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 "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 |
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18 #include "MemSpyDriverLogChanHeapData.h" |
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19 |
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20 // System includes |
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21 #include <u32hal.h> |
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22 #include <e32rom.h> |
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23 #include <memspy/driver/memspydriverobjectsshared.h> |
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24 #include <memspy/driver/memspydriverconstants.h> |
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25 |
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26 // Shared includes |
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27 #include "MemSpyDriverOpCodes.h" |
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28 #include "MemSpyDriverObjectsInternal.h" |
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29 |
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30 // User includes |
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31 #include "MemSpyDriverHeap.h" |
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32 #include "MemSpyDriverUtils.h" |
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33 #include "MemSpyDriverDevice.h" |
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34 #include "MemSpyDriverOSAdaption.h" |
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35 #include "MemSpyDriverHeapWalker.h" |
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36 #include "MemSpyDriverUserEventMonitor.h" |
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37 #include "MemSpyDriverSuspensionManager.h" |
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38 |
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39 |
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40 |
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41 |
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42 DMemSpyDriverLogChanHeapData::DMemSpyDriverLogChanHeapData( DMemSpyDriverDevice& aDevice, DThread& aThread ) |
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43 : DMemSpyDriverLogChanHeapBase( aDevice, aThread ), iKernelHeap( aDevice.OSAdaption() ) |
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44 { |
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45 TRACE( Kern::Printf("DMemSpyDriverLogChanHeapData::DMemSpyDriverLogChanHeapData() - this: 0x%08x", this )); |
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46 } |
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47 |
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48 |
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49 DMemSpyDriverLogChanHeapData::~DMemSpyDriverLogChanHeapData() |
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50 { |
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51 TRACE( Kern::Printf("DMemSpyDriverLogChanHeapData::~DMemSpyDriverLogChanHeapData() - START - this: 0x%08x", this )); |
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52 |
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53 TRACE( Kern::Printf("DMemSpyDriverLogChanHeapData::~DMemSpyDriverLogChanHeapData() - END - this: 0x%08x", this )); |
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54 } |
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55 |
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56 |
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57 |
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58 |
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59 |
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60 |
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61 |
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62 TInt DMemSpyDriverLogChanHeapData::Request( TInt aFunction, TAny* a1, TAny* a2 ) |
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63 { |
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64 TInt r = DMemSpyDriverLogChanHeapBase::Request( aFunction, a1, a2 ); |
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65 if ( r == KErrNone ) |
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66 { |
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67 switch( aFunction ) |
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68 { |
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69 case EMemSpyDriverOpCodeHeapDataGetUser: |
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70 r = GetHeapDataUser( (TMemSpyDriverInternalHeapDataParams*) a1 ); |
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71 break; |
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72 case EMemSpyDriverOpCodeHeapDataGetKernelInit: |
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73 r = GetHeapDataKernelInit( (TMemSpyHeapInfo*) a1, (TDes8*) a2 ); |
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74 break; |
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75 case EMemSpyDriverOpCodeHeapDataGetKernelFetch: |
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76 r = GetHeapDataKernelFetch( (TDes8*) a1 ); |
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77 break; |
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78 |
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79 default: |
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80 r = KErrNotSupported; |
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81 break; |
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82 } |
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83 } |
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84 // |
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85 return r; |
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86 } |
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87 |
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88 |
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89 TBool DMemSpyDriverLogChanHeapData::IsHandler( TInt aFunction ) const |
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90 { |
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91 return ( aFunction > EMemSpyDriverOpCodeHeapDataBase && aFunction < EMemSpyDriverOpCodeHeapDataEnd ); |
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92 } |
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93 |
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94 |
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95 |
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96 |
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97 |
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98 |
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99 |
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100 |
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101 |
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102 |
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103 |
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104 |
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105 |
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106 |
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107 TInt DMemSpyDriverLogChanHeapData::GetHeapDataUser( TMemSpyDriverInternalHeapDataParams* aParams ) |
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108 { |
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109 TRACE( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataUser() - START")); |
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110 |
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111 TMemSpyDriverInternalHeapDataParams params; |
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112 TInt r = Kern::ThreadRawRead( &ClientThread(), aParams, ¶ms, sizeof(TMemSpyDriverInternalHeapDataParams) ); |
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113 // |
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114 if ( r == KErrNone ) |
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115 { |
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116 TRACE( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataUser - thread id: %d, remaining: %8d, vtable: 0x%08x", params.iTid, params.iRemaining, params.iRHeapVTable)); |
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117 |
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118 // Work out if we need to read the user or kernel heap data. |
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119 // |
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120 // NB: The two 'get heap data' functions return either an error ( < KErrNone ) or then |
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121 // return the length of the descriptor data that was written to the client's address |
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122 // space. |
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123 // |
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124 r = GetHeapDataUser( params ); |
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125 |
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126 // Write back to user space if everything went okay. Remember that the |
