thin-provisioning-tools/era/era_array.h
2014-01-23 00:46:03 +00:00

79 lines
1.7 KiB
C++

#ifndef ERA_ARRAY_H
#define ERA_ARRAY_H
#include "persistent-data/data-structures/array.h"
#include "persistent-data/data-structures/simple_traits.h"
//----------------------------------------------------------------
namespace era {
namespace era_array_detail {
class damage_visitor;
class damage {
public:
damage(std::string const &desc)
: desc_(desc) {
}
virtual ~damage() {}
virtual void visit(damage_visitor &v) const = 0;
std::string get_desc() const {
return desc_;
}
private:
std::string desc_;
};
struct missing_eras : public damage {
missing_eras(std::string const &desc, run<uint32_t> const &eras);
virtual void visit(damage_visitor &v) const;
run<uint32_t> eras_;
};
struct invalid_era : public damage {
invalid_era(std::string const &desc, block_address block, uint32_t era);
virtual void visit(damage_visitor &v) const;
block_address block_;
uint32_t era_;
};
class damage_visitor {
public:
virtual ~damage_visitor() {}
void visit(era_array_detail::damage const &d) {
d.visit(*this);
}
virtual void visit(missing_eras const &d) = 0;
virtual void visit(invalid_era const &d) = 0;
};
}
typedef persistent_data::array<uint32_traits> era_array;
class era_array_visitor {
public:
virtual ~era_array_visitor() {}
virtual void visit(uint32_t index, uint32_t era) = 0;
};
void walk_era_array(era_array const &array,
era_array_visitor &ev,
era_array_detail::damage_visitor &dv);
void check_era_array(era_array const &array,
uint32_t current_era,
era_array_detail::damage_visitor &dv);
}
//----------------------------------------------------------------
#endif