1 /* |
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2 * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: trace logs |
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15 * |
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16 */ |
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17 |
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18 #ifndef UISERVICETABTRACER_H |
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19 #define UISERVICETABTRACER_H |
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20 |
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21 #include <e32base.h> |
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22 #include <flogger.h> |
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23 #include "vimpstbuilddefinitions.h" |
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24 |
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25 #ifdef CHAT_ENABLE_DEBUG_PRINT |
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26 |
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27 // -------------------------------------------------------------------------- |
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28 // Define tracer logging method |
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29 // 0 = Logging off |
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30 // 1 = Log to RDebug |
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31 // 2 = Log to file (RFileLogger) |
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32 // -------------------------------------------------------------------------- |
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33 // |
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34 |
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35 #ifdef __WINS__ |
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36 #ifdef _DEBUG |
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37 #define TRACER_LOG_METHOD 1 // for WINS UDEB |
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38 #else |
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39 #define TRACER_LOG_METHOD 0 // for WINS UREL |
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40 #endif |
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41 #else |
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42 #ifdef _DEBUG |
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43 #define TRACER_LOG_METHOD 2 // for Armv5 UDEB |
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44 #else |
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45 #define TRACER_LOG_METHOD 0 // for Armv5 UREL |
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46 #endif |
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47 #endif |
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48 |
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49 #endif |
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50 |
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51 // -------------------------------------------------------------------------- |
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52 // Whether to use TRAP_INSTRUMENTATIONs to |
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53 // log trapped leaves |
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54 // -------------------------------------------------------------------------- |
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55 // |
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56 #define TRACE_TRAPS |
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57 //============================================================================ |
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58 |
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59 // Logging off, define empty macros and skip all the rest |
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60 #if TRACER_LOG_METHOD == 0 |
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61 |
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62 #define TRACER(func) |
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63 #define TRACER_AUTO |
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64 #define TRACER_RET(func,format) |
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65 #define TRACER_AUTO_RET(format) |
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66 #define TRACER_LEAVE(func) |
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67 #define TRACER_AUTO_LEAVE |
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68 #define TRACE(args...) |
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69 #define TRACE8(args...) |
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70 #define TRACER_TO16(a,b) |
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71 #define TRACER_TO8(a,b) |
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72 #define TRACER_CLOSELOG |
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73 |
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74 #else // Logging on |
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75 |
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76 // -------------------------------------------------------------------------- |
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77 // Change these to modify line syntax |
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78 // -------------------------------------------------------------------------- |
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79 // |
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80 _LIT( KLogBase, "UiServiceTab %S(%d): %S"); |
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81 _LIT( KLogEnter, "UiServiceTab %S: ENTER" ); |
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82 _LIT( KLogExit, "UiServiceTab %S: EXIT" ); |
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83 _LIT( KLogLeave, "UiServiceTab %S: LEAVE!" ); |
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84 _LIT( KLogTrappedLeave, "UiServiceTab %S(%d): TRAPPED LEAVE, code %d!" ); |
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85 _LIT( KLogExitRet, "UiServiceTab %S: EXIT, Returning " ); |
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86 _LIT( KLogDir, "UiServiceTab" ); |
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87 _LIT( KLogFile, "UiServiceTab.log" ); |
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88 |
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89 #define TRACER_PARAMS_LENGTH 200 |
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90 |
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91 // -------------------------------------------------------------------------- |
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92 // Macro to print only function leaves (not entries or exits). |
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93 // Example: TRACER_LEAVE( "CMyClass::MyFunction" ); |
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94 // -------------------------------------------------------------------------- |
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95 // |
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96 #define TRACER_LEAVE(func) TTracer function_tracer( _S(func), _S(""), EFalse ) |
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97 |
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98 // -------------------------------------------------------------------------- |
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99 // Same as above, except that function name is generated automatically |
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100 // Example: TRACER_AUTO_LEAVE; |
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101 // -------------------------------------------------------------------------- |
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102 // |
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103 #define TRACER_AUTO_LEAVE TTracer \ |
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104 function_tracer( ((const TText8*)__PRETTY_FUNCTION__), _S(""), EFalse ) |
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105 |
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106 // -------------------------------------------------------------------------- |
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107 // Macro to print function entry, exit and leave. |
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108 // Example: TRACER( "CMyClass::MyFunction" ); |
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109 // -------------------------------------------------------------------------- |
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110 // |
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111 #define TRACER(func) TTracer function_tracer( _S(func), _S(""), ETrue ) |
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112 |
