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1 // Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // |
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15 |
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16 #include "LogNotify.h" |
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17 #include "logservpanic.h" |
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18 #include "LogServBackupInterface.h" |
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19 #include "LogServDatabaseChangeInterface.h" |
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20 |
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21 |
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22 CLogNotify::CLogNotify(MLogServBackupInterface& aBackupInterface, MLogServDatabaseChangeInterface& aChangeInterface, TInt aPriority) |
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23 : CTimer(aPriority), iBackupInterface(aBackupInterface), iChangeInterface(aChangeInterface), iCompleteClientMessage(ETrue) |
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24 { |
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25 CActiveScheduler::Add(this); |
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26 } |
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27 |
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28 CLogNotify::~CLogNotify() |
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29 { |
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30 LOGTEXT("CLogNotify::~CLogNotify()"); |
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31 |
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32 // This will only complete the client-side request if its not already |
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33 // been completed |
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34 Cancel(); |
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35 // |
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36 iChangeInterface.DCIRequestChangeNotificationsCancel(*this); |
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37 iBackupInterface.BIObserverRemove(*this); |
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38 |
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39 LOGTEXT("CLogNotify::~CLogNotify() - end"); |
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40 } |
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41 |
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42 void CLogNotify::ConstructL() |
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43 { |
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44 LOGTEXT("CLogNotify::ConstructL()"); |
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45 |
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46 CTimer::ConstructL(); |
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47 |
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48 // Register for change events |
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49 iChangeInterface.DCIRequestChangeNotificationsL(*this); |
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50 |
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51 // Register for backup events |
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52 iBackupInterface.BIObserverAddL(*this, MLogServBackupInterface::EObjectClientChangeNotifications); |
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53 |
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54 LOGTEXT("CLogNotify::ConstructL() - end"); |
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55 } |
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56 |
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57 CLogNotify* CLogNotify::NewL(MLogServBackupInterface& aBackupInterface, MLogServDatabaseChangeInterface& aChangeInterface, TInt aPriority) |
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58 { |
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59 CLogNotify* self = new(ELeave)CLogNotify(aBackupInterface, aChangeInterface, aPriority); |
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60 CleanupStack::PushL(self); |
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61 self->ConstructL(); |
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62 CleanupStack::Pop(); // self |
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63 return self; |
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64 } |
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65 |
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66 ///////////////////////////////////////////////////////////////////////////////////////// |
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67 ///////////////////////////////////////////////////////////////////////////////////////// |
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68 ///////////////////////////////////////////////////////////////////////////////////////// |
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69 |
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70 void CLogNotify::DCOHandleChangeEventsL(const CLogChangeDefinition& /*aChanges*/) |
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71 // |
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72 // Handle changes within the log database |
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73 // |
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74 { |
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75 LOGTEXT2("CLogNotify::DCOHandleChangeEventsL() - client thread is: %S", &iClientThreadName); |
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76 |
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77 // Increment number of changes but only notify the client side request |
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78 // if the delay timer isn't running. |
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79 ++iCommit; |
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80 // |
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81 if (!IsActive()) |
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82 CheckForChanges(); |
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83 |
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84 LOGTEXT("CLogNotify::DCOHandleChangeEventsL() - end"); |
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85 } |
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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 |
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91 void CLogNotify::BOHandleEventL(TLogServBackupEvent aEvent) |
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92 { |
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93 switch(aEvent) |
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94 { |
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95 case EBackupStarting: |
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96 LOGTEXT("CLogNotify::BOHandleEventL(EBackupStarting)"); |
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97 |
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98 // A rather inelegant fix but gets rid of one whole class |
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99 iCompleteClientMessage = EFalse; |
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100 Cancel(); |
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101 iCompleteClientMessage = ETrue; |
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102 break; |
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103 |
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104 case EBackupEnded: |
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105 LOGTEXT("CLogNotify::BOHandleEventL(EBackupEnded)"); |
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106 // Simulate a change |
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107 ++iCommit; |
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108 if (!IsActive()) |
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109 CheckForChanges(); |
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110 break; |
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111 } |
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112 |
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113 LOGTEXT("CLogNotify::BOHandleEventL() - end"); |
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114 } |
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115 |
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116 ///////////////////////////////////////////////////////////////////////////////////////// |
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117 ///////////////////////////////////////////////////////////////////////////////////////// |
