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annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/snippets/WriteBarrierSnippets.java @ 8494:7c9dbc80fd7d

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-Add more instrumentation
author Christos Kotselidis <christos.kotselidis@oracle.com>
date Tue, 26 Feb 2013 19:49:00 +0100
parents 9412b1915547
children 9131c075be7b
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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.hotspot.snippets.HotSpotSnippetUtils.*;
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26 import static com.oracle.graal.snippets.SnippetTemplate.*;
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27
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28 import com.oracle.graal.api.code.*;
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29 import com.oracle.graal.api.meta.*;
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30 import com.oracle.graal.hotspot.nodes.*;
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31 import com.oracle.graal.nodes.extended.*;
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32 import com.oracle.graal.nodes.spi.*;
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33 import com.oracle.graal.snippets.*;
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34 import com.oracle.graal.snippets.Snippet.ConstantParameter;
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35 import com.oracle.graal.snippets.Snippet.Parameter;
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36 import com.oracle.graal.snippets.SnippetTemplate.AbstractTemplates;
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37 import com.oracle.graal.snippets.SnippetTemplate.Arguments;
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38 import com.oracle.graal.snippets.SnippetTemplate.Key;
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39 import com.oracle.graal.word.*;
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40
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41 public class WriteBarrierSnippets implements SnippetsInterface {
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42
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43 private static final boolean TRACE = true;
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44
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45 @Snippet
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46 public static void g1PreWriteBarrier(@Parameter("object") Object object, @Parameter("location") Object location, @ConstantParameter("doLoad") boolean doLoad) {
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47 Word thread = thread();
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48 trace(WriteBarrierSnippets.TRACE, "---------------G1 PRE Enter: 0x%016lx\n", thread);
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49 Pointer oop = Word.fromObject(object);
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50 Pointer field = Word.fromArray(object, location);
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51 Pointer previousOop = field.readWord(0);
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52
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53 Word markingAddress = thread.readWord(HotSpotSnippetUtils.g1SATBQueueMarkingOffset());
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54 Word bufferAddress = thread.readWord(HotSpotSnippetUtils.g1SATBQueueBufferOffset());
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55 Word indexAddress = thread.add(HotSpotSnippetUtils.g1SATBQueueIndexOffset());
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56 Word indexValue = thread.readWord(HotSpotSnippetUtils.g1SATBQueueIndexOffset());
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57
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58 trace(WriteBarrierSnippets.TRACE, " G1 PRE thread address: 0x%16lx\n", thread);
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59 trace(WriteBarrierSnippets.TRACE, " G1 PRE oop: 0x%16lx\n", oop);
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60 trace(WriteBarrierSnippets.TRACE, " G1 PRE field: 0x%16lx\n", field);
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61 trace(WriteBarrierSnippets.TRACE, " G1 PRE previous OOP: 0x%16lx\n", previousOop);
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62 trace(WriteBarrierSnippets.TRACE, " G1 PRE QueueMarkingOffset: 0x%016lx\n", Word.signed(HotSpotSnippetUtils.g1SATBQueueMarkingOffset()));
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63 trace(WriteBarrierSnippets.TRACE, " G1 PRE QueueBufferOffset: 0x%016lx\n", Word.signed(HotSpotSnippetUtils.g1SATBQueueBufferOffset()));
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64 trace(WriteBarrierSnippets.TRACE, " G1 PRE QueueIndexOffset: 0x%016lx\n", Word.signed(HotSpotSnippetUtils.g1SATBQueueIndexOffset()));
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65 trace(WriteBarrierSnippets.TRACE, " G1 PRE markingAddress: 0x%016lx\n", markingAddress);
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66 trace(WriteBarrierSnippets.TRACE, " G1 PRE bufferAddress: 0x%016lx\n", bufferAddress);
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67 trace(WriteBarrierSnippets.TRACE, " G1 PRE indexAddress: 0x%016lx\n", indexAddress);
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68 trace(WriteBarrierSnippets.TRACE, " G1 PRE indexValue: 0x%016lx\n", indexValue);// in
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69 // bytes
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70
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71 if (markingAddress.notEqual(Word.zero())) {
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72 if (doLoad) {
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73 previousOop = field.readWord(0);
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74 trace(WriteBarrierSnippets.TRACE, " G1 PRE Do Load previous OOP: 0x%16lx\n", previousOop);
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75 }
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76 if (previousOop.notEqual(Word.zero())) {
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77 if (indexValue.readInt(0) != 0) {
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78 Word nextIndex = indexAddress.subtract(Word.signed(HotSpotSnippetUtils.wordSize()));
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79 Word nextIndexX = nextIndex;
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80 Word logAddress = bufferAddress.add(nextIndexX);
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81 logAddress.writeWord(0, previousOop);
