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1 // Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // Handler for BTrace kernel categories |
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15 // |
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16 |
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17 #ifndef __BTRACEKERNELCATEGORYHANDLER_H__ |
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18 #define __BTRACEKERNELCATEGORYHANDLER_H__ |
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19 |
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20 |
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21 // Include files |
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22 #include <kernel/kernel.h> |
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23 #include "BTraceCategoryHandler.h" |
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24 #include "TraceCoreActivation.h" |
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25 |
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26 |
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27 // Forward declarations |
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28 class DBTraceOstCategoryBitmap; |
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29 |
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30 |
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31 /** |
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32 * Category handler for Symbian BTrace categories. |
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33 */ |
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34 NONSHARABLE_CLASS( DBTraceKernelCategoryHandler ) : public DBTraceCategoryHandler, public MTraceCoreActivationNotification |
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35 { |
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36 public: |
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37 |
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38 /** |
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39 * Constructor |
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40 */ |
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41 DBTraceKernelCategoryHandler(); |
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42 |
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43 /** |
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44 * Destructor |
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45 */ |
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46 ~DBTraceKernelCategoryHandler(); |
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47 |
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48 /** |
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49 * Initializes this handler |
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50 * |
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51 * @return one of the standard error codes |
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52 */ |
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53 TInt Init(); |
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54 |
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55 /** |
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56 * Called before writer is changed |
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57 * |
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58 * @param aWriter The new writer |
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59 */ |
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60 void PrepareSetWriter( DTraceCoreWriter* aWriter ); |
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61 |
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62 /** |
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63 * Primes the BTrace kernel categories |
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64 */ |
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65 void PrimeKernelCategories(); |
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66 |
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67 private: |
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68 |
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69 /** |
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70 * Notification that the activation state has changed |
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71 * |
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72 * @param aActivation the activation interface that was updated |
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73 * @param aFromSettings ETrue if activation was due to settings read, EFalse if from some other source |
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74 * @param aComponentId Component ID of the activation |
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75 */ |
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76 void ActivationChanged( MTraceCoreActivation& aActivation, TBool aFromSettings, |
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77 TUint32 aComponentId); |
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78 |
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79 /** |
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80 * MTraceCoreBTraceCategoryHandler implementation for Symbian-specific BTrace categories |
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81 * |
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82 * @param aHeader BTrace header |
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83 * @param aHeader2 Extra header data |
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84 * @param aContext The thread context in which this function was called |
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85 * @param a1 The first trace parameter |
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86 * @param a2 The second trace parameter |
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87 * @param a3 The third trace parameter |
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88 * @param aExtra Extra trace data |
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89 * @param aPc The program counter value |
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90 * @return ETrue if trace was processed |
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91 */ |
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92 TBool HandleFrame( TUint32 aHeader, TUint32 aHeader2, const TUint32 aContext, |
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93 const TUint32 a1, const TUint32 a2, const TUint32 a3, |
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94 const TUint32 aExtra, const TUint32 aPc ); |
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95 |
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96 /** |
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97 * Maps the BTrace category / sub-category to group / trace ID |
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98 * |
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99 * @param aCategory The BTrace category |
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100 * @param aSubCategory The BTrace sub-categoory |
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101 * @return the group / trace ID combination |
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102 */ |
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103 TUint32 MapCategoryToID( TUint8 aCategory, TUint8 aSubCategory ); |
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104 |
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105 /** |
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106 * Dfc function to prime the kernel categories |
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107 * |
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108 * @param aHandler pointer to this handler |
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109 */ |
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110 static void PrimeDfc( TAny* aHandler ); |
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111 |
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112 /** |
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113 * Called from the static DFC function to prime kernel categories |
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114 */ |
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115 void PrimeDfc(); |
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116 |
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117 /** |
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118 * Primes a category |
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119 * |
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120 * @param aCategory the category to be primed |
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121 */ |
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122 void PrimeCategory( TUint8 aCategory ); |
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123 |
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124 private: |
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125 |
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126 /** |
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127 * Handles this Multipart trace |
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128 * |
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129 * @param aHeader BTrace header |
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130 * @param aHeader2 Extra header data |
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131 * @param aContext The thread context in which this function was called |
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132 * @param aTotalMessageLength Total message length of this multipart message |
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133 * @param aComponentId Component ID |
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134 * @param aData The data |
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135 * @param aExtra Extra trace data |
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136 * @param aPc The program counter value |
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137 */ |
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138 TBool HandleMultiPart( TUint32 aHeader, TUint32 aHeader2, const TUint32 aContext, |
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139 const TUint32 aTotalMessageLength, const TUint32 aComponentId, |
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140 const TUint32 aData, const TUint32 aExtra, const TUint32 aPc ); |
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141 |
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142 /** |
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143 * Checks if given trace is a Multipart trace |
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144 * |
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145 * @param aHeader Header data |
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146 * @param aHeader2 Extra header data |
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147 */ |
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148 inline TBool CheckMultiPart( TUint32 aHeader, TUint32 aHeader2 ); |
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149 |
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150 /** |
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151 * Calculates data start offset |
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152 * |
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153 * @param aHeader BTrace header |
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154 */ |
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155 TUint32 CalculateDataStartOffset( TUint32 aHeader ); |
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156 |
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157 /** |
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158 * This uses the same bitmap as the OST category handler |
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159 */ |
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160 DBTraceOstCategoryBitmap* iTraceBitmap; |
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161 |
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162 /** |
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163 * Dfc used when priming kernel categories |
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164 */ |
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165 TDfc iPrimeDfc; |
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166 |
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167 /** |
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168 * Saved activation item for multipart traces |
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169 */ |
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170 RArray< TMultiPartActivationInfo > iMultiPartActivationInfos; |
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171 }; |
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172 |
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173 #endif |
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174 |
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175 // End of File |