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118 ///////////////////////////////////////////////////////////////////////////////////////// |
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119 |
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120 void CLogNotify::Notify(TTimeIntervalMicroSeconds32 aDelay, const RMessage2& aMessage) |
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121 |
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122 { |
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123 #ifdef LOGGING_ENABLED |
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124 RThread t; |
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125 aMessage.Client(t); |
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126 iClientThreadName = t.Name(); |
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127 t.Close(); |
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128 LOGTEXT3("CLogNotify::Notify(%d, %S)", aDelay.Int(), &iClientThreadName); |
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129 #endif |
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130 |
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131 __ASSERT_DEBUG(!IsActive(), Panic(ELogAlreadyActive18)); |
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132 Cancel(); |
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133 |
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134 // Reset our change counter |
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135 if (iLastCommit == 0) |
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136 iLastCommit = iCommit; |
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137 |
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138 // Save a message pointer to client request status |
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139 iMessagePtr = aMessage; |
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140 |
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141 // Wait until the delay has passed before notifying clients of changes |
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142 After(aDelay); |
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143 |
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144 LOGTEXT("CLogNotify::Notify() - end"); |
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145 } |
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146 |
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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 void CLogNotify::Cancel() |
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152 { |
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153 LOGTEXT2("CLogNotify::Cancel() - client thread is: %S", &iClientThreadName); |
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154 |
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155 CActive::Cancel(); |
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156 |
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157 // Reset |
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158 iLastCommit = 0; |
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159 |
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160 // Complete the client-side observer |
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161 if (iCompleteClientMessage) |
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162 CompleteClientRequest(KErrCancel); |
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163 |
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164 LOGTEXT("CLogNotify::Cancel() - end"); |
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165 } |
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166 |
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167 void CLogNotify::RunL() |
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168 // |
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169 // RunL is called if the timer has expired |
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170 // |
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171 { |
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172 LOGTEXT3("CLogNotify::RunL(%d) - client thread is: %S", iStatus.Int(), &iClientThreadName); |
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173 |
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174 CheckForChanges(); |
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175 |
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176 LOGTEXT("CLogNotify::RunL() - end"); |
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177 } |
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178 |
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179 void CLogNotify::DoCancel() |
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180 { |
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181 LOGTEXT2("CLogNotify::DoCancel() - client thread is: %S", &iClientThreadName); |
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182 |
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183 // This is what really cancel's us |
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184 CTimer::DoCancel(); |
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185 |
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186 LOGTEXT("CLogNotify::DoCancel() - end"); |
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187 } |
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188 |
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189 ///////////////////////////////////////////////////////////////////////////////////////// |
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190 ///////////////////////////////////////////////////////////////////////////////////////// |
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191 ///////////////////////////////////////////////////////////////////////////////////////// |
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192 |
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193 void CLogNotify::CheckForChanges() |
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194 { |
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195 LOGTEXT4("CLogNotify::CheckForChanges() - iLastCommit = %d, iCommit = %d, client thread name: %S", iLastCommit, iCommit, &iClientThreadName); |
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196 |
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197 if (iLastCommit != iCommit) |
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198 { |
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199 LOGTEXT("CLogNotify::CheckForChanges() - changes detected, attempting to notify client"); |
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200 iLastCommit = iCommit; |
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201 CompleteClientRequest(RDbNotifier::ECommit); |
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202 } |
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203 |
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204 LOGTEXT("CLogNotify::CheckForChanges() - end"); |
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205 } |
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206 |
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207 void CLogNotify::CompleteClientRequest(TInt aCompletionCode) |
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208 { |
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209 LOGTEXT3("CLogNotify::CompleteClientRequest() - aCompletionCode = %d, thread: %S", aCompletionCode, &iClientThreadName); |
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210 |
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211 if (!iMessagePtr.IsNull()) |
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212 { |
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213 LOGTEXT2("CLogNotify::CompleteClientRequest() - completing outstanding client request status for thread: %S", &iClientThreadName); |
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214 iMessagePtr.Complete(aCompletionCode); |
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215 } |
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216 else |
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217 { |
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218 LOGTEXT2("CLogNotify::CompleteClientRequest() - thread %S doesn't have an outstanding notification request", &iClientThreadName); |
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219 } |
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220 |
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221 LOGTEXT("CLogNotify::CompleteClientRequest() - end"); |
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222 } |