thin-provisioning-tools/era/era_detail.h
2021-09-22 17:05:59 +08:00

64 lines
1.4 KiB
C++

#ifndef ERA_DETAIL_H
#define ERA_DETAIL_H
#include "base/endian_utils.h"
#include "persistent-data/transaction_manager.h"
//----------------------------------------------------------------
namespace era {
struct era_detail_disk {
base::le32 nr_bits;
base::le64 writeset_root;
} __attribute__ ((packed));
struct era_detail {
era_detail()
: nr_bits(0),
writeset_root(0) {
}
uint32_t nr_bits;
uint64_t writeset_root;
};
inline bool operator==(era_detail const& lhs, era_detail const& rhs) {
return lhs.nr_bits == rhs.nr_bits && lhs.writeset_root == rhs.writeset_root;
}
inline bool operator!=(era_detail const& lhs, era_detail const& rhs) {
return !(lhs == rhs);
}
struct era_detail_ref_counter {
era_detail_ref_counter(persistent_data::transaction_manager::ptr tm)
: tm_(tm) {
}
void inc(era_detail const &d) {
tm_->get_sm()->inc(d.writeset_root);
}
void dec(era_detail const &d) {
// I don't think we ever do this in the tools
throw std::runtime_error("not implemented");
}
private:
persistent_data::transaction_manager::ptr tm_;
};
struct era_detail_traits {
typedef era_detail_disk disk_type;
typedef era_detail value_type;
typedef era_detail_ref_counter ref_counter;
static void unpack(disk_type const &disk, value_type &value);
static void pack(value_type const &value, disk_type &disk);
};
}
//----------------------------------------------------------------
#endif