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1 // Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // System includes |
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15 // |
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16 // |
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17 |
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18 // Local includes |
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19 #include "cnwsswsptrhnddatasupplier.h" |
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20 #include "tnwsswsptrhndpanic.h" |
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21 |
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22 // Class signature |
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23 #include "cnwsstranslookuptable.h" |
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24 |
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25 |
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26 |
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27 CNwssTransLookUpTable::CNwssTransLUTEntry* CNwssTransLookUpTable::CNwssTransLUTEntry::NewL() |
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28 { |
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29 return new(ELeave) CNwssTransLookUpTable::CNwssTransLUTEntry; |
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30 } |
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31 |
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32 CNwssTransLookUpTable::CNwssTransLUTEntry::CNwssTransLUTEntry() |
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33 { |
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34 } |
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35 |
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36 CNwssTransLookUpTable::CNwssTransLUTEntry::~CNwssTransLUTEntry() |
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37 { |
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38 delete iResponseBodyHandler; |
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39 } |
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40 |
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41 CNwssTransLookUpTable* CNwssTransLookUpTable::NewL(TInt aTableSize) |
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42 { |
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43 CNwssTransLookUpTable* me = new(ELeave)CNwssTransLookUpTable(); |
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44 CleanupStack::PushL(me); |
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45 me->ConstructL(aTableSize); |
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46 CleanupStack::Pop(me); |
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47 return me; |
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48 } |
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49 |
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50 CNwssTransLookUpTable::CNwssTransLookUpTable() |
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51 { |
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52 } |
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53 |
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54 CNwssTransLookUpTable::~CNwssTransLookUpTable() |
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55 { |
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56 // Flush the look-up table. Entries which are unused will delete OK since |
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57 // when removed, their iResponseBodyHandler pointer is reset to NULL. |
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58 iEntries.ResetAndDestroy(); |
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59 } |
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60 |
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61 CNwssTransLookUpTable::CNwssTransLUTEntry& CNwssTransLookUpTable::NewEntry() |
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62 { |
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63 TInt numTableEntries = iEntries.Count(); |
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64 #ifdef __UNIT_TESTING__ |
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65 if (numTableEntries == 0) |
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66 // dummy return for testing only |
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67 return *(REINTERPRET_CAST(CNwssTransLookUpTable::CNwssTransLUTEntry*, 1)); |
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68 #endif |
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69 __ASSERT_DEBUG(numTableEntries > 0, User::Invariant()); |
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70 |
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71 CNwssTransLookUpTable::CNwssTransLUTEntry* retVal = NULL; |
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72 if (iNumActiveLUTEntries < numTableEntries) |
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73 retVal = iEntries[iNumActiveLUTEntries++]; |
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74 #ifdef __UNIT_TESTING__ |
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75 else |
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76 // dummy return for testing only |
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77 return *(REINTERPRET_CAST(CNwssTransLookUpTable::CNwssTransLUTEntry*, 1)); |
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78 #else |
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79 else |
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80 TNwssWspTrHndPanic::Panic(TNwssWspTrHndPanic::ETransLUTOverflow); |
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81 #endif |
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82 return *retVal; |
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83 } |
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84 |
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85 CNwssTransLookUpTable::CNwssTransLUTEntry& |
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86 CNwssTransLookUpTable::LookUpByTransId(RWSPCOTrans::TTransID aTransId, TBool& aFound) |
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87 { |
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88 // Iterate the look-up-table until we find the entry whose transaction ID matches |
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89 // the supplied value |
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90 aFound = EFalse; |
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91 TInt idx = 0; |
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92 while (!aFound && (idx < iNumActiveLUTEntries)) |
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93 { |
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94 if (iEntries[idx]->iStackTransID == aTransId) |
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95 aFound = ETrue; |
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96 else |
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97 ++idx; |
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98 } |
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99 if (aFound) |
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100 return *(iEntries[idx]); |
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101 |
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102 // dummy return |
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103 CNwssTransLookUpTable::CNwssTransLUTEntry* retVal = NULL; |
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104 return *retVal; |
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105 } |
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106 |
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107 CNwssTransLookUpTable::CNwssTransLUTEntry& |
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108 CNwssTransLookUpTable::LookUpByCallback(MWspCOMethodCallback& aCallback, TBool& aFound) |
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109 { |
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110 // Locate the item in the table |
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111 aFound = EFalse; |
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112 TInt unused = KErrNotFound; |
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113 CNwssTransLookUpTable::CNwssTransLUTEntry* lutEntry = LookUp(aCallback, unused); |
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114 if (lutEntry) |
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115 { |
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116 aFound = ETrue; |
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117 return *lutEntry; |
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118 } |
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119 |
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120 // dummy return |
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121 CNwssTransLookUpTable::CNwssTransLUTEntry* retVal = NULL; |
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122 return *retVal; |
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123 } |
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124 |
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125 void CNwssTransLookUpTable::RemoveEntry(MWspCOMethodCallback& aCallback) |
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126 { |
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127 // Locate the item in the table |
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128 TInt idx = KErrNotFound; |
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129 CNwssTransLookUpTable::CNwssTransLUTEntry* lutEntry = LookUp(aCallback, idx); |
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130 if (lutEntry) |
