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1 /* |
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2 * Copyright (c) 2006-2008 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: Sensor server channel implementation |
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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 <centralrepository.h> |
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21 #include "sensrvdefines.h" |
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22 #include "senserverchannel.h" |
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23 #include "sensrvchannelbuffer.h" |
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24 #include "sensrvtransaction.h" |
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25 #include "sensrvclientserver.h" |
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26 #include "sensrvpluginproxy.h" |
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27 #include "sensrvtransactionqueue.h" |
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28 #include "sensrvssymediator.h" |
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29 #include "sensrvsession.h" |
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30 #include "sensrvchannellistener.h" |
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31 #include "sensrvservermediator.h" |
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32 #include "sensrvtransactionmonitor.h" |
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33 #include "sensrvproxymanager.h" |
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34 #include "sensrvpropertyqueue.h" |
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35 #include "sensrvconditionevaluator.h" |
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36 #include "sensrvprivatecrkeys.h" |
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37 |
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38 // --------------------------------------------------------------------------- |
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39 // 2-phase constructor |
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40 // --------------------------------------------------------------------------- |
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41 // |
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42 CSensrvChannel* CSensrvChannel::NewL( const TSensrvResourceChannelInfo& aInfo, |
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43 CSensrvPluginProxy& aProxy ) |
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44 { |
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45 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::NewL(aInfo.iChannelId: %d, aProxy: 0x%x)" ), aInfo.iChannelId, aProxy.ImplementationUid().iUid ) ); |
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46 |
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47 CSensrvChannel* self = new( ELeave ) CSensrvChannel( aInfo, aProxy ); |
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48 |
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49 CleanupStack::PushL( self ); |
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50 self->ConstructL(); |
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51 CleanupStack::Pop( self ); |
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52 |
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53 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::NewL - return 0x%x" ), self ) ); |
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54 |
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55 return self; |
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56 } |
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57 |
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58 // --------------------------------------------------------------------------- |
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59 // C++ constructor |
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60 // --------------------------------------------------------------------------- |
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61 // |
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62 CSensrvChannel::CSensrvChannel( const TSensrvChannelInfo& aInfo, |
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63 CSensrvPluginProxy& aProxy ) |
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64 : iId( aInfo.iChannelId ), |
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65 iState( EChannelStateClosed ), |
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66 iProxy( aProxy ), |
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67 iChannelInfo( aInfo ), |
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68 iHighestListenerPriority( KMinTInt ) |
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69 { |
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70 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::CSensrvChannel()" ) ) ); |
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71 |
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72 // Nothing to do |
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73 |
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74 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::CSensrvChannel - return" ) ) ); |
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75 } |
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76 |
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77 // --------------------------------------------------------------------------- |
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78 // 2nd phase of construction |
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79 // --------------------------------------------------------------------------- |
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80 // |
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81 void CSensrvChannel::ConstructL() |
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82 { |
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83 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::ConstructL()" ) ) ); |
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84 |
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85 iChannelQueue = CSensrvTransactionQueue::NewL( ETrue ); |
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86 |
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87 iChannelInfo.iChannelGroup = TSensrvResourceChannelInfo::ESensrvChannelGroupNotSolved; |
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88 |
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89 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::ConstructL - return" ) ) ); |
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90 } |
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91 |
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92 // --------------------------------------------------------------------------- |
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93 // Destructor |
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94 // --------------------------------------------------------------------------- |
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95 // |
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96 CSensrvChannel::~CSensrvChannel() |
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97 { |
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98 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::~CSensrvChannel()" ) ) ); |
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99 |
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100 TInt count( iListenerList.Count() ); |
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101 for ( TInt i=0; i < count; i++ ) |
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102 { |
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103 delete iListenerList[ i ]; |
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104 } |
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105 |
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106 iListenerList.Reset(); |
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107 |
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108 // Remove the first transactions in channel queue from mediator queues and |
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109 // transaction monitor, too. Rest of the queued transactions cannot be |
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110 // queued anywhere else, so no need to check them. |
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111 CSensrvTransaction* firstTransaction = NULL; |
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112 if ( iChannelQueue ) |
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113 { |
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114 firstTransaction = iChannelQueue->First(); |
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115 } |
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116 |
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117 if ( iProxy.ServerMediator() ) |
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118 { |
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119 iProxy.ServerMediator()->RemoveSingleTransaction( firstTransaction ); |
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120 } |
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121 if ( iProxy.SsyMediator() ) |
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122 { |
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123 iProxy.SsyMediator()->RemoveSingleTransaction( firstTransaction ); |
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124 } |
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125 if ( iProxy.TransactionMonitor() ) |
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126 { |
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127 iProxy.TransactionMonitor()->RemoveTransaction( firstTransaction ); |
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128 } |
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129 |
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130 delete iChannelQueue; |
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131 delete iChannelBuffer; |
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132 delete iDataAvailableTransaction; |
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133 delete iForceBufferFilledTransaction; |
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134 delete iForceChannelCloseTransaction; |
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135 delete iPropertyChangedTransaction; |
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136 delete iConditionEvaluator; |
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137 |
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138 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::~CSensrvChannel - return" ) ) ); |
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139 } |
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140 |
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141 |
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142 // ----------------------------------------------------------------------------- |
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143 // Handles message according to message type |
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144 // ----------------------------------------------------------------------------- |
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145 // |
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146 void CSensrvChannel::DispatchMessage( CSensrvMessage& aMessage ) |
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147 { |
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148 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::DispatchMessage(aMessage.Function(): %d)" ), aMessage.Function() ) ); |
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149 |
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150 TInt err( KErrNone ); |
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151 CSensrvTransaction* transaction = NULL; |
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152 CSensrvTransaction::TSensrvTransactionType transType( CSensrvTransaction::ETransTypeNone ); |
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153 |
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154 // Check command code and call appropriate function |
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155 switch ( aMessage.Function() ) |
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156 { |
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157 case ESensrvSrvReqOpenChannel: |
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158 { |
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159 transType = CSensrvTransaction::ETransTypeOpenChannel ; |
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160 break; |
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161 } |
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162 |
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163 case ESensrvSrvReqCloseChannel: |
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164 { |
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165 transType = CSensrvTransaction::ETransTypeCloseChannel ; |
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166 break; |
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167 } |
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168 |
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169 case ESensrvSrvReqStartListening: |
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170 { |
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171 transType = CSensrvTransaction::ETransTypeStartListening ; |
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172 break; |
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173 } |
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174 |
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175 case ESensrvSrvReqStopListening: |
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176 { |
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177 transType = CSensrvTransaction::ETransTypeStopListening ; |
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178 break; |
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179 } |
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180 |
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181 case ESensrvSrvReqAsyncChannelData: |
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182 case ESensrvSrvReqAsyncPropertyData: |
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183 case ESensrvSrvReqStopPropertyListening: |
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184 case ESensrvSrvReqAddConditionSet: |
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185 case ESensrvSrvReqRemoveConditionSet: |
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186 case ESensrvSrvReqAsyncConditionMet: |
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187 { |
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188 // Get correct listener and pass message there |
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189 CSensrvChannelListener* listener = GetListener( aMessage.Session() ); |
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190 |
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191 if ( listener ) |
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192 { |