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127 // return value above will be the length of data that was written to the |
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128 // client if there was no error. |
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129 if ( r >= KErrNone ) |
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130 { |
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131 const TInt clientDescriptorLength = r; |
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132 |
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133 // Make sure we update client's remaining data |
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134 r = Kern::ThreadRawWrite( &ClientThread(), aParams, ¶ms, sizeof(TMemSpyDriverInternalHeapDataParams) ); |
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135 |
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136 // ... and if that went okay, then we return the length of the descriptor data |
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137 // back to the client. |
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138 if ( r == KErrNone ) |
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139 { |
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140 r = clientDescriptorLength; |
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141 } |
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142 } |
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143 } |
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144 else |
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145 { |
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146 TRACE( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataUser - params read error: %d", r)); |
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147 } |
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148 |
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149 // Done |
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150 TRACE( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataUser() - END - ret: %d", r)); |
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151 return r; |
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152 } |
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153 |
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154 |
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155 TInt DMemSpyDriverLogChanHeapData::GetHeapDataKernelInit( TMemSpyHeapInfo* aInfo, TDes8* aFreeCells ) |
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156 { |
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157 // First phase is to |
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158 // |
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159 // a) Open kernel heap |
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160 // b) Make a copy of the heap data |
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161 // c) Walk copy in order to extract statistics (meta data, i.e. TMemSpyHeapInfo) |
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162 // |
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163 // The driver leaves kernel context with the copy of the kernel heap still associated with MemSpy's process. |
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164 // The second driver call will copy the chunk data to user side and release the kernel side chunk. |
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165 //const TBool isInit = iKernelHeap.ChunkIsInitialised(); |
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166 //TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataKernelInit() - START - isInit: %d", isInit )); |
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167 //__ASSERT_ALWAYS( !isInit, MemSpyDriverUtils::PanicThread( ClientThread(), EPanicKernelHeapDataInitError ) ); |
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168 |
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169 iKernelHeap.Reset(); |
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170 NKern::ThreadEnterCS(); |
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171 |
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172 TFullName heapChunkName; |
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173 TInt r = OpenKernelHeap( iKernelHeap, &heapChunkName ); |
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174 TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataKernelInit() - open err: %d", r)); |
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175 |
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176 if ( r == KErrNone ) |
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177 { |
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178 r = GetHeapInfoKernel( iKernelHeap, aInfo, aFreeCells ); |
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179 TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapInfo::GetHeapDataKernelInit() - base class get heap info: %d", r) ); |
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180 |
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181 // If everything was okay, we can now return back to user-side, indicating the amount of heap data |
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182 // that they must prepare to read (in the next operation). |
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183 if ( r == KErrNone ) |
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184 { |
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185 // Indicate how big a buffer the user-side must prepare. |
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186 r = OSAdaption().DChunk().GetSize( iKernelHeap.Chunk() ); |
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187 TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapInfo::GetHeapDataKernelInit() - user side buffer needs to be: %d", r) ); |
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188 } |
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189 else |
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190 { |
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191 // Error scenario - must close heap |
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192 iKernelHeap.Close(); |
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193 } |
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194 } |
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195 |
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196 NKern::ThreadLeaveCS(); |
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197 |
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198 TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataKernelInit() - END - ret: %d", r)); |
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199 return r; |
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200 } |
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201 |
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202 |
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203 TInt DMemSpyDriverLogChanHeapData::GetHeapDataKernelFetch( TDes8* aSink ) |
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204 { |
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205 //TOMSCI TODO this function is fundamentally flawed |
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206 return KErrNotSupported; |
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207 /* |
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208 TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataKernelFetch() - START")); |
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209 |
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210 NKern::ThreadEnterCS(); |
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211 |
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212 // We should already have an initialised copy of the kernel heap |
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213 const TBool isInit = iKernelHeap.Helper() != NULL; |
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214 TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataKernelFetch() - isInit: %d", isInit )); |
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215 __ASSERT_ALWAYS( isInit, MemSpyDriverUtils::PanicThread( ClientThread(), EPanicKernelHeapDataFetchError ) ); |
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216 |
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217 // Get user side (MemSpy) descriptor length info |
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218 TInt destLen; |
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219 TInt destMax; |
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220 TUint8* destPtr = NULL; |
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221 TInt r = Kern::ThreadGetDesInfo( &ClientThread(), aSink, destLen, destMax, destPtr, ETrue ); |
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222 TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataKernelFetch - user side descriptor: 0x%08x (0x%08x), len: %8d, maxLen: %8d, r: %d", aSink, destPtr, destLen, destMax, r )); |
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223 |
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224 if ( r == KErrNone ) |
