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Add .reserve(...) to assembleGeometry function (#6983)

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Siarhei Fedartsou 2024-07-09 21:12:47 +03:00 committed by GitHub
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1
CHANGELOG.md
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@ -24,6 +24,7 @@
- NodeJS: - NodeJS:
- CHANGED: Use node-api instead of NAN. [#6452](https://github.com/Project-OSRM/osrm-backend/pull/6452) - CHANGED: Use node-api instead of NAN. [#6452](https://github.com/Project-OSRM/osrm-backend/pull/6452)
- Misc: - Misc:
- CHANGED: Add .reserve(...) to assembleGeometry function. [#6983](https://github.com/Project-OSRM/osrm-backend/pull/6983)
- CHANGED: Get rid of boost::optional leftovers. [#6977](https://github.com/Project-OSRM/osrm-backend/pull/6977) - CHANGED: Get rid of boost::optional leftovers. [#6977](https://github.com/Project-OSRM/osrm-backend/pull/6977)
- CHANGED: Use Link Time Optimisation whenever possible. [#6967](https://github.com/Project-OSRM/osrm-backend/pull/6967) - CHANGED: Use Link Time Optimisation whenever possible. [#6967](https://github.com/Project-OSRM/osrm-backend/pull/6967)
- CHANGED: Use struct instead of tuple to define UnpackedPath. [#6974](https://github.com/Project-OSRM/osrm-backend/pull/6974) - CHANGED: Use struct instead of tuple to define UnpackedPath. [#6974](https://github.com/Project-OSRM/osrm-backend/pull/6974)

8
include/engine/guidance/assemble_geometry.hpp
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@ -37,6 +37,14 @@ inline LegGeometry assembleGeometry(const datafacade::BaseDataFacade &facade,
{ {
LegGeometry geometry; LegGeometry geometry;
// each container will at most have `leg_data.size()` + 1/2 elements in it
// these additional 1/2 elements come from processing of very first and very last segment
geometry.locations.reserve(leg_data.size() + 2);
geometry.segment_distances.reserve(leg_data.size() + 1);
geometry.segment_offsets.reserve(leg_data.size() + 1);
geometry.annotations.reserve(leg_data.size() + 1);
geometry.node_ids.reserve(leg_data.size() + 2);
// segment 0 first and last // segment 0 first and last
geometry.segment_offsets.push_back(0); geometry.segment_offsets.push_back(0);
geometry.locations.push_back(source_node.location); geometry.locations.push_back(source_node.location);