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193 listener->DispatchMessage( aMessage ); |
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194 } |
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195 else |
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196 { |
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197 err = KErrNotFound; |
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198 aMessage.Complete( err ); |
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199 } |
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200 |
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201 break; |
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202 } |
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203 |
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204 case ESensrvSrvReqGetProperty: |
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205 { |
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206 transType = CSensrvTransaction::ETransTypeGetProperty ; |
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207 break; |
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208 } |
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209 |
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210 case ESensrvSrvReqSetProperty: |
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211 { |
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212 transType = CSensrvTransaction::ETransTypeSetProperty ; |
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213 break; |
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214 } |
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215 |
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216 case ESensrvSrvReqGetAllProperties: |
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217 { |
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218 transType = CSensrvTransaction::ETransTypeGetAllProperties ; |
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219 break; |
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220 } |
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221 |
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222 case ESensrvSrvReqStartConditionListening: |
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223 { |
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224 transType = CSensrvTransaction::ETransTypeStartConditionListening ; |
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225 break; |
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226 } |
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227 |
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228 case ESensrvSrvReqStopConditionListening: |
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229 { |
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230 transType = CSensrvTransaction::ETransTypeStopConditionListening ; |
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231 break; |
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232 } |
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233 |
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234 // Cannot identify the message |
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235 default: |
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236 { |
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237 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::DispatchMessage - ERROR: unknown command" )) ); |
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238 aMessage.Complete( KErrArgument ); |
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239 break; |
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240 } |
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241 } |
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242 //Construct Transaction |
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243 if( transType != CSensrvTransaction::ETransTypeNone ) |
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244 { |
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245 TRAP( err, transaction = CSensrvTransaction::NewL( |
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246 &aMessage, |
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247 &iProxy, |
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248 this, |
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249 transType) ); |
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250 |
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251 // Queue transaction |
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252 if ( transaction && err == KErrNone ) |
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253 { |
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254 transaction->SetState( CSensrvTransaction::ETransStateQueued ); |
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255 err = iChannelQueue->Add( transaction ); |
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256 } |
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257 } |
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258 // Handle error |
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259 if ( err != KErrNone ) |
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260 { |
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261 if ( transaction ) |
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262 { |
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263 transaction->SetErrorCode( err ); |
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264 transaction->Complete(); |
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265 delete transaction; |
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266 transaction = NULL; |
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267 } |
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268 else |
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269 { |
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270 // Do nothing, message gets deleted and completed with error |
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271 // on transaction cleanup in cases where transaction creation failed. |
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272 } |
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273 } |
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274 else |
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275 { |
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276 HandleNextTransaction(); |
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277 } |
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278 |
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279 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::DispatchMessage - return" ) ) ); |
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280 } |
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281 |
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282 // --------------------------------------------------------------------------- |
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283 // Channel opened by SSY, check that providers are correctly set and |
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284 // complete the transaction. |
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285 // --------------------------------------------------------------------------- |
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286 // |
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287 void CSensrvChannel::ChannelOpened(TInt aErrorCode, |
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288 MSsyChannelDataProvider* aDataProvider, |
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289 MSsyPropertyProvider* aSensorPropertyProvider) |
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290 { |
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291 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::ChannelOpened(aErrorCode: %d)" ), aErrorCode ) ); |
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292 |
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293 TInt err( aErrorCode ); |
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294 TInt propErr( KErrNone ); |
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295 |
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296 // If no error, set state to open, if not supported, need to solve dependent channels later |
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297 if ( err == KErrNone || err == KErrNotSupported ) |
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298 { |
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299 __ASSERT_ALWAYS( aDataProvider && aSensorPropertyProvider, |
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300 User::Panic( KSensrvPanicCategory, ESensrvPanicNullProvider ) ); |
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301 iDataProvider = aDataProvider; |
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302 iPropertyProvider = aSensorPropertyProvider; |
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303 |
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304 // Get data rate for determining maximum buffering count |
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305 TSensrvProperty property( KSensrvPropIdDataRate, KSensrvItemIndexNone, 0 ); |
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306 TRAP(propErr, iPropertyProvider->GetPropertyL( iId, property ) ); |
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307 |
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308 if ( propErr == KErrNone ) |
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309 { |
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310 TInt maxRate( 0 ); |
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311 |
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312 if ( ESensrvArrayPropertyInfo == property.GetArrayIndex() ) |
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313 { |
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314 //Array property |
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315 TInt maxValueIndex( 0 ); |
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316 property.GetMaxValue( maxValueIndex ); |
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317 property.SetItemIndex( KSensrvItemIndexNone ); //Initialize |
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318 property.SetArrayIndex( maxValueIndex ); //Set array index for filter criteria |
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319 |
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320 TRAP( propErr, iPropertyProvider->GetPropertyL( iId, property ) ); |
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321 property.GetValue( maxRate ); |
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322 } |
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323 else |
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324 { |
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325 property.GetMaxValue( maxRate ); |
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326 } |
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327 |
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328 if ( propErr == KErrNone ) |
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329 { |
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330 iMaxBufferingCount = iProxy.ProxyManager().BufferSizeMultiplier() |
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331 * maxRate |
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332 / KSensrvDataBufferLengthMultiplier; |
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333 |
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334 // Very small buffers still need buffering count of at least one |
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335 if ( iMaxBufferingCount < KSensrvMinimumBufferingCount ) |
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336 { |
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337 iMaxBufferingCount = KSensrvMinimumBufferingCount; |
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338 } |
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339 } |
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340 else |
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341 { |
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342 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::ChannelOpened - ERROR: Unable to get maximum data rate from array, using default buffer max size. Error: %d" ), propErr ) ); |
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343 iMaxBufferingCount = KSensrvDefaultMaxBufferingCount; |
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344 } |
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345 } |
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346 else |
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347 { |
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348 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::ChannelOpened - ERROR: Unable to get maximum data rate, using default buffer max size. Error: %d" ), propErr ) ); |
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349 iMaxBufferingCount = KSensrvDefaultMaxBufferingCount; |
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350 } |
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351 |
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352 iState = EChannelStateOpen; |
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353 } |
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354 |
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355 CSensrvTransaction* transaction = iChannelQueue->First(); |
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356 |
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357 // Unexpected callbacks from SSY mean that executing transaction has been cleaned, |
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358 // so we should not set the error code or notify server mediator |
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359 if ( transaction |
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360 && transaction->Type() == CSensrvTransaction::ETransTypeOpenChannel |
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361 && transaction->State() == CSensrvTransaction::ETransStateHandledAtSsy ) |
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362 { |
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363 if ( err != KErrNone && err != KErrNotSupported ) |
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364 { |
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365 transaction->SetErrorCode( err ); |
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366 } |
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367 |
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368 // Notify server thread that transaction is complete |
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369 // Error can be ignored, since we are at SSY thread |
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370 iProxy.ServerMediator()->Notify( transaction ); |
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371 } |
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372 else |
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373 { |
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374 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::ChannelOpened - Transaction cleaned already" ) ) ); |
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375 } |
