Thrill  0.1
Public Types | Public Member Functions | Private Attributes | List of all members
BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator > Class Template Reference

Detailed Description

template<typename ValueType, typename ReaderIterator, typename Comparator>
class thrill::core::BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >

Definition at line 25 of file buffered_multiway_merge.hpp.

#include <buffered_multiway_merge.hpp>

Public Types

using LoserTreeType = tlx::LoserTree< false, ValueType, Comparator >
 
using Reader = typename std::iterator_traits< ReaderIterator >::value_type
 

Public Member Functions

 BufferedMultiwayMergeTree (ReaderIterator readers_begin, ReaderIterator readers_end, const Comparator &comp)
 
bool HasNext () const
 
const ValueType & Top ()
 
bool Update ()
 

Private Attributes

std::vector< std::pair< bool, ValueType > > current_
 current values in each input (exist flag, value) More...
 
LoserTreeType lt_
 
unsigned num_inputs_
 
ReaderIterator readers_
 
size_t remaining_inputs_
 

Member Typedef Documentation

◆ LoserTreeType

using LoserTreeType = tlx::LoserTree< false, ValueType, Comparator>

Definition at line 31 of file buffered_multiway_merge.hpp.

◆ Reader

using Reader = typename std::iterator_traits<ReaderIterator>::value_type

Definition at line 28 of file buffered_multiway_merge.hpp.

Constructor & Destructor Documentation

◆ BufferedMultiwayMergeTree()

BufferedMultiwayMergeTree ( ReaderIterator  readers_begin,
ReaderIterator  readers_end,
const Comparator &  comp 
)
inline

Definition at line 33 of file buffered_multiway_merge.hpp.

References BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::current_, BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::HasNext(), BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::lt_, BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::num_inputs_, BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::readers_, BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::remaining_inputs_, and TLX_LIKELY.

Member Function Documentation

◆ HasNext()

bool HasNext ( ) const
inline

Definition at line 59 of file buffered_multiway_merge.hpp.

References BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::remaining_inputs_.

Referenced by BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::BufferedMultiwayMergeTree(), and BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::Update().

◆ Top()

const ValueType& Top ( )
inline

Definition at line 63 of file buffered_multiway_merge.hpp.

References BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::current_, and BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::lt_.

◆ Update()

bool Update ( )
inline

Definition at line 67 of file buffered_multiway_merge.hpp.

References BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::current_, BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::HasNext(), BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::lt_, BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::readers_, BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::remaining_inputs_, and TLX_LIKELY.

Member Data Documentation

◆ current_

std::vector<std::pair<bool, ValueType> > current_
private

current values in each input (exist flag, value)

Definition at line 92 of file buffered_multiway_merge.hpp.

Referenced by BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::BufferedMultiwayMergeTree(), BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::Top(), and BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::Update().

◆ lt_

LoserTreeType lt_
private

Definition at line 90 of file buffered_multiway_merge.hpp.

Referenced by BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::BufferedMultiwayMergeTree(), BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::Top(), and BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::Update().

◆ num_inputs_

unsigned num_inputs_
private

Definition at line 87 of file buffered_multiway_merge.hpp.

Referenced by BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::BufferedMultiwayMergeTree().

◆ readers_

ReaderIterator readers_
private

Definition at line 86 of file buffered_multiway_merge.hpp.

Referenced by BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::BufferedMultiwayMergeTree(), and BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::Update().

◆ remaining_inputs_

size_t remaining_inputs_
private

Definition at line 88 of file buffered_multiway_merge.hpp.

Referenced by BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::BufferedMultiwayMergeTree(), BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::HasNext(), and BufferedMultiwayMergeTree< ValueType, ReaderIterator, Comparator >::Update().

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