author | hgs |
Mon, 13 Sep 2010 16:12:41 +0530 | |
changeset 61 | 2fc972553898 |
parent 0 | af10295192d8 |
permissions | -rw-r--r-- |
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// Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// dstcache.cpp - Destination cache implementation |
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// Destination cache implementation |
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// |
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/** |
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@file dstcache.cpp |
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*/ |
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#include <in6_dstcache.h> |
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#ifdef SYMBIAN_ENABLE_SPLIT_HEADERS |
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#include <in6_dstcache_internal.h> |
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#endif |
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#ifdef NONSHARABLE_CLASS |
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NONSHARABLE_CLASS(CDestinationCache); |
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#endif |
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class CDestinationCache : public MDestinationCache, public CBase |
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{ |
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public: |
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CDestinationCache(TInt aKeyMode); |
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// ~CDestinationCache(); // No explicit destructor needed, as far as I see |
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void ConstructL(); |
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virtual void StoreL(const TInetAddr &aAddr, TCacheInfo &aInfo); |
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virtual const TCacheInfo *Find(const TInetAddr &aAddr); |
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virtual void RemoveL(const TInetAddr &aAddr); |
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virtual void SetL(const TInetAddr &aAddr, TUint aParIndex, TUint32 aValue); |
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virtual void Cleanup(); |
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virtual inline void RemoveAll() |
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{ iStorage.RemoveAll(); } |
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virtual inline void SetLifetime(TUint aLifetime) { iLifetime = aLifetime; } |
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virtual inline void SetMaxSize(TUint aMaxSize) { iMaxSize = aMaxSize; } |
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friend TBool IfIsExpired(const TCacheInfo &aCinfo, void *aCachePtr); |
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virtual TBool Match(const TInetAddr& aAddrA, const TInetAddr& aAddrB) const; |
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private: |
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TBool IsExpired(const TCacheInfo &aCinfo) const; |
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TCacheHash iStorage; //< Hash table that stores the destination cache entries |
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TUint iLifetime; //< Lifetime of a destination cache entry (seconds) |
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TUint iMaxSize; //< Maximum memory used for cache entries (bytes) |
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TUint iMemUsed; //< Current total memory used by cache entries |
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// Key Mode selected when instantiating this class |
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THashKeyIp6::TKeyMode iKeyMode; |
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}; |
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EXPORT_C MDestinationCache *MDestinationCache::CreateDstCache(TInt aKeyMode) |
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{ |
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CDestinationCache *dcache = new CDestinationCache(aKeyMode); |
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if (dcache) |
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{ |
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TInt err = KErrNone; |
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// coverity[leave_without_push] |
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// if ConstructL() leaves, the leave code is trapped in "err" and proper cleanup is done by freeing the memory alocated to "dcache" |
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TRAP(err, dcache->ConstructL()); |
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if (err != KErrNone) |
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{ |
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delete dcache; |
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dcache = NULL; |
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} |
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} |
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return dcache; |
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} |
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CDestinationCache::CDestinationCache(TInt aKeyMode) : CBase(), |
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iStorage(KCacheHashSize), |
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iLifetime(KDstCacheLifetime), |
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iMaxSize(KDstCacheMaxSize) |
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{ |
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switch (aKeyMode) |
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{ |
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case 2: |
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iKeyMode = THashKeyIp6::EPerNet; |
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break; |
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default: |
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iKeyMode = THashKeyIp6::EPerHost; |
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107 |
break; |
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108 |
|
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109 |
// EPerIface not yet implemented |
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110 |
} |
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111 |
} |
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112 |
|
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113 |
|
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114 |
void CDestinationCache::ConstructL() |
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115 |
{ |
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iStorage.ConstructL(); |
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} |
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118 |
|
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119 |
|
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void CDestinationCache::StoreL(const TInetAddr &aAddr, TCacheInfo &aInfo) |
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121 |
{ |
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aInfo.iStoreTime.UniversalTime(); |
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THashKeyIp6 k(iKeyMode, aAddr); |
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124 |
|
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// Check that hash size does not exceed the given limit. |
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// If it is about to do so, clean up expired entries and try again. |
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// If it still fails, StoreL fails. |
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if (iMemUsed >= iMaxSize) |
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129 |
{ |
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Cleanup(); // This reduces iMemUsed if there was expired entries |
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if (iMemUsed >= iMaxSize) |
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132 |
{ |
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User::Leave(KErrNoMemory); // TODO: change error code |
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134 |
} |
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135 |
} |
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136 |
|
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// Check if there is a non-expired entry in the cache. If incoming aInfo has any |
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// non-null entries, they replace the earlier cache entries. Entries that were |
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139 |
