Mercurial > hg > graal-jvmci-8
annotate jvmci/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotJVMCIRuntimeProvider.java @ 23392:b3a816d3b844
Backed out changeset: a920338dd4d4
author | Doug Simon <doug.simon@oracle.com> |
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date | Thu, 12 May 2016 11:06:49 +0200 |
parents | a920338dd4d4 |
children | 1d4ce2d19e52 |
rev | line source |
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1 /* |
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2 * Copyright (c) 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.io.OutputStream; |
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26 |
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27 import jdk.vm.ci.common.JVMCIError; |
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28 import jdk.vm.ci.meta.JVMCIMetaAccessContext; |
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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.ResolvedJavaType; |
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32 import jdk.vm.ci.runtime.JVMCIRuntime; |
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33 import sun.misc.Unsafe; |
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34 |
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35 //JaCoCo Exclude |
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36 |
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37 /** |
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38 * Configuration information for the HotSpot JVMCI runtime. |
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39 */ |
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40 public interface HotSpotJVMCIRuntimeProvider extends JVMCIRuntime { |
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41 |
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42 HotSpotVMConfig getConfig(); |
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43 |
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44 CompilerToVM getCompilerToVM(); |
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45 |
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46 /** |
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47 * Gets an output stream that writes to the HotSpot's {@code tty} stream. |
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48 */ |
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49 OutputStream getLogStream(); |
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50 |
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51 /** |
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52 * Converts a name to a Java type. This method attempts to resolve {@code name} to a |
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53 * {@link ResolvedJavaType}. |
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54 * |
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55 * @param name a well formed Java type in {@linkplain JavaType#getName() internal} format |
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56 * @param accessingType the context of resolution which must be non-null |
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57 * @param resolve specifies whether resolution failure results in an unresolved type being |
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58 * return or a {@link LinkageError} being thrown |
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59 * @return a Java type for {@code name} which is guaranteed to be of type |
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60 * {@link ResolvedJavaType} if {@code resolve == true} |
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61 * @throws LinkageError if {@code resolve == true} and the resolution failed |
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62 * @throws NullPointerException if {@code accessingClass} is {@code null} |
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63 */ |
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64 JavaType lookupType(String name, HotSpotResolvedObjectType accessingType, boolean resolve); |
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65 |
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66 /** |
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67 * Gets the JVMCI mirror for a {@link Class} object. |
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68 * |
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69 * @return the {@link ResolvedJavaType} corresponding to {@code javaClass} |
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70 */ |
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71 ResolvedJavaType fromClass(Class<?> clazz); |
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72 |
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73 JVMCIMetaAccessContext getMetaAccessContext(); |
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74 |
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75 /** |
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76 * The offset from the origin of an array to the first element. |
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77 * |
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78 * @return the offset in bytes |
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79 */ |
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80 static int getArrayBaseOffset(JavaKind kind) { |
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81 switch (kind) { |
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82 case Boolean: |
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83 return Unsafe.ARRAY_BOOLEAN_BASE_OFFSET; |
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84 case Byte: |
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85 return Unsafe.ARRAY_BYTE_BASE_OFFSET; |
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86 case Char: |
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87 return Unsafe.ARRAY_CHAR_BASE_OFFSET; |
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88 case Short: |
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89 return Unsafe.ARRAY_SHORT_BASE_OFFSET; |
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90 case Int: |
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91 return Unsafe.ARRAY_INT_BASE_OFFSET; |
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92 case Long: |
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93 return Unsafe.ARRAY_LONG_BASE_OFFSET; |
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94 case Float: |
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95 return Unsafe.ARRAY_FLOAT_BASE_OFFSET; |
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96 case Double: |
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97 return Unsafe.ARRAY_DOUBLE_BASE_OFFSET; |
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98 case Object: |
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99 return Unsafe.ARRAY_OBJECT_BASE_OFFSET; |
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100 default: |
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101 throw new JVMCIError("%s", kind); |
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102 } |
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103 } |
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104 |
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105 /** |
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106 * The scale used for the index when accessing elements of an array of this kind. |
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107 * |
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108 * @return the scale in order to convert the index into a byte offset |
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109 */ |
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110 static int getArrayIndexScale(JavaKind kind) { |
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111 switch (kind) { |
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112 case Boolean: |
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113 return Unsafe.ARRAY_BOOLEAN_INDEX_SCALE; |
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114 case Byte: |
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115 return Unsafe.ARRAY_BYTE_INDEX_SCALE; |
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116 case Char: |
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117 return Unsafe.ARRAY_CHAR_INDEX_SCALE; |
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118 case Short: |
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119 return Unsafe.ARRAY_SHORT_INDEX_SCALE; |
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120 case Int: |
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121 return Unsafe.ARRAY_INT_INDEX_SCALE; |
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122 case Long: |
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123 return Unsafe.ARRAY_LONG_INDEX_SCALE; |
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124 case Float: |
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125 return Unsafe.ARRAY_FLOAT_INDEX_SCALE; |
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126 case Double: |
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127 return Unsafe.ARRAY_DOUBLE_INDEX_SCALE; |
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128 case Object: |
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129 return Unsafe.ARRAY_OBJECT_INDEX_SCALE; |
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130 default: |
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131 throw new JVMCIError("%s", kind); |
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132 } |
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133 } |
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134 } |