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libstdc++
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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 |
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.
| _Tp | the element type |
| _Compare | the comparator to use, defaults to std::less<_Tp> |
Definition at line 55 of file losertree.h.
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inline |
The constructor.
| __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.
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inline |
The destructor.
Definition at line 118 of file losertree.h.
References __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::_M_losers.
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inline |
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.
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inline |
Initializes the sequence "_M_source" with the element "__key".
| __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.
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_Compare to use.
Definition at line 78 of file losertree.h.
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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().
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protected |
log_2{_M_k}
Definition at line 72 of file losertree.h.
Referenced by __gnu_parallel::_LoserTreeBase< _Tp, _Compare >::_LoserTreeBase().
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_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().