52 lines
1.2 KiB
C++
52 lines
1.2 KiB
C++
#ifndef CACHE_EMITTER_H
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#define CACHE_EMITTER_H
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#include "persistent-data/block.h"
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#include <boost/shared_ptr.hpp>
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#include <vector>
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//----------------------------------------------------------------
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namespace caching {
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namespace pd = persistent_data;
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class emitter {
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public:
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typedef boost::shared_ptr<emitter> ptr;
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virtual ~emitter() {}
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virtual void begin_superblock(std::string const &uuid,
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pd::block_address block_size,
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pd::block_address nr_cache_blocks,
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std::string const &policy,
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size_t hint_width) = 0;
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virtual void end_superblock() = 0;
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virtual void begin_mappings() = 0;
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virtual void end_mappings() = 0;
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virtual void mapping(pd::block_address cblock,
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pd::block_address oblock,
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bool dirty) = 0;
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virtual void begin_hints() = 0;
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virtual void end_hints() = 0;
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virtual void hint(pd::block_address cblock,
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std::vector<unsigned char> const &data) = 0;
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virtual void begin_discards() = 0;
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virtual void end_discards() = 0;
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virtual void discard(pd::block_address dblock_begin,
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pd::block_address dblock_end) = 0;
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};
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}
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//----------------------------------------------------------------
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#endif
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