public SimpleReadCachingBlockStore(IBlockStore store, uint cacheCapacity = 512)
{
if (store == null)
{
throw new ArgumentNullException("store");
}
_store = store;
_blockCache = new SimpleRecentItemCache<byte[]>();
_blockCache.CacheCapacity = cacheCapacity;
_blockCache.ItemRemovedFromCache = ItemRemovedFromCache;
_blockCache.OnCacheMiss = CacheMiss;
_blockBuffPool = new ObjectPool<byte[]>(() => new byte[store.BlockSize]);
}
public SimpleReadWriteCachingBlockStore(IBlockStore store, uint capacity = 512)
{
if (store == null)
{
throw new ArgumentNullException("store");
}
_store = store;
_blockSize = _store.BlockSize;
_itemPool = new ObjectPool<CacheItem>(() => new CacheItem(_blockSize));
_blockCache = new SimpleRecentItemCache<CacheItem>();
_blockCache.CacheCapacity = capacity;
_blockCache.ItemRemovedFromCache = ItemRemovedFromCache;
_blockCache.OnCacheMiss = CacheMiss;
}
public SmarterReadCachingBlockStore(IBlockStore backend, uint cacheBlockSize, uint cacheCapacity = SimpleRecentItemCache<byte[]>.DefaultCacheSize)
{
if (backend == null)
{
throw new ArgumentNullException("backend");
}
_backend = backend;
_cacheBlockSize = cacheBlockSize;
if (cacheBlockSize % _backend.BlockSize != 0)
{
throw new Exception("Wrong CacheBlockSize value. Should be perfect multiple of backend block size");
}
_backendBlocksPerCacheBlock=cacheBlockSize/_backend.BlockSize;
_bufferPool = new ObjectPool<byte[]>(() => new byte[cacheBlockSize]);
_cache = new SimpleRecentItemCache<byte[]>(cacheCapacity);
_cache.ItemRemovedFromCache = ItemRemovedFromCache;
_cache.OnCacheMiss = CacheMiss;
}
