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1 /* |
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2 * Copyright (c) 2006-2007 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: Background thread functionality wrapper |
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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 // INCLUDE FILES |
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21 #include "CFileManagerThreadWrapper.h" |
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22 #include "FileManagerDebug.h" |
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23 |
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24 |
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25 // ============================= MEMBER FUNCTIONS ============================= |
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26 |
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27 // ---------------------------------------------------------------------------- |
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28 // CFileManagerThreadWrapper::CFileManagerThreadWrapper() |
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29 // |
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30 // ---------------------------------------------------------------------------- |
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31 CFileManagerThreadWrapper::CFileManagerThreadWrapper() : |
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32 CActive( CActive::EPriorityStandard ) |
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33 { |
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34 } |
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35 |
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36 // ---------------------------------------------------------------------------- |
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37 // CFileManagerThreadWrapper::~CFileManagerThreadWrapper() |
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38 // |
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39 // ---------------------------------------------------------------------------- |
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40 CFileManagerThreadWrapper::~CFileManagerThreadWrapper() |
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41 { |
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42 Cancel(); |
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43 delete iNotifyObserver; |
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44 iSemaphore.Close(); |
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45 } |
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46 |
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47 // ---------------------------------------------------------------------------- |
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48 // CFileManagerThreadWrapper::NewL() |
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49 // |
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50 // ---------------------------------------------------------------------------- |
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51 CFileManagerThreadWrapper* CFileManagerThreadWrapper::NewL() |
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52 { |
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53 CFileManagerThreadWrapper* self = |
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54 new (ELeave) CFileManagerThreadWrapper(); |
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55 |
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56 CleanupStack::PushL( self ); |
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57 self->ConstructL(); |
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58 CleanupStack::Pop( self ); |
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59 return self; |
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60 } |
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61 |
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62 // ---------------------------------------------------------------------------- |
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63 // CFileManagerThreadWrapper::ConstructL() |
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64 // |
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65 // ---------------------------------------------------------------------------- |
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66 void CFileManagerThreadWrapper::ConstructL() |
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67 { |
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68 CActiveScheduler::Add( this ); |
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69 User::LeaveIfError( iSemaphore.CreateLocal( 0 ) ); |
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70 iNotifyObserver = CNotifyObserver::NewL( *this ); |
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71 } |
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72 |
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73 // ---------------------------------------------------------------------------- |
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74 // CFileManagerThreadWrapper::RunL() |
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75 // |
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76 // ---------------------------------------------------------------------------- |
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77 void CFileManagerThreadWrapper::RunL() |
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78 { |
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79 iNotifyObserver->Cancel(); |
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80 |
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81 TInt err( iStatus.Int() ); |
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82 LOG_IF_ERROR1( err, "CFileManagerThreadWrapper::RunL()-err=%d", err ) |
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83 |
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84 if ( iNotify & MFileManagerThreadFunction::ENotifyFinished ) |
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85 { |
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86 TRAP_IGNORE( iFunction->NotifyThreadClientL( |
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87 MFileManagerThreadFunction::ENotifyFinished, err ) ); |
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88 } |
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89 } |
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90 |
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91 // ---------------------------------------------------------------------------- |
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92 // CFileManagerThreadWrapper::DoNotifyL() |
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93 // |
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94 // ---------------------------------------------------------------------------- |
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95 |
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96 void CFileManagerThreadWrapper::DoNotifyL( TInt aErr ) |
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97 { |
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98 LOG_IF_ERROR1( aErr, "CFileManagerThreadWrapper::DoNotifyL()-aErr=%d", aErr ) |
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99 |
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100 iResumePending = ETrue; |
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101 |
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102 if ( aErr != KErrNone && |
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103 ( iNotify & MFileManagerThreadFunction::ENotifyError ) ) |
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104 { |
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105 iFunction->NotifyThreadClientL( |
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106 MFileManagerThreadFunction::ENotifyError, aErr ); |
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107 } |
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108 else if ( iNotify & MFileManagerThreadFunction::ENotifyStepFinished ) |
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109 { |
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110 iFunction->NotifyThreadClientL( |
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111 MFileManagerThreadFunction::ENotifyStepFinished, aErr ); |
