libstdc++
multiway_merge.h File Reference

Go to the source code of this file.

Classes

class  __gnu_parallel::guarded_iterator< RandomAccessIterator, Comparator >
 Iterator wrapper supporting an implicit supremum at the end of the sequence, dominating all comparisons. More...
struct  __gnu_parallel::loser_tree_traits< T >
 Traits for determining whether the loser tree should use pointers or copies. More...
struct  __gnu_parallel::multiway_merge_3_variant_sentinel_switch< sentinels, RandomAccessIteratorIterator, RandomAccessIterator3, _DifferenceTp, Comparator >
 Switch for 3-way merging with sentinels turned off. More...
struct  __gnu_parallel::multiway_merge_3_variant_sentinel_switch< true, RandomAccessIteratorIterator, RandomAccessIterator3, _DifferenceTp, Comparator >
 Switch for 3-way merging with sentinels turned on. More...
struct  __gnu_parallel::multiway_merge_4_variant_sentinel_switch< sentinels, RandomAccessIteratorIterator, RandomAccessIterator3, _DifferenceTp, Comparator >
 Switch for 4-way merging with sentinels turned off. More...
struct  __gnu_parallel::multiway_merge_4_variant_sentinel_switch< true, RandomAccessIteratorIterator, RandomAccessIterator3, _DifferenceTp, Comparator >
 Switch for 4-way merging with sentinels turned on. More...
struct  __gnu_parallel::multiway_merge_k_variant_sentinel_switch< sentinels, stable, RandomAccessIteratorIterator, RandomAccessIterator3, _DifferenceTp, Comparator >
 Switch for k-way merging with sentinels turned on. More...
struct  __gnu_parallel::multiway_merge_k_variant_sentinel_switch< false, stable, RandomAccessIteratorIterator, RandomAccessIterator3, _DifferenceTp, Comparator >
 Switch for k-way merging with sentinels turned off. More...
struct  __gnu_parallel::sampling_sorter< stable, RandomAccessIterator, StrictWeakOrdering >
 Stable sorting functor. More...
struct  __gnu_parallel::sampling_sorter< false, RandomAccessIterator, StrictWeakOrdering >
 Non-stable sorting functor. More...

Namespaces

namespace  __gnu_parallel

Macros

#define _GLIBCXX_PARALLEL_DECISION(a, b, c, d)
#define _GLIBCXX_PARALLEL_LENGTH(s)
#define _GLIBCXX_PARALLEL_MERGE_3_CASE(a, b, c, c0, c1)
#define _GLIBCXX_PARALLEL_MERGE_4_CASE(a, b, c, d, c0, c1, c2)

