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1 /* |
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2 * Copyright (c) 2009 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 the License "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: |
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15 * |
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16 */ |
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17 // D_FTRACE.CPP |
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18 // |
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19 // |
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20 // |
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21 #include "plat_priv.h" |
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22 #include <kernel/kernel.h> |
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23 |
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24 #include "f32trace.h" |
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25 |
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26 DMutex* TheTraceMutex = NULL; |
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27 _LIT(KLitTraceMutexName, "FTRACE_MUTEX"); |
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28 |
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29 const TInt KMajorVersionNumber=1; |
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30 const TInt KMinorVersionNumber=0; |
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31 const TInt KBuildVersionNumber=0; |
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32 |
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33 |
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34 class DLddFactoryFTrace : public DLogicalDevice |
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35 { |
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36 public: |
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37 DLddFactoryFTrace(); |
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38 virtual ~DLddFactoryFTrace(); |
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39 virtual TInt Install(); |
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40 virtual void GetCaps(TDes8 &aDes) const; |
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41 virtual TInt Create(DLogicalChannelBase*& aChannel); //overriding pure virtual |
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42 }; |
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43 |
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44 class DLddFTrace : public DLogicalChannelBase |
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45 { |
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46 public: |
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47 DLddFTrace(); |
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48 ~DLddFTrace(); |
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49 protected: |
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50 virtual TInt DoCreate(TInt aUnit, const TDesC8* anInfo, const TVersion& aVer); |
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51 |
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52 virtual TInt Request(TInt aReqNo, TAny* a1, TAny* a2); |
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53 |
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54 private: |
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55 void DoCancel(TInt aReqNo); |
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56 TInt DoRequest(TInt aReqNo, TRequestStatus* aStatus, TAny* a1, TAny* a2); |
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57 TInt DoControl(TInt aFunction, TAny* a1, TAny* a2); |
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58 |
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59 private: |
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60 }; |
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61 |
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62 DECLARE_STANDARD_LDD() |
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63 { |
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64 TInt r = Kern::MutexCreate(TheTraceMutex, KLitTraceMutexName, KMutexOrdNone); |
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65 if (r != KErrNone) |
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66 return NULL; |
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67 |
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68 return new DLddFactoryFTrace; |
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69 } |
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70 |
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71 DLddFactoryFTrace::DLddFactoryFTrace() |
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72 { |
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73 |
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74 iParseMask=KDeviceAllowUnit; // Pass stack number as unit |
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75 iUnitsMask=0xffffffff; |
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76 iVersion=TVersion(KMajorVersionNumber,KMinorVersionNumber,KBuildVersionNumber); |
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77 } |
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78 |
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79 TInt DLddFactoryFTrace::Create(DLogicalChannelBase*& aChannel) |
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80 { |
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81 aChannel=new DLddFTrace; |
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82 return aChannel ? KErrNone : KErrNoMemory; |
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83 } |
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84 |
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85 TInt DLddFactoryFTrace::Install() |
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86 { |
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87 TPtrC name=_L("FTrace"); |
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88 return(SetName(&name)); |
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89 } |
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90 |
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91 void DLddFactoryFTrace::GetCaps(TDes8& /*aDes*/) const |
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92 { |
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93 } |
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94 |
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95 DLddFactoryFTrace::~DLddFactoryFTrace() |
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96 { |
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97 } |
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98 |
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99 DLddFTrace::DLddFTrace() |
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100 { |
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101 } |
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102 |
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103 DLddFTrace::~DLddFTrace() |
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104 { |
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105 } |
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106 |
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107 TInt DLddFTrace::DoCreate(TInt /*aUnit*/, const TDesC8* /*aInfo*/, const TVersion& aVer) |
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108 { |
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109 |
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110 if (!Kern::QueryVersionSupported(TVersion(KMajorVersionNumber,KMinorVersionNumber,KBuildVersionNumber),aVer)) |
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111 return(KErrNotSupported); |
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112 |
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113 return(KErrNone); |
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114 } |