// not updated with this call remain unmodified in the cache. |
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140 |
// However, the store time is refreshed. |
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141 |
TCacheInfo *oldent = iStorage.Find(k); |
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if (oldent && !IsExpired(*oldent)) |
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143 |
{ |
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for (TUint i = 0; i < KNumCacheMetrics; i++) |
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145 |
{ |
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146 |
if (aInfo.iMetrics[i] != 0) |
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oldent->iMetrics[i] = aInfo.iMetrics[i]; |
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148 |
} |
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149 |
oldent->iStoreTime.UniversalTime(); |
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150 |
|
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151 |
return; // Hash-store method is not needed this time. |
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152 |
} |
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153 |
|
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154 |
TUint mem = iStorage.StoreL(k, aInfo); |
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iMemUsed += mem; |
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156 |
} |
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157 |
|
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158 |
|
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159 |
void CDestinationCache::SetL(const TInetAddr &aAddr, TUint aParIndex, TUint32 aValue) |
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160 |
{ |
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161 |
TCacheInfo *infoptr; |
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162 |
|
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// Overwrite existing value if it exists, otherwise create a new entry in cache |
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THashKeyIp6 k(iKeyMode, aAddr); |
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infoptr = iStorage.Find(k); |
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166 |
|
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167 |
if (infoptr && !IsExpired(*infoptr)) |
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168 |
{ |
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169 |
infoptr->iMetrics[aParIndex] = aValue; |
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infoptr->iStoreTime.UniversalTime(); |
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171 |
} |
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172 |
else |
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173 |
{ |
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174 |
TCacheInfo newinfo; |
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175 |
newinfo.ClearAll(); |
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176 |
newinfo.iMetrics[aParIndex] = aValue; |
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177 |
StoreL(aAddr, newinfo); |
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178 |
} |
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179 |
} |
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180 |
|
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181 |
|
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const TCacheInfo *CDestinationCache::Find(const TInetAddr &aAddr) |
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183 |
{ |
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184 |
THashKeyIp6 k(iKeyMode, aAddr); |
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185 |
TCacheInfo *cinfo = iStorage.Find(k); |
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186 |
|
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187 |
// Check whether the cache entry is recent enough. If not, return NULL. |
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188 |
// However, we don't delete an expired entry from cache. It remains as a placeholder |
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189 |
// for future equivalent entries. |
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190 |
if (!cinfo || IsExpired(*cinfo)) |
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191 |
{ |
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192 |
return NULL; |
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193 |
} |
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194 |
|
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195 |
return cinfo; |
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196 |
} |
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197 |
|
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198 |
|
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199 |
void CDestinationCache::RemoveL(const TInetAddr &aAddr) |
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200 |
{ |
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201 |
THashKeyIp6 k(iKeyMode, aAddr); |
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202 |
TUint mem = iStorage.RemoveL(k); |
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203 |
iMemUsed -= mem; |
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204 |
} |
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205 |
|
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206 |
|
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207 |
// Same as CDestinationCache::IsExpired(), but this is to be used with RemoveIf() call. |
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208 |
TBool IfIsExpired(const TCacheInfo &aCinfo, void *aCachePtr) |
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209 |
{ |
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210 |
if (!aCachePtr) |
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211 |
{ |
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212 |
return EFalse; |
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213 |
} |
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return ((CDestinationCache *)aCachePtr)->IsExpired(aCinfo); |
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} |
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void CDestinationCache::Cleanup() |
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{ |
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iMemUsed -= iStorage.RemoveIf(IfIsExpired, this); |
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} |
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|
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TBool CDestinationCache::IsExpired(const TCacheInfo &aCinfo) const |
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{ |
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TTime now; |
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TTimeIntervalSeconds secs; |
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|
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now.UniversalTime(); |
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if (now.SecondsFrom(aCinfo.iStoreTime, secs) != KErrNone) |
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{ |
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// Overflow or something. Consider it as expired entry. |
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return ETrue; |
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} |
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|
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if ((TUint)secs.Int() > iLifetime) |
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{ |
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// Expired |
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return ETrue; |
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} |
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|
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return EFalse; |
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} |
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|
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245 |
|
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TBool CDestinationCache::Match(const TInetAddr& aAddrA, const TInetAddr& aAddrB) const |
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{ |
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THashKeyIp6 ka(iKeyMode, aAddrA); |
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THashKeyIp6 kb(iKeyMode, aAddrB); |
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|
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return ka.IsEqual(kb); |
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} |
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|
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|