Functions

template<typename RandomAccessIteratorPairIterator , typename RandomAccessIteratorOut , typename _DifferenceTp , typename Comparator >
RandomAccessIteratorOut __gnu_parallel::multiway_merge (RandomAccessIteratorPairIterator seqs_begin, RandomAccessIteratorPairIterator seqs_end, RandomAccessIteratorOut target, _DifferenceTp length, Comparator comp, __gnu_parallel::sequential_tag)
template<typename RandomAccessIteratorPairIterator , typename RandomAccessIteratorOut , typename _DifferenceTp , typename Comparator >
RandomAccessIteratorOut __gnu_parallel::multiway_merge (RandomAccessIteratorPairIterator seqs_begin, RandomAccessIteratorPairIterator seqs_end, RandomAccessIteratorOut target, _DifferenceTp length, Comparator comp, __gnu_parallel::exact_tag tag)
template<typename RandomAccessIteratorPairIterator , typename RandomAccessIteratorOut , typename _DifferenceTp , typename Comparator >
RandomAccessIteratorOut __gnu_parallel::multiway_merge (RandomAccessIteratorPairIterator seqs_begin, RandomAccessIteratorPairIterator seqs_end, RandomAccessIteratorOut target, _DifferenceTp length, Comparator comp, __gnu_parallel::sampling_tag tag)
template<typename RandomAccessIteratorPairIterator , typename RandomAccessIteratorOut , typename _DifferenceTp , typename Comparator >
RandomAccessIteratorOut __gnu_parallel::multiway_merge (RandomAccessIteratorPairIterator seqs_begin, RandomAccessIteratorPairIterator seqs_end, RandomAccessIteratorOut target, _DifferenceTp length, Comparator comp, parallel_tag tag=parallel_tag(0))
template<typename RandomAccessIteratorPairIterator , typename RandomAccessIteratorOut , typename _DifferenceTp , typename Comparator >
RandomAccessIteratorOut __gnu_parallel::multiway_merge (RandomAccessIteratorPairIterator seqs_begin, RandomAccessIteratorPairIterator seqs_end, RandomAccessIteratorOut target, _DifferenceTp length, Comparator comp, default_parallel_tag tag)
template<template< typename RAI, typename C > class iterator, typename RandomAccessIteratorIterator , typename RandomAccessIterator3 , typename _DifferenceTp , typename Comparator >
RandomAccessIterator3 __gnu_parallel::multiway_merge_3_variant (RandomAccessIteratorIterator seqs_begin, RandomAccessIteratorIterator seqs_end, RandomAccessIterator3 target, _DifferenceTp length, Comparator comp)
template<template< typename RAI, typename C > class iterator, typename RandomAccessIteratorIterator , typename RandomAccessIterator3 , typename _DifferenceTp , typename Comparator >
RandomAccessIterator3 __gnu_parallel::multiway_merge_4_variant (RandomAccessIteratorIterator seqs_begin, RandomAccessIteratorIterator seqs_end, RandomAccessIterator3 target, _DifferenceTp length, Comparator comp)
template<bool stable, typename RandomAccessIteratorIterator , typename Comparator , typename difference_type >
void __gnu_parallel::multiway_merge_exact_splitting (RandomAccessIteratorIterator seqs_begin, RandomAccessIteratorIterator seqs_end, difference_type length, difference_type total_length, Comparator comp, std::vector< std::pair< difference_type, difference_type > > *pieces)
template<typename LT , typename RandomAccessIteratorIterator , typename RandomAccessIterator3 , typename _DifferenceTp , typename Comparator >
RandomAccessIterator3 __gnu_parallel::multiway_merge_loser_tree (RandomAccessIteratorIterator seqs_begin, RandomAccessIteratorIterator seqs_end, RandomAccessIterator3 target, _DifferenceTp length, Comparator comp)
template<typename UnguardedLoserTree , typename RandomAccessIteratorIterator , typename RandomAccessIterator3 , typename _DifferenceTp , typename Comparator >
RandomAccessIterator3 __gnu_parallel::multiway_merge_loser_tree_sentinel (RandomAccessIteratorIterator seqs_begin, RandomAccessIteratorIterator seqs_end, RandomAccessIterator3 target, const typename std::iterator_traits< typename std::iterator_traits< RandomAccessIteratorIterator >::value_type::first_type >::value_type &sentinel, _DifferenceTp length, Comparator comp)
template<typename LT , typename RandomAccessIteratorIterator , typename RandomAccessIterator3 , typename _DifferenceTp , typename Comparator >
RandomAccessIterator3 __gnu_parallel::multiway_merge_loser_tree_unguarded (RandomAccessIteratorIterator seqs_begin, RandomAccessIteratorIterator seqs_end, RandomAccessIterator3 target, const typename std::iterator_traits< typename std::iterator_traits< RandomAccessIteratorIterator >::value_type::first_type >::value_type &sentinel, _DifferenceTp length, Comparator comp)
