NAME

       __gnu_parallel::_LoserTreeBase< _Tp, _Compare > - Guarded loser/tournament tree.

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)
           The constructor.
       ~_LoserTreeBase ()
           The destructor.
       int __get_min_source ()
       void __insert_start (const _Tp &__key, int __source, bool __sup)
           Initializes the sequence '_M_source' with the element '__key'.

   Protected Attributes
       _Compare _M_comp
           _Compare to use.
       bool _M_first_insert
           State flag that determines whether the _LoserTree is empty.
       unsigned int _M_ik
       unsigned int _M_k
       unsigned int _M_log_k
       _Loser * _M_losers
           _LoserTree __elements.
       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 >::_LoserTreeBase(), and
       __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::__insert_start().

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

Author

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