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annotate graal/com.oracle.max.graal.hotspot/src/com/oracle/max/graal/hotspot/ri/HOTSPOTPROFILINGINFO.JAVA @ 4446:48756b901156

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bugfixes
author Christian Haeubl <christian.haeubl@oracle.com>
date Tue, 24 Jan 2012 13:25:16 -0800
parents
children 00a04b57a046
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4446
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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.max.graal.hotspot.ri;
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24
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25 import com.oracle.max.cri.ri.*;
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26 import com.oracle.max.graal.hotspot.*;
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27 import com.oracle.max.graal.hotspot.Compiler;
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28
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29
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30 public final class HotSpotProfilingInfo extends CompilerObject implements RiProfilingInfo {
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31
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32 /**
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33 *
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34 */
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35 private static final long serialVersionUID = -8307682725047864875L;
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36
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37 private int position;
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38 private int hintPosition;
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39 private int hintBCI;
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40 private HotSpotMethodDataAccessor dataAccessor;
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41 private HotSpotMethodData methodData;
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42
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43 public HotSpotProfilingInfo(Compiler compiler, HotSpotMethodData methodData) {
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44 super(compiler);
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45 this.methodData = methodData;
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46 hintPosition = 0;
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47 hintBCI = -1;
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48 }
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49
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50 @Override
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51 public RiTypeProfile getTypeProfile(int bci) {
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52 findBCI(bci);
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53 return dataAccessor.getTypeProfile(methodData, position);
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54 }
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55
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56 @Override
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57 public double getBranchTakenProbability(int bci) {
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58 findBCI(bci);
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59 return dataAccessor.getBranchTakenProbability(methodData, position);
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60 }
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61
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62 @Override
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63 public double[] getSwitchProbabilities(int bci) {
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64 findBCI(bci);
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65 return dataAccessor.getSwitchProbabilities(methodData, position);
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66 }
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67
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68 @Override
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69 public boolean getImplicitExceptionSeen(int bci) {
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70 findBCI(bci);
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71 return dataAccessor.getImplicitExceptionSeen(methodData, position);
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72 }
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73
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74 @Override
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75 public int getExecutionCount(int bci) {
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76 findBCI(bci);
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77 return dataAccessor.getExecutionCount(methodData, position);
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78 }
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79
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80 private void findBCI(int targetBCI) {
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81 assert targetBCI >= 0 : "invalid BCI";
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82
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83 if (methodData.hasNormalData()) {
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84 int currentPosition = targetBCI < hintBCI ? 0 : hintPosition;
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85 HotSpotMethodDataAccessor currentAccessor;
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86 while ((currentAccessor = methodData.getNormalData(currentPosition)) != null) {
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87 int currentBCI = currentAccessor.getBCI(methodData, currentPosition);
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88 if (currentBCI == targetBCI) {
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89 normalDataFound(currentAccessor, currentPosition, currentBCI);
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90 return;
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91 } else if (currentBCI > targetBCI) {
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92 break;
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93 }
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94 currentPosition = currentPosition + currentAccessor.getSize(methodData, currentPosition);
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95 }
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96 }
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97
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98 if (methodData.hasExtraData()) {
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99 int currentPosition = 0;
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100 HotSpotMethodDataAccessor currentAccessor;
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101 while ((currentAccessor = methodData.getExtraData(currentPosition)) != null) {
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102 int currentBCI = currentAccessor.getBCI(methodData, currentPosition);
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103 if (currentBCI == targetBCI) {
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104 extraDataFound(currentAccessor, currentPosition);
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105 return;
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106 }
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107 currentPosition = currentPosition + currentAccessor.getSize(methodData, currentPosition);
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108 }
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109 }
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110
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111 noDataFound();
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112 }
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113
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114 private void normalDataFound(HotSpotMethodDataAccessor data, int pos, int bci) {
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115 setCurrentData(data, pos);
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116 this.hintPosition = position;
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117 this.hintBCI = bci;
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118 }
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119
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120 private void extraDataFound(HotSpotMethodDataAccessor data, int pos) {
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121 setCurrentData(data, pos);
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122 }
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123
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124 private void noDataFound() {
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125 setCurrentData(HotSpotMethodData.getNoDataAccessor(), -1);
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126 }
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127
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128 private void setCurrentData(HotSpotMethodDataAccessor dataAccessor, int position) {
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129 this.dataAccessor = dataAccessor;
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130 this.position = position;
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131 }
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132 }