template<bool stable, typename RandomAccessIteratorIterator , typename Comparator , typename difference_type >
void __gnu_parallel::multiway_merge_sampling_splitting (RandomAccessIteratorIterator seqs_begin, RandomAccessIteratorIterator seqs_end, difference_type length, difference_type total_length, Comparator comp, std::vector< std::pair< difference_type, difference_type > > *pieces)
template<typename RandomAccessIteratorPairIterator , typename RandomAccessIteratorOut , typename _DifferenceTp , typename Comparator >
RandomAccessIteratorOut __gnu_parallel::multiway_merge_sentinels (RandomAccessIteratorPairIterator seqs_begin, RandomAccessIteratorPairIterator seqs_end, RandomAccessIteratorOut target, _DifferenceTp length, Comparator comp, __gnu_parallel::sequential_tag)
template<typename RandomAccessIteratorPairIterator , typename RandomAccessIteratorOut , typename _DifferenceTp , typename Comparator >
RandomAccessIteratorOut __gnu_parallel::multiway_merge_sentinels (RandomAccessIteratorPairIterator seqs_begin, RandomAccessIteratorPairIterator seqs_end, RandomAccessIteratorOut target, _DifferenceTp length, Comparator comp, __gnu_parallel::exact_tag tag)
template<typename RandomAccessIteratorPairIterator , typename RandomAccessIteratorOut , typename _DifferenceTp , typename Comparator >
RandomAccessIteratorOut __gnu_parallel::multiway_merge_sentinels (RandomAccessIteratorPairIterator seqs_begin, RandomAccessIteratorPairIterator seqs_end, RandomAccessIteratorOut target, _DifferenceTp length, Comparator comp, sampling_tag tag)
template<typename RandomAccessIteratorPairIterator , typename RandomAccessIteratorOut , typename _DifferenceTp , typename Comparator >
RandomAccessIteratorOut __gnu_parallel::multiway_merge_sentinels (RandomAccessIteratorPairIterator seqs_begin, RandomAccessIteratorPairIterator seqs_end, RandomAccessIteratorOut target, _DifferenceTp length, Comparator comp, parallel_tag tag=parallel_tag(0))
template<typename RandomAccessIteratorPairIterator , typename RandomAccessIteratorOut , typename _DifferenceTp , typename Comparator >
RandomAccessIteratorOut __gnu_parallel::multiway_merge_sentinels (RandomAccessIteratorPairIterator seqs_begin, RandomAccessIteratorPairIterator seqs_end, RandomAccessIteratorOut target, _DifferenceTp length, Comparator comp, default_parallel_tag tag)
template<typename RandomAccessIterator , typename Comparator >
bool __gnu_parallel::operator< (guarded_iterator< RandomAccessIterator, Comparator > &bi1, guarded_iterator< RandomAccessIterator, Comparator > &bi2)
template<typename RandomAccessIterator , typename Comparator >
bool __gnu_parallel::operator< (unguarded_iterator< RandomAccessIterator, Comparator > &bi1, unguarded_iterator< RandomAccessIterator, Comparator > &bi2)
template<typename RandomAccessIterator , typename Comparator >
bool __gnu_parallel::operator<= (guarded_iterator< RandomAccessIterator, Comparator > &bi1, guarded_iterator< RandomAccessIterator, Comparator > &bi2)
template<typename RandomAccessIterator , typename Comparator >
bool __gnu_parallel::operator<= (unguarded_iterator< RandomAccessIterator, Comparator > &bi1, unguarded_iterator< RandomAccessIterator, Comparator > &bi2)
template<bool stable, bool sentinels, typename RandomAccessIteratorIterator , typename RandomAccessIterator3 , typename _DifferenceTp , typename Splitter , typename Comparator >
RandomAccessIterator3 __gnu_parallel::parallel_multiway_merge (RandomAccessIteratorIterator seqs_begin, RandomAccessIteratorIterator seqs_end, RandomAccessIterator3 target, Splitter splitter, _DifferenceTp length, Comparator comp, thread_index_t num_threads)
template<bool stable, bool sentinels, typename RandomAccessIteratorIterator , typename RandomAccessIterator3 , typename _DifferenceTp , typename Comparator >
RandomAccessIterator3 __gnu_parallel::sequential_multiway_merge (RandomAccessIteratorIterator seqs_begin, RandomAccessIteratorIterator seqs_end, RandomAccessIterator3 target, const typename std::iterator_traits< typename std::iterator_traits< RandomAccessIteratorIterator >::value_type::first_type >::value_type &sentinel, _DifferenceTp length, Comparator comp)
