Scroll to navigation

__gnu_parallel::_LoserTreeBase< _Tp, _Compare >(3cxx) __gnu_parallel::_LoserTreeBase< _Tp, _Compare >(3cxx)

NAME

__gnu_parallel::_LoserTreeBase< _Tp, _Compare > -

SYNOPSIS

Inherited by __gnu_parallel::_LoserTree< __stable, _Tp, _Compare >, and __gnu_parallel::_LoserTree< false, _Tp, _Compare >.

Classes


struct _Loser
 
Internal representation of a _LoserTree element.

Public Member Functions


_LoserTreeBase (unsigned int __k, _Compare __comp)
 
~_LoserTreeBase ()
 
int __get_min_source ()
 
void __insert_start (const _Tp &__key, int __source, bool __sup)
 

Protected Attributes


_Compare _M_comp
 
bool _M_first_insert
 
unsigned int _M_ik
 
unsigned int _M_k
 
unsigned int _M_log_k
 
_Loser * _M_losers
 
unsigned int _M_offset
 

Detailed Description

 

template<typename _Tp, typename _Compare>class __gnu_parallel::_LoserTreeBase< _Tp, _Compare >

Guarded loser/tournament tree.
 
The smallest element is at the top.
Guarding is done explicitly through one flag _M_sup per element, inf is not needed due to a better initialization routine. This is a well-performing variant.
Parameters:
_Tp the element type
 
_Compare the comparator to use, defaults to std::less<_Tp>
 
Definition at line 55 of file losertree.h.

Constructor & Destructor Documentation

template<typename _Tp , typename _Compare > __gnu_parallel::_LoserTreeBase< _Tp, _Compare >:: _LoserTreeBase (unsigned int__k, _Compare__comp) [inline]

The constructor. Parameters:
__k The number of sequences to merge.
 
__comp The comparator to use.
 
Definition at line 94 of file losertree.h.
References __gnu_parallel::__rd_log2(), __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::_M_first_insert, __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::_M_log_k, and __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::_M_losers.

template<typename _Tp , typename _Compare > __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::~ _LoserTreeBase () [inline]

The destructor.
Definition at line 118 of file losertree.h.
References __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::_M_losers.

Member Function Documentation

template<typename _Tp , typename _Compare > int __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::__get_min_source () [inline]

Returns:
the index of the sequence with the smallest element.
 
Definition at line 155 of file losertree.h.
References __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::_M_losers, and __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::_Loser::_M_source.

template<typename _Tp , typename _Compare > void __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::__insert_start (const _Tp &__key, int__source, bool__sup) [inline]

Initializes the sequence '_M_source' with the element '__key'. Parameters:
__key the element to insert
 
__source __index of the __source __sequence
 
__sup flag that determines whether the value to insert is an explicit __supremum.
 
Definition at line 134 of file losertree.h.
References __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::_M_first_insert, __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::_Loser::_M_key, __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::_M_losers, __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::_Loser::_M_source, and __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::_Loser::_M_sup.

Member Data Documentation

template<typename _Tp , typename _Compare > _Compare __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::_M_comp [protected]

_Compare to use.
Definition at line 78 of file losertree.h.

template<typename _Tp , typename _Compare > bool __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::_M_first_insert [protected]

State flag that determines whether the _LoserTree is empty. Only used for building the _LoserTree.
Definition at line 85 of file losertree.h.
Referenced by __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::__insert_start(), and __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::_LoserTreeBase().

template<typename _Tp , typename _Compare > unsigned int __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::_M_log_k [protected]

log_2{_M_k}
Definition at line 72 of file losertree.h.
Referenced by __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::_LoserTreeBase().

template<typename _Tp , typename _Compare > _Loser* __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::_M_losers [protected]

_LoserTree __elements.
Definition at line 75 of file losertree.h.
Referenced by __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::__get_min_source(), __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::__insert_start(), __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::_LoserTreeBase(), and __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::~_LoserTreeBase().
 

Author

Generated automatically by Doxygen for libstdc++ from the source code.
Tue Nov 27 2012 libstdc++