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Replace dynamic distance calculation for table plugin with pre-calculated distances on shortcuts, avoiding unpacking cost.

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Adds approx 10% to total data size.  Speeds up large table requests by 2 orders of magnitude.

Co-authored-by: Kajari Ghosh <ghoshkaj@gmail.com>
This commit is contained in:
Daniel Patterson
2018-10-29 21:47:49 -07:00
parent 5327f8da4e
commit 498259b220
48 changed files with 767 additions and 995 deletions
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unit_tests/contractor/contracted_edge_container.cpp
+28 -27
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@@ -17,7 +17,8 @@ bool operator!=(const QueryEdge &lhs, const QueryEdge &rhs) { return !(lhs == rh
std::ostream &operator<<(std::ostream &out, const QueryEdge::EdgeData &data)
{
out << "{" << data.turn_id << ", " << data.shortcut << ", " << data.duration << ", "
<< data.weight << ", " << data.forward << ", " << data.backward << "}";
<< data.distance << ", " << data.weight << ", " << data.forward << ", " << data.backward
<< "}";
return out;
}
@@ -36,31 +37,31 @@ BOOST_AUTO_TEST_CASE(merge_edge_of_multiple_graph)
ContractedEdgeContainer container;
std::vector<QueryEdge> edges;
edges.push_back(QueryEdge{0, 1, {1, false, 3, 6, true, false}});
edges.push_back(QueryEdge{1, 2, {2, false, 3, 6, true, false}});
edges.push_back(QueryEdge{2, 0, {3, false, 3, 6, false, true}});
edges.push_back(QueryEdge{2, 1, {4, false, 3, 6, false, true}});
edges.push_back(QueryEdge{0, 1, {1, false, 3, 3, 6, true, false}});
edges.push_back(QueryEdge{1, 2, {2, false, 3, 3, 6, true, false}});
edges.push_back(QueryEdge{2, 0, {3, false, 3, 3, 6, false, true}});
edges.push_back(QueryEdge{2, 1, {4, false, 3, 3, 6, false, true}});
container.Insert(edges);
edges.clear();
edges.push_back(QueryEdge{0, 1, {1, false, 3, 6, true, false}});
edges.push_back(QueryEdge{1, 2, {2, false, 3, 6, true, false}});
edges.push_back(QueryEdge{2, 0, {3, false, 12, 24, false, true}});
edges.push_back(QueryEdge{2, 1, {4, false, 12, 24, false, true}});
edges.push_back(QueryEdge{0, 1, {1, false, 3, 3, 6, true, false}});
edges.push_back(QueryEdge{1, 2, {2, false, 3, 3, 6, true, false}});
edges.push_back(QueryEdge{2, 0, {3, false, 12, 12, 24, false, true}});
edges.push_back(QueryEdge{2, 1, {4, false, 12, 12, 24, false, true}});
container.Merge(edges);
edges.clear();
edges.push_back(QueryEdge{1, 4, {5, false, 3, 6, true, false}});
edges.push_back(QueryEdge{1, 4, {5, false, 3, 3, 6, true, false}});
container.Merge(edges);
std::vector<QueryEdge> reference_edges;
reference_edges.push_back(QueryEdge{0, 1, {1, false, 3, 6, true, false}});
reference_edges.push_back(QueryEdge{1, 2, {2, false, 3, 6, true, false}});
reference_edges.push_back(QueryEdge{1, 4, {5, false, 3, 6, true, false}});
reference_edges.push_back(QueryEdge{2, 0, {3, false, 3, 6, false, true}});
reference_edges.push_back(QueryEdge{2, 0, {3, false, 12, 24, false, true}});
reference_edges.push_back(QueryEdge{2, 1, {4, false, 3, 6, false, true}});
reference_edges.push_back(QueryEdge{2, 1, {4, false, 12, 24, false, true}});
reference_edges.push_back(QueryEdge{0, 1, {1, false, 3, 3, 6, true, false}});
reference_edges.push_back(QueryEdge{1, 2, {2, false, 3, 3, 6, true, false}});
reference_edges.push_back(QueryEdge{1, 4, {5, false, 3, 3, 6, true, false}});