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113 // -------------------------------------------------------------------------- |
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114 // Same as above, except that function name is generated automatically |
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115 // Example: TRACER_AUTO; |
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116 // -------------------------------------------------------------------------- |
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117 // |
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118 #define TRACER_AUTO \ |
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119 TTracer function_tracer \ |
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120 ( ((const TText8*)__PRETTY_FUNCTION__), _S(""), ETrue ) |
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121 |
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122 // -------------------------------------------------------------------------- |
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123 // Macro to print function return value in addition to entry, exit |
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124 // and leave conditions. Second parameter is a formatting string used |
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125 // to print the return value Example to print an integer return value: |
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126 // TRACER_RET("CMyclass::MyFunction", "%d"); |
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127 // -------------------------------------------------------------------------- |
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128 // |
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129 #define TRACER_RET(func,format) \ |
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130 TTracer function_tracer( _S(func), _S(format), ETrue ) |
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131 |
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132 // -------------------------------------------------------------------------- |
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133 // Same as above, except that function name is generated automatically |
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134 // Example: TRACER_AUTO_RET( "%d" ); |
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135 // -------------------------------------------------------------------------- |
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136 // |
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137 #define TRACER_AUTO_RET(format) \ |
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138 TTracer function_tracer \ |
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139 ( ((const TText8*)__PRETTY_FUNCTION__), _S(format), ETrue ) |
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140 |
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141 // -------------------------------------------------------------------------- |
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142 // Macro to print custom msg with any number of parameters |
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143 // Either TRACER, TRACER_RET or TRACER_LEAVE |
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144 // must be called before in same scope |
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145 // It's is assumed that descriptor (pointer) parameters are 16-bit |
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146 // NOTE: It is also assumed that parameter values |
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147 // add no more than TRACE_PARAMS_LENGTH to the traced string |
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148 // -------------------------------------------------------------------------- |
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149 // |
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150 #define TRACE( args... ) function_tracer.trace( __LINE__, ## args ) |
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151 |
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152 // -------------------------------------------------------------------------- |
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153 // Macro to print custom msg with any number of parameters |
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154 // Either TRACER, TRACER_RET or TRACER_LEAVE |
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155 // must be called before in same scope |
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156 // It's is assumed that descriptor (pointer) parameters are 8-bit |
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157 // NOTE: It is also assumed that parameter values |
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158 // add no more than TRACE_PARAMS_LENGTH to the traced string |
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159 // -------------------------------------------------------------------------- |
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160 // |
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161 #define TRACE8( args... ) function_tracer.trace8(__LINE__, ## args ) |
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162 |
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163 // -------------------------------------------------------------------------- |
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164 // Just to quickly convert descriptors if needed |
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165 // -------------------------------------------------------------------------- |
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166 // |
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167 #define DESCRIPTOR_LENGTH 100 |
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168 #define TRACER_TO16( desc8, desc16 ) \ |
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169 TBuf<DESCRIPTOR_LENGTH> desc16;desc16.Copy(desc8) |
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170 #define TRACER_TO8( desc16, desc8 ) \ |
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171 TBuf8<DESCRIPTOR_LENGTH> desc8;desc8.Copy(desc16) |
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172 |
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173 #ifdef TRACE_TRAPS |
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174 #undef TRAP_INSTRUMENTATION_LEAVE |
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175 #define TRAP_INSTRUMENTATION_LEAVE(aResult) \ |
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176 TTracer::static_trace( ((const TText8*)__PRETTY_FUNCTION__), \ |
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177 __LINE__, aResult ) |
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178 #endif |
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179 |
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180 |
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181 #if TRACER_LOG_METHOD == 1 // Print to RDebug |
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182 |
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183 #include <e32debug.h> |
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184 |
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185 #define TRACER_PRINT(a) RDebug::Print(a,&iFunc); |
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186 #define TRACER_PRINT_BASE(a,b,c) RDebug::Print(a,&iFunc, b, c); |
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187 #define TRACER_PRINT_RET(a,b) RDebug::Print(a,&iFunc,b); |
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188 #define TRACER_PRINT_STATIC(a, b, c,d ) \ |
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189 RDebug::Print(a, b, c, d); |
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190 |
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191 #elif TRACER_LOG_METHOD == 2 // Print to file |
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192 |
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193 // needs flogger.lib as DEBUGLIBRARY |
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194 |
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195 // -------------------------------------------------------------------------- |
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196 // Log directory under C:\logs |
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197 // -------------------------------------------------------------------------- |
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198 // |
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199 //_LIT( KLogDir, "MeCo" ); |
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200 |
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201 // -------------------------------------------------------------------------- |
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202 // Log filename in log directory |