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131 { |
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132 iEntries.Remove(idx); |
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133 --iNumActiveLUTEntries; |
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134 |
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135 // Reset the entry, so it can be recycled |
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136 lutEntry->iCallback = NULL; |
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137 delete lutEntry->iResponseBodyHandler; |
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138 lutEntry->iResponseBodyHandler = NULL; |
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139 lutEntry->iStackTrans = RWSPCOTrans(); |
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140 lutEntry->iStackTransID = 0; |
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141 lutEntry->iAborted = EFalse; |
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142 |
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143 // Move the removed entry to the end of the table, to ensure the table remains |
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144 // of constant size. Note, this append will not leave, since the table size |
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145 // was preallocated in ConstructL. |
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146 #if defined (_DEBUG) && defined(__UNIT_TESTING__) |
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147 TInt err = |
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148 #endif |
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149 iEntries.Append(lutEntry); |
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150 #ifdef __UNIT_TESTING__ |
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151 __ASSERT_DEBUG(err == KErrNone, |
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152 TNwssWspTrHndPanic::Panic(TNwssWspTrHndPanic::ETransLUTOverflow)); |
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153 #endif |
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154 } |
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155 } |
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156 |
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157 TBool CNwssTransLookUpTable::IsEmpty() const |
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158 { |
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159 return iNumActiveLUTEntries == 0; |
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160 } |
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161 |
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162 CNwssTransLookUpTable::CNwssTransLUTEntry& CNwssTransLookUpTable::Head(TBool& aFound) |
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163 { |
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164 // Are there any entries |
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165 aFound = iNumActiveLUTEntries > 0; |
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166 |
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167 // Return the first entry |
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168 if (aFound) |
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169 return *(iEntries[0]); |
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170 |
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171 // dummy return |
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172 CNwssTransLookUpTable::CNwssTransLUTEntry* retVal = NULL; |
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173 return *retVal; |
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174 } |
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175 |
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176 void CNwssTransLookUpTable::ConstructL(TInt aTableSize) |
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177 { |
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178 CNwssTransLookUpTable::CNwssTransLUTEntry* entry; |
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179 |
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180 // Pre-allocate the look-up table |
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181 for (TInt ii = 0; ii < aTableSize; ++ii) |
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182 { |
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183 entry = CNwssTransLookUpTable::CNwssTransLUTEntry::NewL(); |
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184 CleanupStack::PushL(entry); |
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185 User::LeaveIfError( iEntries.Append(entry) ); |
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186 CleanupStack::Pop(entry); |
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187 } |
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188 } |
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189 |
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190 void CNwssTransLookUpTable::ResizeTableL(TInt aNewSize) |
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191 { |
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192 // Bail out now if the size doesn't change! |
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193 const TInt oldSize = iEntries.Count(); |
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194 if (aNewSize == oldSize) |
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195 return; |
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196 CNwssTransLookUpTable::CNwssTransLUTEntry* entry = NULL; |
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197 if (aNewSize > oldSize) |
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198 { |
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199 // Table is being enlarged - pre-allocate new entries |
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200 for (TInt ii = 0; ii < (aNewSize - oldSize); ++ii) |
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201 { |
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202 entry = CNwssTransLookUpTable::CNwssTransLUTEntry::NewL(); |
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203 CleanupStack::PushL(entry); |
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204 User::LeaveIfError( iEntries.Append(entry) ); |
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205 CleanupStack::Pop(entry); |
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206 } |
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207 |
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208 // High-water mark doesn't change in this situation |
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209 } |
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210 else |
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211 { |
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212 // Table is being shrunk - remove surplus entries |
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213 for (TInt ii = oldSize - 1; ii >= aNewSize; --ii) |
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214 { |
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215 delete iEntries[ii]; |
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216 iEntries.Remove(ii); |
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217 } |
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218 |
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219 // Adjust high-water mark |
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220 if (iNumActiveLUTEntries > aNewSize) |
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221 iNumActiveLUTEntries = aNewSize; |
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222 } |
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223 } |
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224 |
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225 CNwssTransLookUpTable::CNwssTransLUTEntry* |
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226 CNwssTransLookUpTable::LookUp(MWspCOMethodCallback& aCallback, TInt& aIndex) |
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227 { |
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228 // Iterate the look-up-table until we find the entry whose transaction callback |
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229 // matches the supplied value |
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230 TBool found = EFalse; |
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231 aIndex = 0; |
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232 CNwssTransLookUpTable::CNwssTransLUTEntry* lutEntry = NULL; |
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233 while (!found && (aIndex < iNumActiveLUTEntries)) |
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234 { |
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235 lutEntry = iEntries[aIndex]; |
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236 if (lutEntry->iCallback == &aCallback) |
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237 found = ETrue; |
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238 else |
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239 ++aIndex; |
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240 } |
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241 if (!found) |
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242 { |
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243 aIndex = KErrNotFound; |
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244 lutEntry = NULL; |
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245 } |
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246 return lutEntry; |
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247 } |