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Use ArrayStorage for boundary nodes to optimize MLD

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For the MLD algorithm we can partition the NodeID range into boundary
and non-boundary nodes. Since there are only we boundary nodes we can
use the ArrayStorage for those yielding much faster query times.
This commit is contained in:
Patrick Niklaus
2018-04-08 16:37:08 +00:00
committed by Patrick Niklaus
parent 7edf0f218c
commit bf2b45120a
12 changed files with 151 additions and 24 deletions
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src/engine/routing_algorithms/map_matching.cpp
+20 -3
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@@ -46,6 +46,25 @@ unsigned getMedianSampleTime(const std::vector<unsigned> &timestamps)
std::nth_element(first_elem, median, sample_times.end());
return *median;
}
template <typename Algorithm>
inline void initializeHeap(SearchEngineData<Algorithm> &engine_working_data,
const DataFacade<Algorithm> &facade)
{
const auto nodes_number = facade.GetNumberOfNodes();
engine_working_data.InitializeOrClearFirstThreadLocalStorage(nodes_number);
}
template <>
inline void initializeHeap<mld::Algorithm>(SearchEngineData<mld::Algorithm> &engine_working_data,
const DataFacade<mld::Algorithm> &facade)
{
const auto nodes_number = facade.GetNumberOfNodes();
const auto border_nodes_number = facade.GetMaxBorderNodeID() + 1;
engine_working_data.InitializeOrClearFirstThreadLocalStorage(nodes_number, border_nodes_number);
}
}
template <typename Algorithm>
@@ -131,9 +150,7 @@ SubMatchingList mapMatching(SearchEngineData<Algorithm> &engine_working_data,
return sub_matchings;
}
const auto nodes_number = facade.GetNumberOfNodes();
engine_working_data.InitializeOrClearFirstThreadLocalStorage(nodes_number);
initializeHeap(engine_working_data, facade);
auto &forward_heap = *engine_working_data.forward_heap_1;
auto &reverse_heap = *engine_working_data.reverse_heap_1;