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annotate jvmci/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotVMConfigStore.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 ebce30b702eb
children
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1 /*
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2 * Copyright (c) 2016, 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 static jdk.vm.ci.common.InitTimer.timer;
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26
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27 import java.util.Arrays;
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28 import java.util.Collections;
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29 import java.util.HashMap;
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30 import java.util.List;
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31 import java.util.Map;
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32
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33 import jdk.vm.ci.common.InitTimer;
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34
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35 /**
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36 * Access to VM configuration data.
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37 */
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38 public final class HotSpotVMConfigStore {
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39
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40 /**
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41 * Gets the C++ symbols whose addresses are exposed by this object.
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42 *
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43 * @return an unmodifiable map from the symbol names to their addresses
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44 */
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45 public Map<String, Long> getAddresses() {
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46 return Collections.unmodifiableMap(vmAddresses);
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47 }
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48
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49 /**
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50 * Gets the C++ constants exposed by this object.
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51 *
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52 * @return an unmodifiable map from the names of C++ constants to their values
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53 */
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54 public Map<String, Long> getConstants() {
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55 return Collections.unmodifiableMap(vmConstants);
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56 }
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57
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58 /**
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59 * Gets the VM flags exposed by this object.
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60 *
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61 * @return an unmodifiable map from VM flag names to {@link VMFlag} objects
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62 */
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63 public Map<String, VMFlag> getFlags() {
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64 return Collections.unmodifiableMap(vmFlags);
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65 }
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66
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67 /**
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68 * Gets the C++ fields exposed by this object.
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69 *
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70 * @return an unmodifiable map from VM field names to {@link VMField} objects
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71 */
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72 public Map<String, VMField> getFields() {
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73 return Collections.unmodifiableMap(vmFields);
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74 }
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75
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76 /**
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77 * Gets the VM intrinsic descriptions exposed by this object.
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78 */
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79 public List<VMIntrinsicMethod> getIntrinsics() {
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80 return Collections.unmodifiableList(vmIntrinsics);
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81 }
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82
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83 final HashMap<String, VMField> vmFields;
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84 final HashMap<String, Long> vmConstants;
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85 final HashMap<String, Long> vmAddresses;
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86 final HashMap<String, VMFlag> vmFlags;
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87 final List<VMIntrinsicMethod> vmIntrinsics;
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88 final CompilerToVM compilerToVm;
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89
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90 /**
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91 * Reads the database of VM info. The return value encodes the info in a nested object array
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92 * that is described by the pseudo Java object {@code info} below:
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93 *
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94 * <pre>
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95 * info = [
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96 * VMField[] vmFields,
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97 * [String name, Long value, ...] vmConstants,
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98 * [String name, Long value, ...] vmAddresses,
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99 * VMFlag[] vmFlags
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100 * VMIntrinsicMethod[] vmIntrinsics
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101 * ]
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102 * </pre>
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103 */
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104 @SuppressWarnings("try")
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105 HotSpotVMConfigStore(CompilerToVM compilerToVm) {
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106 this.compilerToVm = compilerToVm;
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107 Object[] data;
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108 try (InitTimer t = timer("CompilerToVm readConfiguration")) {
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109 data = compilerToVm.readConfiguration();
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110 }
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111 assert data.length == 5 : data.length;
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112
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113 // @formatter:off
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114 VMField[] vmFieldsInfo = (VMField[]) data[0];
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115 Object[] vmConstantsInfo = (Object[]) data[1];
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116 Object[] vmAddressesInfo = (Object[]) data[2];
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117 VMFlag[] vmFlagsInfo = (VMFlag[]) data[3];
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118
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119 vmFields = new HashMap<>(vmFieldsInfo.length);
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120 vmConstants = new HashMap<>(vmConstantsInfo.length);
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121 vmAddresses = new HashMap<>(vmAddressesInfo.length);
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122 vmFlags = new HashMap<>(vmFlagsInfo.length);
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123 vmIntrinsics = Arrays.asList((VMIntrinsicMethod[]) data[4]);
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124 // @formatter:on
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125
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126 try (InitTimer t = timer("HotSpotVMConfigStore<init> fill maps")) {
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127 for (VMField vmField : vmFieldsInfo) {
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128 vmFields.put(vmField.name, vmField);
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129 }
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130
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131 for (int i = 0; i < vmConstantsInfo.length / 2; i++) {
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132 String name = (String) vmConstantsInfo[i * 2];
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133 Long value = (Long) vmConstantsInfo[i * 2 + 1];
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134 vmConstants.put(name, value);
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135 }
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136
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137 for (int i = 0; i < vmAddressesInfo.length / 2; i++) {
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138 String name = (String) vmAddressesInfo[i * 2];
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139 Long value = (Long) vmAddressesInfo[i * 2 + 1];
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140 vmAddresses.put(name, value);
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141 }
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142
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143 for (VMFlag vmFlag : vmFlagsInfo) {
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144 vmFlags.put(vmFlag.name, vmFlag);
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145 }
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146 }
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147 }
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148 }