88 lines
2.0 KiB
C++
88 lines
2.0 KiB
C++
#ifndef ERA_WRITESET_TREE_H
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#define ERA_WRITESET_TREE_H
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#include "era/era_detail.h"
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#include "persistent-data/data-structures/btree.h"
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//----------------------------------------------------------------
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namespace era {
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namespace writeset_tree_detail {
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class damage_visitor;
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class damage {
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public:
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damage(std::string const &desc)
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: desc_(desc) {
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}
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virtual ~damage() {}
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virtual void visit(damage_visitor &v) const = 0;
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std::string const &get_desc() const {
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return desc_;
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}
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private:
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std::string desc_;
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};
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struct missing_eras : public damage {
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missing_eras(std::string const &desc, run<uint32_t> const &eras);
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virtual void visit(damage_visitor &v) const;
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run<uint32_t> eras_;
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};
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struct damaged_writeset : public damage {
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damaged_writeset(std::string const &desc,
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uint32_t era,
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run<uint32_t> missing_bits);
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virtual void visit(damage_visitor &v) const;
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uint32_t era_;
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run<uint32_t> missing_bits_;
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};
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class damage_visitor {
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public:
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typedef boost::shared_ptr<damage_visitor> ptr;
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virtual ~damage_visitor() {}
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void visit(damage const &d) {
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d.visit(*this);
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}
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virtual void visit(missing_eras const &d) = 0;
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virtual void visit(damaged_writeset const &d) = 0;
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};
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class writeset_visitor {
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public:
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typedef boost::shared_ptr<writeset_visitor> ptr;
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virtual ~writeset_visitor() {}
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virtual void writeset_begin(uint32_t era, uint32_t nr_bits) = 0;
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virtual void bit(uint32_t index, bool value) = 0;
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virtual void writeset_end() = 0;
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};
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}
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typedef persistent_data::btree<1, era_detail_traits> writeset_tree;
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void walk_writeset_tree(persistent_data::transaction_manager::ptr tm,
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writeset_tree const &tree,
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writeset_tree_detail::writeset_visitor &writeset_v,
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writeset_tree_detail::damage_visitor &dv);
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void check_writeset_tree(persistent_data::transaction_manager::ptr tm,
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writeset_tree const &tree,
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writeset_tree_detail::damage_visitor &dv);
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}
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//----------------------------------------------------------------
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#endif
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