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1 /* |
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2 * Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Sensor server transaction queue. |
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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 "sensrvdefines.h" |
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21 #include "sensrvtransactionqueue.h" |
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22 #include "sensrvtransaction.h" |
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23 #include "sensrvsession.h" |
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24 |
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25 // --------------------------------------------------------------------------- |
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26 // 2-phase constructor |
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27 // --------------------------------------------------------------------------- |
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28 // |
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29 CSensrvTransactionQueue* CSensrvTransactionQueue::NewL(TBool aOwned) |
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30 { |
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31 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::NewL()" ) ) ); |
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32 |
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33 CSensrvTransactionQueue* self = new( ELeave ) CSensrvTransactionQueue(aOwned); |
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34 CleanupStack::PushL(self); |
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35 self->ConstructL(); |
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36 CleanupStack::Pop(self); |
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37 |
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38 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::NewL - return 0x%x" ), self ) ); |
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39 |
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40 return self; |
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41 } |
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42 |
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43 // --------------------------------------------------------------------------- |
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44 // C++ constructor |
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45 // --------------------------------------------------------------------------- |
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46 // |
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47 CSensrvTransactionQueue::CSensrvTransactionQueue(TBool aOwned) |
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48 : iTransactionPtrList(_FOFF(TLinkableTransactionPtr,iLink)), |
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49 iTransactionPtrIter(iTransactionPtrList), |
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50 iOwned(aOwned) |
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51 { |
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52 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::CSensrvTransactionQueue()" ) ) ); |
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53 |
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54 // Nothing to do |
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55 |
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56 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::CSensrvTransactionQueue - return" ) ) ); |
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57 } |
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58 |
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59 // --------------------------------------------------------------------------- |
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60 // 2nd phase of construction |
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61 // --------------------------------------------------------------------------- |
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62 // |
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63 void CSensrvTransactionQueue::ConstructL() |
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64 { |
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65 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::ConstructL()" ) ) ); |
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66 |
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67 iHeap = &User::Heap(); |
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68 |
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69 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::ConstructL - return" ) ) ); |
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70 } |
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71 |
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72 |
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73 // --------------------------------------------------------------------------- |
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74 // Destructor |
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75 // --------------------------------------------------------------------------- |
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76 // |
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77 CSensrvTransactionQueue::~CSensrvTransactionQueue() |
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78 { |
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79 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::~CSensrvTransactionQueue()" ) ) ); |
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80 |
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81 TLinkableTransactionPtr* ptr = NULL; |
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82 |
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83 while (!iTransactionPtrList.IsEmpty()) |
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84 { |
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85 ptr = iTransactionPtrList.First(); |
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86 iTransactionPtrList.Remove(*ptr); |
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87 CSensrvTransaction* transaction = ptr->iTransaction; |
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88 |
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89 // If transactions are owned, they are all deleted. |
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90 if (iOwned) |
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91 { |
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92 transaction->SetErrorCode(KErrCancel); |
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93 transaction->Complete(); |
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94 // Transactions are always created in same heap as queue with regular new, |
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95 // so regular delete is ok |
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96 delete transaction; |
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97 } |
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98 |
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99 // Pointers are allocated directly on heap, so free them directly also just to be on safe side. |
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100 if (iHeap) |
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101 { |
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102 iHeap->Free(ptr); |
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103 } |
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104 } |
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105 |
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106 // Reset to clear memory used by the list |
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107 iTransactionPtrList.Reset(); |
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108 |
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109 // iHeap is not owned |
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110 |
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111 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::~CSensrvTransactionQueue - return" ) ) ); |
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112 } |
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113 |
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114 |
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115 // --------------------------------------------------------------------------- |
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116 // Adds transaction to the end of the queue |
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117 // --------------------------------------------------------------------------- |
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118 // |
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119 TInt CSensrvTransactionQueue::Add(CSensrvTransaction* aTransaction, TBool aLast) |
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120 { |
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121 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::Add(aTransaction: 0x%x, aLast: %d)" ), aTransaction, aLast ) ); |
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122 |
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123 TInt err(KErrNone); |
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124 |
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125 if (aTransaction) |
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126 { |
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127 // Allocate linkable transaction pointer in same heap as queue |
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128 TLinkableTransactionPtr* newPtr = reinterpret_cast<TLinkableTransactionPtr*>(iHeap->Alloc(sizeof(TLinkableTransactionPtr))); |
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129 |
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130 if (newPtr) |