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115 |
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116 void DLddFTrace::DoCancel(TInt /*aReqNo*/) |
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117 { |
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118 } |
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119 |
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120 TInt DLddFTrace::Request(TInt aReqNo, TAny* a1, TAny* a2) |
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121 { |
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122 NKern::ThreadEnterCS(); |
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123 Kern::MutexWait(*TheTraceMutex); |
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124 TInt r = DoControl(aReqNo, a1, a2); |
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125 Kern::MutexSignal(*TheTraceMutex); |
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126 NKern::ThreadLeaveCS(); |
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127 |
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128 return r; |
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129 } |
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130 |
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131 |
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132 const TUint KTraceBufferSize = 4096; |
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133 TUint8 gTraceBuffer[KTraceBufferSize]; |
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134 |
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135 |
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136 #define MIN(a,b) ((a) < (b) ? (a) : (b)) |
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137 |
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138 TInt DLddFTrace::DoControl(TInt aFunction, TAny* a1, TAny* a2) |
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139 // |
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140 // Mostly requests (but some kernel server async ones) |
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141 // |
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142 { |
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143 TInt r=KErrNotSupported; |
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144 switch (aFunction) |
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145 { |
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146 case RFTrace::ETraceMultiple: |
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147 { |
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148 typedef struct { |
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149 TClassification iCategory; |
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150 TUint8 iPadding1[sizeof(TUint) - sizeof(TClassification)]; |
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151 |
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152 TFormatId iFormatId; |
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153 TUint8 iPadding2[sizeof(TUint) - sizeof(TFormatId)]; |
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154 |
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155 TUint32 iUid; |
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156 TInt iDescriptorCount; |
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157 } TraceArgs; |
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158 |
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159 TraceArgs args={0}; |
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160 |
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161 XTRAP(r, XT_DEFAULT, kumemget32(&args, a1, sizeof(args))); |
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162 if (r != KErrNone) |
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163 return r; |
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164 |
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165 // current descriptor - MUST be either a TPtr8 or a TBuf8<4> |
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166 TUint32 desc[2] = {0, 0}; |
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167 TUint32& desLength = desc[0]; |
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168 |
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169 TUint offset = 0; |
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170 |
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171 *((TUint*) (gTraceBuffer+offset)) = args.iFormatId; |
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172 offset+= sizeof(TUint); |
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173 |
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174 TDesC8* des = (TDesC8*) ((TUint8*) a2); |
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175 const TInt desSize = sizeof(TPtrC8); |
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176 for (TInt n=0; n< args.iDescriptorCount; n++, des = (TDesC8*) (((TUint8*) des) + desSize) ) |
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177 { |
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178 |
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179 XTRAP(r, XT_DEFAULT, kumemget32(desc, des, sizeof(desc))); |
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180 TUint32 desType = desLength >> KShiftDesType; |
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181 desLength &= (TUint) (KMaskDesLength); |
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182 if (desType == EPtrC) |
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183 { |
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184 *((TUint*) (gTraceBuffer+offset)) = desLength; |
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185 desLength = (desLength+3)&~3; |
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186 offset+= sizeof(TUint); |
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187 } |
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188 else if (desType == EBufC) |
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189 { |
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190 *((TUint*) (gTraceBuffer+offset)) = desc[1]; |
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191 offset+= sizeof(TUint); |
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192 if (desLength > 4) |
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193 return KErrArgument; |
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194 desLength = 0; |
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195 continue; |
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196 } |
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197 else |
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198 return KErrArgument; |
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199 |
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200 TUint len = MIN(KTraceBufferSize - offset, desLength); |
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201 XTRAP(r, XT_DEFAULT, kumemget(gTraceBuffer+offset, (const TUint8*) desc[1], len)); |
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202 offset+= len; |
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203 |
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204 } |
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205 |
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206 BTrace::OutFilteredBig |
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207 (BTRACE_HEADER_C(8,args.iCategory, 0), args.iUid, gTraceBuffer, offset); |
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208 |
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209 r=KErrNone; |
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210 break; |
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211 } |
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212 } |
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213 return(r); |
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214 } |
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215 |