thin-provisioning-tools/caching/emitter.h

52 lines
1.2 KiB
C++

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