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203 // -------------------------------------------------------------------------- |
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204 // |
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205 //_LIT( KLogFile, "MeCo.log" ); |
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206 #define TRACER_PRINT(a) RFileLogger::WriteFormat(KLogDir, \ |
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207 KLogFile,EFileLoggingModeAppend,a,&iFunc); |
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208 #define TRACER_PRINT_BASE(a,b,c) RFileLogger::WriteFormat(KLogDir, \ |
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209 KLogFile,EFileLoggingModeAppend,a,&iFunc,b,c); |
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210 #define TRACER_PRINT_RET(a,b) RFileLogger::WriteFormat(KLogDir, \ |
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211 KLogFile,EFileLoggingModeAppend,a,&iFunc,b); |
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212 #define TRACER_PRINT_STATIC(a,b,c,d) \ |
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213 RFileLogger::WriteFormat(KLogDir, \ |
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214 KLogFile,EFileLoggingModeAppend,a,b,c,d); |
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215 |
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216 #endif |
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217 |
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218 |
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219 /** |
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220 * Simple tracer class that logs function enter, exit or leave |
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221 */ |
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222 class TTracer : public CBase |
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223 { |
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224 private: |
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225 |
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226 /** |
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227 * Simple helper method to just return if NULL |
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228 */ |
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229 template<class T> static void ReturnIfNull(T* aNy) |
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230 { if ( !aNy ) return; } |
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231 |
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232 public: |
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233 /** |
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234 * inline constructor to write log of entering a function |
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235 */ |
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236 TTracer( const TText* aFunc, |
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237 const TText* aRetFormat, |
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238 TBool aPrintEnter) : |
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239 iFunc( aFunc), |
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240 iRetFormat( aRetFormat ), |
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241 iPrintEnterAndExit( aPrintEnter) |
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242 { |
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243 iFuncBuf = NULL; |
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244 //iLogger.Connect(); |
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245 //iLogger.CreateLog(KLogDir, KLogFile, mode); |
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246 if ( iPrintEnterAndExit ) |
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247 { |
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248 TRACER_PRINT( KLogEnter ); |
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249 } |
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250 } |
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251 |
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252 /** |
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253 * inline constructor to write log of entering a function (8-bit) |
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254 */ |
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255 TTracer( const TText8* aFunc, |
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256 const TText* aRetFormat, |
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257 TBool aPrintEnter) : |
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258 iRetFormat( aRetFormat ), |
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259 iPrintEnterAndExit( aPrintEnter ) |
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260 { |
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261 TInt len = User::StringLength ((const unsigned char*)aFunc ); |
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262 HBufC8* temp = HBufC8::New( len ); |
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263 ReturnIfNull( temp ); |
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264 *temp = (const TUint8*)aFunc; |
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265 iFuncBuf = HBufC::NewL( len ); |
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266 //iLogger.Connect(); |
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267 //iLogger.CreateLog(KLogDir, KLogFile, EFileLoggingModeAppend); |
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268 if ( iFuncBuf ) |
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269 { |
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270 iFuncBuf->Des().Copy( *temp ); |
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271 iFunc.Set( *iFuncBuf ); |
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272 if ( iPrintEnterAndExit ) |
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273 { |
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274 TRACER_PRINT( KLogEnter ); |
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275 } |
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276 } |
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277 delete temp; |
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278 } |
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279 |
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280 |
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281 /** |
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282 * inline destructor to write log of exiting a function |
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283 * normally or with a leave |
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284 */ |
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285 ~TTracer( ) |
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286 { |
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287 if ( std::uncaught_exception ( ) ) // Leave is an exception |
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288 { |
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289 // The function exited with a leave |
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290 TRACER_PRINT( KLogLeave ); |
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291 } |
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292 else |
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293 { |
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294 // The function exited normally |
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295 if ( iPrintEnterAndExit ) |
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296 { |
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297 if ( iRetFormat.Length ( )== 0 ) |
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298 { |
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299 TRACER_PRINT( KLogExit ); |
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300 } |
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301 else |
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302 { |
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303 // Log the return value |
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304 #ifdef __WINS__ |
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305 TInt32 retVal = 0; |
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306 |
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307 // The assembly bit. This needs to be reimplemented |
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308 // for every target. |
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309 _asm( mov retVal, ebx ); |
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310 |
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311 TBuf<100> format( KLogExitRet ); |
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312 format.Append( iRetFormat ); |
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313 TRACER_PRINT_RET( format, retVal ); |