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112 } |
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113 } |
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114 |
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115 // ---------------------------------------------------------------------------- |
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116 // CFileManagerThreadWrapper::RunError() |
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117 // |
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118 // ---------------------------------------------------------------------------- |
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119 TInt CFileManagerThreadWrapper::RunError( TInt aErr ) |
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120 { |
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121 if ( aErr != KErrNone ) |
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122 { |
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123 ERROR_LOG1( "CFileManagerThreadWrapper::RunError()-err=%d", aErr ) |
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124 iCancel = ETrue; |
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125 ResumeThread(); |
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126 } |
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127 return aErr; |
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128 } |
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129 |
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130 // ---------------------------------------------------------------------------- |
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131 // CFileManagerThreadWrapper::DoCancel() |
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132 // |
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133 // ---------------------------------------------------------------------------- |
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134 void CFileManagerThreadWrapper::DoCancel() |
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135 { |
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136 FUNC_LOG |
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137 |
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138 CancelThread(); |
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139 iSemaphore.Signal(); // To avoid deadlock |
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140 } |
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141 |
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142 // ---------------------------------------------------------------------------- |
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143 // CFileManagerThreadWrapper::StartThread() |
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144 // |
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145 // ---------------------------------------------------------------------------- |
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146 TInt CFileManagerThreadWrapper::StartThread( |
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147 MFileManagerThreadFunction& aFunction, |
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148 TUint aNotify, |
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149 TThreadPriority aPriority ) |
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150 { |
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151 FUNC_LOG |
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152 |
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153 TInt err( KErrAlreadyExists ); |
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154 |
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155 if ( !IsActive() ) |
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156 { |
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157 RThread thread; |
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158 err = thread.Create( |
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159 KNullDesC, ThreadFunction, KDefaultStackSize, NULL, this ); |
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160 if ( err == KErrNone ) |
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161 { |
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162 thread.SetPriority( aPriority ); |
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163 thread.Logon( iStatus ); |
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164 |
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165 iClientId = RThread().Id(); |
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166 iFunction = &aFunction; |
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167 iNotify = aNotify; |
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168 iCancel = EFalse; |
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169 |
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170 iNotifyObserver->Activate(); |
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171 SetActive(); |
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172 |
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173 thread.Resume(); |
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174 thread.Close(); |
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175 } |
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176 } |
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177 |
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178 LOG_IF_ERROR1( err, "CFileManagerThreadWrapper::StartThread()-err=%d", |
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179 err ) |
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180 |
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181 return err; |
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182 } |
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183 |
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184 // ---------------------------------------------------------------------------- |
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185 // CFileManagerThreadWrapper::ThreadFunction() |
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186 // |
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187 // ---------------------------------------------------------------------------- |
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188 TInt CFileManagerThreadWrapper::ThreadFunction( TAny* ptr ) |
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189 { |
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190 FUNC_LOG |
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191 |
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192 CFileManagerThreadWrapper* self = |
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193 static_cast< CFileManagerThreadWrapper* >( ptr ); |
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194 |
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195 CTrapCleanup* cleanupStack = CTrapCleanup::New(); |
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196 if ( !cleanupStack ) |
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197 { |
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198 return KErrNoMemory; |
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199 } |
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200 |
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201 TRAPD( err, self->ThreadFunctionL() ); |
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202 |
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203 self->iFunction->ReleaseThread(); |
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204 |
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205 delete cleanupStack; |
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206 |
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207 return err; |
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208 } |
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209 |
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210 // ---------------------------------------------------------------------------- |
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211 // CFileManagerThreadWrapper::ThreadFunctionL() |
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212 // |
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213 // ---------------------------------------------------------------------------- |