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376 |
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377 |
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378 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::ChannelOpened - return" ) ) ); |
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379 } |
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380 |
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381 // --------------------------------------------------------------------------- |
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382 // Channel closed by SSY. Cleanup channel and complete the transaction. |
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383 // --------------------------------------------------------------------------- |
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384 // |
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385 void CSensrvChannel::ChannelClosed() |
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386 { |
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387 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::ChannelClosed()" ) ) ); |
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388 |
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389 iState = EChannelStateClosed; |
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390 |
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391 CSensrvTransaction* transaction = iChannelQueue->First(); |
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392 |
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393 // Unexpected callbacks from SSY mean transaction has been cleaned, so we should not |
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394 // notify server mediator |
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395 if ( transaction |
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396 && transaction->Type() == CSensrvTransaction::ETransTypeCloseChannel |
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397 && transaction->State() == CSensrvTransaction::ETransStateHandledAtSsy ) |
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398 { |
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399 // Notify server thread that transaction is complete |
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400 // Error can be ignored, since we are at SSY thread |
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401 iProxy.ServerMediator()->Notify( transaction ); |
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402 } |
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403 |
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404 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::ChannelClosed - return" ) ) ); |
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405 } |
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406 |
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407 // --------------------------------------------------------------------------- |
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408 // Availability has changed. Handle it. |
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409 // --------------------------------------------------------------------------- |
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410 // |
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411 void CSensrvChannel::HandleAvailabilityChange( const TSensrvProperty& aProperty ) |
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412 { |
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413 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleAvailabilityChange()" ) ) ); |
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414 |
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415 TInt propValue; |
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416 |
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417 aProperty.GetValue( propValue ); |
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418 |
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419 HandleAvailabilityChange( static_cast<TSensrvAvailability>( propValue ) ); |
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420 |
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421 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleAvailabilityChange - return" ) ) ); |
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422 } |
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423 |
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424 // --------------------------------------------------------------------------- |
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425 // Availability has changed. Handle it. |
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426 // --------------------------------------------------------------------------- |
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427 // |
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428 void CSensrvChannel::HandleAvailabilityChange( const TSensrvAvailability& value ) |
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429 { |
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430 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleAvailabilityChange()" ) ) ); |
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431 |
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432 switch( value ) |
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433 { |
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434 // Channel level transactions handled here |
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435 case ESensrvAvailabilityFalse: |
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436 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleAvailabilityChange - Availability changed to ESensrvAvailabilityFalse" ) ) ); |
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437 SetChannelUnavailable(); |
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438 break; |
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439 |
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440 case ESensrvAvailabilityTrue: |
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441 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleAvailabilityChange - Availability changed to ESensrvAvailabilityTrue" ) ) ); |
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442 SetChannelAvailable(); |
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443 break; |
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444 |
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445 default: |
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446 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleAvailabilityChange - Incorrect value received for Availability, Value ignored" ) ) ); |
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447 break; |
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448 } |
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449 |
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450 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleAvailabilityChange - return" ) ) ); |
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451 } |
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452 |
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453 // --------------------------------------------------------------------------- |
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454 // Availability has changed. Handle it. |
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455 // --------------------------------------------------------------------------- |
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456 // |
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457 void CSensrvChannel::SetChannelAvailable( ) |
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458 { |
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459 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::SetChannelAvailable()" ) ) ); |
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460 //start channel data |
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461 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::SetChannelAvailable - return" ) ) ); |
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462 } |
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463 |
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464 |
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465 // --------------------------------------------------------------------------- |
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466 // Availability has changed. Handle it. |
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467 // --------------------------------------------------------------------------- |
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468 // |
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469 void CSensrvChannel::SetChannelUnavailable( ) |
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470 { |
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471 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::SetChannelUnavailable()" ) ) ); |
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472 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::SetChannelUnavailable - return" ) ) ); |
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473 } |
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474 |
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475 // --------------------------------------------------------------------------- |
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476 // Property has changed. Store changed property to property queue. |
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477 // --------------------------------------------------------------------------- |
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478 // |
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479 TBool CSensrvChannel::StoreChangedProperty( const TSensrvProperty& aProperty, |
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480 const CSensrvSession* aIgnoreSession ) |
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481 { |
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482 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::StoreChangedProperty(aProperty.GetPropertyId() 0x%x, aIgnoreSession: 0x%x)" ), aProperty.GetPropertyId(), aIgnoreSession ) ); |
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483 |
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484 TBool retval( EFalse ); |
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485 TInt propertyId = aProperty.GetPropertyId(); |
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486 |
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487 if ( ( propertyId == KSensrvPropIdAvailability ) ) |
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488 { |
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489 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::StoreChangedProperty - server property changed: %d" ), propertyId ) ); |
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490 |
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491 HandleAvailabilityChange( aProperty ); |
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492 } |
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493 |
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494 TInt i( iListenerList.Count() ); |
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495 TInt err( KErrNone ); |
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496 |
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497 for (i--; i >= 0; i--) |
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498 { |
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499 if ( &( iListenerList[ i ]->Session()) != aIgnoreSession ) |
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500 { |
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501 err = iListenerList[ i ]->StoreChangedProperty( aProperty ); |
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502 |
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503 if ( err != KErrNone ) |
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504 { |
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505 // Probably OOM. Not critical to lose property change notification. |
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506 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::StoreChangedProperty - ERROR: Error while adding property change to listener queue: %d" ), err ) ); |
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507 } |
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508 else |
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509 { |
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510 retval = ETrue; |
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511 } |
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512 } |
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513 } |
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514 |
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515 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::StoreChangedProperty - return: %d" ), retval ) ); |
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516 |
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517 return retval; |
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518 } |
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519 |
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520 // --------------------------------------------------------------------------- |
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521 // Handles transaction finalization and completes transaction on channels's queue. |
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522 // --------------------------------------------------------------------------- |
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523 // |
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524 void CSensrvChannel::CompleteTransaction( CSensrvTransaction* aTransaction ) |
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525 { |
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526 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::CompleteTransaction(aTransaction: 0x%x)" ), aTransaction ) ); |
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527 |
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528 __ASSERT_ALWAYS( aTransaction, User::Panic( KSensrvPanicCategory, ESensrvPanicNullTransaction ) ); |
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529 |
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530 TInt err = aTransaction->ErrorCode(); |
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531 |
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532 switch( aTransaction->Type() ) |
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533 { |
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534 // Channel level transactions handled here |
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535 case CSensrvTransaction::ETransTypeOpenChannel: |
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536 { |
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537 // If opening failed at SSY, no need to create buffer |
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538 if ( iState != EChannelStateClosed ) |
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539 { |
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540 if ( !iChannelBuffer ) |