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// --- THashTable methods --- |
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|
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template <class K, class V> |
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THashTable<K,V>::THashTable(TUint aSize) : iTable(NULL), iSize(aSize) |
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{ |
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} |
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|
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|
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template <class K, class V> |
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THashTable<K,V>::~THashTable() |
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{ |
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RemoveAll(); |
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delete [] iTable; |
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} |
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|
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|
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template <class K, class V> |
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void THashTable<K,V>::ConstructL() |
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{ |
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iTable = new TChain<K,V>[iSize]; |
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if (!iTable) |
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{ |
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User::Leave(KErrNoMemory); |
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} |
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|
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for (TUint i = 0; i < iSize; i++) |
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{ |
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iTable[i].iNext = NULL; |
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} |
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} |
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|
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|
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template <class K, class V> |
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TUint THashTable<K,V>::StoreL(MHashKey& aKey, V& aValue) |
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{ |
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if (!iTable) |
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{ |
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User::Leave(KErrGeneral); |
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} |
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|
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TUint memused = 0; |
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TInt idx = aKey.ToInt() % iSize; |
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TChain<K,V> *ptr = &iTable[idx], *newitem = NULL; |
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while (ptr->iNext) |
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{ |
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if (ptr->iNext->iKey.IsEqual(aKey)) |
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{ |
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// The conventional mode would be: |
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// User::Leave(KErrAlreadyExists) |
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// ...however, due to the lazy garbage collection mode adopted, we overwrite |
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// the existing entry |
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newitem = ptr->iNext; |
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break; |
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} |
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ptr = ptr->iNext; |
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} |
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311 |
|
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// If the key wasn't stored earlier, allocate space for new data item. |
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// Allocations from heap is not always a very popular idea, but these events are |
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// expected to occur quite rarely. |
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if (!newitem) |
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{ |
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newitem = new(ELeave) TChain<K,V>; |
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|
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if (!newitem) |
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{ |
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User::Leave(KErrNoMemory); |
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} |
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|
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|
324 |
newitem->iKey = *((K*) &aKey); |
af10295192d8
Revision: 201004
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parents:
diff
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|
325 |
newitem->iNext = NULL; |
af10295192d8
Revision: 201004
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parents:
diff
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|
326 |
ptr->iNext = newitem; |
af10295192d8
Revision: 201004
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parents:
diff
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|
327 |
memused = sizeof(TChain<K,V>); |
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parents:
diff
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|
328 |
} |
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diff
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|
329 |
|
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parents:
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|
330 |
newitem->iValue = aValue; |
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parents:
diff
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|
331 |
|
af10295192d8
Revision: 201004
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parents:
diff
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|
332 |
/* Dynamically allocated memory newitem has been assigned to ptr->iNext and managed through the list. |
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Revision: 201004
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diff
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|
333 |
So CleanupStack::PopAndDestroy() will deallocate that memory. But, Coverity has misinterpreted it an issue.*/ |
af10295192d8
Revision: 201004
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parents:
diff
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|
334 |
// coverity [SYMBIAN.CLEANUP STACK] |
af10295192d8
Revision: 201004
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parents:
diff
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|
335 |
// coverity [memory_leak] |
af10295192d8
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diff
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|
336 |
return memused; |
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Revision: 201004
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parents:
diff
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|
337 |
} |
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parents:
diff
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|
338 |
|
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parents:
diff
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|
339 |
|
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Revision: 201004
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parents:
diff
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|
340 |
template <class K, class V> |
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Revision: 201004
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|
341 |
V* THashTable<K,V>::Find(MHashKey& aKey) |
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Revision: 201004
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diff
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|
342 |
{ |
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Revision: 201004
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parents:
diff
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|
343 |
if (!iTable) return NULL; |
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Revision: 201004
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parents:
diff
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|
344 |
|
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Revision: 201004
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parents:
