thevar1able/ClickHouse
1
0
Fork 0
mirror of https://github.com/ClickHouse/ClickHouse.git synced 2024-11-24 16:42:05 +00:00
Code Issues Packages Projects Releases Wiki Activity

Updated implementation

Browse Source
This commit is contained in:
Maksim Kita 2022-02-08 11:56:13 +00:00
parent 42792dec48
commit 4a18e627ec
1 changed files with 5 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
base/base/sort.h
View File

@ -2,7 +2,7 @@
#include <pdqsort.h>
#ifdef NDEBUG
// #ifdef NDEBUG
#include <pcg_random.hpp>
#include <base/getThreadId.h>
@ -53,12 +53,12 @@ void shuffle(RandomIt first, RandomIt last)
std::shuffle(first, last, rng);
}
#else
// #else
template <typename Comparator>
using ComparatorWrapper = Comparator;
// template <typename Comparator>
// using ComparatorWrapper = Comparator;
#endif
// #endif
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wold-style-cast"
@ -74,33 +74,25 @@ void nth_element(RandomIt first, RandomIt nth, RandomIt last)
comparator compare;
ComparatorWrapper<comparator> compare_wrapper = compare;
#ifdef NDEBUG
::shuffle(first, last);
#endif
::miniselect::floyd_rivest_select(first, nth, last, compare_wrapper);
#ifdef NDEBUG
::shuffle(first, nth);
if (nth != last)
::shuffle(nth + 1, last);
#endif
}
template <typename RandomIt, typename Compare>
void partial_sort(RandomIt first, RandomIt middle, RandomIt last, Compare compare)
{
#ifdef NDEBUG
::shuffle(first, last);
#endif
ComparatorWrapper<Compare> compare_wrapper = compare;
::miniselect::floyd_rivest_partial_sort(first, middle, last, compare_wrapper);
#ifdef NDEBUG
::shuffle(middle, last);
#endif
}
template <typename RandomIt>
@ -117,9 +109,7 @@ void partial_sort(RandomIt first, RandomIt middle, RandomIt last)
template <typename RandomIt, typename Compare>
void sort(RandomIt first, RandomIt last, Compare compare)
{
#ifdef NDEBUG
::shuffle(first, last);
#endif
ComparatorWrapper<Compare> compare_wrapper = compare;
::pdqsort(first, last, compare_wrapper);