mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-12 02:23:14 +00:00
56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
|
#pragma once
|
||
|
|
|
||
|
|
#include <DB/Common/HashTable/TwoLevelHashTable.h>
|
||
|
|
#include <DB/Common/HashTable/HashMap.h>
|
||
|
|
|
||
|
|
|
||
|
|
template
|
||
|
|
<
|
||
|
|
typename Key,
|
||
|
|
typename Cell,
|
||
|
|
typename Hash = DefaultHash<Key>,
|
||
|
|
typename Grower = HashTableGrower<8>,
|
||
|
|
typename Allocator = HashTableAllocator
|
||
|
|
>
|
||
|
|
class TwoLevelHashMapTable : public TwoLevelHashTable<Key, Cell, Hash, Grower, Allocator, HashMapTable<Key, Cell, Hash, Grower, Allocator> >
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
typedef Key key_type;
|
||
|
|
typedef typename Cell::Mapped mapped_type;
|
||
|
|
typedef typename Cell::value_type value_type;
|
||
|
|
|
||
|
|
mapped_type & operator[](Key x)
|
||
|
|
{
|
||
|
|
typename TwoLevelHashMapTable::iterator it;
|
||
|
|
bool inserted;
|
||
|
|
this->emplace(x, it, inserted);
|
||
|
|
|
||
|
|
if (!__has_trivial_constructor(mapped_type) && inserted)
|
||
|
|
new(&it->second) mapped_type();
|
||
|
|
|
||
|
|
return it->second;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
template
|
||
|
|
<
|
||
|
|
typename Key,
|
||
|
|
typename Mapped,
|
||
|
|
typename Hash = DefaultHash<Key>,
|
||
|
|
typename Grower = HashTableGrower<8>,
|
||
|
|
typename Allocator = HashTableAllocator
|
||
|
|
>
|
||
|
|
using TwoLevelHashMap = TwoLevelHashMapTable<Key, HashMapCell<Key, Mapped, Hash>, Hash, Grower, Allocator>;
|
||
|
|
|
||
|
|
|
||
|
|
template
|
||
|
|
<
|
||
|
|
typename Key,
|
||
|
|
typename Mapped,
|
||
|
|
typename Hash = DefaultHash<Key>,
|
||
|
|
typename Grower = HashTableGrower<8>,
|
||
|
|
typename Allocator = HashTableAllocator
|
||
|
|
>
|
||
|
|
using TwoLevelHashMapWithSavedHash = TwoLevelHashMapTable<Key, HashMapCellWithSavedHash<Key, Mapped, Hash>, Hash, Grower, Allocator>;
|