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225 { |
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226 // Calculate start of real heap data (skipping over embedded RHeap object) |
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227 const TUint8* startOfHeapOffset = iKernelHeap.Base(); |
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228 TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataKernelFetch - startOfHeapOffset: 0x%08x", startOfHeapOffset)); |
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229 const TUint heapSize = iKernelHeap.Size(); |
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230 TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataKernelFetch - heapSize: %8d", heapSize)); |
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231 |
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232 if ( destMax >= heapSize ) |
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233 { |
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234 } |
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235 else |
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236 { |
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237 // Not enough space |
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238 r = KErrOverflow; |
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239 TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataKernelFetch - not enough space in client descriptor" )); |
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240 } |
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241 |
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242 // The remaining number of bytes should allow us to calculate the position |
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243 // to read from. |
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244 const TInt amountToRead = Min( heapSize, destMax ); |
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245 const TAny* readAddress = startOfHeapOffset; |
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246 TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataKernelFetch - amountToRead: %d", amountToRead)); |
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247 TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataKernelFetch - readAddress: 0x%08x", readAddress)); |
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248 const TPtrC8 pKernelHeapData( (const TUint8*) readAddress, amountToRead ); |
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249 |
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250 // Copy kernel heap data to MemSpy |
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251 TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataKernelFetch - about to do write to user-space...")); |
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252 r = Kern::ThreadDesWrite( &ClientThread(), aSink, pKernelHeapData, 0, KChunkShiftBy0 | KTruncateToMaxLength, &ClientThread() ); |
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253 TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataKernelFetch - write result: %d", r)); |
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254 } |
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255 |
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256 // Free heap resource |
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257 iKernelHeap.DisassociateWithKernelChunk(); |
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258 |
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259 NKern::ThreadLeaveCS(); |
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260 |
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261 TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataKernelFetch() - END - ret: %d", r)); |
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262 return r; |
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263 */ |
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264 } |
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265 |
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266 |
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267 |
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268 |
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269 |
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270 |
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271 |
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272 |
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273 |
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274 |
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275 |
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276 |
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277 |
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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 const TInt KPageSize = 4096; |
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283 |
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284 TInt DMemSpyDriverLogChanHeapData::GetHeapDataUser( TMemSpyDriverInternalHeapDataParams& aParams ) |
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285 { |
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286 TRACE( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataUser() - START") ); |
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287 |
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288 TInt r = OpenTempObject( aParams.iTid, EThread ); |
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289 if ( r != KErrNone ) |
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290 { |
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291 Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataUser() - END - thread not found"); |
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292 return r; |
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293 } |
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294 else |
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295 { |
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296 const DMemSpyDriverLogChanHeapBase::TDrmMatchType drmMatchType = IsDrmThread( TempObjectAsThread() ); |
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297 |
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298 if ( drmMatchType != DMemSpyDriverLogChanHeapBase::EMatchTypeNone ) |
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299 { |
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300 // Check whether it's a DRM thread... |
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301 DThread* thread = (DThread*) TempObject(); |
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302 Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataUser() - END - Not allowing dump of DRM heap - matchType: %d, thread: %O", drmMatchType, thread ); |
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303 CloseTempObject(); |
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304 return KErrAccessDenied; |
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305 } |
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306 } |
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307 |
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308 // Check that the process' thread's are suspended |
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309 DThread* thread = (DThread*) TempObject(); |
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310 if ( SuspensionManager().IsSuspended( *thread ) ) |
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311 { |
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312 // Open the heap |
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313 TRACE( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataUser - thread: %O", thread) ); |
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314 RMemSpyDriverRHeapUser heap( OSAdaption() ); |
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315 r = heap.OpenUserHeap(*thread, aParams.iDebugAllocator); |
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316 TRACE( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataUser - opening heap returned: %d", r) ); |
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317 if (r == KErrNone) |
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318 { |
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319 if ( aParams.iChecksum != 0 ) |
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320 { |
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321 TRACE( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataUser - checksum validation requested - expecting: 0x%08x", aParams.iChecksum ) ); |
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322 RMemSpyDriverHeapWalker heapWalker(heap); |
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323 |
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324 TRACE( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataUser - starting traversal..." )); |
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325 #if ( defined( TRACE_TYPE_USERHEAP ) && defined( TRACE_TYPE_HEAPWALK ) ) |
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326 heapWalker.SetPrintDebug(); |