template<typename RandomAccessIteratorPairIterator , typename RandomAccessIteratorOut , typename _DifferenceTp , typename Comparator >
RandomAccessIteratorOut __gnu_parallel::stable_multiway_merge (RandomAccessIteratorPairIterator seqs_begin, RandomAccessIteratorPairIterator seqs_end, RandomAccessIteratorOut target, _DifferenceTp length, Comparator comp, __gnu_parallel::sequential_tag)
template<typename RandomAccessIteratorPairIterator , typename RandomAccessIteratorOut , typename _DifferenceTp , typename Comparator >
RandomAccessIteratorOut __gnu_parallel::stable_multiway_merge (RandomAccessIteratorPairIterator seqs_begin, RandomAccessIteratorPairIterator seqs_end, RandomAccessIteratorOut target, _DifferenceTp length, Comparator comp, __gnu_parallel::exact_tag tag)
template<typename RandomAccessIteratorPairIterator , typename RandomAccessIteratorOut , typename _DifferenceTp , typename Comparator >
RandomAccessIteratorOut __gnu_parallel::stable_multiway_merge (RandomAccessIteratorPairIterator seqs_begin, RandomAccessIteratorPairIterator seqs_end, RandomAccessIteratorOut target, _DifferenceTp length, Comparator comp, sampling_tag tag)
template<typename RandomAccessIteratorPairIterator , typename RandomAccessIteratorOut , typename _DifferenceTp , typename Comparator >
RandomAccessIteratorOut __gnu_parallel::stable_multiway_merge (RandomAccessIteratorPairIterator seqs_begin, RandomAccessIteratorPairIterator seqs_end, RandomAccessIteratorOut target, _DifferenceTp length, Comparator comp, parallel_tag tag=parallel_tag(0))
template<typename RandomAccessIteratorPairIterator , typename RandomAccessIteratorOut , typename _DifferenceTp , typename Comparator >
RandomAccessIteratorOut __gnu_parallel::stable_multiway_merge (RandomAccessIteratorPairIterator seqs_begin, RandomAccessIteratorPairIterator seqs_end, RandomAccessIteratorOut target, _DifferenceTp length, Comparator comp, default_parallel_tag tag)
template<typename RandomAccessIteratorPairIterator , typename RandomAccessIteratorOut , typename _DifferenceTp , typename Comparator >
RandomAccessIteratorOut __gnu_parallel::stable_multiway_merge_sentinels (RandomAccessIteratorPairIterator seqs_begin, RandomAccessIteratorPairIterator seqs_end, RandomAccessIteratorOut target, _DifferenceTp length, Comparator comp, __gnu_parallel::sequential_tag)
template<typename RandomAccessIteratorPairIterator , typename RandomAccessIteratorOut , typename _DifferenceTp , typename Comparator >
RandomAccessIteratorOut __gnu_parallel::stable_multiway_merge_sentinels (RandomAccessIteratorPairIterator seqs_begin, RandomAccessIteratorPairIterator seqs_end, RandomAccessIteratorOut target, _DifferenceTp length, Comparator comp, __gnu_parallel::exact_tag tag)
template<typename RandomAccessIteratorPairIterator , typename RandomAccessIteratorOut , typename _DifferenceTp , typename Comparator >
RandomAccessIteratorOut __gnu_parallel::stable_multiway_merge_sentinels (RandomAccessIteratorPairIterator seqs_begin, RandomAccessIteratorPairIterator seqs_end, RandomAccessIteratorOut target, _DifferenceTp length, Comparator comp, sampling_tag tag)
template<typename RandomAccessIteratorPairIterator , typename RandomAccessIteratorOut , typename _DifferenceTp , typename Comparator >
RandomAccessIteratorOut __gnu_parallel::stable_multiway_merge_sentinels (RandomAccessIteratorPairIterator seqs_begin, RandomAccessIteratorPairIterator seqs_end, RandomAccessIteratorOut target, _DifferenceTp length, Comparator comp, parallel_tag tag=parallel_tag(0))
template<typename RandomAccessIteratorPairIterator , typename RandomAccessIteratorOut , typename _DifferenceTp , typename Comparator >
RandomAccessIteratorOut __gnu_parallel::stable_multiway_merge_sentinels (RandomAccessIteratorPairIterator seqs_begin, RandomAccessIteratorPairIterator seqs_end, RandomAccessIteratorOut target, _DifferenceTp length, Comparator comp, default_parallel_tag tag)

Detailed Description

Implementation of sequential and parallel multiway merge.

Explanations on the high-speed merging routines in the appendix of

P. Sanders. Fast priority queues for cached memory. ACM Journal of Experimental Algorithmics, 5, 2000.

This file is a GNU parallel extension to the Standard C++ Library.

Definition in file multiway_merge.h.


Macro Definition Documentation