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1 /* |
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2 * Copyright (c) 2006-2006 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: Memory Scan Client |
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15 * |
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16 */ |
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17 |
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18 |
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19 |
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20 // SYSTEM INCLUDES |
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21 #include <e32svr.h> |
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22 #include <s32mem.h> // RBufReadStream |
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23 |
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24 // USER INCLUDES |
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25 #include "memscanclient.h" |
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26 #include "memscanutils.h" // traces |
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27 |
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28 |
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29 // Standard server startup code |
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30 // |
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31 static TInt StartServer() |
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32 { |
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33 TRACES( RDebug::Print(_L("MemScanClient: Starting server...")) ); |
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34 |
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35 RProcess server; |
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36 TInt r=server.Create(KMemScanServImg,KNullDesC); |
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37 |
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38 if (r!=KErrNone) |
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39 { |
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40 TRACES( RDebug::Print(_L("MemScanClient: server start failed %d"),r) ); |
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41 return r; |
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42 } |
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43 TRequestStatus stat; |
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44 server.Rendezvous(stat); |
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45 if (stat!=KRequestPending) |
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46 server.Kill(0); // abort startup |
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47 else |
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48 server.Resume(); // logon OK - start the server |
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49 TRACES( RDebug::Print(_L("MemScanClient: Started")) ); |
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50 User::WaitForRequest(stat); // wait for start or death |
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51 // we can't use the 'exit reason' if the server panicked as this |
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52 // is the panic 'reason' and may be '0' which cannot be distinguished |
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53 // from KErrNone |
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54 r=(server.ExitType()==EExitPanic) ? KErrGeneral : stat.Int(); |
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55 server.Close(); |
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56 return r; |
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57 } |
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58 |
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59 EXPORT_C RMemScanClient::RMemScanClient() |
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60 : iScanEventPackagePointer( NULL, 0, 0 ) |
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61 { |
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62 } |
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63 |
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64 |
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65 // This is the standard retry pattern for server connection |
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66 EXPORT_C TInt RMemScanClient::Connect() |
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67 { |
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68 TVersion version(KMemScanServMajor, KMemScanServMinor, KMemScanServBuild); |
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69 TInt retry=2; |
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70 for (;;) |
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71 { |
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72 TInt r=CreateSession(KMemScanServName, version, 1); |
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73 if (r!=KErrNotFound && r!=KErrServerTerminated) |
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74 return r; |
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75 if (--retry==0) |
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76 return r; |
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77 r=StartServer(); |
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78 if (r!=KErrNone && r!=KErrAlreadyExists) |
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79 return r; |
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80 } |
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81 } |
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82 |
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83 EXPORT_C void RMemScanClient::Close() |
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84 { |
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85 RSessionBase::Close(); //basecall |
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86 } |
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87 |
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88 |
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89 // *************************************************************************** |
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90 // Client Server functions |
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91 // *************************************************************************** |
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92 |
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93 |
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94 // --------------------------------------------------------------------------- |
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95 // RMemScanClient::DataGroupsL() |
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96 // |
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97 // --------------------------------------------------------------------------- |
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98 EXPORT_C CDesCArray* RMemScanClient::DataGroupsL() const |
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99 { |
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100 // Ask server to externalize the data group array to buffer |
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101 // and to provide size of buffer |
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102 TPckgBuf<TInt> bufferSize; |
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103 User::LeaveIfError(SendReceive( EMemScanPrepareDataGroups, TIpcArgs(&bufferSize) )); |
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104 |
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105 // Create a buffer of sufficient size in order to fetch the |
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106 // buffer from the server |
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107 CBufBase* buffer = CBufFlat::NewL( bufferSize() ); //buffer granularity |
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108 CleanupStack::PushL( buffer ); |
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109 buffer->ResizeL( bufferSize() ); //buffer size |
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110 |
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111 // Now fetch the transfer buffer from the server |
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112 TPtr8 pBuffer(buffer->Ptr(0)); |
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113 User::LeaveIfError(SendReceive( EMemScanGetDataGroups, TIpcArgs(&pBuffer) )); |
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114 |
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115 // *** Start internalizing the buffer *** |
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116 |
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117 RBufReadStream stream(*buffer); |
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118 CleanupClosePushL(stream); |
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119 |
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120 // Read the number of data groups from the beginning of the stream |
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121 const TInt count = stream.ReadInt32L(); |
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122 |
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123 // Create the array for the data group names with appropriate granularity |
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124 CDesCArray* dataGroupNameArray = new (ELeave) CDesCArrayFlat(count); |
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125 CleanupStack::PushL( dataGroupNameArray ); |
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126 |
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127 |
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128 // Read each group name to array |
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129 for(TInt i=0; i<count; i++) |
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130 { |
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131 // Read number of bytes in varying length descriptor |
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132 const TInt length = stream.ReadInt32L(); |
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133 // Read datagroup name |
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134 HBufC* group = HBufC::NewLC( stream, length ); |
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135 dataGroupNameArray->AppendL( *group ); |
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136 CleanupStack::PopAndDestroy( group ); |
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137 } |
