STX B+ Tree Template Classes  0.9
Public Member Functions | Public Attributes | Static Public Attributes | List of all members
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
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
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().


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