Mercurial > hg > graal-jvmci-8

annotate jvmci/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotJVMCIRuntimeProvider.java @ 24225:a2dbb6fcc923

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Added tag jvmci-0.33 for changeset 3aed4cb813f4
author Doug Simon <doug.simon@oracle.com>
date Fri, 18 Aug 2017 22:47:33 +0200
parents b5557b757040
children
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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.JavaKind;
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29 import jdk.vm.ci.meta.JavaType;
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30 import jdk.vm.ci.meta.ResolvedJavaType;
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31 import jdk.vm.ci.runtime.JVMCIRuntime;
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32 import sun.misc.Unsafe;
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33
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34 /**
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35 * Configuration information for the HotSpot JVMCI runtime.
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36 */
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37 public interface HotSpotJVMCIRuntimeProvider extends JVMCIRuntime {
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38
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39 HotSpotVMConfigStore getConfigStore();
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40
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41 HotSpotVMConfig getConfig();
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43 CompilerToVM getCompilerToVM();
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44
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45 /**
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46 * Gets an output stream that writes to the HotSpot's {@code tty} stream.
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47 */
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48 OutputStream getLogStream();
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49
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50 /**
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51 * Converts a name to a Java type. This method attempts to resolve {@code name} to a
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52 * {@link ResolvedJavaType}.
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53 *
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54 * @param name a well formed Java type in {@linkplain JavaType#getName() internal} format
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55 * @param accessingType the context of resolution which must be non-null
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56 * @param resolve specifies whether resolution failure results in an unresolved type being
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57 * return or a {@link LinkageError} being thrown
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58 * @return a Java type for {@code name} which is guaranteed to be of type
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59 * {@link ResolvedJavaType} if {@code resolve == true}
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60 * @throws LinkageError if {@code resolve == true} and the resolution failed
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61 * @throws NullPointerException if {@code accessingClass} is {@code null}
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62 */
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63 JavaType lookupType(String name, HotSpotResolvedObjectType accessingType, boolean resolve);
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64
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65 /**
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66 * Gets the JVMCI mirror for a {@link Class} object.
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67 *
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68 * @return the {@link ResolvedJavaType} corresponding to {@code javaClass}
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69 */
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70 ResolvedJavaType fromClass(Class<?> clazz);
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71
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72 /**
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73 * The offset from the origin of an array to the first element.
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74 *
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75 * @return the offset in bytes
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76 */
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77 static int getArrayBaseOffset(JavaKind kind) {
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78 switch (kind) {
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79 case Boolean:
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80 return Unsafe.ARRAY_BOOLEAN_BASE_OFFSET;
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81 case Byte:
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82 return Unsafe.ARRAY_BYTE_BASE_OFFSET;
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83 case Char:
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84 return Unsafe.ARRAY_CHAR_BASE_OFFSET;
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85 case Short:
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86 return Unsafe.ARRAY_SHORT_BASE_OFFSET;
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87 case Int:
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88 return Unsafe.ARRAY_INT_BASE_OFFSET;
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89 case Long:
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90 return Unsafe.ARRAY_LONG_BASE_OFFSET;
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91 case Float:
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92 return Unsafe.ARRAY_FLOAT_BASE_OFFSET;
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93 case Double:
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94 return Unsafe.ARRAY_DOUBLE_BASE_OFFSET;
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95 case Object:
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96 return Unsafe.ARRAY_OBJECT_BASE_OFFSET;
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97 default:
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98 throw new JVMCIError("%s", kind);
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99 }
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100 }
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101
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102 /**
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103 * The scale used for the index when accessing elements of an array of this kind.
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104 *
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105 * @return the scale in order to convert the index into a byte offset
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106 */
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107 static int getArrayIndexScale(JavaKind kind) {
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108 switch (kind) {
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109 case Boolean:
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110 return Unsafe.ARRAY_BOOLEAN_INDEX_SCALE;
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111 case Byte:
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112 return Unsafe.ARRAY_BYTE_INDEX_SCALE;
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113 case Char:
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114 return Unsafe.ARRAY_CHAR_INDEX_SCALE;
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115 case Short:
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116 return Unsafe.ARRAY_SHORT_INDEX_SCALE;
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117 case Int:
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118 return Unsafe.ARRAY_INT_INDEX_SCALE;
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119 case Long:
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120 return Unsafe.ARRAY_LONG_INDEX_SCALE;
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121 case Float:
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122 return Unsafe.ARRAY_FLOAT_INDEX_SCALE;
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123 case Double:
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124 return Unsafe.ARRAY_DOUBLE_INDEX_SCALE;
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125 case Object:
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126 return Unsafe.ARRAY_OBJECT_INDEX_SCALE;
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127 default:
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128 throw new JVMCIError("%s", kind);
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129 }
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130 }
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131 }