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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 the License "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: Definition of CHttpCacheEvictionHandler |
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15 * |
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16 */ |
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17 |
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18 #ifndef CHTTPCACHEEVICTIONHANDLER_H |
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19 #define CHTTPCACHEEVICTIONHANDLER_H |
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20 |
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21 // INCLUDES |
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22 #include <e32base.h> |
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23 #include "HttpCacheUtil.h" |
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24 |
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25 // CONSTANTS |
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26 |
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27 // MACROS |
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28 |
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29 // FORWARD DECLARATIONS |
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30 class CHttpCacheEntry; |
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31 |
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32 // DATA TYPES |
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33 typedef TSglQue<CHttpCacheEntry> TBucket; |
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34 typedef TSglQueIter<CHttpCacheEntry> TBucketIter; |
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35 |
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36 // FUNCTION PROTOTYPES |
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37 |
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38 // CLASS DECLARATION |
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39 |
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40 /** |
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41 * |
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42 * @lib |
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43 * @since 3.1 |
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44 */ |
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45 class CHttpCacheEvictionHandler : public CBase |
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46 { |
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47 public: // Constructors and destructor |
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48 |
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49 /** |
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50 * Two-phased constructor. |
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51 * @since 3.1 |
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52 * @param |
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53 * @param |
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54 * @return CHttpCacheEvictionHandler object. |
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55 */ |
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56 static CHttpCacheEvictionHandler* NewL(); |
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57 |
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58 /** |
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59 * Destructor. |
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60 */ |
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61 virtual ~CHttpCacheEvictionHandler(); |
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62 |
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63 public: // new functions |
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64 |
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65 /** |
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66 * |
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67 * @since 3.1 |
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68 * @param |
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69 * @return |
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70 */ |
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71 void Insert( CHttpCacheEntry& aCacheEntry ); |
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72 |
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73 /** |
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74 * |
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75 * @since 3.1 |
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76 * @param |
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77 * @return |
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78 */ |
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79 void Accessed( CHttpCacheEntry& aCacheEntry ); |
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80 |
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81 /** |
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82 * |
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83 * @since 3.1 |
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84 * @param |
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85 * @return |
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86 */ |
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87 void Changed( CHttpCacheEntry& aCacheEntry ); |
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88 |
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89 /** |
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90 * |
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91 * @since 3.1 |
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92 * @param |
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93 * @return |
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94 */ |
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95 void Remove( CHttpCacheEntry& aCacheEntry ); |
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96 |
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97 /** |
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98 * |
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99 * @since 3.1 |
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100 * @param |
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101 * @return |
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102 */ |
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103 void RemoveAll(); |
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104 |
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105 /** |
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106 * |
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107 * @since 3.1 |
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108 * @param |
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109 * @return |
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110 */ |
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111 CArrayPtrFlat<CHttpCacheEntry>* EvictL( TInt aSpaceNeeded ); |
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112 |
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113 private: |
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114 |
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115 /** |
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116 * Construct. |
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117 * @since 3.1 |
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118 * @param |
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119 * @param |
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120 * @return CHttpCacheEvictionHandler object. |
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121 */ |
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122 CHttpCacheEvictionHandler(); |
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123 |
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124 /** |
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125 * By default Symbian 2nd phase constructor is private. |
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126 */ |
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127 void ConstructL(); |
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128 |
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129 private: |
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130 |
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131 /** |
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132 * |
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133 * @since 3.1 |
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134 * @param |
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135 * @return |
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136 */ |
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137 TBucket* Bucket( TInt aBucketIndex ); |
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138 |
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139 /** |
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140 * |
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141 * @since 3.1 |
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142 * @param |
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143 * @return |
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144 */ |
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145 TInt BucketIndex( TInt aSizeFrequencyValue ); |
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146 |
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147 /** |
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148 * |
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149 * @since 3.1 |
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150 * @param |
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151 * @return |
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152 */ |
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153 TBool ItemIsInBucket( TInt aBucketIndex, const CHttpCacheEntry& aCacheEntry ); |
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154 |
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155 /** |
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156 * |
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157 * @since 3.1 |
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158 * @param |
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159 * @return |
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160 */ |
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161 TInt FastLog2( TUint aNum ); |
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162 |
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163 #ifdef __CACHELOG__ |
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164 void LogBuckets(); |
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165 #endif // __CACHELOG__ |
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166 |
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167 private: // Data |
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168 |
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169 // array of 5 buckets each bucket is a linked list of |
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170 // cached items |
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171 CArrayPtrFlat<TBucket>* iBuckets; // owned |
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172 }; |
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173 |
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174 #endif // CHTTPCACHEEVICTIONHANDLER_H |
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175 |
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176 // End of File |