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82 indexAddress.writeWord(0, nextIndex);
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83 trace(WriteBarrierSnippets.TRACE, " G1 PRE nextIndexindex: 0x%016lx\n", nextIndex);
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84 } else {
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85 WriteBarrierPostStubCall.call(object);
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86 }
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87 }
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88 }
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89
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90 trace(WriteBarrierSnippets.TRACE, "---------------G1 PRE Exit: 0x%016lx\n", indexValue);
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91
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92 }
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93
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94 @Snippet
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95 public static void g1PostWriteBarrier(@Parameter("object") Object object, @Parameter("value") Object value, @Parameter("location") Object location) {
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96 Word thread = thread();
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97 trace(WriteBarrierSnippets.TRACE, "##############G1 POST Enter: 0x%016lx\n", thread);
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98
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99 Pointer oop = Word.fromObject(object);
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100 Pointer field = Word.fromArray(object, location);
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101 Pointer writtenValue = Word.fromObject(value);
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102
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103 Word bufferAddress = thread.readWord(HotSpotSnippetUtils.g1CardQueueBufferOffset());
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104 Word indexAddress = thread.readWord(HotSpotSnippetUtils.g1CardQueueIndexOffset());
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105 Word indexValue = thread.readWord(HotSpotSnippetUtils.g1CardQueueIndexOffset());
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106
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107 trace(WriteBarrierSnippets.TRACE, " G1 POST thread address: 0x%16lx\n", thread);
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108 trace(WriteBarrierSnippets.TRACE, " G1 POST bufferAddress: 0x%016lx\n", bufferAddress);
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109 trace(WriteBarrierSnippets.TRACE, " G1 POST indexAddress: 0x%016lx\n", indexAddress);
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110 trace(WriteBarrierSnippets.TRACE, " G1 POST indexValue: 0x%016lx\n", indexValue);
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111 trace(WriteBarrierSnippets.TRACE, " G1 POST written value: 0x%016lx\n", writtenValue);
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112
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113 // Card Table
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114 Word base = (Word) oop.unsignedShiftRight(cardTableShift());
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115 long startAddress = cardTableStart();
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116 int displacement = 0;
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117 if (((int) startAddress) == startAddress) {
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118 displacement = (int) startAddress;
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119 } else {
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120 base = base.add(Word.unsigned(cardTableStart()));
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121 }
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122
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123 // if (writtenValue.notEqual(Word.zero())) {
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124 Word xorResult = (((Word) field.xor(writtenValue)).unsignedShiftRight(HotSpotSnippetUtils.logOfHRGrainBytes()));
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125 trace(WriteBarrierSnippets.TRACE, " G1 POST xor result: 0x%016lx\n", xorResult);
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126
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127 if (xorResult.notEqual(Word.zero())) {
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128 if (writtenValue.notEqual(Word.zero())) {
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129 Word cardValue = base.readWord(displacement);
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130 trace(WriteBarrierSnippets.TRACE, " G1 POST cardValue: 0x%016lx\n", cardValue);
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131
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132 if (cardValue.notEqual(Word.zero())) {
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133 base.writeWord(displacement, Word.zero()); // smash zero into card
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134 if (indexValue.readInt(0) != 0) {
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135 Word nextIndex = indexAddress.subtract(Word.signed(HotSpotSnippetUtils.wordSize()));
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136 trace(WriteBarrierSnippets.TRACE, " G1 POST nextIndex: 0x%016lx\n", nextIndex);
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137
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138 Word nextIndexX = nextIndex;
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139 Word logAddress = bufferAddress.add(nextIndexX);
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140 trace(WriteBarrierSnippets.TRACE, " G1 POST logAddress: 0x%016lx\n", logAddress);
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141
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142 logAddress.writeWord(0, base.add(displacement));
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143 indexAddress.writeWord(0, nextIndex);
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144 } else {
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145 WriteBarrierPostStubCall.call(object);
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146 }
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147 }
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148 }
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149 }
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150 // } else { Object clone intrinsic(?!)
