88 lines
1.7 KiB
C++
88 lines
1.7 KiB
C++
#include "caching/mapping_array.h"
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#include "persistent-data/endian_utils.h"
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using namespace caching;
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using namespace caching::mapping_array_damage;
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//----------------------------------------------------------------
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namespace {
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const uint64_t FLAGS_MASK = (1 << 16) - 1;
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}
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void
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mapping_traits::unpack(disk_type const &disk, value_type &value)
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{
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uint64_t v = base::to_cpu<uint64_t>(disk);
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value.oblock_ = v >> 16;
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value.flags_ = v & FLAGS_MASK;
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}
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void
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mapping_traits::pack(value_type const &value, disk_type &disk)
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{
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uint64_t packed = value.oblock_ << 16;
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packed = packed | (value.flags_ & FLAGS_MASK);
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disk = base::to_disk<le64>(packed);
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}
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//----------------------------------------------------------------
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missing_mappings::missing_mappings(std::string const &desc, run<uint32_t> const &keys)
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: damage(desc),
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keys_(keys)
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{
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}
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void
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missing_mappings::visit(damage_visitor &v) const
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{
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v.visit(*this);
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}
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invalid_mapping::invalid_mapping(std::string const &desc,
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block_address cblock, mapping const &m)
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: damage(desc),
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cblock_(cblock),
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m_(m)
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{
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}
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void
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invalid_mapping::visit(damage_visitor &v) const
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{
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v.visit(*this);
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}
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namespace {
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struct no_op_visitor {
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virtual void visit(uint32_t index,
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mapping_traits::value_type const &v) {
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}
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};
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class ll_damage_visitor {
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public:
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ll_damage_visitor(damage_visitor &v)
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: v_(v) {
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}
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virtual void visit(array_detail::damage const &d) {
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v_.visit(missing_mappings(d.desc_, d.lost_keys_));
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}
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private:
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damage_visitor &v_;
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};
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}
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void
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caching::check_mapping_array(mapping_array const &array, damage_visitor &visitor)
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{
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no_op_visitor vv;
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ll_damage_visitor ll(visitor);
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array.visit_values(vv, ll);
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}
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//----------------------------------------------------------------
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