Mercurial > hg > graal-compiler
annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/snippets/HotSpotSnippetUtils.java @ 8490:1567c6cc6561
Towards porting G1 WBs
author | Christos Kotselidis <christos.kotselidis@oracle.com> |
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date | Wed, 20 Feb 2013 16:15:43 +0100 |
parents | 0ae87cf94914 |
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1 /* |
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2 * Copyright (c) 2012, 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 com.oracle.graal.hotspot.snippets; |
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24 |
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25 import static com.oracle.graal.snippets.nodes.BranchProbabilityNode.*; |
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26 |
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27 import com.oracle.graal.api.code.*; |
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28 import com.oracle.graal.api.meta.*; |
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29 import com.oracle.graal.graph.Node.ConstantNodeParameter; |
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30 import com.oracle.graal.graph.Node.NodeIntrinsic; |
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31 import com.oracle.graal.hotspot.*; |
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32 import com.oracle.graal.hotspot.meta.*; |
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33 import com.oracle.graal.hotspot.nodes.*; |
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34 import com.oracle.graal.nodes.extended.*; |
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35 import com.oracle.graal.snippets.Snippet.Fold; |
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36 import com.oracle.graal.word.*; |
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37 |
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38 //JaCoCo Exclude |
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39 |
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40 /** |
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41 * A collection of methods used in HotSpot snippets and substitutions. |
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42 */ |
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43 public class HotSpotSnippetUtils { |
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44 |
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45 public static HotSpotVMConfig config() { |
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46 return HotSpotGraalRuntime.getInstance().getConfig(); |
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47 } |
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48 |
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49 @Fold |
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50 public static boolean verifyOops() { |
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51 return config().verifyOops; |
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52 } |
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53 |
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54 @Fold |
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55 public static int threadTlabTopOffset() { |
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56 return config().threadTlabTopOffset; |
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57 } |
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58 |
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59 @Fold |
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60 public static int threadTlabEndOffset() { |
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61 return config().threadTlabEndOffset; |
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62 } |
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63 |
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64 @Fold |
7222 | 65 public static int threadObjectOffset() { |
7227 | 66 return config().threadObjectOffset; |
7222 | 67 } |
68 | |
69 @Fold | |
70 public static int osThreadOffset() { | |
7227 | 71 return config().osThreadOffset; |
7222 | 72 } |
73 | |
74 @Fold | |
75 public static int osThreadInterruptedOffset() { | |
7227 | 76 return config().osThreadInterruptedOffset; |
7222 | 77 } |
78 | |
79 @Fold | |
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80 public static Kind wordKind() { |
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81 return HotSpotGraalRuntime.getInstance().getTarget().wordKind; |
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82 } |
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83 |
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84 @Fold |
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85 public static Register threadRegister() { |
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86 return HotSpotGraalRuntime.getInstance().getRuntime().threadRegister(); |
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87 } |
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88 |
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89 @Fold |
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90 public static Register stackPointerRegister() { |
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91 return HotSpotGraalRuntime.getInstance().getRuntime().stackPointerRegister(); |
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92 } |
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93 |
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94 @Fold |
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95 public static int wordSize() { |
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96 return HotSpotGraalRuntime.getInstance().getTarget().wordSize; |
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97 } |
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98 |
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99 @Fold |
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100 public static int pageSize() { |
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101 return HotSpotGraalRuntime.getInstance().getTarget().pageSize; |
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102 } |
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103 |
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104 @Fold |
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105 public static int prototypeMarkWordOffset() { |
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106 return config().prototypeMarkWordOffset; |
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107 } |
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108 |
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109 @Fold |
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110 public static long arrayPrototypeMarkWord() { |
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111 return config().arrayPrototypeMarkWord; |
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112 } |
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113 |
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114 @Fold |
7222 | 115 public static int klassAccessFlagsOffset() { |
7227 | 116 return config().klassAccessFlagsOffset; |
7222 | 117 } |
118 | |
119 @Fold | |
120 public static int klassLayoutHelperOffset() { | |
7227 | 121 return config().klassLayoutHelperOffset; |
7222 | 122 } |
123 | |
124 @Fold | |
125 public static int arrayKlassLayoutHelperIdentifier() { | |
7227 | 126 return config().arrayKlassLayoutHelperIdentifier; |
7222 | 127 } |
128 | |
129 @Fold | |
130 public static int arrayKlassComponentMirrorOffset() { | |
7227 | 131 return config().arrayKlassComponentMirrorOffset; |
7222 | 132 } |
133 | |
134 @Fold | |
135 public static int klassSuperKlassOffset() { | |
7227 | 136 return config().klassSuperKlassOffset; |
7222 | 137 } |
138 | |
139 @Fold | |
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140 public static int markOffset() { |
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141 return config().markOffset; |
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142 } |
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143 |
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144 @Fold |
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145 public static int unlockedMask() { |
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146 return config().unlockedMask; |
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147 } |
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148 |
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149 /** |
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150 * Mask for a biasable, locked or unlocked mark word. |
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151 * |
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152 * <pre> |
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153 * +----------------------------------+-+-+ |
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154 * | 1|1|1| |
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155 * +----------------------------------+-+-+ |
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156 * </pre> |
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157 * |