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214 void CFileManagerThreadWrapper::ThreadFunctionL() |
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215 { |
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216 FUNC_LOG |
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217 |
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218 iFunction->InitThreadL(); |
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219 |
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220 while ( !iCancel ) |
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221 { |
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222 TRAPD( err, iFunction->ThreadStepL() ); |
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223 |
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224 if ( !iCancel ) |
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225 { |
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226 if ( err != KErrNone && |
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227 ( iNotify & MFileManagerThreadFunction::ENotifyError ) ) |
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228 { |
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229 User::LeaveIfError( NotifyClientAndWaitConfirm( err ) ); |
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230 } |
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231 else if ( iNotify & |
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232 MFileManagerThreadFunction::ENotifyStepFinished ) |
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233 { |
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234 User::LeaveIfError( NotifyClientAndWaitConfirm( err ) ); |
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235 } |
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236 else |
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237 { |
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238 User::LeaveIfError( err ); |
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239 } |
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240 } |
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241 if ( iFunction->IsThreadDone() ) |
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242 { |
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243 break; |
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244 } |
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245 } |
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246 |
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247 if ( iCancel ) |
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248 { |
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249 User::LeaveIfError( KErrCancel ); |
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250 } |
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251 } |
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252 |
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253 // ---------------------------------------------------------------------------- |
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254 // CFileManagerThreadWrapper::CancelThread() |
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255 // |
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256 // ---------------------------------------------------------------------------- |
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257 void CFileManagerThreadWrapper::CancelThread() |
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258 { |
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259 FUNC_LOG |
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260 |
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261 iCancel = ETrue; |
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262 } |
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263 |
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264 // ---------------------------------------------------------------------------- |
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265 // CFileManagerThreadWrapper::IsThreadCanceled() |
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266 // |
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267 // ---------------------------------------------------------------------------- |
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268 TBool CFileManagerThreadWrapper::IsThreadCanceled() const |
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269 { |
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270 return iCancel; |
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271 } |
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272 |
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273 // ---------------------------------------------------------------------------- |
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274 // CFileManagerThreadWrapper::NotifyClientAndWaitConfirm() |
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275 // |
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276 // ---------------------------------------------------------------------------- |
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277 TInt CFileManagerThreadWrapper::NotifyClientAndWaitConfirm( TInt aErr ) |
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278 { |
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279 FUNC_LOG |
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280 |
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281 RThread client; |
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282 TInt err( client.Open( iClientId ) ); |
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283 |
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284 if ( err == KErrNone ) |
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285 { |
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286 iNotifyObserver->Complete( client, aErr ); |
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287 client.Close(); |
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288 iSemaphore.Wait(); // Wait resume from client |
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289 } |
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290 return err; |
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291 } |
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292 |
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293 // ---------------------------------------------------------------------------- |
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294 // CFileManagerThreadWrapper::ResumeThread() |
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295 // |
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296 // ---------------------------------------------------------------------------- |
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297 void CFileManagerThreadWrapper::ResumeThread() |
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298 { |
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299 FUNC_LOG |
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300 |
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301 if ( !iNotifyObserver->IsActive() && iResumePending ) |
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302 { |
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303 iResumePending = EFalse; |
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304 iNotifyObserver->Activate(); |
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305 iSemaphore.Signal(); // Resume thread stepping |
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306 } |
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307 } |
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308 |
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309 // ---------------------------------------------------------------------------- |
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310 // CFileManagerThreadWrapper::IsThreadStarted() |
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311 // |
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312 // ---------------------------------------------------------------------------- |
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313 TBool CFileManagerThreadWrapper::IsThreadStarted() const |
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314 { |
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315 return IsActive(); |
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316 } |