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131 { |
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132 newPtr->iTransaction = aTransaction; |
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133 if (aLast) |
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134 { |
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135 iTransactionPtrList.AddLast(*newPtr); |
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136 } |
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137 else |
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138 { |
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139 iTransactionPtrList.AddFirst(*newPtr); |
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140 } |
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141 } |
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142 else |
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143 { |
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144 ERROR_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::Add - ERROR: No memory to add item" ) ) ); |
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145 err = KErrNoMemory; |
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146 } |
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147 } |
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148 else |
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149 { |
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150 ERROR_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::Add - ERROR: Attempted to add NULL transaction" ) ) ); |
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151 err = KErrArgument; |
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152 } |
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153 |
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154 #ifdef MEMORY_TRACE_DEBUG |
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155 TInt count(0); |
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156 if (!iTransactionPtrList.IsEmpty()) |
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157 { |
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158 TLinkableTransactionPtr* ptr = NULL; |
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159 iTransactionPtrIter.SetToFirst(); |
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160 while ((ptr = iTransactionPtrIter++) != NULL) |
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161 { |
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162 count++; |
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163 // Do not print the entire queue if it has many items. |
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164 if (count < 5) |
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165 { |
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166 MEMORY_TRACE( ( _L( "@TT: %d" ), ptr->iTransaction->Type() ) ); |
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167 } |
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168 else if (count == 5) |
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169 { |
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170 MEMORY_TRACE( ( _L( "@..." ) ) ); |
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171 } |
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172 }; |
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173 } |
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174 MEMORY_TRACE( ( _L( "@Queue count %d" ), count ) ); |
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175 #endif |
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176 |
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177 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::Add - return %d" ), err ) ); |
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178 |
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179 return err; |
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180 } |
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181 |
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182 // --------------------------------------------------------------------------- |
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183 // Remove transaction from queue |
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184 // --------------------------------------------------------------------------- |
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185 // |
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186 void CSensrvTransactionQueue::Remove(CSensrvTransaction* aTransaction, |
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187 TRemovalType aRemovalType) |
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188 { |
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189 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::Remove(aTransaction: 0x%x, %d)" ), aTransaction, aRemovalType ) ); |
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190 |
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191 if (aTransaction) |
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192 { |
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193 TLinkableTransactionPtr* ptr = FindTransactionPtr(aTransaction); |
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194 |
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195 if (ptr) |
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196 { |
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197 RemovePtr(ptr, aRemovalType); |
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198 } |
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199 else |
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200 { |
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201 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::Remove - Attempted to remove nonexisting transaction" ) ) ); |
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202 } |
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203 } |
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204 else |
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205 { |
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206 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::Remove - Attempted to remove NULL transaction" ) ) ); |
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207 } |
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208 } |
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209 |
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210 // --------------------------------------------------------------------------- |
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211 // Remove all of session's transactions from queue. |
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212 // --------------------------------------------------------------------------- |
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213 // |
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214 void CSensrvTransactionQueue::Remove(CSensrvSession* aSession) |
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215 { |
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216 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::Remove(aSession: 0x%x)" ), aSession ) ); |
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217 |
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218 if (aSession) |
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219 { |
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220 TLinkableTransactionPtr* ptr = NULL; |
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221 iTransactionPtrIter.SetToFirst(); |
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222 while ((ptr = iTransactionPtrIter++) != NULL) |
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223 { |
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224 if ( ptr->iTransaction->Message() ) |
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225 { |
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226 if (ptr->iTransaction->Message()->Session() == aSession) |
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227 { |
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228 RemovePtr(ptr, ERemovalTypeCancel); |
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229 } |
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230 } |
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231 }; |
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232 } |
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233 else |
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234 { |
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235 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::Remove - Attempted to remove transactions for NULL session" ) ) ); |
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236 } |
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237 } |
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238 |
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239 // --------------------------------------------------------------------------- |
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240 // Remove all obsolete transactions from queue |
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241 // --------------------------------------------------------------------------- |
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242 // |
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243 TInt CSensrvTransactionQueue::RemoveObsolete(const TTime& aCutoffTime) |
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244 { |
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245 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::RemoveObsolete(aCutoffTime: %LD)" ), aCutoffTime.Int64() ) ); |
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246 |
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247 TInt count(0); |
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248 TLinkableTransactionPtr* ptr = NULL; |
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249 iTransactionPtrIter.SetToFirst(); |
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250 while ((ptr = iTransactionPtrIter++) != NULL) |
