foedus::storage::array::SortEntry Struct Reference

Used in sort_batch(). More...

Detailed Description

Used in sort_batch().

• 0-5 bytes: ArrayOffset, the most significant.
• 6-7 bytes: compressed epoch (difference from base_epoch)
• 8-11 bytes: in-epoch-ordinal
• 12-15 bytes: BufferPosition (doesn't have to be sorted together, but for simplicity) Be careful on endian! We use uint128_t to make it easier and faster.

Definition at line 204 of file array_partitioner_impl.cpp.

Public Member Functions
void	set (ArrayOffset offset, uint16_t compressed_epoch, uint32_t in_epoch_ordinal, snapshot::BufferPosition position) __attribute__((always_inline))
ArrayOffset	get_offset () const __attribute__((always_inline))
snapshot::BufferPosition	get_position () const __attribute__((always_inline))

Public Attributes
__uint128_t	data_

Member Function Documentation

ArrayOffset foedus::storage::array::SortEntry::get_offset ( ) const

inline

Definition at line 217 of file array_partitioner_impl.cpp.

References data_.

Referenced by foedus::storage::array::compact_logs().

                                                      {
    return static_cast<ArrayOffset>(data_ >> 80);
  }

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snapshot::BufferPosition foedus::storage::array::SortEntry::get_position ( ) const

inline

Definition at line 220 of file array_partitioner_impl.cpp.

References data_.

Referenced by foedus::storage::array::compact_logs().

                                                                   {
    return static_cast<snapshot::BufferPosition>(data_);
  }

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void foedus::storage::array::SortEntry::set ( ArrayOffset  offset, uint16_t  compressed_epoch, uint32_t  in_epoch_ordinal, snapshot::BufferPosition  position  )

inline

Definition at line 205 of file array_partitioner_impl.cpp.

References ASSERT_ND, data_, and foedus::storage::array::kMaxArrayOffset.

Referenced by foedus::storage::array::prepare_sort_entries().

                                                    {
    ASSERT_ND(offset < kMaxArrayOffset);
    data_
      = static_cast<__uint128_t>(offset) << 80
        | static_cast<__uint128_t>(compressed_epoch) << 64
        | static_cast<__uint128_t>(in_epoch_ordinal) << 32
        | static_cast<__uint128_t>(position);
  }

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Member Data Documentation

__uint128_t foedus::storage::array::SortEntry::data_

Definition at line 223 of file array_partitioner_impl.cpp.

Referenced by get_offset(), get_position(), and set().

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The documentation for this struct was generated from the following file:

• /home/shino/foedus_code/foedus-core/src/foedus/storage/array/array_partitioner_impl.cpp