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|
345 |
TInt idx = aKey.ToInt() % iSize; |
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Revision: 201004
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parents:
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|
346 |
TChain<K,V> *ptr = &iTable[idx]; |
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Revision: 201004
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parents:
diff
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|
347 |
while (ptr->iNext) |
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Revision: 201004
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parents:
diff
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|
348 |
{ |
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Revision: 201004
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|
349 |
if (ptr->iNext->iKey.IsEqual(aKey)) |
af10295192d8
Revision: 201004
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parents:
diff
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|
350 |
{ |
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Revision: 201004
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parents:
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|
351 |
return &ptr->iNext->iValue; |
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Revision: 201004
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parents:
diff
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|
352 |
} |
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Revision: 201004
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parents:
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|
353 |
ptr = ptr->iNext; |
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Revision: 201004
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parents:
diff
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|
354 |
} |
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Revision: 201004
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parents:
diff
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|
355 |
|
af10295192d8
Revision: 201004
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parents:
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|
356 |
// Not found |
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Revision: 201004
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|
357 |
return NULL; |
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Revision: 201004
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parents:
diff
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|
358 |
} |
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Revision: 201004
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parents:
diff
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|
359 |
|
af10295192d8
Revision: 201004
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parents:
diff
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|
360 |
|
af10295192d8
Revision: 201004
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parents:
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|
361 |
template <class K, class V> |
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Revision: 201004
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|
362 |
TUint THashTable<K,V>::RemoveL(MHashKey& aKey) |
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Revision: 201004
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parents:
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|
363 |
{ |
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Revision: 201004
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parents:
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|
364 |
if (!iTable) |
af10295192d8
Revision: 201004
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parents:
diff
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|
365 |
{ |
af10295192d8
Revision: 201004
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parents:
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|
366 |
User::Leave(KErrGeneral); |
af10295192d8
Revision: 201004
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parents:
diff
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|
367 |
} |
af10295192d8
Revision: 201004
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parents:
diff
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|
368 |
|
af10295192d8
Revision: 201004
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parents:
diff
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|
369 |
TInt idx = aKey.ToInt() % iSize; |
af10295192d8
Revision: 201004
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parents:
diff
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|
370 |
TChain<K,V> *ptr = &iTable[idx]; |
af10295192d8
Revision: 201004
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parents:
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|
371 |
while (ptr->iNext) |
af10295192d8
Revision: 201004
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parents:
diff
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|
372 |
{ |
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Revision: 201004
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parents:
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|
373 |
if (ptr->iNext->iKey.IsEqual(aKey)) |
af10295192d8
Revision: 201004
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parents:
diff
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|
374 |
{ |
af10295192d8
Revision: 201004
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parents:
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|
375 |
TChain<K,V> *removed = ptr->iNext; |
af10295192d8
Revision: 201004
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parents:
diff
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|
376 |
ptr->iNext = removed->iNext; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
377 |
delete removed; |
af10295192d8
Revision: 201004
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parents:
diff
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|
378 |
return sizeof(TChain<K,V>); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
379 |
} |
af10295192d8
Revision: 201004
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parents:
diff
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|
380 |
} |
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
381 |
|
af10295192d8
Revision: 201004
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parents:
diff
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|
382 |
// Key was not found |
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
383 |
User::Leave(KErrNotFound); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
384 |
return 0; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
385 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
386 |
|
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
387 |
|
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
388 |
template <class K, class V> |
af10295192d8
Revision: 201004
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parents:
diff
changeset
|
389 |
TUint THashTable<K,V>::Length() |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
390 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
391 |
if (!iTable) return 0; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
392 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
393 |
TUint length = 0; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
394 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
395 |
for (TInt idx = 0; idx < iSize; idx++) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
396 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
397 |
TChain<K,V> *ptr = &iTable[idx]; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
398 |
while (ptr->iNext) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
399 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
400 |
length++; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
401 |
ptr = ptr->iNext; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
402 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
403 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
404 |
return length; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
405 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
406 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
407 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
408 |
template <class K, class V> |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
409 |
TUint THashTable<K,V>::RemoveIf( TBool (*aRemoveCriteria)(const V&, void *), |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
410 |
void *aDataObject) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
411 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