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251 { |
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252 if ( ptr->iTransaction->TimeStamp() <= aCutoffTime ) |
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253 { |
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254 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::RemoveObsolete - Removing obsolete transaction: 0x%x" ), ptr->iTransaction) ); |
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255 |
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256 count++; |
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257 |
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258 RemovePtr(ptr, ERemovalTypeCancel); |
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259 } |
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260 }; |
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261 |
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262 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::RemoveObsolete - return %d" ), count ) ); |
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263 |
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264 return count; |
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265 } |
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266 |
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267 // --------------------------------------------------------------------------- |
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268 // Remove all transactions from queue |
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269 // --------------------------------------------------------------------------- |
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270 // |
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271 void CSensrvTransactionQueue::RemoveAll() |
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272 { |
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273 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::RemoveAll()" ) ) ); |
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274 |
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275 TLinkableTransactionPtr* ptr = NULL; |
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276 iTransactionPtrIter.SetToFirst(); |
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277 while ((ptr = iTransactionPtrIter++) != NULL) |
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278 { |
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279 RemovePtr(ptr, ERemovalTypeCancel); |
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280 }; |
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281 } |
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282 |
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283 |
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284 // --------------------------------------------------------------------------- |
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285 // Gets pointer to first transaction in queue. |
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286 // --------------------------------------------------------------------------- |
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287 // |
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288 CSensrvTransaction* CSensrvTransactionQueue::First() |
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289 { |
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290 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::First()" ) ) ); |
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291 |
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292 CSensrvTransaction* retval = NULL; |
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293 |
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294 if (!iTransactionPtrList.IsEmpty()) |
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295 { |
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296 retval = iTransactionPtrList.First()->iTransaction; |
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297 } |
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298 |
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299 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::First - return 0x%x" ), retval ) ); |
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300 |
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301 return retval; |
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302 } |
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303 |
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304 |
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305 // --------------------------------------------------------------------------- |
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306 // Finds the queue item which contains pointer to specified transaction. |
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307 // --------------------------------------------------------------------------- |
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308 // |
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309 CSensrvTransactionQueue::TLinkableTransactionPtr* CSensrvTransactionQueue::FindTransactionPtr(CSensrvTransaction* aTransaction) |
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310 { |
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311 TLinkableTransactionPtr* ptr = NULL; |
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312 |
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313 if (aTransaction) |
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314 { |
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315 TBool found(EFalse); |
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316 |
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317 iTransactionPtrIter.SetToFirst(); |
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318 while (!found && (ptr = iTransactionPtrIter++) != NULL ) |
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319 { |
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320 if ( ptr->iTransaction == aTransaction ) |
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321 { |
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322 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::FindTransactionPtr - Pointer found" ) ) ); |
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323 found = ETrue; |
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324 } |
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325 }; |
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326 |
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327 if (!found) |
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328 { |
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329 ptr = NULL; |
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330 } |
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331 } |
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332 else |
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333 { |
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334 COMPONENT_TRACE( ( _L( "Sensor Server - CSensrvTransactionQueue::FindTransactionPtr - Pointer not found" ) ) ); |
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335 } |
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336 |
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337 return ptr; |
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338 } |
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339 |
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340 // --------------------------------------------------------------------------- |
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341 // Removes linkable pointer object from queue. |
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342 // --------------------------------------------------------------------------- |
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343 // |
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344 void CSensrvTransactionQueue::RemovePtr(TLinkableTransactionPtr* aPtr, TRemovalType aRemovalType) |
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345 { |
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346 if (aPtr) |
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347 { |
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348 if (iOwned && aRemovalType != ERemovalTypeTransfer) |
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349 { |
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350 __ASSERT_ALWAYS(aRemovalType != ERemovalTypeUndefined, User::Panic(KSensrvPanicCategory, ESensrvPanicInvalidRemoveType)); |
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351 |
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352 if (aRemovalType == ERemovalTypeCancel) |
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353 { |
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354 aPtr->iTransaction->SetErrorCode(KErrCancel); |
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355 } |
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356 aPtr->iTransaction->Complete(); |
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357 // Owned queues are always owned by server main thread and transactions are |
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358 // only removed from those queues within server main thread, |
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359 // so regular delete is ok. |
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360 delete aPtr->iTransaction; |
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361 } |
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362 |
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363 iTransactionPtrList.Remove(*aPtr); |
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364 iHeap->Free(aPtr); |
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365 aPtr = NULL; |
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366 } |
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367 } |
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368 |