ColumnBitmap Class Reference

#include <ColumnarResults.h>

Public Member Functions
	ColumnBitmap (const size_t num_elements_per_bank, size_t num_banks)
bool	get (const size_t index, const size_t bank_index) const
void	set (const size_t index, const size_t bank_index, const bool val)

Private Attributes
std::vector< std::vector< bool > >	bitmaps_

Detailed Description

A helper data structure to track non-empty entries in the input buffer Currently only used for direct columnarization with columnar outputs. Each bank is assigned to a thread so that concurrent updates of the data structure is non-blocking.

Definition at line 40 of file ColumnarResults.h.

Constructor & Destructor Documentation

ColumnBitmap::ColumnBitmap ( const size_t  num_elements_per_bank, size_t  num_banks  )

inline

Definition at line 42 of file ColumnarResults.h.

      : bitmaps_(num_banks, std::vector<bool>(num_elements_per_bank, false)) {}

Member Function Documentation

bool ColumnBitmap::get ( const size_t  index, const size_t  bank_index  ) const

inline

Definition at line 45 of file ColumnarResults.h.

References bitmaps_, and CHECK_LT.

Referenced by ColumnarResults::compactAndCopyEntriesWithTargetSkipping().

                                                                     {
    CHECK_LT(bank_index, bitmaps_.size());
    CHECK_LT(index, bitmaps_[bank_index].size());
    return bitmaps_[bank_index][index];
  }

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void ColumnBitmap::set ( const size_t  index, const size_t  bank_index, const bool  val  )

inline

Definition at line 51 of file ColumnarResults.h.

References bitmaps_, and CHECK_LT.

Referenced by ColumnarResults::locateAndCountEntries().

                                                                               {
    CHECK_LT(bank_index, bitmaps_.size());
    CHECK_LT(index, bitmaps_[bank_index].size());
    bitmaps_[bank_index][index] = val;
  }

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Member Data Documentation

std::vector<std::vector<bool> > ColumnBitmap::bitmaps_

private

Definition at line 58 of file ColumnarResults.h.

Referenced by get(), and set().

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

• /home/jenkins-slave/workspace/core-os-doxygen/QueryEngine/ColumnarResults.h