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158 */ |
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159 @Fold |
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160 public static int biasedLockMaskInPlace() { |
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161 return config().biasedLockMaskInPlace; |
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162 } |
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163 |
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164 @Fold |
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165 public static int epochMaskInPlace() { |
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166 return config().epochMaskInPlace; |
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167 } |
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168 |
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169 /** |
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170 * Pattern for a biasable, unlocked mark word. |
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171 * |
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172 * <pre> |
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173 * +----------------------------------+-+-+ |
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174 * | 1|0|1| |
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175 * +----------------------------------+-+-+ |
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176 * </pre> |
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177 * |
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178 */ |
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179 @Fold |
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180 public static int biasedLockPattern() { |
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181 return config().biasedLockPattern; |
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182 } |
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183 |
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184 @Fold |
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185 public static int ageMaskInPlace() { |
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186 return config().ageMaskInPlace; |
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187 } |
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188 |
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189 @Fold |
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190 public static int hubOffset() { |
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191 return config().hubOffset; |
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192 } |
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193 |
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194 @Fold |
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195 public static int metaspaceArrayLengthOffset() { |
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196 return config().metaspaceArrayLengthOffset; |
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197 } |
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198 |
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199 @Fold |
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200 public static int metaspaceArrayBaseOffset() { |
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201 return config().metaspaceArrayBaseOffset; |
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202 } |
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203 |
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204 @Fold |
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205 public static int arrayLengthOffset() { |
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206 return config().arrayLengthOffset; |
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207 } |
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208 |
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209 @Fold |
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210 public static int arrayBaseOffset(Kind elementKind) { |
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211 return HotSpotRuntime.getArrayBaseOffset(elementKind); |
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212 } |
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213 |
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214 @Fold |
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215 public static int arrayIndexScale(Kind elementKind) { |
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216 return HotSpotRuntime.getArrayIndexScale(elementKind); |
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217 } |
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218 |
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219 @Fold |
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220 public static int cardTableShift() { |
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221 return config().cardtableShift; |
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222 } |
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223 |
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224 @Fold |
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225 public static long cardTableStart() { |
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226 return config().cardtableStartAddress; |
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227 } |
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228 |
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229 @Fold |
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230 public static int g1CardQueueIndexOffset() { |
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231 return config().g1CardQueueIndexOffset; |
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232 } |
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233 |
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234 @Fold |
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235 public static int g1CardQueueBufferOffset() { |
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236 return config().g1CardQueueBufferOffset; |
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237 } |
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238 |
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239 @Fold |
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240 public static int logOfHRGrainBytes() { |
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241 return config().logOfHRGrainBytes; |
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242 } |
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243 |
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244 @Fold |
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245 public static int g1SATBQueueMarkingOffset() { |
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246 return config().g1SATBQueueMarkingOffset; |
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247 } |
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248 |
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249 @Fold |
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250 public static int g1SATBQueueIndexOffset() { |
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251 return config().g1SATBQueueIndexOffset; |
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252 } |
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253 |
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254 @Fold |
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255 public static int g1SATBQueueBufferOffset() { |
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256 return config().g1SATBQueueBufferOffset; |
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257 } |
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258 |
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259 @Fold |
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260 public static int superCheckOffsetOffset() { |
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261 return config().superCheckOffsetOffset; |
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262 } |
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263 |
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264 @Fold |
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265 public static int secondarySuperCacheOffset() { |
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266 return config().secondarySuperCacheOffset; |
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267 } |
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268 |
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269 @Fold |
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270 public static int secondarySupersOffset() { |
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271 return config().secondarySupersOffset; |
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272 } |
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273 |
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274 @Fold |
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275 public static int lockDisplacedMarkOffset() { |
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276 return config().basicLockDisplacedHeaderOffset; |
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277 } |
