @return true if field has {@link Stable} annotation, false otherwise
ae412befde21 read HotSpotVMConfig fields from HotSpot's vmStructs via annotations
twisti
parents: 12456
diff changeset
193 */
ae412befde21 read HotSpotVMConfig fields from HotSpot's vmStructs via annotations
twisti
parents: 12456
diff changeset
194 public boolean isStable() {
17334
0563b652c052 Unify parsing of graal and hotspot Stable annotations
Tom Rodriguez <tom.rodriguez@oracle.com>
parents: 16481
diff changeset
195 if ((runtime().getConfig().jvmAccFieldStable & modifiers) != 0) {
0563b652c052 Unify parsing of graal and hotspot Stable annotations
Tom Rodriguez <tom.rodriguez@oracle.com>
parents: 16481
diff changeset
196 return true;
0563b652c052 Unify parsing of graal and hotspot Stable annotations
Tom Rodriguez <tom.rodriguez@oracle.com>
parents: 16481
diff changeset
197 }
0563b652c052 Unify parsing of graal and hotspot Stable annotations
Tom Rodriguez <tom.rodriguez@oracle.com>
parents: 16481
diff changeset
198 assert getAnnotation(Stable.class) == null;
18507
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
199 if (ImplicitStableValues.getValue() && isImplicitStableField()) {
c2b45b536677 Constant fold elements of switch table and enum values() arrays
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parents: 18465
diff changeset
200 return true;
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
201 }
17334
0563b652c052 Unify parsing of graal and hotspot Stable annotations
Tom Rodriguez <tom.rodriguez@oracle.com>
parents: 16481
diff changeset
202 return false;
12559
ae412befde21 read HotSpotVMConfig fields from HotSpot's vmStructs via annotations
twisti
parents: 12456
diff changeset
203 }
ae412befde21 read HotSpotVMConfig fields from HotSpot's vmStructs via annotations
twisti
parents: 12456
diff changeset
204
9984
f3330a4487eb added ResolvedJava[Field|Method].isSynthetic()
Doug Simon <doug.simon@oracle.com>
parents: 9914
diff changeset
205 @Override
3733
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parents:
diff changeset
206 public <T extends Annotation> T getAnnotation(Class<T> annotationClass) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
207 Field javaField = toJava();
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
208 if (javaField != null) {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
209 return javaField.getAnnotation(annotationClass);
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
210 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
211 return null;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
212 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
213
20821
1bfa14fd1275 Cache the reflection Field in HotSpotResolvedFieldImpl, since it is accessed repeatedly when accessing the annotations of the field
Christian Wimmer <christian.wimmer@oracle.com>
parents: 20103
diff changeset
214 private Field toJavaCache;
1bfa14fd1275 Cache the reflection Field in HotSpotResolvedFieldImpl, since it is accessed repeatedly when accessing the annotations of the field
Christian Wimmer <christian.wimmer@oracle.com>
parents: 20103
diff changeset
215
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
216 private Field toJava() {
20821
1bfa14fd1275 Cache the reflection Field in HotSpotResolvedFieldImpl, since it is accessed repeatedly when accessing the annotations of the field
Christian Wimmer <christian.wimmer@oracle.com>
parents: 20103
diff changeset
217 if (toJavaCache != null) {
1bfa14fd1275 Cache the reflection Field in HotSpotResolvedFieldImpl, since it is accessed repeatedly when accessing the annotations of the field
Christian Wimmer <christian.wimmer@oracle.com>
parents: 20103
diff changeset
218 return toJavaCache;
1bfa14fd1275 Cache the reflection Field in HotSpotResolvedFieldImpl, since it is accessed repeatedly when accessing the annotations of the field
Christian Wimmer <christian.wimmer@oracle.com>
parents: 20103
diff changeset
219 }
1bfa14fd1275 Cache the reflection Field in HotSpotResolvedFieldImpl, since it is accessed repeatedly when accessing the annotations of the field
Christian Wimmer <christian.wimmer@oracle.com>
parents: 20103
diff changeset
220
13823
6dd8b95a7fbb fixed HotSpotResolvedJavaField.getModifiers() to mask out FIELD_INTERNAL_FLAG
Doug Simon <doug.simon@oracle.com>
parents: 13818
diff changeset
221 if (isInternal()) {
6dd8b95a7fbb fixed HotSpotResolvedJavaField.getModifiers() to mask out FIELD_INTERNAL_FLAG
Doug Simon <doug.simon@oracle.com>
parents: 13818
diff changeset
222 return null;
6dd8b95a7fbb fixed HotSpotResolvedJavaField.getModifiers() to mask out FIELD_INTERNAL_FLAG
Doug Simon <doug.simon@oracle.com>
parents: 13818
diff changeset
223 }
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
224 try {
20821
1bfa14fd1275 Cache the reflection Field in HotSpotResolvedFieldImpl, since it is accessed repeatedly when accessing the annotations of the field
Christian Wimmer <christian.wimmer@oracle.com>
parents: 20103
diff changeset
225 return toJavaCache = holder.mirror().getDeclaredField(name);
19917
6575b4e3f629 Don't force resolution for unloaded field types
Tom Rodriguez <tom.rodriguez@oracle.com>
parents: 19848
diff changeset
226 } catch (NoSuchFieldException | NoClassDefFoundError e) {
3733
e233f5660da4 Added Java files from Maxine project.
