void ImageDecodingStore::insertCacheInternal(PassOwnPtr<CacheEntry> cacheEntry)
{
    if (!cacheEntry->isDiscardable())
        incrementMemoryUsage(cacheEntry->memoryUsageInBytes());
    TRACE_COUNTER1("webkit", "ImageDecodingStoreMemoryUsageBytes", m_memoryUsageInBytes);

    // m_orderedCacheList is used to support LRU operations to reorder cache
    // entries quickly.
    m_orderedCacheList.append(cacheEntry.get());

    CacheIdentifier key = cacheEntry->cacheKey();
    // m_cacheMap is used for indexing and quick lookup of a cached image. It owns
    // all cache entries.
    m_cacheMap.add(key, cacheEntry);
    TRACE_COUNTER1("webkit", "ImageDecodingStoreNumOfEntries", m_cacheMap.size());

    // m_cachedSizeMap keeps all scaled sizes associated with an ImageFrameGenerator.
    CachedSizeMap::AddResult result = m_cachedSizeMap.add(key.first, SizeSet());
    result.iterator->value.add(key.second);
}
示例#2
0
void ImageDecodingStore::insertCacheInternal(PassOwnPtr<T> cacheEntry, U* cacheMap, V* identifierMap)
{
    const size_t cacheEntryBytes = cacheEntry->memoryUsageInBytes();
    if (cacheEntry->isDiscardable())
        m_discardableMemoryUsageInBytes += cacheEntryBytes;
    else
        m_heapMemoryUsageInBytes += cacheEntryBytes;

    // m_orderedCacheList is used to support LRU operations to reorder cache
    // entries quickly.
    m_orderedCacheList.append(cacheEntry.get());

    typename U::KeyType key = cacheEntry->cacheKey();
    typename V::AddResult result = identifierMap->add(cacheEntry->generator(), typename V::MappedType());
    result.storedValue->value.add(key);
    cacheMap->add(key, cacheEntry);

    TRACE_COUNTER1("webkit", "ImageDecodingStoreDiscardableMemoryUsageBytes", m_discardableMemoryUsageInBytes);
    TRACE_COUNTER1("webkit", "ImageDecodingStoreHeapMemoryUsageBytes", m_heapMemoryUsageInBytes);
    TRACE_COUNTER1("webkit", "ImageDecodingStoreNumOfImages", m_imageCacheMap.size());
    TRACE_COUNTER1("webkit", "ImageDecodingStoreNumOfDecoders", m_decoderCacheMap.size());
}