42 lines
930 B
C++
42 lines
930 B
C++
#pragma once
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#ifndef MESSMER_BLOCKSTORE_INTERFACE_BLOCK_H_
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#define MESSMER_BLOCKSTORE_INTERFACE_BLOCK_H_
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#include "../utils/Key.h"
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#include <cstring>
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namespace blockstore {
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//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.
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// 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.
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class Block {
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public:
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virtual ~Block() {}
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virtual const void *data() const = 0;
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virtual void write(const void *source, uint64_t offset, uint64_t size) = 0;
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virtual void flush() = 0;
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virtual size_t size() const = 0;
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//TODO Test resize()
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virtual void resize(size_t newSize) = 0;
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const Key &key() const {
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return _key;
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}
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protected:
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Block(const Key &key) : _key(key) {}
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private:
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const Key _key;
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};
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}
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#endif
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