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parents:
diff changeset
227 return null;
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
228 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
229 }
18507
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
230
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
231 private boolean isArray() {
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
232 JavaType fieldType = getType();
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
233 return fieldType instanceof ResolvedJavaType && ((ResolvedJavaType) fieldType).isArray();
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
234 }
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
235
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
236 private boolean isImplicitStableField() {
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
237 if (isSynthetic()) {
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
238 if (isSyntheticImplicitStableField()) {
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
239 return true;
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
240 }
18508
f56a5c4cd859 Treat String.value as implicit stable field
Andreas Woess <andreas.woess@jku.at>
parents: 18507
diff changeset
241 } else if (isWellKnownImplicitStableField()) {
f56a5c4cd859 Treat String.value as implicit stable field
Andreas Woess <andreas.woess@jku.at>
parents: 18507
diff changeset
242 return true;
18507
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
243 }
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
244 return false;
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
245 }
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
246
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
247 private boolean isSyntheticImplicitStableField() {
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
248 assert this.isSynthetic();
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
249 if (isStatic() && isArray()) {
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
250 if (isFinal() && name.equals("$VALUES") || name.equals("ENUM$VALUES")) {
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
251 // generated int[] field for EnumClass::values()
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
252 return true;
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
253 } else if (name.startsWith("$SwitchMap$") || name.startsWith("$SWITCH_TABLE$")) {
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
254 // javac and ecj generate a static field in an inner class for a switch on an enum
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
255 // named $SwitchMap$p$k$g$EnumClass and $SWITCH_TABLE$p$k$g$EnumClass, respectively
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
256 return true;
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
257 }
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
258 }
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
259 return false;
c2b45b536677 Constant fold elements of switch table and enum values() arrays
Andreas Woess <andreas.woess@jku.at>
parents: 18465
diff changeset
260 }
18508
f56a5c4cd859 Treat String.value as implicit stable field
Andreas Woess <andreas.woess@jku.at>
parents: 18507
diff changeset
261
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262 private boolean isWellKnownImplicitStableField() {
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263 return WellKnownImplicitStableField.test(this);
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264 }
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265
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266 static class WellKnownImplicitStableField {
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267 /**
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268 * @return {@code true} if the field is a well-known stable field.
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269 */
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270 public static boolean test(HotSpotResolvedJavaField field) {
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271 return field.equals(STRING_VALUE_FIELD);
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272 }
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273
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274 private static final ResolvedJavaField STRING_VALUE_FIELD;
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275 static {
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276 try {
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277 MetaAccessProvider metaAccess = runtime().getHostJVMCIBackend().getMetaAccess();
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278 STRING_VALUE_FIELD = metaAccess.lookupJavaField(String.class.getDeclaredField("value"));
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279 } catch (SecurityException | NoSuchFieldException e) {
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280 throw new InternalError(e);
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281 }
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282 }
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283 }
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284
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285 public LocationIdentity getLocationIdentity() {
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286 return locationIdentity;
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287 }
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288 }