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314 #else |
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315 // ARM assembler to get return value |
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316 // could be implemented here.. |
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317 TRACER_PRINT( KLogExit ); |
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318 #endif |
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319 } |
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320 } |
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321 } |
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322 //iLogger.Close(); |
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323 delete iFuncBuf; |
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324 } |
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325 |
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326 public: |
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327 |
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328 /** |
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329 * Trace method that assumes 16-bit descriptor parameters |
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330 */ |
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331 void trace( TInt aLine, const char* aMsg, ... ) |
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332 { |
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333 ReturnIfNull( iFunc.Ptr() ); |
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334 TInt len = User::StringLength ((const unsigned char*)aMsg ); |
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335 TPtrC8 msg( (const unsigned char*)aMsg, len ); |
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336 HBufC* format = HBufC::New( len ); |
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337 ReturnIfNull( format ); |
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338 format->Des().Copy( msg ); |
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339 HBufC* result = HBufC::New( len + TRACER_PARAMS_LENGTH ); |
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340 if ( result ) |
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341 { |
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342 VA_LIST list; |
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343 VA_START( list, aMsg ); |
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344 result->Des().FormatList( *format, list ); |
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345 VA_END(list); |
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346 TRACER_PRINT_BASE(KLogBase, aLine, result ); |
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347 } |
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348 delete format; |
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349 delete result; |
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350 } |
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351 |
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352 /** |
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353 * Trace method that assumes 8-bit descriptor parameters |
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354 */ |
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355 void trace8(TInt aLine, const char* aMsg, ... ) |
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356 { |
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357 ReturnIfNull( iFunc.Ptr() ); |
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358 TInt len = User::StringLength ((const unsigned char*)aMsg ); |
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359 TPtrC8 msg( (const unsigned char*)aMsg, len ); |
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360 HBufC8* result8 = HBufC8::New( len + TRACER_PARAMS_LENGTH ); |
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361 ReturnIfNull( result8 ); |
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362 VA_LIST list; |
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363 VA_START( list, aMsg ); |
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364 result8->Des().FormatList( msg, list ); |
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365 VA_END(list); |
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366 HBufC* result16 = HBufC::New( result8->Length() ); |
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367 if ( result16 ) |
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368 { |
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369 result16->Des().Copy( *result8 ); |
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370 TRACER_PRINT_BASE( KLogBase, aLine, result16 ); |
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371 } |
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372 delete result8; |
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373 delete result16; |
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374 } |
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375 |
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376 static void static_trace( const TText8* aFunc, |
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377 TInt aLine, |
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378 TInt aResult ) |
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379 { |
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380 TInt len = User::StringLength ((const unsigned char*)aFunc ); |
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381 HBufC8* temp = HBufC8::New( len ); |
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382 ReturnIfNull( temp ); |
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383 *temp = (const TUint8*)aFunc; |
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384 HBufC* funcBuf = HBufC::NewL( len ); |
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385 if ( funcBuf ) |
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386 { |
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387 funcBuf->Des().Copy( *temp ); |
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388 TRACER_PRINT_STATIC( |
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389 KLogTrappedLeave, funcBuf, aLine, aResult ); |
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390 } |
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391 delete temp; |
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392 delete funcBuf; |
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393 } |
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394 public: |
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395 |
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396 /** |
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397 * Pointer descriptor to function signature that is to be logged. |
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398 */ |
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399 TPtrC iFunc; |
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400 //RFileLogger iLogger; |
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401 |
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402 private: |
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403 |
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404 |
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405 /** |
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406 * Formatting string used to print the function return value |
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407 */ |
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408 TPtrC iRetFormat; |
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409 |
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410 /** |
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411 * If true, method enters and exits are printed |
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412 */ |
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413 TBool iPrintEnterAndExit; |
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414 |
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415 /** |
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416 * Buffer to store function name when needed |
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417 */ |
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418 HBufC* iFuncBuf; |
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419 }; |
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420 |
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421 #endif // TRACER_LOG_METHOD != 0 && CHAT_ENABLE_DEBUG_PRINT |
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422 |
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423 #endif // UISERVICETABTRACER_H |
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424 |
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425 // End of file |
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