2017-09-17 02:07:27 +01:00

42 lines
978 B
C++

#pragma once
#ifndef MESSMER_BLOCKSTORE_INTERFACE_BLOCK_H_
#define MESSMER_BLOCKSTORE_INTERFACE_BLOCK_H_
#include "blockstore/utils/BlockId.h"
#include <cstring>
namespace blockstore {
//TODO Make Block non-virtual class that stores ptr to its blockstore and writes itself back to the blockstore who is offering a corresponding function.
// Then ondisk blockstore can be actually create the file on disk in blockstore::create() and cachingblockstore will delay that call to its base block store.
class Block {
public:
virtual ~Block() {}
virtual const void *data() const = 0;
virtual void write(const void *source, uint64_t offset, uint64_t size) = 0;
virtual void flush() = 0;
virtual size_t size() const = 0;
//TODO Test resize()
virtual void resize(size_t newSize) = 0;
const BlockId &blockId() const {
return _blockId;
}
protected:
Block(const BlockId &blockId) : _blockId(blockId) {}
private:
const BlockId _blockId;
};
}
#endif