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541 { |
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542 TRAP( err, iChannelBuffer = |
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543 CSensrvChannelBuffer::NewL( iChannelInfo.iDataItemSize, |
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544 iMaxBufferingCount * KSensrvDataBufferLengthMultiplier ) ) |
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545 |
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546 if ( err == KErrNone) |
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547 { |
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548 // Write maximum buffering count and data item size to message |
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549 CSensrvTransaction::TChannelOpenMessageData data( iMaxBufferingCount, iChannelInfo.iDataItemSize ); |
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550 err = aTransaction->SetMessageData( &data ); |
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551 } |
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552 else |
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553 { |
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554 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::CompleteTransaction - ERROR: Buffer creation failed: %d" ), err ) ); |
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555 } |
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556 } |
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557 } |
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558 |
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559 if ( err == KErrNone ) |
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560 { |
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561 // Update indicator values on open and notify changes to clients |
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562 |
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563 HandleDependencyOnOpen(); |
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564 |
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565 HandleSetPropertySuccessIndOnCreateOrDelete(); |
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566 } |
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567 else |
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568 { |
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569 // If there was error, delete the listener |
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570 aTransaction->SetErrorCode(err); |
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571 DeleteListener( aTransaction->Session() ); |
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572 CloseIfNeeded(); |
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573 } |
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574 } |
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575 break; |
|
576 |
|
577 case CSensrvTransaction::ETransTypeCloseChannel: |
|
578 { |
|
579 // If an error occurred, channel was left open, so only delete buffer |
|
580 // and condition evaluator if channel state is closed. |
|
581 if ( iState == EChannelStateClosed ) |
|
582 { |
|
583 delete iChannelBuffer; |
|
584 iChannelBuffer = NULL; |
|
585 |
|
586 delete iConditionEvaluator; |
|
587 iConditionEvaluator = NULL; |
|
588 } |
|
589 |
|
590 // Client listener is already deleted successfully, so report ok to client |
|
591 // even if there was an error. |
|
592 aTransaction->SetErrorCode( KErrNone ); |
|
593 } |
|
594 break; |
|
595 |
|
596 case CSensrvTransaction::ETransTypeStartListening: |
|
597 case CSensrvTransaction::ETransTypeStartConditionListening: |
|
598 { |
|
599 if ( err != KErrNone ) |
|
600 { |
|
601 CSensrvChannelListener* listener = GetListener(aTransaction->Session()); |
|
602 |
|
603 // If error at SSY, stop listening |
|
604 if ( listener ) |
|
605 { |
|
606 CSensrvChannelListener::TSensrvChannelListenerState stopType = |
|
607 aTransaction->Type() == CSensrvTransaction::ETransTypeStartListening ? |
|
608 CSensrvChannelListener::EChannelListenerStateDataListening : |
|
609 CSensrvChannelListener::EChannelListenerStateConditionListening; |
|
610 |
|
611 // Stop listening that was started, but do not delete any |
|
612 // added conditions, as client will expect them to be added if he retries. |
|
613 listener->StopListening(stopType, EFalse); |
|
614 } |
|
615 else |
|
616 { |
|
617 // No listener found, we may have to close |
|
618 CloseIfNeeded(); |
|
619 } |
|
620 } |
|
621 else |
|
622 { |
|
623 iState = EChannelStateListening; |
|
624 } |
|
625 } |
|
626 break; |
|
627 |
|
628 case CSensrvTransaction::ETransTypeStopListening: |
|
629 case CSensrvTransaction::ETransTypeStopConditionListening: |
|
630 { |
|
631 if ( err != KErrNone ) |
|
632 { |
|
633 // If an error occurred, assume channel was left active still. |
|
634 // However, client listener state has already been set to not-active, |
|
635 // so report ok to client. |
|
636 aTransaction->SetErrorCode( KErrNone ); |
|
637 } |
|
638 else |
|
639 { |
|
640 iState = EChannelStateOpen; |
|
641 } |
|
642 } |
|
643 break; |
|
644 |
|
645 case CSensrvTransaction::ETransTypeMediatorNewDataAvailable: |
|
646 { |
|
647 // Remove force transaction from monitor |
|
648 if ( iForcingBufferFilled ) |
|
649 { |
|
650 iForcingBufferFilled = EFalse; |
|
651 iProxy.TransactionMonitor()->RemoveTransaction( iForceBufferFilledTransaction ); |
|
652 } |
|
653 |
|
654 // Notify each listener that new data is available |
|
655 TInt i( iListenerList.Count() ); |
|
656 for ( i--; i >= 0; i-- ) |
|
657 { |
|
658 err = iListenerList[ i ]->NewDataAvailable(); |
|
659 |
|
660 // Delete any listeners who cannot handle new data, as most likely the message |
|
661 // descriptors for writing are invalid. |
|
662 if (err != KErrNone) |
|
663 { |
|
664 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::CompleteTransaction - ERROR: Error while handling new data in listener, deleting... (%d)" ), err ) ); |
|
665 delete iListenerList[ i ]; |
|
666 iListenerList.Remove( i ); |
|
667 CloseIfNeeded(); |
|
668 } |
|
669 } |
|
670 } |
|
671 break; |
|
672 |
|
673 case CSensrvTransaction::ETransTypeMediatorForceChannelClose: |
|
674 { |
|
675 // If channel is already closed, no need for this |
|
676 if ( iState != EChannelStateClosed ) |
|
677 { |
|
678 // First transaction requires special handling, if it is already executing. |
|
679 CSensrvTransaction* first = iChannelQueue->First(); |
|
680 TBool closeNeeded( ETrue ); |
|
681 |
|
682 if ( first |
|
683 && first->State() != CSensrvTransaction::ETransStateQueued |
|
684 && first->Type() != CSensrvTransaction::ETransTypeCloseChannel ) |
|
685 { |
|
686 // There is a non-close transaction executing, so |
|
687 // remove the transaction from mediators |
|
688 if ( iProxy.ServerMediator() ) |
|
689 { |
|
690 iProxy.ServerMediator()->RemoveSingleTransaction( first ); |
|
691 } |
|
692 |
|
693 if ( iProxy.SsyMediator() ) |
|
694 { |
|
695 iProxy.SsyMediator()->RemoveSingleTransaction( first ); |
|
696 } |
|
697 } |
|
698 else if ( first |
|
699 && first->State() != CSensrvTransaction::ETransStateQueued |
|
700 && first->Type() == CSensrvTransaction::ETransTypeCloseChannel ) |
|
701 { |
|
702 // The first executing transaction is already a close transaction, |
|
703 // so it is not necessary to force close anymore. |
|
704 closeNeeded = EFalse; |
|
705 } |
|
706 else |
|
707 { |
|
708 // No executing transaction, proceed with close |
|
709 } |
|
710 |
|
711 // Delete listeners and their transactions if close needed |
|
712 if (closeNeeded) |
|
713 { |
|
714 TInt i(iListenerList.Count()); |
|
715 for ( i--; i >= 0; i-- ) |
|
716 { |
|
717 iChannelQueue->Remove( &( iListenerList[ i ]->Session() ) ); |
|
718 |
|
719 delete iListenerList[ i ]; |
|
720 iListenerList.Remove( i ); |
|
721 } |
|
722 |
|
723 // Insert new channel close to beginning of the queue |
|
724 // (Queue might still have open channel transactions in it) |
|
725 CSensrvTransaction* closeTransaction = NULL; |
|
726 TRAP( err, closeTransaction = CSensrvTransaction::NewL( |
|
727 NULL, |
|
728 &iProxy, |
|
729 this, |
|
730 CSensrvTransaction::ETransTypeCloseChannel ) ); |
|
731 |
|
732 if ( (err==KErrNone) && closeTransaction ) |
|
733 { |
|
734 closeTransaction->SetState( CSensrvTransaction::ETransStateQueued ); |
|
735 err = iChannelQueue->Add( closeTransaction, EFalse ); |
|
736 |
|
737 if ( err != KErrNone ) |
|
738 { |
|
739 delete closeTransaction; |
|
740 closeTransaction = NULL; |
|
741 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::CompleteTransaction - ERROR: Unable to queue internal close transaction" ) ) ); |
|
742 } |
|
743 else |
|
744 { |
|
745 HandleNextTransaction(); |
|
746 } |
|
747 } |
|
748 else |
|
749 { |
|
750 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::CompleteTransaction - ERROR: Unable to create internal close transaction" ) ) ); |
|
751 } |
|
752 } |
|
753 } |
|
754 else |
|
755 { |
|
756 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::CompleteTransaction - Channel already closed when handling ETransTypeMediatorForceChannelClose." ) ) ); |
|
757 } |
|
758 } |
|
759 break; |
|
760 |
|
761 case CSensrvTransaction::ETransTypeGetProperty: |
|
762 { |
|
763 //Data is already written in SSY mediator |
|
764 } |
|
765 break; |
|
766 |
|
767 case CSensrvTransaction::ETransTypeGetAllProperties: |
|
768 { |
|
769 //Data is already written in SSY mediator |
|
770 } |
|
771 break; |
|
772 |
|
773 case CSensrvTransaction::ETransTypeSetProperty: |
|
774 { |
|
775 // Since SSY won't be sending the property change notification to this channel, |
|
776 // send notification to other clients than setter. |
|
777 } |
|
778 break; |
|
779 |
|
780 case CSensrvTransaction::ETransTypeMediatorPropertyChanged: |
|
781 { |
|
782 // Update indicator values on property change and notify changes to clients |
|
783 HandleSetPropertySuccessIndOnPropertyChange(); |
|
784 |
|
785 // Notify each listener that new data is available |
|
786 TInt i( iListenerList.Count() ); |
|
787 for ( i--; i >= 0; i-- ) |
|
788 { |
|
789 iListenerList[i]->HandleNextProperty(); |
|
790 } |
|
791 } |
|
792 break; |
|
793 |
|
794 default: |
|
795 // Unexpected transaction type, so we do not know what to do with it |
|
796 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::CompleteTransaction - ERROR: Invalid transaction type" ) ) ); |
|
797 User::Panic(KSensrvPanicCategory, ESensrvPanicUnknownTransactionType); |
|
798 break; |
|
799 } |
|
800 |
|
801 // Mediator transactions do not cause further handling |
|
802 if ( !aTransaction->IsMediatorType() ) |
|
803 { |
|
804 // Complete the transaction |
|
805 iProxy.TransactionMonitor()->RemoveTransaction(aTransaction); |
|
806 iChannelQueue->Remove(aTransaction, CSensrvTransactionQueue::ERemovalTypeComplete); |
|
807 |
|
808 // Execute next transaction in queue, if any |
|
809 HandleNextTransaction(); |
|
810 } |
|
811 |
|
812 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::CompleteTransaction - return" ) ) ); |
|
813 } |
|
814 |
|
815 // --------------------------------------------------------------------------- |
|
816 // Cleans up everything related to terminated session. |
|
817 // --------------------------------------------------------------------------- |
|
818 // |
|
819 void CSensrvChannel::SessionTerminated( CSensrvSession* aSession ) |
|
820 { |
|
821 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::SessionTerminated(aSession: 0x%x)"),aSession ) ); |
|
822 |
|
823 // Cleanup any waiting transactions for this session |
|
824 iChannelQueue->Remove(aSession); |
|
825 |
|
826 // Delete listener for session if it exists |
|
827 DeleteListener(aSession); |
|
828 |
|
829 // Close channel if channel state, transactions and listeners are not correctly |
|
830 // matched. |
|
831 CloseIfNeeded(); |
|
832 |
|
833 // NOTE: Session termination for a session that has currently executing synchronous |
|
834 // client/server message is _extremely_ unlikely and will probably never happen in real devices, |
|
835 // Only plausable case that comes to mind is that client thread is paniced by some other server |
|
836 // handling some asynchronous message for that client, while the client is waiting on |
|
837 // synchronous SendReceive call to sensor server. |
|
838 |
|
839 // However, just in case, handle the next transaction. If next transaction and removed transaction |
|
840 // were both open channel or close channel transactions, the handling of next transaction might |
|
841 // cause error at SSY, depending on timing and how SSY handles simultaneous open/close to the same |
|
842 // channel. Preventing this from occuring in server code seems to be quite complex, |
|
843 // so for a case this rare it is not cost effective. |
|
844 HandleNextTransaction(); |
|
845 |
|
846 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::SessionTerminated - return" )) ); |
|
847 } |
|
848 |
|
849 // --------------------------------------------------------------------------- |
|
850 // Handles SSY notification failure. |
|
851 // --------------------------------------------------------------------------- |
|
852 // |
|
853 void CSensrvChannel::HandleSsyNotifyFailure() |
|
854 { |
|
855 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleSsyNotifyFailure()" ) ) ); |
|
856 |
|
857 // Check queued transactions to determine if they are handled at SSY |
|
858 CSensrvTransaction* transaction = iChannelQueue->First(); |
|
859 |
|
860 if ( transaction && transaction->State() == CSensrvTransaction::ETransStateNotifyFailed ) |
|
861 { |
|
862 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleSsyNotifyFailure - Notify failed transaction found" ) ) ); |
|
863 transaction->SetState( CSensrvTransaction::ETransStateHandledAtSsy ); |
|
864 CompleteTransaction( transaction ); |
|
865 } |
|
866 |
|
867 // Also check new data available transaction |
|
868 if ( iDataAvailableTransaction && iDataAvailableTransaction->State() == CSensrvTransaction::ETransStateNotifyFailed ) |
|
869 { |
|
870 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleSsyNotifyFailure - Notify failed for iDataAvailableTransaction" ) ) ); |
|
871 iDataAvailableTransaction->SetState( CSensrvTransaction::ETransStateHandledAtSsy ); |
|
872 CompleteTransaction( iDataAvailableTransaction ); |
|
873 } |
|
874 |
|
875 // Also check force channel close transaction |
|
876 if ( iForceChannelCloseTransaction && iForceChannelCloseTransaction->State() == CSensrvTransaction::ETransStateNotifyFailed ) |
|
877 { |
|
878 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleSsyNotifyFailure - Notify failed for iForceChannelCloseTransaction" ) ) ); |
|
879 iForceChannelCloseTransaction->SetState( CSensrvTransaction::ETransStateHandledAtSsy ); |
|
880 CompleteTransaction( iForceChannelCloseTransaction ); |
|
881 } |
|
882 |
|
883 // Also check property change transaction |
|
884 if ( iPropertyChangedTransaction && iPropertyChangedTransaction->State() == CSensrvTransaction::ETransStateNotifyFailed ) |
|
885 { |
|
886 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleSsyNotifyFailure - Notify failed for iPropertyChangedTransaction" ) ) ); |
|
887 iPropertyChangedTransaction->SetState( CSensrvTransaction::ETransStateHandledAtSsy ); |
|
888 CompleteTransaction( iPropertyChangedTransaction ); |
|
889 } |
|
890 |
|
891 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleSsyNotifyFailure - return" ) ) ); |
|
892 } |
|
893 |
|
