Classes

struct _Loser
Internal representation of a _LoserTree element. More...

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

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>

Constructor & Destructor Documentation

__gnu_parallel::_LoserTreeBase::_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.

__gnu_parallel::_LoserTreeBase::~_LoserTreeBase ( ) [inline]

The destructor.

Definition at line 118 of file losertree.h.

Member Function Documentation

int __gnu_parallel::_LoserTreeBase::__get_min_source ( ) [inline]

Returns:: the index of the sequence with the smallest element.

Definition at line 155 of file losertree.h.

void __gnu_parallel::_LoserTreeBase::__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.

Member Data Documentation

_Compare __gnu_parallel::_LoserTreeBase::_M_comp [protected]

_Compare to use.

Definition at line 78 of file losertree.h.

bool __gnu_parallel::_LoserTreeBase::_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 >::_LoserTreeBase(), and __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::__insert_start().

unsigned int __gnu_parallel::_LoserTreeBase::_M_log_k [protected]

log_2{_M_k}

Definition at line 72 of file losertree.h.

Referenced by __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::_LoserTreeBase().

_Loser* __gnu_parallel::_LoserTreeBase::_M_losers [protected]

_LoserTree __elements.

Definition at line 75 of file losertree.h.

Referenced by __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::_LoserTreeBase(), __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::~_LoserTreeBase(), __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::__insert_start(), and __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::__get_min_source().

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

losertree.h