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annotate jvmci/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotResolvedObjectType.java @ 24234:ea6f94ab283b default tip

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Added tag jvmci-0.36 for changeset 8128b98d4736
author Gilles Duboscq <gilles.m.duboscq@oracle.com>
date Mon, 18 Sep 2017 18:49:45 +0200
parents b01354ea98ec
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 jdk.vm.ci.hotspot;
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24
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25 import jdk.vm.ci.meta.Assumptions.AssumptionResult;
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26 import jdk.vm.ci.meta.Constant;
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27 import jdk.vm.ci.meta.ConstantPool;
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28 import jdk.vm.ci.meta.JavaConstant;
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29 import jdk.vm.ci.meta.JavaKind;
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30 import jdk.vm.ci.meta.JavaType;
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31 import jdk.vm.ci.meta.ResolvedJavaMethod;
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32 import jdk.vm.ci.meta.ResolvedJavaType;
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34 /**
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35 * Implementation of {@link JavaType} for resolved non-primitive HotSpot classes.
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36 */
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37 public interface HotSpotResolvedObjectType extends ResolvedJavaType {
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38
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39 /**
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40 * Gets the JVMCI mirror for a {@link Class} object.
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41 *
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42 * @return the {@link HotSpotResolvedJavaType} corresponding to {@code javaClass}
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43 */
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44 static HotSpotResolvedObjectType fromObjectClass(Class<?> javaClass) {
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45 return HotSpotResolvedObjectTypeImpl.fromObjectClass(javaClass);
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46 }
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47
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48 HotSpotResolvedObjectType getArrayClass();
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49
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50 ResolvedJavaType getComponentType();
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51
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52 AssumptionResult<ResolvedJavaType> findLeafConcreteSubtype();
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53
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54 HotSpotResolvedObjectType getSuperclass();
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55
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56 HotSpotResolvedObjectType[] getInterfaces();
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57
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58 HotSpotResolvedObjectType getSupertype();
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59
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60 HotSpotResolvedObjectType findLeastCommonAncestor(ResolvedJavaType otherType);
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61
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62 default boolean isPrimitive() {
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63 return false;
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64 }
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65
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66 default JavaKind getJavaKind() {
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67 return JavaKind.Object;
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68 }
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69
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70 ConstantPool getConstantPool();
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71
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72 /**
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73 * Gets the instance size of this type. If an instance of this type cannot be fast path
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74 * allocated, then the returned value is negative (its absolute value gives the size). Must not
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75 * be called if this is an array or interface type.
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76 */
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77 int instanceSize();
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78
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79 int getVtableLength();
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80
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81 @Override
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82 AssumptionResult<ResolvedJavaMethod> findUniqueConcreteMethod(ResolvedJavaMethod method);
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83
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84 /**
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85 * Performs a fast-path check that this type is resolved in the context of a given accessing
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86 * class. A negative result does not mean this type is not resolved with respect to
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87 * {@code accessingClass}. That can only be determined by
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88 * {@linkplain HotSpotJVMCIRuntime#lookupType(String, HotSpotResolvedObjectType, boolean)
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89 * re-resolving} the type.
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90 */
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91 boolean isDefinitelyResolvedWithRespectTo(ResolvedJavaType accessingClass);
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92
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93 /**
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94 * Gets the metaspace Klass boxed in a {@link JavaConstant}.
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95 */
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96 Constant klass();
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97
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98 boolean isPrimaryType();
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99
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100 int superCheckOffset();
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101
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102 long prototypeMarkWord();
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103
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104 int layoutHelper();
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105
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106 HotSpotResolvedObjectType getEnclosingType();
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107
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108 ResolvedJavaMethod getClassInitializer();
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109
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110 /**
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111 * Gets the fingerprint for this type.
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112 *
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113 * @return the value of the fingerprint ({@code 0} for arrays and synthetic classes or if the VM
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114 * does not support fingerprints)
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115 */
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116 long getFingerprint();
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117 }