894 // --------------------------------------------------------------------------- |
|
895 // Forces buffer filled at SSY. |
|
896 // --------------------------------------------------------------------------- |
|
897 // |
|
898 void CSensrvChannel::ForceBufferFilled() |
|
899 { |
|
900 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::ForceBufferFilled()" ) ) ); |
|
901 |
|
902 // Notify SSY thread that buffer fill must be forced. |
|
903 if (iForceBufferFilledTransaction) |
|
904 { |
|
905 if (iForcingBufferFilled) |
|
906 { |
|
907 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::ForceBufferFilled - Already forcing bufferfilled" ) ) ); |
|
908 } |
|
909 else |
|
910 { |
|
911 TInt err = iProxy.SsyMediator()->Notify(iForceBufferFilledTransaction); |
|
912 |
|
913 if (err == KErrNone) |
|
914 { |
|
915 iForcingBufferFilled = ETrue; |
|
916 iProxy.TransactionMonitor()->AddTransaction(iForceBufferFilledTransaction); |
|
917 } |
|
918 else |
|
919 { |
|
920 // Just trace, it is not critical if notifying SSY mediator fails in this case. |
|
921 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::ForceBufferFilled - ERROR: SSY mediator notify failed: %d" ), err ) ); |
|
922 } |
|
923 } |
|
924 } |
|
925 else |
|
926 { |
|
927 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::ForceBufferFilled - ERROR: Buffer filled transaction NULL" ) ) ); |
|
928 } |
|
929 |
|
930 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::ForceBufferFilled - return. iForcingBufferFilled: %d" ), iForcingBufferFilled ) ); |
|
931 } |
|
932 |
|
933 // --------------------------------------------------------------------------- |
|
934 // Recalculates buffering count to match lowest need of all buffers. |
|
935 // |
|
936 // Note: Even for one client it is necessary to recalculate buffering count, |
|
937 // as buffering period caused buffer fills combined with a client that |
|
938 // occasionally doesn't get data in timely manner will need recalculation |
|
939 // after such events. |
|
940 // Trying to optimize this to skip unnecessary recalculation is quite complex, |
|
941 // and probably not that much faster than just recalculating always |
|
942 // without extra checks. |
|
943 // --------------------------------------------------------------------------- |
|
944 // |
|
945 TInt CSensrvChannel::RecalculateBufferingCount() |
|
946 { |
|
947 TInt count(iListenerList.Count()); |
|
948 |
|
949 TInt previousLow(iMaxBufferingCount); |
|
950 |
|
951 // Determine lowest remaining need of each listener. |
|
952 TInt remainingCount(0); |
|
953 |
|
954 if (count) |
|
955 { |
|
956 for (TInt i=0; previousLow > KSensrvMinimumBufferingCount && i < count; i++) |
|
957 { |
|
958 if ( iListenerList[i]->State() & CSensrvChannelListener::EChannelListenerStateConditionListening |
|
959 || iListenerList[i]->State() & CSensrvChannelListener::EChannelListenerStateDataListening ) |
|
960 { |
|
961 remainingCount = iListenerList[i]->RemainingBufferingCount(); |
|
962 |
|
963 if (remainingCount < previousLow) |
|
964 { |
|
965 previousLow = remainingCount; |
|
966 } |
|
967 } |
|
968 } |
|
969 } |
|
970 else |
|
971 { |
|
972 // No listeners, so return zero count. |
|
973 previousLow = 0; |
|
974 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::RecalculateBufferingCount - No listeners" ) ) ); |
|
975 } |
|
976 |
|
977 BUFFER_TRACE( (_L( "#### Recalculated buffering count: %d" ), previousLow) ); |
|
978 |
|
979 return previousLow; |
|
980 } |
|
981 |
|
982 // --------------------------------------------------------------------------- |
|
983 // CSensrvChannel::GetAffectedClients |
|
984 // |
|
985 // Client is considered as "affected" if the channel is opened by the client. |
|
986 // When the channel is open, channel listener also exists. |
|
987 // Priorities are queried from ChannelListener. |
|
988 // --------------------------------------------------------------------------- |
|
989 // |
|
990 void CSensrvChannel::GetAffectedClients( RArray<TInt>& aAffectedClients, |
|
991 TSecureId aCallerSecureId ) |
|
992 { |
|
993 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::GetAffectedClients()" ) ) ); |
|
994 |
|
995 TInt count(iListenerList.Count()); |
|
996 for (TInt i=0; i < count; i++) |
|
997 { |
|
998 if (aCallerSecureId == iListenerList[i]->Session().SecureId() ) |
|
999 { |
|
1000 //Filter away |
|
1001 } |
|
1002 else |
|
1003 { |
|
1004 aAffectedClients.Append( iListenerList[i]->Priority() ); |
|
1005 } |
|
1006 } |
|
1007 |
|
1008 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::GetAffectedClients - %d client(s) found - return" ), count ) ); |
|
1009 } |
|
1010 |
|
1011 // --------------------------------------------------------------------------- |
|
1012 // Creates a new condition evaluator or returns an existing one. |
|
1013 // Once the evaluator is created, it will not be destroyed until channel |
|
1014 // is closed. |
|
1015 // --------------------------------------------------------------------------- |
|
1016 // |
|
1017 CSensrvConditionEvaluator* CSensrvChannel::ConditionEvaluatorL() |
|
1018 { |
|
1019 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::ConditionEvaluatorL()" ) ) ); |
|
1020 |
|
1021 if (!iConditionEvaluator) |
|
1022 { |
|
1023 iConditionEvaluator = CSensrvConditionEvaluator::NewL( iChannelInfo ); |
|
1024 } |
|
1025 |
|
1026 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::ConditionEvaluatorL - return 0x%x" ), iConditionEvaluator ) ); |
|
1027 |
|
1028 return iConditionEvaluator; |
|
1029 } |
|
1030 |
|
1031 // --------------------------------------------------------------------------- |
|
1032 // Handles next transaction |
|
1033 // --------------------------------------------------------------------------- |
|
1034 // |
|
1035 void CSensrvChannel::HandleNextTransaction() |
|
1036 { |
|
1037 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleNextTransaction()" ) ) ); |
|
1038 |
|
1039 CSensrvTransaction* transaction = iChannelQueue->First(); |
|
1040 |
|
1041 // Handle transactions until a transaction is left in executing state |
|
1042 while (transaction) |
|
1043 { |
|
1044 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleNextTransaction - Handling transaction of type: %d" ), transaction->Type() ) ); |
|
1045 |
|
1046 if (transaction->State() != CSensrvTransaction::ETransStateQueued) |
|
1047 { |
|
1048 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleNextTransaction - Previous transaction still executing" ) ) ); |
|
1049 transaction = NULL; |
|
1050 break; |
|
1051 } |
|
1052 |
|
1053 TInt err(KErrNone); |
|
1054 |
|
1055 transaction->SetState(CSensrvTransaction::ETransStateExecuting); |
|
1056 |
|
1057 TBool ssyTransaction(EFalse); |
|
1058 |
|
1059 // Check channel closed state, only open and close have special operations |
|
1060 if ( iState == EChannelStateClosed |
|
1061 && ( transaction->Type() != CSensrvTransaction::ETransTypeOpenChannel |
|
1062 && transaction->Type() != CSensrvTransaction::ETransTypeCloseChannel ) ) |
|
1063 { |
|
1064 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleNextTransaction - ERROR: Channel closed." ) ) ); |
|
1065 err = KErrNotFound; |
|
1066 |
|
1067 // Since channel is closed, also delete listener, if it exists |
|
1068 DeleteListener(transaction->Session()); |
|
1069 } |
|
1070 else |
|
1071 { |
|
1072 switch(transaction->Type()) |
|
1073 { |
|
1074 /////////////////////////////////////////////// |
|
1075 case CSensrvTransaction::ETransTypeOpenChannel: |
|
1076 { |
|
1077 // If session already has a listener, channel is already open |
|
1078 // for this client, which is an error |
|
1079 CSensrvChannelListener* listener = GetListener(transaction->Session()); |
|
1080 |
|
1081 if (listener) |
|
1082 { |
|
1083 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleNextTransaction - ERROR: ETransTypeOpenChannel, listener already exists." ) ) ); |
|
1084 err = KErrAlreadyExists; |
|
1085 } |
|
1086 else |
|
1087 { |
|
1088 // Add new listener for the session |
|
1089 TRAP(err, listener = CSensrvChannelListener::NewL(*transaction->Session(), *this, iProxy)); |
|
1090 |
|
1091 if (err == KErrNone) |
|
1092 { |
|
1093 err = iListenerList.Append(listener); |
|
1094 if (err == KErrNone ) |
|
1095 { |
|
1096 // Quick update is allowed only when the highest has been searched earlier. |
|
1097 if ( iHighestListenerPriorityMultiples > 0 ) |
|
1098 { |
|
1099 // Update cached highest listener priority tracking |
|
1100 TInt priority( listener->Priority() ); |
|
1101 if ( priority > iHighestListenerPriority ) |
|
1102 { |
|
1103 iHighestListenerPriority = priority; |
|
1104 iHighestListenerPriorityMultiples = 1; |
|
1105 } |
|
1106 else if ( priority == iHighestListenerPriority ) |
|
1107 { |
|
1108 iHighestListenerPriorityMultiples++; |
|
1109 } |
|
1110 } |
|
1111 } |
|
1112 else |
|
1113 { |
|
1114 delete listener; |
|
1115 listener = NULL; |
|
1116 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleNextTransaction - ERROR: ETransTypeOpenChannel, listener append failed: %d." ), err ) ); |
|
1117 } |
|
1118 } |
|
1119 else |
|
1120 { |
|
1121 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleNextTransaction - ERROR: ETransTypeOpenChannel, new listener creation failed: %d" ), err ) ); |
|
1122 } |
|
1123 } |
|
1124 |
|
1125 // If channel state is closed, SSY needs to handle transaction to open channel. |
|
1126 // Also stop unloading timer if it is active. |
|
1127 if ( err == KErrNone && iState == EChannelStateClosed ) |
|
1128 { |
|
1129 // Stop unload timer if it happens to be active |
|
1130 iProxy.StopUnloadTimer(); |
|
1131 |
|
1132 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleNextTransaction - Opening channel to SSY" ) ) ); |
|
1133 ssyTransaction = ETrue; |
|
1134 } |
|
1135 |
|
1136 // Write maximum buffering count and data item size to message, if buffer exists. |
|
1137 if ( err == KErrNone && iChannelBuffer ) |
|
1138 { |
|
1139 CSensrvTransaction::TChannelOpenMessageData data( iMaxBufferingCount, iChannelInfo.iDataItemSize ); |
|
1140 err = transaction->SetMessageData( &data ); |
|
1141 } |
|
1142 |
|
1143 // Create mediator transactions to be used in notifying property changes. |
|
1144 // These transactions are never deleted and are reused. |
|
1145 if ( err == KErrNone && !iPropertyChangedTransaction ) |
|
1146 { |
|
1147 TRAP( err, iPropertyChangedTransaction = CSensrvTransaction::NewL( |
|
1148 NULL, |
|
1149 &iProxy, |
|
1150 this, |
|
1151 CSensrvTransaction::ETransTypeMediatorPropertyChanged ) ); |
|
1152 |
|
1153 if ( err != KErrNone ) |
|
1154 { |
|
1155 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleNextTransaction - ERROR: ETransTypeMediatorPropertyChanged transaction creation failed: %d" ), err ) ); |
|
1156 } |
|
1157 } |
|
1158 |
|
1159 if ( err != KErrNone) |
|
1160 { |
|
1161 DeleteListener(transaction->Session()); |
|
1162 } |
|
1163 // If SSY transaction required, handle the indication when the SSY transaction completes |
|
1164 if ( err == KErrNone && !ssyTransaction ) |
|
1165 { |
|
1166 HandleDependencyOnOpen(); |
|
1167 |
|
1168 // Update indicator values on open and notify changes to clients |
|
1169 HandleSetPropertySuccessIndOnCreateOrDelete(); |
|
1170 } |
|
1171 } |
|
1172 break; |
|
1173 |
|
1174 /////////////////////////////////////////////// |
|
1175 case CSensrvTransaction::ETransTypeCloseChannel: |
|
1176 { |
|
1177 //get the listener |
|
1178 CSensrvChannelListener* listener = FindListener( transaction->Session() ); |
|
1179 |
|
1180 TInt priority( KMinTInt ); |
|
1181 |
|
1182 if ( listener ) |
|
1183 { |
|
1184 priority = listener->Priority(); |
|
1185 } |
|
1186 |
|
1187 DeleteListener( transaction->Session() ); |
|
1188 |
|
1189 HandleDependencyOnClose( priority ); //listener is gone |
|
1190 |
|
1191 // If there are more listeners remaining, or channel already closed, do not close channel |
|
1192 if ( iState == EChannelStateClosed ) |
|
1193 { |
|
1194 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleNextTransaction - Channel already closed, not closing channel to SSY" ) ) ); |
|
1195 } |
|
1196 else if ( iListenerList.Count() > 0 ) |
|
1197 { |
|
1198 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleNextTransaction - More clients remaining, not closing channel to SSY" ) ) ); |
|
1199 } |
|
1200 else |
|
1201 { |
|
1202 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleNextTransaction - Closing channel to SSY" ) ) ); |
|
1203 ssyTransaction = ETrue; |
|
1204 } |
|
1205 // Update indicator values on close and notify changes to clients |
|
1206 |
|
1207 HandleSetPropertySuccessIndOnCreateOrDelete(); |
|
1208 } |
|
1209 break; |
|
1210 |
|
1211 /////////////////////////////////////////////// |
|
1212 case CSensrvTransaction::ETransTypeStartListening: |
|
1213 case CSensrvTransaction::ETransTypeStartConditionListening: |
|
1214 { |
|
1215 err = HandleStartListeningTransaction(*transaction); |
|
1216 ssyTransaction = ETrue; |
|
1217 } |
|
1218 break; |
|
1219 |
|
1220 /////////////////////////////////////////////// |
|
1221 case CSensrvTransaction::ETransTypeStopListening: |
|
1222 case CSensrvTransaction::ETransTypeStopConditionListening: |
|
1223 { |
|
1224 HandleStopListeningTransaction(*transaction, ssyTransaction); |
|
1225 } |
|
1226 break; |
|
1227 |
|
1228 /////////////////////////////////////////////// |
|
1229 case CSensrvTransaction::ETransTypeGetProperty: |
|
1230 case CSensrvTransaction::ETransTypeGetAllProperties: |
|
1231 case CSensrvTransaction::ETransTypeSetProperty: |
|
1232 { |
|
1233 ssyTransaction = ETrue; |
|
1234 CSensrvChannelListener* listener = GetListener(transaction->Session()); |
|
1235 if ( !listener ) |
|
1236 { |
|
1237 //Listener doesn't exist anymore (for some reason). |
|
1238 err = KErrNotFound; |
|
1239 } |
|
1240 } |
|
1241 break; |
|
1242 |
|
1243 /////////////////////////////////////////////// |
|
1244 default: |
|
1245 // Unexpected transaction type, so we do not know what to do with it |
|
1246 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleNextTransaction - ERROR: Invalid transaction type" ) ) ); |
|
1247 User::Panic(KSensrvPanicCategory, ESensrvPanicUnknownTransactionType); |
|
1248 break; |
|
1249 } |
|
1250 } |
|
1251 |
|
1252 if (err == KErrNone && ssyTransaction) |
|
1253 { |
|
1254 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleNextTransaction - Notifying SSY..." ) ) ); |
|
1255 // If SSY mediator is not yet initialized, it is an error |
|
1256 __ASSERT_ALWAYS(iProxy.SsyMediator(), User::Panic(KSensrvPanicCategory, ESensrvPanicNullSsyMediator)); |
|
1257 |
|
1258 // Notify SSY mediator that transaction is ready to be handled. |
|
1259 err = iProxy.SsyMediator()->Notify(transaction); |
|
1260 } |
|
1261 |
|
1262 // If there was error, transaction needs to be removed from queue (which also completes it) |
|
1263 // Transaction also needs to be completed if SSY transaction is not needed. |
|
1264 // If transaction is completed, next one in queue is handled. |
|
1265 if (err != KErrNone) |
|
1266 { |
|
1267 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleNextTransaction - ERROR: Failed to handle next transaction: %d, type: %d" ), err, transaction->Type() ) ); |
|
1268 transaction->SetErrorCode(err); |
|
1269 iChannelQueue->Remove(transaction, CSensrvTransactionQueue::ERemovalTypeComplete); |
|
1270 |
|
1271 // Prepare to handle next transaction |
|
1272 transaction = iChannelQueue->First(); |
|
1273 } |
|
1274 else if (!ssyTransaction) |
|
1275 { |
|
1276 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleNextTransaction - SSY transaction not needed, completing transaction" ) ) ); |
