diff -r 795cadd2b83a -r 09b5fcf47b30 fontservices/fontstore/src/OPENFONT.CPP --- a/fontservices/fontstore/src/OPENFONT.CPP Wed Sep 15 14:10:32 2010 +0300 +++ b/fontservices/fontstore/src/OPENFONT.CPP Wed Oct 13 16:35:09 2010 +0300 @@ -26,7 +26,6 @@ #include "linkedfontsprivate.h" #include #include -#include const TInt KSessionCacheEntries = 512; const TInt KDefaultSlantFactor = 20480; @@ -849,13 +848,13 @@ iFileOffset = 0; } -COpenFontGlyphCache* COpenFont::GetGlyphCache() const +COpenFontGlyphCache* COpenFont::GetGlyphCache() { if (iGlyphCacheOffset == 0) { return NULL; } - return reinterpret_cast(PtrAdd(const_cast(this), iGlyphCacheOffset)); + return reinterpret_cast(PtrAdd(this, iGlyphCacheOffset)); } const COpenFontGlyph* COpenFont::Glyph(TInt aSessionHandle, TInt aCode) const @@ -894,7 +893,7 @@ @param aCode The code for the glpyh to look for in the cache @return A pointer to the requested glyph if it was found in the glyph cache, NULL if it was not found. */ -const COpenFontGlyph* COpenFont::FontCacheGlyph(TInt aCode) const +const COpenFontGlyph* COpenFont::FontCacheGlyph(TInt aCode) { if (COpenFontGlyphCache* glyphCache = GetGlyphCache()) { @@ -1057,52 +1056,58 @@ iEntryArray.Close(aHeap); } -const COpenFontGlyph* COpenFontSessionCache::Glyph(const COpenFont* aFont, TInt aCode, TInt& aIndex) const +const COpenFontGlyph* COpenFontSessionCache::Glyph(const COpenFont* aFont, TInt aCode, TInt& aIndex) { aIndex = -1; + TInt oldest = KMaxTInt; + TInt oldest_index = 0; TInt numEntries = iEntryArray.Count(); TInt index = GLYPH_CODE(aCode) % numEntries; // simple hash function to shorten searches for (TInt i = 0; i < numEntries; ++i, ++index) { if (index >= numEntries) - { index = 0; - } - const COpenFontSessionCacheEntry* entry = iEntryArray[index]; + COpenFontSessionCacheEntry* entry = iEntryArray[index]; if (entry == NULL) { - if (aIndex < 0) + if (aIndex == -1) + aIndex = index; + } + else + { + if (entry->Font() == aFont && entry->iCode == aCode) { - aIndex = index; + entry->iLastAccess = iLastAccess++; + return entry; + } + if (entry->iLastAccess < oldest) + { + oldest = entry->iLastAccess; + oldest_index = index; } } - else if (entry->Font() == aFont && entry->iCode == aCode) - { - return entry; - } } + if (aIndex == -1) + aIndex = oldest_index; return NULL; } void COpenFontSessionCache::Insert(RHeap* aHeap, COpenFontSessionCacheEntry* aEntry, TInt aIndex) { - if (aIndex >= iEntryArray.Count()) + if (aIndex < 0 || aIndex >= iEntryArray.Count()) { Panic(EFntSessionCacheIndexOutOfRange); } - if (aIndex < 0) - { - aIndex = Math::Rand(iRandomSeed) % iEntryArray.Count(); - } COpenFontSessionCacheEntry::Delete(aHeap, iEntryArray[aIndex]); iEntryArray.SetAt(aIndex, aEntry); + aEntry->iLastAccess = iLastAccess++; } COpenFontSessionCache::COpenFontSessionCache(TInt aSessionHandle): iSessionHandle(aSessionHandle), - iRandomSeed(0) - { + iLastAccess(0) + { } TInt COpenFontSessionCacheList::AddCache(COpenFontSessionCache* aCache)