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

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>

include/util/debug.hpp

@@ -1,9 +1,11 @@
 #ifndef OSRM_UTIL_DEBUG_HPP_
 #define OSRM_UTIL_DEBUG_HPP_
 
+#include "extractor/edge_based_edge.hpp"
 #include "extractor/node_data_container.hpp"
 #include "extractor/query_node.hpp"
 #include "guidance/intersection.hpp"
+#include "guidance/turn_instruction.hpp"
 #include "guidance/turn_lane_data.hpp"
 #include "engine/guidance/route_step.hpp"
 #include "util/node_based_graph.hpp"
@@ -186,6 +188,23 @@ inline std::ostream &operator<<(std::ostream &out, const LaneDataVector &turn_la
 }
 }
 }
+
+namespace extractor
+{
+inline std::ostream &operator<<(std::ostream &out, const EdgeBasedEdge &edge)
+{
+    out << " EdgeBasedEdge {";
+    out << " source " << edge.source << ", target: " << edge.target;
+    out << " EdgeBasedEdgeData data {";
+    out << " turn_id: " << edge.data.turn_id << ", weight: " << edge.data.weight;
+    out << " distance: " << edge.data.distance << ", duration: " << edge.data.duration;
+    out << " forward: " << (edge.data.forward == 0 ? "false" : "true")
+        << ", backward: " << (edge.data.backward == 0 ? "false" : "true");
+    out << " }";
+    out << "}";
+    return out;
+}
+}
 }
 
 #endif /*OSRM_ENGINE_GUIDANCE_DEBUG_HPP_*/

include/util/node_based_graph.hpp

@@ -9,6 +9,7 @@
 
 #include <tbb/parallel_sort.h>
 
+#include <iostream>
 #include <memory>
 #include <utility>
 
@@ -20,24 +21,27 @@ namespace util
 struct NodeBasedEdgeData
 {
     NodeBasedEdgeData()
-        : weight(INVALID_EDGE_WEIGHT), duration(INVALID_EDGE_WEIGHT), geometry_id({0, false}),
-          reversed(false), annotation_data(-1)
+        : weight(INVALID_EDGE_WEIGHT), duration(INVALID_EDGE_WEIGHT),
+          distance(INVALID_EDGE_DISTANCE), geometry_id({0, false}), reversed(false),
+          annotation_data(-1)
     {
     }
 
     NodeBasedEdgeData(EdgeWeight weight,
                       EdgeWeight duration,
+                      EdgeDistance distance,
                       GeometryID geometry_id,
                       bool reversed,
                       extractor::NodeBasedEdgeClassification flags,
                       AnnotationID annotation_data)
-        : weight(weight), duration(duration), geometry_id(geometry_id), reversed(reversed),
-          flags(flags), annotation_data(annotation_data)
+        : weight(weight), duration(duration), distance(distance), geometry_id(geometry_id),
+          reversed(reversed), flags(flags), annotation_data(annotation_data)
     {
     }
 
     EdgeWeight weight;
     EdgeWeight duration;
+    EdgeDistance distance;
     GeometryID geometry_id;
     bool reversed : 1;
     extractor::NodeBasedEdgeClassification flags;
@@ -80,11 +84,13 @@ NodeBasedDynamicGraphFromEdges(NodeID number_of_nodes,
            const extractor::NodeBasedEdge &input_edge) {
             output_edge.data.weight = input_edge.weight;
             output_edge.data.duration = input_edge.duration;
+            output_edge.data.distance = input_edge.distance;
             output_edge.data.flags = input_edge.flags;
             output_edge.data.annotation_data = input_edge.annotation_data;
 
             BOOST_ASSERT(output_edge.data.weight > 0);
             BOOST_ASSERT(output_edge.data.duration > 0);
+            BOOST_ASSERT(output_edge.data.distance >= 0);
         });
 
     tbb::parallel_sort(edges_list.begin(), edges_list.end());

include/util/typedefs.hpp

@@ -113,6 +113,7 @@ static const SegmentWeight MAX_SEGMENT_WEIGHT = INVALID_SEGMENT_WEIGHT - 1;
 static const SegmentDuration MAX_SEGMENT_DURATION = INVALID_SEGMENT_DURATION - 1;
 static const EdgeWeight INVALID_EDGE_WEIGHT = std::numeric_limits<EdgeWeight>::max();
 static const EdgeDuration MAXIMAL_EDGE_DURATION = std::numeric_limits<EdgeDuration>::max();
+static const EdgeDistance MAXIMAL_EDGE_DISTANCE = std::numeric_limits<EdgeDistance>::max();
 static const TurnPenalty INVALID_TURN_PENALTY = std::numeric_limits<TurnPenalty>::max();
 static const EdgeDistance INVALID_EDGE_DISTANCE = std::numeric_limits<EdgeDistance>::max();