Mercurial > hg > graal-jvmci-8
annotate jvmci/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotObjectConstant.java @ 23738:1140503536ae jvmci-0.19
Backport style fixes and comments from jdk9.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Fri, 12 Aug 2016 11:07:39 +0200 |
parents | 1bbd4a7c274b |
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1 /* |
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2 * Copyright (c) 2009, 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 java.lang.invoke.CallSite; |
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26 import java.util.Objects; |
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27 |
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28 import jdk.vm.ci.meta.Assumptions; |
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29 import jdk.vm.ci.meta.JavaConstant; |
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30 import jdk.vm.ci.meta.ResolvedJavaType; |
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31 import jdk.vm.ci.meta.VMConstant; |
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32 |
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33 /** |
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34 * Represents a constant non-{@code null} object reference, within the compiler and across the |
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35 * compiler/runtime interface. |
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36 */ |
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37 public interface HotSpotObjectConstant extends JavaConstant, HotSpotConstant, VMConstant { |
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38 |
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39 JavaConstant compress(); |
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40 |
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41 JavaConstant uncompress(); |
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42 |
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43 /** |
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44 * Gets the resolved Java type of the object represented by this constant. |
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45 */ |
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46 HotSpotResolvedObjectType getType(); |
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47 |
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48 /** |
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49 * Gets the result of {@link Class#getClassLoader()} for the {@link Class} object represented by |
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50 * this constant. |
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51 * |
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52 * @return {@code null} if this constant does not represent a {@link Class} object |
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53 */ |
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54 JavaConstant getClassLoader(); |
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55 |
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56 /** |
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57 * Gets the {@linkplain System#identityHashCode(Object) identity} has code for the object |
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58 * represented by this constant. |
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59 */ |
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60 int getIdentityHashCode(); |
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61 |
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62 /** |
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63 * Gets the result of {@link Class#getComponentType()} for the {@link Class} object represented |
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64 * by this constant. |
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65 * |
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66 * @return {@code null} if this constant does not represent a {@link Class} object |
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67 */ |
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68 JavaConstant getComponentType(); |
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69 |
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70 /** |
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71 * Gets the result of {@link Class#getSuperclass()} for the {@link Class} object represented by |
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72 * this constant. |
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73 * |
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74 * @return {@code null} if this constant does not represent a {@link Class} object |
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75 */ |
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76 JavaConstant getSuperclass(); |
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77 |
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78 /** |
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79 * Gets the result of {@link CallSite#getTarget()} for the {@link CallSite} object represented |
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80 * by this constant. |
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81 * |
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82 * @param assumptions used to register an assumption that the {@link CallSite}'s target does not |
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83 * change |
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84 * @return {@code null} if this constant does not represent a {@link CallSite} object |
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85 */ |
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86 JavaConstant getCallSiteTarget(Assumptions assumptions); |
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87 |
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88 /** |
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89 * Determines if this constant represents an {@linkplain String#intern() interned} string. |
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90 */ |
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91 boolean isInternedString(); |
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92 |
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93 /** |
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94 * Gets the object represented by this constant represents if it is of a given type. |
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95 * |
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96 * @param type the expected type of the object represented by this constant. If the object is |
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97 * required to be of this type, then wrap the call to this method in |
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98 * {@link Objects#requireNonNull(Object)}. |
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99 * @return the object value represented by this constant if it is an |
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100 * {@link ResolvedJavaType#isInstance(JavaConstant) instance of} {@code type} otherwise |
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101 * {@code null} |
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102 */ |
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103 <T> T asObject(Class<T> type); |
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104 |
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105 /** |
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106 * Gets the object represented by this constant represents if it is of a given type. |
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107 * |
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108 * @param type the expected type of the object represented by this constant. If the object is |
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109 * required to be of this type, then wrap the call to this method in |
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110 * {@link Objects#requireNonNull(Object)}. |
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111 * @return the object value represented by this constant if it is an |
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112 * {@link ResolvedJavaType#isInstance(JavaConstant) instance of} {@code type} otherwise |
25a21e1794ec
modified SnippetReflectionProvider to support both VM-side and compiler-side constants in a compilation replay context
Doug Simon <doug.simon@oracle.com>
parents:
18530
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113 * {@code null} |
25a21e1794ec
modified SnippetReflectionProvider to support both VM-side and compiler-side constants in a compilation replay context
Doug Simon <doug.simon@oracle.com>
parents:
18530
diff
changeset
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114 */ |
25a21e1794ec
modified SnippetReflectionProvider to support both VM-side and compiler-side constants in a compilation replay context
Doug Simon <doug.simon@oracle.com>
parents:
18530
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115 Object asObject(ResolvedJavaType type); |
15018
db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
Christian Wimmer <christian.wimmer@oracle.com>
parents:
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116 } |