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151 // }
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152 trace(WriteBarrierSnippets.TRACE, "#################G1 POST Exit: 0x%016lx\n", thread);
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153
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154 }
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155
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156 private static void trace(boolean enabled, String format, WordBase value) {
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157 if (enabled) {
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158 Log.printf(format, value.rawValue());
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159 }
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160 }
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161
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162 @Snippet
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163 public static void serialFieldWriteBarrier(@Parameter("object") Object object) {
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164 verifyOop(object);
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165 Pointer oop = Word.fromObject(object);
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166 Word base = (Word) oop.unsignedShiftRight(cardTableShift());
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167 long startAddress = cardTableStart();
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168 int displacement = 0;
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169 if (((int) startAddress) == startAddress) {
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170 displacement = (int) startAddress;
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171 } else {
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172 base = base.add(Word.unsigned(cardTableStart()));
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173 }
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174 base.writeWord(displacement, Word.zero());
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175 }
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176
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177 @Snippet
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178 public static void serialArrayWriteBarrier(@Parameter("object") Object object, @Parameter("location") Object location) {
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179 Pointer oop = Word.fromArray(object, location);
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180 Word base = (Word) oop.unsignedShiftRight(cardTableShift());
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181 long startAddress = cardTableStart();
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182 int displacement = 0;
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183 if (((int) startAddress) == startAddress) {
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184 displacement = (int) startAddress;
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185 } else {
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186 base = base.add(Word.unsigned(cardTableStart()));
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187 }
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188 base.writeWord(displacement, Word.zero());
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189 }
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190
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191 public static class Templates extends AbstractTemplates<WriteBarrierSnippets> {
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192
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193 private final ResolvedJavaMethod serialFieldWriteBarrier;
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194 private final ResolvedJavaMethod serialArrayWriteBarrier;
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195 private final ResolvedJavaMethod g1PreWriteBarrier;
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196 private final ResolvedJavaMethod g1PostWriteBarrier;
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197 private final boolean useG1GC;
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198
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199 public Templates(CodeCacheProvider runtime, Assumptions assumptions, TargetDescription target, boolean useG1GC) {
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200 super(runtime, assumptions, target, WriteBarrierSnippets.class);
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201 serialFieldWriteBarrier = snippet("serialFieldWriteBarrier", Object.class);
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202 serialArrayWriteBarrier = snippet("serialArrayWriteBarrier", Object.class, Object.class);
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203 g1PreWriteBarrier = snippet("g1PreWriteBarrier", Object.class, Object.class, boolean.class);
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204 g1PostWriteBarrier = snippet("g1PostWriteBarrier", Object.class, Object.class, Object.class);
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205 this.useG1GC = useG1GC;
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206 System.out.println(" useG1GC? " + (useG1GC ? "true" : "false"));
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207 }
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diff changeset
208
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209 public void lower(ArrayWriteBarrier arrayWriteBarrier, @SuppressWarnings("unused") LoweringTool tool) {
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210 ResolvedJavaMethod method = serialArrayWriteBarrier;
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211 Key key = new Key(method);
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212 Arguments arguments = new Arguments();
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213 arguments.add("object", arrayWriteBarrier.object());
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214 arguments.add("location", arrayWriteBarrier.location());
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215 SnippetTemplate template = cache.get(key, assumptions);
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diff changeset
216 template.instantiate(runtime, arrayWriteBarrier, DEFAULT_REPLACER, arguments);
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diff changeset
217 }
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diff changeset
218
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219 public void lower(FieldWriteBarrier fieldWriteBarrier, @SuppressWarnings("unused") LoweringTool tool) {
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220 ResolvedJavaMethod method = serialFieldWriteBarrier;
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221 Key key = new Key(method);
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222 Arguments arguments = new Arguments();
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223 arguments.add("object", fieldWriteBarrier.object());
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diff changeset
224 SnippetTemplate template = cache.get(key, assumptions);
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diff changeset
225 template.instantiate(runtime, fieldWriteBarrier, DEFAULT_REPLACER, arguments);
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226 }
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227
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228 public void lower(WriteBarrierPre writeBarrierPre, @SuppressWarnings("unused") LoweringTool tool) {
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diff changeset
229 ResolvedJavaMethod method = g1PreWriteBarrier;
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diff changeset
230 Key key = new Key(method);
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diff changeset
231 key.add("doLoad", writeBarrierPre.doLoad());
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232 Arguments arguments = new Arguments();
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233 arguments.add("object", writeBarrierPre.object());
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234 arguments.add("location", writeBarrierPre.location());
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diff changeset
235 SnippetTemplate template = cache.get(key, assumptions);
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diff changeset
236 template.instantiate(runtime, writeBarrierPre, DEFAULT_REPLACER, arguments);
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237 }
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238
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239 public void lower(WriteBarrierPost writeBarrierPost, @SuppressWarnings("unused") LoweringTool tool) {
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240 ResolvedJavaMethod method = g1PostWriteBarrier;
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diff changeset
241 Key key = new Key(method);
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242 Arguments arguments = new Arguments();
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243 arguments.add("object", writeBarrierPost.object());
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244 arguments.add("location", writeBarrierPost.location());
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245 arguments.add("value", writeBarrierPost.value());
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1567c6cc6561 Towards porting G1 WBs
Christos Kotselidis <christos.kotselidis@oracle.com>
parents: 8489
diff changeset
246 SnippetTemplate template = cache.get(key, assumptions);
1567c6cc6561 Towards porting G1 WBs
Christos Kotselidis <christos.kotselidis@oracle.com>
parents: 8489
diff changeset
247 template.instantiate(runtime, writeBarrierPost, DEFAULT_REPLACER, arguments);
1567c6cc6561 Towards porting G1 WBs
Christos Kotselidis <christos.kotselidis@oracle.com>
parents: 8489
diff changeset
248 }
8492
286a49d423c9 -Snippetization of CMS WriteBarriers
Christos Kotselidis <christos.kotselidis@oracle.com>
parents: 8491
diff changeset
249
8488
225c984588ee -Snippetization of CMS write barriers
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
diff changeset
250 }
225c984588ee -Snippetization of CMS write barriers
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
diff changeset
251 }