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278 |
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279 @Fold |
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280 public static boolean useBiasedLocking() { |
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281 return config().useBiasedLocking; |
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282 } |
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283 |
7222 | 284 @Fold |
285 static int uninitializedIdentityHashCodeValue() { | |
7227 | 286 return config().uninitializedIdentityHashCodeValue; |
7222 | 287 } |
288 | |
289 @Fold | |
290 static int identityHashCodeShift() { | |
7227 | 291 return config().identityHashCodeShift; |
7222 | 292 } |
293 | |
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294 /** |
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295 * Loads the hub from a object, null checking it first. |
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296 */ |
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297 public static Word loadHub(Object object) { |
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298 return loadHubIntrinsic(object, wordKind()); |
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299 } |
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300 |
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301 public static Object verifyOop(Object object) { |
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302 if (verifyOops()) { |
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303 VerifyOopStubCall.call(object); |
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304 } |
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305 return object; |
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306 } |
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307 |
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308 /** |
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309 * Gets the value of the stack pointer register as a Word. |
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310 */ |
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311 public static Word stackPointer() { |
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312 return HotSpotSnippetUtils.registerAsWord(stackPointerRegister()); |
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313 } |
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314 |
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315 /** |
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316 * Gets the value of the thread register as a Word. |
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317 */ |
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318 public static Word thread() { |
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319 return HotSpotSnippetUtils.registerAsWord(threadRegister()); |
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320 } |
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321 |
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322 public static Word loadWordFromObject(Object object, int offset) { |
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323 return loadWordFromObjectIntrinsic(object, 0, offset, wordKind()); |
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324 } |
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325 |
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326 @NodeIntrinsic(value = RegisterNode.class, setStampFromReturnType = true) |
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327 public static native Word registerAsWord(@ConstantNodeParameter Register register); |
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328 |
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329 @NodeIntrinsic(value = UnsafeLoadNode.class, setStampFromReturnType = true) |
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330 private static native Word loadWordFromObjectIntrinsic(Object object, @ConstantNodeParameter int displacement, long offset, @ConstantNodeParameter Kind wordKind); |
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331 |
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332 @NodeIntrinsic(value = LoadHubNode.class, setStampFromReturnType = true) |
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333 static native Word loadHubIntrinsic(Object object, @ConstantNodeParameter Kind word); |
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334 |
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335 @Fold |
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336 public static int log2WordSize() { |
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337 return CodeUtil.log2(wordSize()); |
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338 } |
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339 |
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340 @Fold |
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341 public static int klassStateOffset() { |
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342 return config().klassStateOffset; |
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343 } |
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344 |
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345 @Fold |
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346 public static int klassModifierFlagsOffset() { |
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347 return config().klassModifierFlagsOffset; |
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348 } |
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349 |
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350 @Fold |
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351 public static int klassOffset() { |
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352 return config().klassOffset; |
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353 } |
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354 |
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355 @Fold |
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356 public static int classMirrorOffset() { |
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357 return config().classMirrorOffset; |
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358 } |
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359 |
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360 @Fold |
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361 public static int klassInstanceSizeOffset() { |
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362 return config().klassInstanceSizeOffset; |
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363 } |
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364 |
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365 @Fold |
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366 public static long heapTopAddress() { |
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367 return config().heapTopAddress; |
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368 } |
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369 |
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370 @Fold |
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371 public static long heapEndAddress() { |
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372 return config().heapEndAddress; |
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373 } |
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374 |
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375 @Fold |
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376 public static int threadTlabStartOffset() { |
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377 return config().threadTlabStartOffset; |
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378 } |
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379 |
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380 @Fold |
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381 public static long tlabIntArrayMarkWord() { |
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382 return config().tlabIntArrayMarkWord; |
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383 } |
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384 |
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385 @Fold |
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386 public static boolean inlineContiguousAllocationSupported() { |
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387 return config().inlineContiguousAllocationSupported; |
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388 } |
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389 |
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390 @Fold |
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391 public static int tlabAlignmentReserveInHeapWords() { |
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392 return config().tlabAlignmentReserve; |
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393 } |
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394 |
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395 @Fold |
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396 public static int threadTlabSizeOffset() { |