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327 #endif |
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328 r = heapWalker.Traverse(); |
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329 const TUint32 calculatedChecksum = heapWalker.Stats().iFreeCellCRC; |
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330 TRACE( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataUser - finished traversal - err: %d, checksum: 0x%08x", r, calculatedChecksum )); |
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331 |
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332 TRACE( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataUser - comparing CALCULATED: 0x%08x vs EXPECTED: 0x%08x", calculatedChecksum, aParams.iChecksum )); |
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333 if ( calculatedChecksum != aParams.iChecksum ) |
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334 { |
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335 Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataUser - comparing CALCULATED: 0x%08x vs EXPECTED: 0x%08x for thread %O", calculatedChecksum, aParams.iChecksum, thread ); |
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336 r = KErrCorrupt; |
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337 } |
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338 } |
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339 |
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340 // Get user side (MemSpy) descriptor length info |
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341 if ( r == KErrNone ) |
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342 { |
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343 TInt destLen = 0; |
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344 TInt destMax = 0; |
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345 TUint8* destPtr = NULL; |
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346 r = Kern::ThreadGetDesInfo( &ClientThread(), aParams.iDes, destLen, destMax, destPtr, ETrue ); |
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347 TRACE( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataUser - user side descriptor: 0x%08x (0x%08x), len: %8d, maxLen: %8d, r: %d", aParams.iDes, destPtr, destLen, destMax, r )); |
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348 destMax = destMax & ~(KPageSize-1); // Round down dest max to page size |
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349 if (destMax <= 0 || (aParams.iReadAddress & (KPageSize-1))) r = KErrArgument; // If destMax is less than a page or the read address isn't a multiple of page size then we don't want to know |
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350 |
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351 if ( r == KErrNone ) |
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352 { |
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353 const TLinAddr chunkBase = (TLinAddr)OSAdaption().DChunk().GetBase(heap.Chunk()); |
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354 const TLinAddr chunkMaxAddr = chunkBase + OSAdaption().DChunk().GetMaxSize(heap.Chunk()); |
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355 TRACE( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataUser - chunkBase: 0x%08x", chunkBase) ); |
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356 |
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357 TLinAddr readAddress = aParams.iReadAddress; |
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358 if (aParams.iRemaining < 0 ) |
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359 { |
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360 // Initial case, start from the bottom |
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361 readAddress = chunkBase; |
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362 aParams.iRemaining = heap.Helper()->CommittedSize(); |
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363 } |
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364 |
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365 // The remaining number of bytes should allow us to calculate the position |
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366 // to read from. |
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367 TInt amountToRead = Min( aParams.iRemaining, destMax ); |
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368 TRACE( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataUser - amountToRead: %8d", amountToRead) ); |
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369 |
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370 // Do the read from the heap we are spying on into MemSpy's address space |
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371 // TomS: I didn't know you could do this - you live and learn |
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372 do |
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373 { |
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374 r = Kern::ThreadRawRead( thread, (const void*)readAddress, destPtr, amountToRead ); |
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375 TRACE( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataUser - read result: %d", r) ); |
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376 |
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377 if (r == KErrBadDescriptor) |
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378 { |
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379 // This is not necessarily an error - it could be we've hit an unmapped page |
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380 if (amountToRead > KPageSize) |
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381 { |
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382 // retry reading a single page instead |
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383 amountToRead = KPageSize; |
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384 } |
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385 else |
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386 { |
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387 // Try the next page |
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388 readAddress += KPageSize; |
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389 } |
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390 } |
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391 } while (r == KErrBadDescriptor && readAddress < chunkMaxAddr); |
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392 // |
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393 if (r == KErrNone) |
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394 { |
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395 // Client takes care of updating descriptor length. |
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396 r = amountToRead; |
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397 } |
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398 |
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399 // Update remaining bytes |
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400 aParams.iRemaining -= amountToRead; |
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401 aParams.iReadAddress = readAddress; |
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402 } |
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403 } |
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404 } |
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405 else |
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406 { |
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407 Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataUser - couldnt open heap for thread %O, err=%d", thread, r); |
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408 r = KErrNotSupported; |
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409 } |
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410 heap.Close(); |
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411 } |
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412 else |
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413 { |
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414 Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataUser - parent process not suspended => KErrAccessDenied - thread: %O", thread ); |
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415 r = KErrAccessDenied; |
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416 } |
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417 |
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418 CloseTempObject(); |
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419 |
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420 TRACE( Kern::Printf("DMemSpyDriverLogChanHeapData::GetHeapDataUser() - END - ret: %d", r) ); |
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421 return r; |
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422 } |
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423 |
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424 |
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425 |
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