|
1277 iChannelQueue->Remove(transaction, CSensrvTransactionQueue::ERemovalTypeComplete); |
|
1278 |
|
1279 // Prepare to handle next transaction |
|
1280 transaction = iChannelQueue->First(); |
|
1281 } |
|
1282 else |
|
1283 { |
|
1284 // SSY transaction executing, no need for further transaction handling now |
|
1285 iProxy.TransactionMonitor()->AddTransaction(transaction); |
|
1286 transaction = NULL; |
|
1287 } |
|
1288 } // End while(transaction) |
|
1289 |
|
1290 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleNextTransaction - return" ) ) ); |
|
1291 } |
|
1292 |
|
1293 // --------------------------------------------------------------------------- |
|
1294 // Gets listener pointer from list or NULL if no listener found. |
|
1295 // --------------------------------------------------------------------------- |
|
1296 // |
|
1297 CSensrvChannelListener* CSensrvChannel::GetListener(CSensrvSession* aSession) |
|
1298 { |
|
1299 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::GetListener(aSession: 0x%x)" ), aSession ) ); |
|
1300 |
|
1301 CSensrvChannelListener* listener = NULL; |
|
1302 TInt count(iListenerList.Count()); |
|
1303 |
|
1304 for (TInt i=0; i < count; i++) |
|
1305 { |
|
1306 if (&iListenerList[i]->Session() == aSession) |
|
1307 { |
|
1308 listener = iListenerList[i]; |
|
1309 break; |
|
1310 } |
|
1311 } |
|
1312 |
|
1313 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::GetListener - return 0x%x" ), listener ) ); |
|
1314 |
|
1315 return listener; |
|
1316 } |
|
1317 |
|
1318 // --------------------------------------------------------------------------- |
|
1319 // Deletes listener if it exists |
|
1320 // --------------------------------------------------------------------------- |
|
1321 // |
|
1322 void CSensrvChannel::DeleteListener(CSensrvSession* aSession) |
|
1323 { |
|
1324 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::DeleteListener(aSession: 0x%x)" ), aSession ) ); |
|
1325 |
|
1326 TInt count(iListenerList.Count()); |
|
1327 TBool deleted( EFalse ); |
|
1328 |
|
1329 for ( TInt i=0; !deleted && i < count; i++ ) |
|
1330 { |
|
1331 if ( &iListenerList[i]->Session() == aSession ) |
|
1332 { |
|
1333 deleted = ETrue; |
|
1334 CSensrvChannelListener* ptr = iListenerList[i]; |
|
1335 if ( ptr == iCurrentSetPropertyControl ) |
|
1336 { |
|
1337 // Reset the property control |
|
1338 iCurrentSetPropertyControl = NULL; |
|
1339 } |
|
1340 if ( iHighestListenerPriorityMultiples > 0 && |
|
1341 ptr->Priority() == iHighestListenerPriority ) |
|
1342 { |
|
1343 // Update cached highest listener priority tracking |
|
1344 if ( !( --iHighestListenerPriorityMultiples ) ) |
|
1345 { |
|
1346 // Reset the highest priority when there are no multiples. |
|
1347 // Next GetHighestListenerPriority() call triggers complete priority check. |
|
1348 iHighestListenerPriority = KMinTInt; |
|
1349 } |
|
1350 } |
|
1351 delete ptr; |
|
1352 iListenerList.Remove(i); |
|
1353 } |
|
1354 } |
|
1355 |
|
1356 // If listener was not found, it is normally not an error, but in some cases it is interesting. |
|
1357 // -> Trace only regular COMPONENT_TRACE |
|
1358 if ( !deleted ) |
|
1359 { |
|
1360 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::DeleteListener - Listener not found" ) ) ); |
|
1361 } |
|
1362 |
|
1363 // Check if unload timer needs to be started, since there are no more clients |
|
1364 if (!iListenerList.Count()) |
|
1365 { |
|
1366 iProxy.StartUnloadTimerIfNeeded(); |
|
1367 } |
|
1368 |
|
1369 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::DeleteListener - return" ) ) ); |
|
1370 } |
|
1371 |
|
1372 // --------------------------------------------------------------------------- |
|
1373 // Finds a listener based on session |
|
1374 // --------------------------------------------------------------------------- |
|
1375 // |
|
1376 CSensrvChannelListener* CSensrvChannel::FindListener( CSensrvSession* aSession ) |
|
1377 { |
|
1378 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::FindListener(aSession: 0x%x)" ), aSession ) ); |
|
1379 |
|
1380 TInt count( iListenerList.Count() ); |
|
1381 CSensrvChannelListener* ptr( NULL ); |
|
1382 |
|
1383 if ( aSession ) |
|
1384 { |
|
1385 for ( TInt i=0; i < count; i++ ) |
|
1386 { |
|
1387 if ( &iListenerList[i]->Session() == aSession ) |
|
1388 { |
|
1389 ptr = iListenerList[ i ]; |
|
1390 break; |
|
1391 } |
|
1392 } |
|
1393 } |
|
1394 |
|
1395 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::FindListener - return" ) ) ); |
|
1396 |
|
1397 return ptr; |
|
1398 } |
|
1399 |
|
1400 // --------------------------------------------------------------------------- |
|
1401 // Closes the channel to SSY if there are no more listeners. |
|
1402 // --------------------------------------------------------------------------- |
|
1403 // |
|
1404 void CSensrvChannel::CloseIfNeeded() |
|
1405 { |
|
1406 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::CloseIfNeeded()" ) ) ); |
|
1407 |
|
1408 // Check listener count and state |
|
1409 if (iState == EChannelStateClosed) |
|
1410 { |
|
1411 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::CloseIfNeeded - Close NOT needed, channel already closed" ) ) ); |
|
1412 } |
|
1413 else |
|
1414 { |
|
1415 TInt err(KErrNone); |
|
1416 TInt count(iListenerList.Count()); |
|
1417 CSensrvTransaction* transaction = NULL; |
|
1418 |
|
1419 if (!count) |
|
1420 { |
|
1421 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::CloseIfNeeded - Close needed, no clients" ) ) ); |
|
1422 // Create internal close transaction and queue it |
|
1423 TRAP(err, transaction = CSensrvTransaction::NewL( |
|
1424 NULL, |
|
1425 &iProxy, |
|
1426 this, |
|
1427 CSensrvTransaction::ETransTypeCloseChannel)); |
|
1428 } |
|
1429 else if (iState == EChannelStateListening) |
|
1430 { |
|
1431 // Check if any of other clients are actually listening. If not, |
|
1432 // queue stop listening transaction |
|
1433 TBool activeFound(EFalse); |
|
1434 |
|
1435 for (TInt i=0; !activeFound && i < count; i++) |
|
1436 { |
|
1437 if ( iListenerList[i]->State() & CSensrvChannelListener::EChannelListenerStateConditionListening |
|
1438 || iListenerList[i]->State() & CSensrvChannelListener::EChannelListenerStateDataListening) |
|
1439 { |
|
1440 activeFound = ETrue; |
|
1441 } |
|
1442 } |
|
1443 |
|
1444 if (!activeFound) |
|
1445 { |
|
1446 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::CloseIfNeeded - Stop needed, no active clients" ) ) ); |
|
1447 TRAP(err, transaction = CSensrvTransaction::NewL( |
|
1448 NULL, |
|
1449 &iProxy, |
|
1450 this, |
|
1451 CSensrvTransaction::ETransTypeStopListening)); |
|
1452 } |
|
1453 else |
|
1454 { |
|
1455 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::CloseIfNeeded - Stop NOT needed, active client found" ) ) ); |
|
1456 } |
|
1457 } |
|
1458 else |
|
1459 { |
|
1460 // State open and some other clients, no need to do anything |
|
1461 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::CloseIfNeeded - Close NOT needed, channel open and other clients found " ) ) ); |
|
1462 } |
|
1463 |
|
1464 if ( (err == KErrNone) && (transaction) ) |
|
1465 { |
|
1466 // Queue transaction. If there is some open transaction queued before close, |
|
1467 // that is alright, close/stop will be ignored in transaction handling if state at |
|
1468 // that point is not suitable. |
|
1469 transaction->SetState(CSensrvTransaction::ETransStateQueued); |
|
1470 err = iChannelQueue->Add(transaction); |
|
1471 |
|
1472 if (err != KErrNone) |
|
1473 { |
|
1474 delete transaction; |
|
1475 transaction = NULL; |
|
1476 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::CloseIfNeeded - ERROR: Unable to queue close/stop transaction" ) ) ); |
|
1477 } |
|
1478 } |
|
1479 else |
|
1480 { |
|
1481 transaction = NULL; |
|
1482 } |
|
1483 } |
|
1484 |
|
1485 // Note that if there is an error creating/queueing transaction, channel will stay in incorrect state, |
|
1486 // but can't do anything about it. |
|
1487 |
|
1488 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::CloseIfNeeded - return" ) ) ); |
|
1489 } |
|
1490 |
|
1491 |
|
1492 // --------------------------------------------------------------------------- |
|
1493 // Handles start data and condition listening transactions |
|
1494 // --------------------------------------------------------------------------- |
|
1495 // |
|
1496 TInt CSensrvChannel::HandleStartListeningTransaction(CSensrvTransaction& aTransaction) |
|
1497 { |
|
1498 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleStartListeningTransaction()" ) ) ); |
|
1499 |
|
1500 TInt err(KErrNone); |
|
1501 |
|
1502 CSensrvChannelListener::TSensrvChannelListenerState targetState |
|
1503 (CSensrvChannelListener::EChannelListenerStateDataListening); |
|
1504 |
|
1505 if (aTransaction.Type() == CSensrvTransaction::ETransTypeStartConditionListening) |
|
1506 { |
|
1507 // Condition evaluator must exist |
|
1508 TRAP( err, ConditionEvaluatorL() ); |
|
1509 |
|
1510 targetState = CSensrvChannelListener::EChannelListenerStateConditionListening; |
|
1511 } |
|
1512 else // ETransTypeStartListening |
|
1513 { |
|
1514 // Target state already data listening |
|
1515 } |
|
1516 |
|
1517 if (err == KErrNone) |
|
1518 { |
|
1519 // Check that there is listener for this client session |
|
1520 CSensrvChannelListener* listener = GetListener(aTransaction.Session()); |
|
1521 |
|
1522 if (!listener) |
|
1523 { |
|
1524 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleStartListeningTransaction - ERROR: Listener doesn't exist." ) ) ); |
|
1525 err = KErrNotFound; |
|
1526 } |
|
1527 else if (listener->State() & targetState) |
|
1528 { |
|
1529 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleStartListeningTransaction - ERROR: Listener already listening." ) ) ); |
|
1530 err = KErrAlreadyExists; |
|
1531 } |
|
1532 else |
|
1533 { |
|
1534 // Create mediator transactions to be used in notifying data writes to buffer. |
|
1535 // These transactions are never deleted and are reused. |
|
1536 if (!iDataAvailableTransaction) |
|
1537 { |
|
1538 TRAP(err, iDataAvailableTransaction = CSensrvTransaction::NewL( |
|
1539 NULL, |
|
1540 &iProxy, |
|
1541 this, |
|
1542 CSensrvTransaction::ETransTypeMediatorNewDataAvailable)); |
|
1543 |
|
1544 if (err != KErrNone) |
|
1545 { |
|
1546 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleStartListeningTransaction - ERROR: ETransTypeMediatorNewDataAvailable transaction creation failed: %d" ), err ) ); |
|
1547 } |
|
1548 } |
|
1549 |
|
1550 if (err == KErrNone && !iForceBufferFilledTransaction) |
|
1551 { |
|
1552 TRAP(err, iForceBufferFilledTransaction = CSensrvTransaction::NewL( |
|
1553 NULL, |
|
1554 &iProxy, |
|
1555 this, |
|
1556 CSensrvTransaction::ETransTypeMediatorForceBufferFilled)); |
|
1557 |
|
1558 if (err != KErrNone) |
|
1559 { |
|
1560 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleStartListeningTransaction - ERROR: ETransTypeMediatorForceBufferFilled transaction creation failed: %d" ), err ) ); |
|
1561 } |
|
1562 } |
|
1563 |
|
1564 if (err == KErrNone && !iForceChannelCloseTransaction) |
|
1565 { |
|
1566 TRAP(err, iForceChannelCloseTransaction = CSensrvTransaction::NewL( |
|
1567 NULL, |
|
1568 &iProxy, |
|
1569 this, |
|
1570 CSensrvTransaction::ETransTypeMediatorForceChannelClose)); |
|
1571 |
|
1572 if (err != KErrNone) |
|
1573 { |
|
1574 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleStartListeningTransaction - ERROR: ETransTypeMediatorForceChannelClose transaction creation failed: %d" ), err ) ); |
|
1575 } |
|
1576 } |
|
1577 |
|
1578 if ( err == KErrNone ) |
|
1579 { |
|
1580 // Get buffering count and period from message |
|
1581 TSensrvStartListeningParametersPckgBuf pckg; |
|
1582 err = aTransaction.Message()->Read( KSensrvStartListeningParametersSlot, pckg ); |
|
1583 |
|
1584 if ( err == KErrNone ) |
|
1585 { |
|
1586 TSensrvStartListeningParameters startParams = pckg(); |
|
1587 |
|
1588 TSensrvResourceChannelInfo::TSensrvChannelGroup group = ChannelGroup(); |
|
1589 |
|
1590 if ( group == TSensrvResourceChannelInfo::ESensrvChannelGroupEvent |
|
1591 || group == TSensrvResourceChannelInfo::ESensrvChannelGroupState ) |
|
1592 { |
|
1593 startParams.iBufferingPeriod = 0; |
|
1594 } |
|
1595 |
|
1596 err = listener->StartListening( startParams.iDesiredBufferingCount, |
|
1597 startParams.iMaximumBufferingCount, |
|
1598 startParams.iBufferingPeriod, |
|
1599 targetState ); |
|
1600 if (err != KErrNone) |
|
1601 { |
|
1602 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleStartListeningTransaction - ERROR: Listener adding failed: %d" ), err ) ); |
|
1603 } |
|
1604 } |
|
1605 else |
|
1606 { |
|
1607 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleStartListeningTransaction - ERROR: Start parameters reading failed: %d" ), err ) ); |
|
1608 } |
|
1609 } |
|
1610 } |
|
1611 } |
|
1612 else |
|
1613 { |
|
1614 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleStartListeningTransaction - ERROR: Condition evaluator plugin loading failed: %d" ), err ) ); |
|
1615 } |
|
1616 |
|
1617 |
|
1618 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleStartListeningTransaction - return %d" ), err ) ); |
|
1619 |
|
1620 return err; |
|
1621 } |
|
1622 |
|
1623 // --------------------------------------------------------------------------- |
|
1624 // Handles stop data and condition listening transactions |
|
1625 // --------------------------------------------------------------------------- |
|
1626 // |
|
1627 TInt CSensrvChannel::HandleStopListeningTransaction(CSensrvTransaction& aTransaction, |
|
1628 TBool& aSsyTransactionNeeded) |
|
1629 { |
|
1630 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleStopListeningTransaction()" ) ) ); |
|
1631 |
|
1632 TInt err(KErrNone); |
|
1633 |
|
1634 CSensrvChannelListener::TSensrvChannelListenerState currentState |
|
1635 (CSensrvChannelListener::EChannelListenerStateDataListening); |
|
1636 |
|
1637 if (aTransaction.Type() == CSensrvTransaction::ETransTypeStopConditionListening) |
|
1638 { |
|
1639 currentState = CSensrvChannelListener::EChannelListenerStateConditionListening; |
|
1640 } |
|
1641 else // ETransTypeStartListening |
|
1642 { |
|
1643 // Target state already data listening |
|
1644 } |
|
1645 |
|
1646 // Check that there is listener for this client session |
|
1647 CSensrvChannelListener* listener = GetListener(aTransaction.Session()); |
|
1648 |
|
1649 if (listener && !(listener->State() & currentState)) |
|
1650 { |
|
1651 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleNextTransaction - ERROR: Listener not listening." ) ) ); |
|
1652 err = KErrNotFound; |
|
1653 } |
|
1654 else |
|
1655 { |
|
1656 if (listener) |
|
1657 { |
|
1658 listener->StopListening(currentState, ETrue); |
|
1659 } |
|
1660 |
|
1661 if (iState == EChannelStateOpen) |
|
1662 { |
|
1663 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleNextTransaction - ERROR: Channel not listening. Listener: 0x%x" ), listener ) ); |
|
1664 err = KErrNotFound; |
|
1665 } |
|
1666 else // iState == EChannelStateListening |
|
1667 { |
|
1668 // Check if there are any more active listeners |
|
1669 TInt count(iListenerList.Count()); |
|
1670 TBool activeFound(EFalse); |
|
1671 |
|
1672 for (TInt i=0; !activeFound && i < count; i++) |
|
1673 { |
|
1674 if ( iListenerList[i]->State() & CSensrvChannelListener::EChannelListenerStateConditionListening |
|
1675 || iListenerList[i]->State() & CSensrvChannelListener::EChannelListenerStateDataListening) |