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397 return config().threadTlabSizeOffset; |
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398 } |
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399 |
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400 @Fold |
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401 public static int threadAllocatedBytesOffset() { |
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402 return config().threadAllocatedBytesOffset; |
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403 } |
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404 |
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405 @Fold |
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406 public static int klassStateFullyInitialized() { |
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407 return config().klassStateFullyInitialized; |
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408 } |
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409 |
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410 @Fold |
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411 public static int tlabRefillWasteLimitOffset() { |
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412 return config().tlabRefillWasteLimitOffset; |
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413 } |
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414 |
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415 @Fold |
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416 public static int tlabNumberOfRefillsOffset() { |
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417 return config().tlabNumberOfRefillsOffset; |
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418 } |
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419 |
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420 @Fold |
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421 public static int tlabFastRefillWasteOffset() { |
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422 return config().tlabFastRefillWasteOffset; |
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423 } |
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424 |
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425 @Fold |
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426 public static int tlabSlowAllocationsOffset() { |
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427 return config().tlabSlowAllocationsOffset; |
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428 } |
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429 |
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430 @Fold |
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431 public static int tlabRefillWasteIncrement() { |
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432 return config().tlabRefillWasteIncrement; |
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433 } |
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434 |
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435 @Fold |
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436 public static boolean tlabStats() { |
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437 return config().tlabStats; |
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438 } |
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439 |
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440 @Fold |
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441 public static int layoutHelperOffset() { |
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442 return config().layoutHelperOffset; |
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443 } |
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444 |
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445 @Fold |
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446 public static int layoutHelperHeaderSizeShift() { |
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447 return config().layoutHelperHeaderSizeShift; |
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448 } |
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449 |
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450 @Fold |
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451 public static int layoutHelperHeaderSizeMask() { |
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452 return config().layoutHelperHeaderSizeMask; |
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453 } |
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454 |
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455 @Fold |
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456 public static int layoutHelperLog2ElementSizeShift() { |
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457 return config().layoutHelperLog2ElementSizeShift; |
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458 } |
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459 |
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460 @Fold |
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461 public static int layoutHelperLog2ElementSizeMask() { |
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462 return config().layoutHelperLog2ElementSizeMask; |
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463 } |
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464 |
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465 @Fold |
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466 public static int layoutHelperElementTypeShift() { |
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467 return config().layoutHelperElementTypeShift; |
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468 } |
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469 |
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470 @Fold |
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471 public static int layoutHelperElementTypeMask() { |
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472 return config().layoutHelperElementTypeMask; |
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473 } |
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474 |
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475 @Fold |
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476 public static int layoutHelperElementTypePrimitiveInPlace() { |
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|
477 System.out.println(String.format("%x", config().layoutHelperElementTypePrimitiveInPlace)); |
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478 return config().layoutHelperElementTypePrimitiveInPlace; |
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479 } |
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480 |
6362
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481 static { |
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482 assert arrayIndexScale(Kind.Byte) == 1; |
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483 assert arrayIndexScale(Kind.Boolean) == 1; |
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484 assert arrayIndexScale(Kind.Char) == 2; |
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485 assert arrayIndexScale(Kind.Short) == 2; |
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486 assert arrayIndexScale(Kind.Int) == 4; |
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487 assert arrayIndexScale(Kind.Long) == 8; |
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488 assert arrayIndexScale(Kind.Float) == 4; |
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489 assert arrayIndexScale(Kind.Double) == 8; |
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490 } |
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491 |
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492 static int computeHashCode(Object x) { |
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493 Word mark = loadWordFromObject(x, markOffset()); |
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494 |
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495 // this code is independent from biased locking (although it does not look that way) |
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496 final Word biasedLock = mark.and(biasedLockMaskInPlace()); |
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497 if (biasedLock.equal(Word.unsigned(unlockedMask()))) { |
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498 probability(FAST_PATH_PROBABILITY); |
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499 int hash = (int) mark.unsignedShiftRight(identityHashCodeShift()).rawValue(); |
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500 if (hash != uninitializedIdentityHashCodeValue()) { |
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|
501 probability(FAST_PATH_PROBABILITY); |
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502 return hash; |
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503 } |
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504 } |
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505 |
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|
506 return IdentityHashCodeStubCall.call(x); |
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507 } |
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508 } |