reference_edges.push_back(QueryEdge{2, 0, {3, false, 3, 3, 6, false, true}});
reference_edges.push_back(QueryEdge{2, 0, {3, false, 12, 12, 24, false, true}});
reference_edges.push_back(QueryEdge{2, 1, {4, false, 3, 3, 6, false, true}});
reference_edges.push_back(QueryEdge{2, 1, {4, false, 12, 12, 24, false, true}});
CHECK_EQUAL_COLLECTIONS(container.edges, reference_edges);
auto filters = container.MakeEdgeFilters();
@@ -78,22 +79,22 @@ BOOST_AUTO_TEST_CASE(merge_edge_of_multiple_disjoint_graph)
ContractedEdgeContainer container;
std::vector<QueryEdge> edges;
edges.push_back(QueryEdge{0, 1, {1, false, 3, 6, true, false}});
edges.push_back(QueryEdge{1, 2, {2, false, 3, 6, true, false}});
edges.push_back(QueryEdge{2, 0, {3, false, 12, 24, false, true}});
edges.push_back(QueryEdge{2, 1, {4, false, 12, 24, false, true}});
edges.push_back(QueryEdge{0, 1, {1, false, 3, 3, 6, true, false}});
edges.push_back(QueryEdge{1, 2, {2, false, 3, 3, 6, true, false}});
edges.push_back(QueryEdge{2, 0, {3, false, 12, 12, 24, false, true}});
edges.push_back(QueryEdge{2, 1, {4, false, 12, 12, 24, false, true}});
container.Merge(edges);
edges.clear();
edges.push_back(QueryEdge{1, 4, {5, false, 3, 6, true, false}});
edges.push_back(QueryEdge{1, 4, {5, false, 3, 3, 6, true, false}});
container.Merge(edges);
std::vector<QueryEdge> reference_edges;
reference_edges.push_back(QueryEdge{0, 1, {1, false, 3, 6, true, false}});
reference_edges.push_back(QueryEdge{1, 2, {2, false, 3, 6, true, false}});
reference_edges.push_back(QueryEdge{1, 4, {5, false, 3, 6, true, false}});
reference_edges.push_back(QueryEdge{2, 0, {3, false, 12, 24, false, true}});
reference_edges.push_back(QueryEdge{2, 1, {4, false, 12, 24, false, true}});
reference_edges.push_back(QueryEdge{0, 1, {1, false, 3, 3, 6, true, false}});
reference_edges.push_back(QueryEdge{1, 2, {2, false, 3, 3, 6, true, false}});
reference_edges.push_back(QueryEdge{1, 4, {5, false, 3, 3, 6, true, false}});
reference_edges.push_back(QueryEdge{2, 0, {3, false, 12, 12, 24, false, true}});
reference_edges.push_back(QueryEdge{2, 1, {4, false, 12, 12, 24, false, true}});
CHECK_EQUAL_COLLECTIONS(container.edges, reference_edges);
auto filters = container.MakeEdgeFilters();
unit_tests/contractor/graph_contractor.cpp
+1 -1
View File
@@ -89,7 +89,7 @@ BOOST_AUTO_TEST_CASE(contract_graph)
reference_graph.DeleteEdgesTo(1, 3);
reference_graph.DeleteEdgesTo(4, 3);
// Insert shortcut
reference_graph.InsertEdge(4, 1, {2, 4, 3, 0, true, true, false});
reference_graph.InsertEdge(4, 1, {2, 4, 1.0, 3, 0, true, true, false});
/* After contracting 4:
*
unit_tests/contractor/helper.hpp
+6 -2
View File
@@ -20,15 +20,19 @@ inline contractor::ContractorGraph makeGraph(const std::vector<TestEdge> &edges)
unsigned target;
int weight;
std::tie(start, target, weight) = edge;
int duration = weight * 2;
float distance = 1.0;
max_id = std::max(std::max(start, target), max_id);
input_edges.push_back(contractor::ContractorEdge{
start,
target,
contractor::ContractorEdgeData{weight, weight * 2, id++, 0, false, true, false}});
contractor::ContractorEdgeData{
weight, duration, distance, id++, 0, false, true, false}});
input_edges.push_back(contractor::ContractorEdge{
target,
start,
contractor::ContractorEdgeData{weight, weight * 2, id++, 0, false, false, true}});
contractor::ContractorEdgeData{
weight, duration, distance, id++, 0, false, false, true}});
}
std::sort(input_edges.begin(), input_edges.end());