|
1676 { |
|
1677 activeFound = ETrue; |
|
1678 } |
|
1679 } |
|
1680 |
|
1681 if (!activeFound) |
|
1682 { |
|
1683 // No active listeners remain, stop listening at SSY |
|
1684 aSsyTransactionNeeded = ETrue; |
|
1685 } |
|
1686 else |
|
1687 { |
|
1688 // At least one active listener remaining, do not stop listening at SSY |
|
1689 aSsyTransactionNeeded = EFalse; |
|
1690 } |
|
1691 } |
|
1692 } |
|
1693 |
|
1694 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleStartListeningTransaction - return %d" ), err ) ); |
|
1695 |
|
1696 return err; |
|
1697 } |
|
1698 |
|
1699 // --------------------------------------------------------------------------- |
|
1700 // CSensrvChannel::GetHighestListenerPriority() |
|
1701 // --------------------------------------------------------------------------- |
|
1702 // |
|
1703 TInt CSensrvChannel::GetHighestListenerPriority( TInt& aHighestPriority ) |
|
1704 { |
|
1705 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::GetHighestListenerPriority()" ) ) ); |
|
1706 |
|
1707 // Prefer the cached results if possible |
|
1708 if ( iHighestListenerPriorityMultiples <= 0 ) |
|
1709 { |
|
1710 // Search the highest priority and its multiples from this channel and cache the results |
|
1711 iHighestListenerPriorityMultiples = 0; |
|
1712 iHighestListenerPriority = KMinTInt; |
|
1713 TInt i( iListenerList.Count() ); |
|
1714 for( i--; i >= 0; i-- ) |
|
1715 { |
|
1716 CSensrvChannelListener* ptr = iListenerList[ i ]; |
|
1717 TInt priority( ptr->Priority() ); |
|
1718 if ( priority > iHighestListenerPriority ) |
|
1719 { |
|
1720 iHighestListenerPriority = priority; |
|
1721 iHighestListenerPriorityMultiples = 1; |
|
1722 } |
|
1723 else if ( priority == iHighestListenerPriority ) |
|
1724 { |
|
1725 iHighestListenerPriorityMultiples++; |
|
1726 } |
|
1727 } |
|
1728 } |
|
1729 |
|
1730 aHighestPriority = iHighestListenerPriority; |
|
1731 |
|
1732 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::GetHighestListenerPriority() - channel: %d priority: %d multiples: %d return" ), |
|
1733 iId, iHighestListenerPriority, iHighestListenerPriorityMultiples ) ); |
|
1734 |
|
1735 return iHighestListenerPriorityMultiples; |
|
1736 } |
|
1737 |
|
1738 // --------------------------------------------------------------------------- |
|
1739 // CSensrvChannel::GetLowestChannelPriority() |
|
1740 // --------------------------------------------------------------------------- |
|
1741 // |
|
1742 TInt CSensrvChannel::GetLowestChannelPriority( const RSensrvChannelList* aAffectedChannelsList, TSensrvChannelId& aChannelId ) |
|
1743 { |
|
1744 |
|
1745 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::GetLowestChannelPriority()" ) ) ); |
|
1746 |
|
1747 TInt lowestPriority( KMaxTInt ); |
|
1748 TInt newPriority( 0 ); |
|
1749 TInt multiplesOnChannel( 0 ); |
|
1750 |
|
1751 if ( aAffectedChannelsList ) |
|
1752 { |
|
1753 TInt i( aAffectedChannelsList->Count() ); |
|
1754 CSensrvChannel* channel = NULL; |
|
1755 for ( i--; i >= 0; i-- ) |
|
1756 { |
|
1757 if ( ( *aAffectedChannelsList )[ i ] != iId ) |
|
1758 { |
|
1759 channel = iProxy.GetChannelForId( ( *aAffectedChannelsList )[ i ] ); |
|
1760 if ( channel ) |
|
1761 { |
|
1762 multiplesOnChannel = channel->GetHighestListenerPriority( newPriority ); |
|
1763 if ( multiplesOnChannel > 0 ) |
|
1764 { |
|
1765 if ( newPriority < lowestPriority ) |
|
1766 { |
|
1767 lowestPriority = newPriority; |
|
1768 aChannelId = ( *aAffectedChannelsList )[ i ]; |
|
1769 } |
|
1770 } |
|
1771 } |
|
1772 } |
|
1773 } |
|
1774 } |
|
1775 |
|
1776 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::GetLowestChannelPriority() - channel %d priority: %d" ), aChannelId, lowestPriority ) ); |
|
1777 |
|
1778 return lowestPriority; |
|
1779 } |
|
1780 |
|
1781 // --------------------------------------------------------------------------- |
|
1782 // CSensrvChannel::GetHighestChannelPriority() |
|
1783 // --------------------------------------------------------------------------- |
|
1784 // |
|
1785 TInt CSensrvChannel::GetHighestChannelPriority( const RSensrvChannelList* aAffectedChannelsList, TSensrvChannelId& aChannelId ) |
|
1786 { |
|
1787 |
|
1788 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::GetHighestChannelPriority()" ) ) ); |
|
1789 |
|
1790 TInt highestPriority( KMinTInt ); |
|
1791 TInt newPriority( 0 ); |
|
1792 TInt multiplesOnChannel( 0 ); |
|
1793 |
|
1794 if ( aAffectedChannelsList ) |
|
1795 { |
|
1796 TInt i( aAffectedChannelsList->Count() ); |
|
1797 CSensrvChannel* channel = NULL; |
|
1798 for ( i--; i >= 0; i-- ) |
|
1799 { |
|
1800 if ( ( *aAffectedChannelsList )[ i ] != iId ) |
|
1801 { |
|
1802 channel = iProxy.GetChannelForId( ( *aAffectedChannelsList )[ i ] ); |
|
1803 if ( channel ) |
|
1804 { |
|
1805 multiplesOnChannel = channel->GetHighestListenerPriority( newPriority ); |
|
1806 if ( multiplesOnChannel > 0 ) |
|
1807 { |
|
1808 if ( newPriority > highestPriority ) |
|
1809 { |
|
1810 highestPriority = newPriority; |
|
1811 aChannelId = ( *aAffectedChannelsList )[ i ]; |
|
1812 } |
|
1813 } |
|
1814 } |
|
1815 } |
|
1816 } |
|
1817 } |
|
1818 |
|
1819 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::GetHighestChannelPriority() - channel %d priority: %d" ), aChannelId, highestPriority ) ); |
|
1820 |
|
1821 return highestPriority; |
|
1822 } |
|
1823 |
|
1824 // --------------------------------------------------------------------------- |
|
1825 // CSensrvChannel::GetHighestListenerPriorityOfAffectedChannels() |
|
1826 // --------------------------------------------------------------------------- |
|
1827 // |
|
1828 TInt CSensrvChannel::GetHighestListenerPriorityOfAffectedChannels( TInt& aHighestPriority ) |
|
1829 { |
|
1830 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::GetHighestListenerPriorityOfAffectedChannels()" ) ) ); |
|
1831 |
|
1832 // Search the highest priority and its multiples from all affected channels |
|
1833 RSensrvChannelList* affectedChannels = GetAffectedChannels(); |
|
1834 aHighestPriority = KMinTInt; |
|
1835 TInt multiples( 0 ); |
|
1836 if ( affectedChannels ) |
|
1837 { |
|
1838 TInt i( affectedChannels->Count() ); |
|
1839 TInt highestOfChannel( 0 ); |
|
1840 TInt multiplesOnChannel( 0 ); |
|
1841 CSensrvChannel* channel = NULL; |
|
1842 for ( i--; i >= 0; i-- ) |
|
1843 { |
|
1844 channel = iProxy.GetChannelForId( ( *affectedChannels )[ i ] ); |
|
1845 if ( channel ) |
|
1846 { |
|
1847 multiplesOnChannel = channel->GetHighestListenerPriority( highestOfChannel ); |
|
1848 if ( multiplesOnChannel > 0 ) |
|
1849 { |
|
1850 if ( highestOfChannel > aHighestPriority ) |
|
1851 { |
|
1852 aHighestPriority = highestOfChannel; |
|
1853 multiples = multiplesOnChannel; |
|
1854 } |
|
1855 else if ( highestOfChannel == aHighestPriority ) |
|
1856 { |
|
1857 multiples += multiplesOnChannel; |
|
1858 } |
|
1859 } |
|
1860 } |
|
1861 } |
|
1862 |
|
1863 affectedChannels->Reset(); |
|
1864 delete affectedChannels; |
|
1865 affectedChannels = NULL; |
|
1866 |
|
1867 } |
|
1868 |
|
1869 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::GetHighestListenerPriorityOfAffectedChannels() - priority: %d multiples: %d return" ), |
|
1870 aHighestPriority, multiples ) ); |
|
1871 |
|
1872 return multiples; |
|
1873 } |
|
1874 |
|
1875 // --------------------------------------------------------------------------- |
|
1876 // CSensrvChannel::UpdateSetPropertySuccessIndToChannelListeners() |
|
1877 // --------------------------------------------------------------------------- |
|
1878 // |
|
1879 void CSensrvChannel::UpdateSetPropertySuccessIndToChannelListeners( |
|
1880 CSensrvChannel& aChannel, TInt aHighestOfAffectedChannels, TInt aMultiplesOnAffectedChannels ) |
|
1881 { |
|
1882 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::UpdateSetPropertySuccessIndToChannelListeners()" ) ) ); |
|
1883 |
|
1884 TInt highestOfChannel( 0 ); |
|
1885 TInt multiplesOnChannel( aChannel.GetHighestListenerPriority( highestOfChannel ) ); |
|
1886 if ( multiplesOnChannel > 0 ) |
|
1887 { |
|
1888 if ( aChannel.iCurrentSetPropertyControl && |
|
1889 aChannel.iCurrentSetPropertyControl->Priority() < highestOfChannel ) |
|
1890 { |
|
1891 // Reset the property control due to higher priority listener |
|
1892 aChannel.iCurrentSetPropertyControl = NULL; |
|
1893 } |
|
1894 CSensrvChannelListener::TPropertySetSuccessEvaluationData evaluationData( |
|
1895 aHighestOfAffectedChannels, aMultiplesOnAffectedChannels, |
|
1896 highestOfChannel, multiplesOnChannel ); |
|
1897 TInt i( aChannel.iListenerList.Count() ); |
|
1898 for( i--; i >= 0; i-- ) |
|
1899 { |
|
1900 aChannel.iListenerList[ i ]->HandleSetPropertySuccessInd( evaluationData ); |
|
1901 } |
|
1902 } |
|
1903 |
|
1904 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::UpdateSetPropertySuccessIndToChannelListeners() - return" ) ) ); |
|
1905 } |
|
1906 |
|
1907 // --------------------------------------------------------------------------- |
|
1908 // CSensrvChannel::HandleSetPropertySuccessIndOnPropertyChange() |
|
1909 // --------------------------------------------------------------------------- |
|
1910 // |
|
1911 void CSensrvChannel::HandleSetPropertySuccessIndOnPropertyChange() |
|
1912 { |
|
1913 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleSetPropertySuccessIndOnPropertyChange()" ) ) ); |
|
1914 |
|
1915 TInt highestOfAffectedChannels( 0 ); |
|
1916 TInt multiplesOnAffectedChannels( GetHighestListenerPriorityOfAffectedChannels( highestOfAffectedChannels ) ); |
|
1917 |
|
1918 // Send the priority information for listener of this channel to be evaluated |
|
1919 UpdateSetPropertySuccessIndToChannelListeners( |
|
1920 *this, highestOfAffectedChannels, multiplesOnAffectedChannels ); |
|
1921 |
|
1922 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleSetPropertySuccessIndOnPropertyChange() - return" ) ) ); |
|
1923 } |
|
1924 |
|
1925 // --------------------------------------------------------------------------- |
|
1926 // CSensrvChannel::HandleSetPropertySuccessIndOnCreateOrDelete() |
|
1927 // --------------------------------------------------------------------------- |
|
1928 // |
|
1929 void CSensrvChannel::HandleSetPropertySuccessIndOnCreateOrDelete() |
|
1930 { |
|
1931 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleSetPropertySuccessIndOnCreateOrDelete()" ) ) ); |
|
1932 |
|
1933 // Get the priority information |
|
1934 RSensrvChannelList* affectedChannels = GetAffectedChannels(); |
|
1935 if ( affectedChannels ) |
|
1936 { |
|
1937 // Get the priority information |
|
1938 TInt highestOfAffectedChannels( 0 ); |
|
1939 TInt multiplesOnAffectedChannels( GetHighestListenerPriorityOfAffectedChannels( |
|
1940 highestOfAffectedChannels ) ); |
|
1941 |
|
1942 // Send the priority information for listeners of affected channels to be evaluated |
|
1943 TInt i( affectedChannels->Count() ); |
|
1944 for ( i--; i >= 0; i-- ) |
|
1945 { |
|
1946 CSensrvChannel* channel = iProxy.GetChannelForId( ( *affectedChannels )[ i ] ); |
|
1947 if ( channel ) |
|
1948 { |
|
1949 UpdateSetPropertySuccessIndToChannelListeners( |
|
1950 *channel, highestOfAffectedChannels, multiplesOnAffectedChannels ); |
|
1951 } |
|
1952 } |
|
1953 |
|
1954 affectedChannels->Reset(); |
|
1955 delete affectedChannels; |
|
1956 affectedChannels = NULL; |
|
1957 |
|
1958 } |
|
1959 |
|
1960 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleSetPropertySuccessIndOnCreateOrDelete() - return" ) ) ); |
|
1961 } |
|
1962 |
|
1963 // --------------------------------------------------------------------------- |
|
1964 // CSensrvChannel::TakePropertySetControl() |
|
1965 // --------------------------------------------------------------------------- |
|
1966 // |
|
1967 void CSensrvChannel::TakePropertySetControl( CSensrvChannelListener* aListener ) |
|
1968 { |
|
1969 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::TakePropertySetControl()" ) ) ); |
|
1970 |
|
1971 if ( iCurrentSetPropertyControl != aListener ) |
|
1972 { |
|
1973 if ( aListener ) |
|
1974 { |
|
1975 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::TakePropertySetControl() channel: %d listener: 0x%x priority: %d" ), |
|
1976 iId, aListener, aListener->Priority() ) ); |
|
1977 } |
|
1978 else |
|
1979 { |
|
1980 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::TakePropertySetControl() channel: %d listener: 0x%x" ), iId, aListener ) ); |
|
1981 } |
|
1982 iCurrentSetPropertyControl = aListener; |
|
1983 } |
|
1984 |
|
1985 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::TakePropertySetControl() - return" ) ) ); |
|
1986 } |
|
1987 |
|
1988 // --------------------------------------------------------------------------- |
|
1989 // CSensrvChannel::GetAffectedChannels() |
|
1990 // --------------------------------------------------------------------------- |
|
1991 // |
|
1992 RSensrvChannelList* CSensrvChannel::GetAffectedChannels() const |
|
1993 { |
|
1994 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::GetAffectedChannels()" ) ) ); |
|
1995 |
|
1996 RSensrvChannelList* ret = new RSensrvChannelList(); |
|
1997 |
|
1998 if ( iProxy.SsyMediator() && ret ) |
|
1999 { |
|
2000 iProxy.SsyMediator()->AffectedChannels( iId, iPropertyProvider, ret ); |
|
2001 } |
|
2002 |
|
2003 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::GetAffectedChannels() - return 0x%x" ), ret ) ); |
|
2004 return ret; |
|
2005 } |
|
2006 |
|
2007 // --------------------------------------------------------------------------- |
|
2008 // CSensrvChannel::GetAvailabilityAffectedChannels() |
|
2009 // --------------------------------------------------------------------------- |
|
2010 // |
|
2011 RSensrvChannelList* CSensrvChannel::GetAvailabilityAffectedChannels( TSensrvAvailability aValue ) const |
|
2012 { |
|
2013 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::GetAvailabilityAffectedChannels()" ) ) ); |
|
2014 |
|
2015 RSensrvChannelList* ret = new RSensrvChannelList(); |
|
2016 |
|
2017 if ( iProxy.SsyMediator() && ret ) |
|
2018 { |
|
2019 iProxy.SsyMediator()->AvailabilityAffectedChannels( iId, iPropertyProvider, ret, aValue ); |
|
2020 } |
|
2021 |
|
2022 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::GetAvailabilityAffectedChannels() - return 0x%x" ), ret ) ); |
|
2023 return ret; |
|
2024 } |
|
2025 |
|
2026 // --------------------------------------------------------------------------- |
|
2027 // CSensrvChannel::HandleDependencyOnOpen() |
|
2028 // --------------------------------------------------------------------------- |
|
2029 // |
|
2030 void CSensrvChannel::HandleDependencyOnOpen() |
|
2031 { |
|
2032 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleDependencyOnOpen() channel %d" ), iId ) ); |
|
2033 |
|
2034 TInt propErr( KErrNone ); //for property reading status |
|
2035 TSensrvProperty property( KSensrvPropIdAvailability, KSensrvItemIndexNone, 0 ); //for property |
|
2036 |
|
2037 TRAP( propErr, iPropertyProvider->GetPropertyL( iId, property ) ); //handle property reading error below |
|
2038 |
|
2039 if ( propErr == KErrNone ) |
|
2040 {//availability property read OK -> |
|
2041 TInt isAvailable( static_cast<TInt>( ESensrvAvailabilityFalse ) ); //for availability property value |
|
2042 |
|
2043 property.GetValue( isAvailable ); //get iId channel availability property |
|
2044 |
|
2045 if ( ESensrvAvailabilityFalse == ( static_cast<TSensrvAvailability>( isAvailable ) ) ) |
|
2046 {//current channel is not available, check if it needs to be set available -> |
