stx::btree< _Key, _Data, _Value, _Compare, _Traits, _Duplicates, _Alloc, _UsedAsSet >::tree_stats Struct Reference

A small struct containing basic statistics about the B+ tree. More...

#include <btree.h>

Public Member Functions
	tree_stats ()
	Zero initialized. More...
size_type	nodes () const
	Return the total number of nodes. More...
double	avgfill_leaves () const
	Return the average fill of leaves. More...

Public Attributes
size_type	itemcount
	Number of items in the B+ tree. More...
size_type	leaves
	Number of leaves in the B+ tree. More...
size_type	innernodes
	Number of inner nodes in the B+ tree. More...

Static Public Attributes
static const unsigned short	leafslots = btree_self::leafslotmax
	Base B+ tree parameter: The number of key/data slots in each leaf. More...
static const unsigned short	innerslots = btree_self::innerslotmax
	Base B+ tree parameter: The number of key slots in each inner node. More...

Detailed Description

template<typename _Key, typename _Data, typename _Value = std::pair<_Key, _Data>, typename _Compare = std::less<_Key>, typename _Traits = btree_default_map_traits<_Key, _Data>, bool _Duplicates = false, typename _Alloc = std::allocator<_Value>, bool _UsedAsSet = false>
struct stx::btree< _Key, _Data, _Value, _Compare, _Traits, _Duplicates, _Alloc, _UsedAsSet >::tree_stats

A small struct containing basic statistics about the B+ tree.

It can be fetched using get_stats().

Definition at line 1249 of file btree.h.

Constructor & Destructor Documentation

template<typename _Key, typename _Data, typename _Value = std::pair<_Key, _Data>, typename _Compare = std::less<_Key>, typename _Traits = btree_default_map_traits<_Key, _Data>, bool _Duplicates = false, typename _Alloc = std::allocator<_Value>, bool _UsedAsSet = false>

stx::btree< _Key, _Data, _Value, _Compare, _Traits, _Duplicates, _Alloc, _UsedAsSet >::tree_stats::tree_stats ( )

inline

Zero initialized.

Definition at line 1267 of file btree.h.

Member Function Documentation

template<typename _Key, typename _Data, typename _Value = std::pair<_Key, _Data>, typename _Compare = std::less<_Key>, typename _Traits = btree_default_map_traits<_Key, _Data>, bool _Duplicates = false, typename _Alloc = std::allocator<_Value>, bool _UsedAsSet = false>

double stx::btree< _Key, _Data, _Value, _Compare, _Traits, _Duplicates, _Alloc, _UsedAsSet >::tree_stats::avgfill_leaves ( ) const

inline

Return the average fill of leaves.

Definition at line 1280 of file btree.h.

References stx::btree< _Key, _Data, _Value, _Compare, _Traits, _Duplicates, _Alloc, _UsedAsSet >::tree_stats::itemcount.

template<typename _Key, typename _Data, typename _Value = std::pair<_Key, _Data>, typename _Compare = std::less<_Key>, typename _Traits = btree_default_map_traits<_Key, _Data>, bool _Duplicates = false, typename _Alloc = std::allocator<_Value>, bool _UsedAsSet = false>

size_type stx::btree< _Key, _Data, _Value, _Compare, _Traits, _Duplicates, _Alloc, _UsedAsSet >::tree_stats::nodes ( ) const

inline

Return the total number of nodes.

Definition at line 1274 of file btree.h.

References stx::btree< _Key, _Data, _Value, _Compare, _Traits, _Duplicates, _Alloc, _UsedAsSet >::tree_stats::leaves.

Member Data Documentation

template<typename _Key, typename _Data, typename _Value = std::pair<_Key, _Data>, typename _Compare = std::less<_Key>, typename _Traits = btree_default_map_traits<_Key, _Data>, bool _Duplicates = false, typename _Alloc = std::allocator<_Value>, bool _UsedAsSet = false>

size_type stx::btree< _Key, _Data, _Value, _Compare, _Traits, _Duplicates, _Alloc, _UsedAsSet >::tree_stats::innernodes

Number of inner nodes in the B+ tree.

Definition at line 1258 of file btree.h.

template<typename _Key, typename _Data, typename _Value = std::pair<_Key, _Data>, typename _Compare = std::less<_Key>, typename _Traits = btree_default_map_traits<_Key, _Data>, bool _Duplicates = false, typename _Alloc = std::allocator<_Value>, bool _UsedAsSet = false>

const unsigned short stx::btree< _Key, _Data, _Value, _Compare, _Traits, _Duplicates, _Alloc, _UsedAsSet >::tree_stats::innerslots = btree_self::innerslotmax

static

Base B+ tree parameter: The number of key slots in each inner node.

Definition at line 1264 of file btree.h.

template<typename _Key, typename _Data, typename _Value = std::pair<_Key, _Data>, typename _Compare = std::less<_Key>, typename _Traits = btree_default_map_traits<_Key, _Data>, bool _Duplicates = false, typename _Alloc = std::allocator<_Value>, bool _UsedAsSet = false>

size_type stx::btree< _Key, _Data, _Value, _Compare, _Traits, _Duplicates, _Alloc, _UsedAsSet >::tree_stats::itemcount

Number of items in the B+ tree.

Definition at line 1252 of file btree.h.

Referenced by stx::btree< _Key, _Data, _Value, _Compare, _Traits, _Duplicates, _Alloc, _UsedAsSet >::tree_stats::avgfill_leaves().

template<typename _Key, typename _Data, typename _Value = std::pair<_Key, _Data>, typename _Compare = std::less<_Key>, typename _Traits = btree_default_map_traits<_Key, _Data>, bool _Duplicates = false, typename _Alloc = std::allocator<_Value>, bool _UsedAsSet = false>

const unsigned short stx::btree< _Key, _Data, _Value, _Compare, _Traits, _Duplicates, _Alloc, _UsedAsSet >::tree_stats::leafslots = btree_self::leafslotmax

static

Base B+ tree parameter: The number of key/data slots in each leaf.

Definition at line 1261 of file btree.h.

template<typename _Key, typename _Data, typename _Value = std::pair<_Key, _Data>, typename _Compare = std::less<_Key>, typename _Traits = btree_default_map_traits<_Key, _Data>, bool _Duplicates = false, typename _Alloc = std::allocator<_Value>, bool _UsedAsSet = false>

size_type stx::btree< _Key, _Data, _Value, _Compare, _Traits, _Duplicates, _Alloc, _UsedAsSet >::tree_stats::leaves

Number of leaves in the B+ tree.

Definition at line 1255 of file btree.h.

Referenced by stx::btree< _Key, _Data, _Value, _Compare, _Traits, _Duplicates, _Alloc, _UsedAsSet >::tree_stats::nodes().

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

• stx/btree.h