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317 |
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318 // ---------------------------------------------------------------------------- |
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319 // CFileManagerThreadWrapper::CNotifyObserver::CNotifyObserver() |
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320 // |
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321 // ---------------------------------------------------------------------------- |
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322 CFileManagerThreadWrapper::CNotifyObserver::CNotifyObserver( |
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323 CFileManagerThreadWrapper& aWrapper ) : |
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324 CActive( CActive::EPriorityStandard ), |
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325 iWrapper( aWrapper ) |
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326 { |
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327 } |
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328 |
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329 // ---------------------------------------------------------------------------- |
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330 // CFileManagerThreadWrapper::CNotifyObserver::NewL() |
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331 // |
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332 // ---------------------------------------------------------------------------- |
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333 CFileManagerThreadWrapper::CNotifyObserver* |
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334 CFileManagerThreadWrapper::CNotifyObserver::NewL( |
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335 CFileManagerThreadWrapper& aWrapper ) |
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336 { |
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337 CNotifyObserver* self = new (ELeave) CNotifyObserver( aWrapper ); |
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338 CActiveScheduler::Add( self ); |
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339 return self; |
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340 } |
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341 |
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342 // ---------------------------------------------------------------------------- |
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343 // CFileManagerThreadWrapper::CNotifyObserver::~CNotifyObserver() |
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344 // |
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345 // ---------------------------------------------------------------------------- |
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346 CFileManagerThreadWrapper::CNotifyObserver::~CNotifyObserver() |
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347 { |
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348 Cancel(); |
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349 } |
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350 |
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351 // ---------------------------------------------------------------------------- |
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352 // CFileManagerThreadWrapper::CNotifyObserver::RunL() |
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353 // |
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354 // ---------------------------------------------------------------------------- |
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355 void CFileManagerThreadWrapper::CNotifyObserver::RunL() |
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356 { |
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357 iWrapper.DoNotifyL( iStatus.Int() ); |
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358 } |
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359 |
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360 // ---------------------------------------------------------------------------- |
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361 // CFileManagerThreadWrapper::CNotifyObserver::RunError() |
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362 // |
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363 // ---------------------------------------------------------------------------- |
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364 TInt CFileManagerThreadWrapper::CNotifyObserver::RunError( TInt aErr ) |
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365 { |
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366 return iWrapper.RunError( aErr ); |
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367 } |
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368 |
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369 // ---------------------------------------------------------------------------- |
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370 // CFileManagerThreadWrapper::CNotifyObserver::DoCancel() |
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371 // |
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372 // ---------------------------------------------------------------------------- |
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373 void CFileManagerThreadWrapper::CNotifyObserver::DoCancel() |
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374 { |
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375 // Just complete status immediately since |
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376 // background thread does not complete status anymore |
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377 TRequestStatus* status = &iStatus; |
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378 User::RequestComplete( status, KErrCancel ); |
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379 } |
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380 |
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381 // ---------------------------------------------------------------------------- |
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382 // CFileManagerThreadWrapper::CNotifyObserver::Activate() |
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383 // |
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384 // ---------------------------------------------------------------------------- |
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385 void CFileManagerThreadWrapper::CNotifyObserver::Activate() |
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386 { |
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387 if ( !IsActive() ) |
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388 { |
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389 iStatus = KRequestPending; |
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390 SetActive(); |
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391 } |
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392 } |
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393 |
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394 // ---------------------------------------------------------------------------- |
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395 // CFileManagerThreadWrapper::CNotifyObserver::Complete() |
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396 // |
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397 // ---------------------------------------------------------------------------- |
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398 void CFileManagerThreadWrapper::CNotifyObserver::Complete( |
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399 RThread& aThread, TInt aResult ) |
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400 { |
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401 if ( IsActive() ) |
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402 { |
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403 TRequestStatus* status = &iStatus; |
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404 aThread.RequestComplete( status, aResult ); |
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405 } |
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406 } |
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407 |
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408 // End of File |