libcryfs/implementations/caching/CachedBlock.h

38 lines
908 B
C++

#pragma once
#ifndef MESSMER_BLOCKSTORE_IMPLEMENTATIONS_CACHING_CACHEDBLOCK_H_
#define MESSMER_BLOCKSTORE_IMPLEMENTATIONS_CACHING_CACHEDBLOCK_H_
#include "../../interface/Block.h"
#include <messmer/cpp-utils/pointer/unique_ref.h>
namespace blockstore {
namespace caching {
class CachingBlockStore;
class CachedBlock final: public Block {
public:
//TODO Storing key twice (in parent class and in object pointed to). Once would be enough.
CachedBlock(cpputils::unique_ref<Block> baseBlock, CachingBlockStore *blockStore);
~CachedBlock();
const void *data() const override;
void write(const void *source, uint64_t offset, uint64_t size) override;
void flush() override;
size_t size() const override;
cpputils::unique_ref<Block> releaseBlock();
private:
CachingBlockStore *_blockStore;
cpputils::unique_ref<Block> _baseBlock;
DISALLOW_COPY_AND_ASSIGN(CachedBlock);
};
}
}
#endif