|
2047 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleDependencyOnOpen - channel %d unavailable (%d)" ),iId, isAvailable ) ); |
|
2048 |
|
2049 RSensrvChannelList* affectedChannels = GetAvailabilityAffectedChannels( ESensrvAvailabilityTrue ); //get the affected channels |
|
2050 |
|
2051 if ( affectedChannels ) |
|
2052 {//affected channels returned a valid pointer -> |
|
2053 if ( affectedChannels->Count() ) |
|
2054 {//there are affected channels -> |
|
2055 TInt channelPriority( KMinTInt ); //for current channel priority |
|
2056 TInt othersPriority( KMinTInt ); //for other channel priority |
|
2057 TSensrvChannelId otherChannelId( 0 ); //for other channel channel id |
|
2058 |
|
2059 (void)GetHighestListenerPriority( channelPriority ); //get current channel highest priority, multiplicity value is not needed, thus cast'd to void |
|
2060 |
|
2061 othersPriority = GetLowestChannelPriority( affectedChannels, otherChannelId ); |
|
2062 |
|
2063 if ( channelPriority <= othersPriority ) |
|
2064 {//a higher priority client is blocking this channel -> |
|
2065 //current channel highest is not high enough! |
|
2066 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleDependencyOnOpen - channel %d priority (%d) is not high enough (vs. %d) to be enabled" ),iId, channelPriority, othersPriority ) ); |
|
2067 }//<- a higher priority client is blocking this channel |
|
2068 |
|
2069 else |
|
2070 {//this channel now has high enough priority user to enable and override another channel -> |
|
2071 //other has lower highest priority, disable it and enable this |
|
2072 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleDependencyOnOpen - channel %d priority (%d) is high enough (vs. %d)" ),iId, channelPriority, othersPriority ) ); |
|
2073 |
|
2074 (void)SetChannelAvailability( iId /*<- to enable*/, otherChannelId /* <- to disable */, property ); |
|
2075 }//<- this channel has now high enough priority user to enable and override another channel |
|
2076 }//<-there are affected channels |
|
2077 else |
|
2078 {// no affected channels in list -> |
|
2079 (void)SetChannelAvailability( iId /*<- to enable*/, property, ESensrvAvailabilityTrue ); |
|
2080 } // <- no affected channels |
|
2081 |
|
2082 affectedChannels->Reset(); |
|
2083 delete affectedChannels; |
|
2084 affectedChannels = NULL; |
|
2085 |
|
2086 }//<- affected channels returned a valid pointer |
|
2087 }//<- current channel is not available, check if it needs to be set available |
|
2088 else |
|
2089 {//Current channel is available -> |
|
2090 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleDependencyOnOpen - channel %d already available (%d) or no affected channels" ),iId, isAvailable ) ); |
|
2091 }//<- Current channel is available |
|
2092 }//<- availability property read OK |
|
2093 else |
|
2094 { |
|
2095 //Error reading property |
|
2096 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleDependencyOnOpen - ERROR: Unable to get property Error: %d" ), propErr ) ); |
|
2097 } |
|
2098 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleDependencyOnOpen - return" ) ) ); |
|
2099 } |
|
2100 |
|
2101 // --------------------------------------------------------------------------- |
|
2102 // CSensrvChannel::HandleDependencyOnClose() |
|
2103 // --------------------------------------------------------------------------- |
|
2104 // |
|
2105 void CSensrvChannel::HandleDependencyOnClose( const TInt &aPriority ) |
|
2106 { |
|
2107 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleDependencyOnClose() channel %d" ), iId ) ); |
|
2108 |
|
2109 TInt propErr( KErrNone ); |
|
2110 |
|
2111 TSensrvProperty property( KSensrvPropIdAvailability, KSensrvItemIndexNone, 0 ); |
|
2112 |
|
2113 TRAP( propErr, iPropertyProvider->GetPropertyL( iId, property ) ); //get availability property for current channel |
|
2114 |
|
2115 if ( propErr == KErrNone ) |
|
2116 {//availability property read OK -> |
|
2117 |
|
2118 TInt isAvailable( static_cast<TInt>( ESensrvAvailabilityFalse ) ); //for availability property value |
|
2119 |
|
2120 property.GetValue( isAvailable ); //get iId channel availability property |
|
2121 |
|
2122 if ( ESensrvAvailabilityTrue == ( static_cast<TSensrvAvailability>( isAvailable ) ) ) |
|
2123 {//Current channel is available, check if it needs to be set unavailable -> |
|
2124 |
|
2125 RSensrvChannelList* affectedChannels = GetAvailabilityAffectedChannels( ESensrvAvailabilityFalse ); |
|
2126 |
|
2127 if ( affectedChannels ) |
|
2128 {//affected channels returned a valid pointer -> |
|
2129 if ( affectedChannels->Count() ) |
|
2130 {//there are affected channels -> |
|
2131 TInt channelPriority( KMinTInt ); //for current channel priority |
|
2132 TInt othersPriority( KMinTInt ); //for other channel priority |
|
2133 TSensrvChannelId otherChannelId( 0 ); //for other channel channel id |
|
2134 |
|
2135 (void)GetHighestListenerPriority( channelPriority ); //get current channel highest priority, multiplicity value is not needed, thus cast'd to void |
|
2136 |
|
2137 if ( channelPriority >= aPriority ) |
|
2138 {//current channel has remaining listener(s) with a higher priority than listener that just left -> |
|
2139 //do nuthin', only highest priority / channel matters |
|
2140 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleDependencyOnClose - current channel has highest or equal priority" ) ) ); |
|
2141 }//<- current channel has remaining listener(s) with a higher priority than listener that just left |
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2142 else if ( 0 < ListenerCount() ) |
|
2143 {//highest priority listener of the channel left, other listeners exist -> |
|
2144 |
|
2145 othersPriority = GetHighestChannelPriority( affectedChannels, otherChannelId ); |
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2146 |
|
2147 if ( channelPriority < othersPriority ) |
|
2148 {//an unavailable channel has a higher priority listener than current channel -> |
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2149 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleDependencyOnClose - channel %d priority is high enough (%d) vs. current channel %d (%d)" ), |
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2150 otherChannelId, othersPriority, iId, channelPriority ) ); |
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2151 |
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2152 (void)SetChannelAvailability( otherChannelId /* <- to enable */, iId /* <- to disable */, property ); |
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2153 }//<- an unavailable channel has a higher priority listener than current channel |
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2154 else |
|
2155 {//an unavailable channel does not have a higher priority listener than current channel -> |
|
2156 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleDependencyOnClose - other channel %d priority is not high enough (%d) vs. current channel %d (%d)" ), |
|
2157 otherChannelId, othersPriority, iId, channelPriority ) ); |
|
2158 }//<- an unavailable channel does not have a higher priority listener than current channel |
|
2159 }//<- highest priority listener of the channel left, other listeners exist |
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2160 else |
|
2161 {//highest priority of the channel closed, no other listeners exist -> |
|
2162 othersPriority = GetHighestChannelPriority( affectedChannels, otherChannelId ); |
|
2163 |
|
2164 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleDependencyOnClose - channel %d has no more listeners, enabling channel %d" ),iId, otherChannelId ) ); |
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2165 |
|
2166 (void)SetChannelAvailability( otherChannelId /* <- to enable */, iId /* <- to disable */, property ); |
|
2167 } //<- highest priority of the channel closed, no other listeners exist |
|
2168 }//<- there are affected channels |
|
2169 |
|
2170 affectedChannels->Reset(); |
|
2171 delete affectedChannels; |
|
2172 affectedChannels = NULL; |
|
2173 |
|
2174 }//<- affected channels returned a valid pointer |
|
2175 }//<- Current channel is available, check if it needs to be set unavailable |
|
2176 else |
|
2177 {//not available -> |
|
2178 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleDependencyOnClose - channel not available (%d) or no affected channels" ), isAvailable ) ); |
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2179 }//<- not available |
|
2180 }//<- availability property read OK |
|
2181 else |
|
2182 { |
|
2183 //Error reading property |
|
2184 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleDependencyOnClose - ERROR: Unable to get property Error: %d" ), propErr ) ); |
|
2185 } |
|
2186 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::HandleDependencyOnClose - return" ) ) ); |
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2187 } |
|
2188 |
|
2189 // --------------------------------------------------------------------------- |
|
2190 // CSensrvChannel::SetAvailability() |
|
2191 // --------------------------------------------------------------------------- |
|
2192 // |
|
2193 TInt CSensrvChannel::SetAvailability( TSensrvChannelId aChannelId, TSensrvProperty& aProperty, TSensrvAvailability aValue, const TSecurityInfo& aSecurityInfo ) |
|
2194 { |
|
2195 TInt propErr( KErrNone ); |
|
2196 |
|
2197 aProperty.SetValue( static_cast<TInt>( aValue ) ); |
|
2198 aProperty.SetSecurityInfo( aSecurityInfo ); |
|
2199 |
|
2200 TRAP( propErr, iPropertyProvider->SetPropertyL( aChannelId, aProperty ) ); |
|
2201 |
|
2202 if ( propErr == KErrNone ) |
|
2203 { |
|
2204 //property set ok |
|
2205 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::SetAvailability - Channel %d property set to %d OK" ), aChannelId, aValue ) ); |
|
2206 } |
|
2207 else |
|
2208 { |
|
2209 //handle property error |
|
2210 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::SetAvailability - ERROR: Unable to set property for dependent channel - Error: %d" ), propErr ) ); |
|
2211 } |
|
2212 |
|
2213 return propErr; |
|
2214 } |
|
2215 |
|
2216 // --------------------------------------------------------------------------- |
|
2217 // CSensrvChannel::SetChannelAvailability() |
|
2218 // --------------------------------------------------------------------------- |
|
2219 // |
|
2220 TInt CSensrvChannel::SetChannelAvailability( TSensrvChannelId aChannelIdToEnable, TSensrvChannelId aChannelIdToDisable, TSensrvProperty& aProperty ) |
|
2221 { |
|
2222 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::SetChannelAvailability" ) ) ); |
|
2223 |
|
2224 TInt status ( KErrNone ); |
|
2225 TSecurityInfo securityInfo; |
|
2226 |
|
2227 securityInfo.SetToCurrentInfo(); |
|
2228 |
|
2229 status = SetAvailability( aChannelIdToDisable, aProperty, ESensrvAvailabilityFalse, securityInfo ); |
|
2230 |
|
2231 if ( KErrNone == status ) |
|
2232 { |
|
2233 status = SetAvailability( aChannelIdToEnable, aProperty, ESensrvAvailabilityTrue, securityInfo ); |
|
2234 |
|
2235 if ( KErrNone != status ) |
|
2236 { |
|
2237 //Handle error |
|
2238 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::SetChannelAvailability - ERROR: Unable to set channel %d to available - Error: %d" ), aChannelIdToEnable, status ) ); |
|
2239 |
|
2240 //rewind |
|
2241 (void)SetAvailability( aChannelIdToDisable, aProperty, ESensrvAvailabilityTrue, securityInfo ); |
|
2242 } |
|
2243 } |
|
2244 else |
|
2245 { |
|
2246 //Handle error |
|
2247 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::SetChannelAvailability - ERROR: Unable to set channel %d to unavailable - Error: %d" ), aChannelIdToDisable, status ) ); |
|
2248 //nothing to rewind |
|
2249 } |
|
2250 |
|
2251 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::SetChannelAvailability() - return %d" ), status ) ); |
|
2252 |
|
2253 return status; |
|
2254 } |
|
2255 |
|
2256 // --------------------------------------------------------------------------- |
|
2257 // CSensrvChannel::SetChannelAvailable() |
|
2258 // --------------------------------------------------------------------------- |
|
2259 // |
|
2260 TInt CSensrvChannel::SetChannelAvailability( TSensrvChannelId aChannelId, TSensrvProperty& aProperty, TSensrvAvailability aValue ) |
|
2261 { |
|
2262 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::SetChannelAvailability" ) ) ); |
|
2263 |
|
2264 TInt status ( KErrNone ); |
|
2265 TSecurityInfo securityInfo; |
|
2266 |
|
2267 securityInfo.SetToCurrentInfo(); |
|
2268 |
|
2269 status = SetAvailability( aChannelId, aProperty, aValue, securityInfo ); |
|
2270 if ( KErrNone != status ) |
|
2271 { |
|
2272 //Handle error |
|
2273 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::SetChannelAvailability - ERROR: Unable to set channel %d to %d - Error: %d" ), aChannelId, aValue, status ) ); |
|
2274 } |
|
2275 |
|
2276 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::SetChannelAvailability() - return %d" ), status ) ); |
|
2277 |
|
2278 return status; |
|
2279 } |
|
2280 |
|
2281 // --------------------------------------------------------------------------- |
|
2282 // Reads channel group |
|
2283 // --------------------------------------------------------------------------- |
|
2284 // |
|
2285 TSensrvResourceChannelInfo::TSensrvChannelGroup CSensrvChannel::ReadChannelGroup() |
|
2286 { |
|
2287 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::ReadChannelGroup()" ) ) ); |
|
2288 |
|
2289 // Use not defined as default if not defined or read fails |
|
2290 TInt channelGroup( TSensrvResourceChannelInfo::ESensrvChannelGroupNotDefined ); |
|
2291 TInt err( KErrNone ); |
|
2292 |
|
2293 // Open channel group repository and get necessary values |
|
2294 CRepository* repository = NULL; |
|
2295 TRAP( err, repository = CRepository::NewL( KCRUidSensorServerChannelGroups ) ); |
|
2296 if ( err == KErrNone ) |
|
2297 { |
|
2298 err = repository->Get( iChannelInfo.iChannelType, channelGroup ); |
|
2299 if ( err != KErrNone || channelGroup < TSensrvResourceChannelInfo::ESensrvChannelGroupNotDefined ) |
|
2300 { |
|
2301 channelGroup = TSensrvResourceChannelInfo::ESensrvChannelGroupNotDefined; |
|
2302 } |
|
2303 } |
|
2304 else |
|
2305 { |
|
2306 ERROR_TRACE( ( _L( "Sensor Server - CSensrvChannel::ReadChannelGroup - Channel groups repository opening failed: %d" ), err ) ); |
|
2307 } |
|
2308 |
|
2309 // Cleanup repository |
|
2310 delete repository; |
|
2311 repository = NULL; |
|
2312 |
|
2313 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::ReadChannelGroup() - return %d" ), channelGroup ) ); |
|
2314 |
|
2315 return static_cast< TSensrvResourceChannelInfo::TSensrvChannelGroup >( channelGroup ); |
|
2316 } |
|
2317 |
|
2318 // --------------------------------------------------------------------------- |
|
2319 // Gets channel group |
|
2320 // --------------------------------------------------------------------------- |
|
2321 // |
|
2322 TSensrvResourceChannelInfo::TSensrvChannelGroup CSensrvChannel::ChannelGroup() |
|
2323 { |
|
2324 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::ChannelGroup()" ) ) ); |
|
2325 |
|
2326 if ( iChannelInfo.iChannelGroup == TSensrvResourceChannelInfo::ESensrvChannelGroupNotSolved ) |
|
2327 { |
|
2328 iChannelInfo.iChannelGroup = ReadChannelGroup(); |
|
2329 } |
|
2330 |
|
2331 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvChannel::ChannelGroup() - return %d" ), iChannelInfo.iChannelGroup ) ); |
|
2332 |
|
2333 return iChannelInfo.iChannelGroup; |
|
2334 } |