412 |
if (!iTable) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
413 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
414 |
return 0; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
415 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
416 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
417 |
TUint memfreed = 0; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
418 |
TChain<K,V> *ptr = NULL; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
419 |
for (TUint idx = 0; idx < iSize; idx++) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
420 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
421 |
ptr = &iTable[idx]; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
422 |
while (ptr->iNext) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
423 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
424 |
if (aRemoveCriteria(ptr->iNext->iValue, aDataObject)) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
425 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
426 |
TChain<K,V> *removed = ptr->iNext; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
427 |
ptr->iNext = removed->iNext; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
428 |
delete removed; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
429 |
memfreed += sizeof(TChain<K,V>); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
430 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
431 |
ptr = ptr->iNext; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
432 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
433 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
434 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
435 |
return memfreed; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
436 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
437 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
438 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
439 |
template <class K, class V> |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
440 |
void THashTable<K,V>::RemoveAll() |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
441 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
442 |
if (iTable != NULL) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
443 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
444 |
TChain<K,V> *ptr = NULL, *last = NULL; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
445 |
for (TUint i = 0; i < iSize; i++) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
446 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
447 |
// Remember that the first chain entry in &iTable[i] does not contain data. |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
448 |
// The data items start from the linked entries. |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
449 |
ptr = &iTable[i]; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
450 |
while (ptr) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
451 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
452 |
ptr = ptr->iNext; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
453 |
if (last) delete last; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
454 |
last = ptr; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
455 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
456 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
457 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
458 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
459 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
460 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
461 |
THashKeyIp6::THashKeyIp6(TKeyMode aKeyMode, const TInetAddr& aAddr) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
462 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
463 |
// TODO: retrieve key mode, and assign only a prefix instead of full address. |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
464 |
// Simple prefix length is not enough, because I'd like to use the same cache for |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
465 |
// both IPv4 and IPv6 |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
466 |
iKeyMode = aKeyMode; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
467 |
iAddress = aAddr.Ip6Address(); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
468 |
iScopeId = aAddr.Scope(); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
469 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
470 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
471 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
472 |
TUint THashKeyIp6::ToInt() |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
473 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
474 |
if (iKeyMode == EPerNet) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
475 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
476 |
if (iAddress.IsV4Mapped()) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
477 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
478 |
// IPv4: Network is considered a /24 |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
479 |
return iAddress.u.iAddr32[3] >> 8; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
480 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
481 |
else |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
482 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
483 |
// IPv6: Network is considered a /64. |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
484 |
// Return the least significant 32 bits from the network part. |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
485 |
return iAddress.u.iAddr32[1]; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
486 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
487 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
488 |
else // EPerHost and others (EPerIface not yet implemented) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
489 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
490 |
// The least significant 32 bits is used as the int index |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
491 |
return iAddress.u.iAddr32[3]; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
492 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
493 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
494 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
495 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
496 |
TBool THashKeyIp6::IsEqual(const MHashKey& aKey) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
497 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
498 |
// casting is always risky business, but the user is required |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
499 |
// to use this method properly |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
500 |
const TIp6Addr addr2 = ((const THashKeyIp6&)aKey).Ip6Address(); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
501 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
502 |
// If scope id is different, match will always fail |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
503 |
// (until per interface mode is implemented) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
504 |
if (iScopeId != ((const THashKeyIp6&)aKey).ScopeId()) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
505 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
506 |
return EFalse; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
507 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
508 |
|
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
509 |
if (iKeyMode == EPerNet) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
510 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
511 |
TInt match = iAddress.Match(addr2); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
512 |
if (iAddress.IsV4Mapped() && match >= 96 + 24) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
513 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
514 |
return ETrue; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
515 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
516 |
else if (match >= 64) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
517 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
518 |
return ETrue; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
519 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
520 |
return EFalse; |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
521 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
522 |
else // EPerHost and others (EPerIface not yet implemented) |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
523 |
{ |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
524 |
return iAddress.IsEqual(addr2); |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
525 |
} |
af10295192d8
Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
526 |
} |