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138 |
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139 // *** Internalizing done *** |
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140 |
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141 CleanupStack::Pop( dataGroupNameArray ); |
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142 CleanupStack::PopAndDestroy( &stream ); |
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143 CleanupStack::PopAndDestroy( buffer ); |
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144 |
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145 |
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146 return dataGroupNameArray; |
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147 } |
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148 |
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149 |
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150 // --------------------------------------------------------------------------- |
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151 // RMemScanClient::ScanResultL() |
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152 // |
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153 // --------------------------------------------------------------------------- |
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154 EXPORT_C CArrayFix<TInt64>* RMemScanClient::ScanResultL() const |
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155 { |
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156 // Ask server to externalize the scan result array to buffer |
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157 // and to provide size of buffer |
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158 TPckgBuf<TInt> bufferSize; |
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159 User::LeaveIfError(SendReceive(EMemScanPrepareScanResults, TIpcArgs( &bufferSize ))); |
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160 |
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161 // Create a buffer of sufficient size in order to fetch the |
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162 // buffer from the server |
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163 CBufBase* buffer = CBufFlat::NewL( bufferSize() ); //buffer granularity |
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164 CleanupStack::PushL( buffer ); |
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165 buffer->ResizeL( bufferSize() ); //buffer size |
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166 |
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167 // Now fetch the transfer buffer from the server |
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168 TPtr8 pBuffer(buffer->Ptr(0)); |
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169 TIpcArgs args(&pBuffer); |
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170 User::LeaveIfError(SendReceive( EMemScanGetScanResults, args )); |
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171 |
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172 // *** Start internalizing the buffer *** |
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173 |
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174 RBufReadStream stream(*buffer); |
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175 CleanupClosePushL(stream); |
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176 |
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177 // Read the number of results from the beginning of the stream |
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178 const TInt count = stream.ReadInt32L(); |
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179 |
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180 // Create the result array with such granularity |
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181 // that reallocations do not happen |
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182 CArrayFix<TInt64>* resultArray = new (ELeave) CArrayFixFlat<TInt64>(count); |
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183 CleanupStack::PushL(resultArray); |
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184 |
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185 |
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186 // Read scan results for each data group and write them to result array |
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187 for(TInt i=0; i<count; i++) |
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188 { |
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189 TInt64 result; |
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190 stream >> result; |
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191 resultArray->AppendL(result); |
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192 } |
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193 |
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194 // *** Internalizing done *** |
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195 |
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196 CleanupStack::Pop( resultArray ); |
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197 CleanupStack::PopAndDestroy( &stream ); |
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198 CleanupStack::PopAndDestroy( buffer ); |
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199 |
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200 |
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201 return resultArray; |
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202 } |
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203 |
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204 // --------------------------------------------------------------------------- |
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205 // RMemScanClient::Scan() |
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206 // |
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207 // --------------------------------------------------------------------------- |
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208 EXPORT_C TInt RMemScanClient::Scan(TDriveNumber aDrive) |
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209 { |
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210 TInt err = SendReceive( EMemScanStartScan, TIpcArgs( aDrive ) ); |
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211 return err; |
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212 } |
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213 |
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214 |
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215 // --------------------------------------------------------------------------- |
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216 // RMemScanClient::RequestScanEvents() |
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217 // |
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218 // --------------------------------------------------------------------------- |
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219 EXPORT_C void RMemScanClient::RequestScanEvents( TInt& aError, TRequestStatus& aRequestStatus ) |
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220 { |
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221 iScanEventPackagePointer.Set( (TUint8*) &aError, sizeof(TInt), sizeof(TInt) ); |
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222 |
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223 TIpcArgs args( &iScanEventPackagePointer ); |
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224 SendReceive( EMemScanRequestScanEvents, args, aRequestStatus ); |
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225 } |
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226 |
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227 |
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228 // --------------------------------------------------------------------------- |
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229 // RMemScanClient::RequestScanEventsCancel() |
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230 // |
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231 // --------------------------------------------------------------------------- |
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232 EXPORT_C void RMemScanClient::RequestScanEventsCancel() |
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233 { |
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234 // There is nothing client can do if cancelling went wrong, |
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235 // so we don't return any error |
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236 SendReceive( EMemScanRequestScanEventsCancel ); |
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237 } |
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238 |
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239 |
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240 // --------------------------------------------------------------------------- |
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241 // RMemScanClient::ScanInProgress() |
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242 // |
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243 // --------------------------------------------------------------------------- |
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244 EXPORT_C TBool RMemScanClient::ScanInProgress() const |
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245 { |
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246 TBool result = EFalse; |
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247 TInt err = SendReceive(EMemScanInProgress); |
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248 if( err < 0 ) |
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249 { |
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250 result = EFalse; |
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251 } |
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252 else |
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253 { |
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254 result = static_cast<TBool> (err); |
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255 } |
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256 return result; |
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257 } |
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258 |
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259 |
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260 // End of File |