Currently OSRM only supports turn restrictions with a single via-node or one
via-way. OSM allows for multiple via-ways to represent longer and more
complex restrictions.
This PR extends the use of duplicate nodes for representng via-way turn
restrictions to also support multi via-way restrictions. Effectively, this
increases the edge-based graph size by the number of edges in multi via-way
restrictions. However, given the low number of these restrictions it
has little effect on total graph size.
In addition, we add a new step in the extraction phase that constructs
a restriction graph to support more complex relationships between restrictions,
such as nested restrictions and overlapping restrictions.
Includes all edges in the rtree, but adds an `is_startpoint` flag to each. Most plugin behaviour remains unchanged (non-startpoint edges aren't used as snapping candidates), but for map matching, we allow snapping to any edge. This fixes map-matching across previously non-is_startpoint edges, like ferries, private service roads, and a few others.
Make entry points of individual pipeline stages responsible for
configuring the task scheduler with requested number of threads
passed in corresponding configuration bundle (ie. follow extractor).
Pool instance has been removed from Reader ctor parameters
list in PR #4438, presumably unintentionally.
It is required to prevent potential deadlock during
Pool shutdown as explained in PR #4452.
- separates node-based graph creation and compression from edge-based graph creation
- moves usage of edge-based node data-container to pre-processing as well, unifying access to node-based data
- single struct instead of separate vectors for annotation data in engine (single place of modification)
Advantages:
* Allows to use Pool configured with user-preferred number of threads.
* If libosmium used in a shared library, this helps to prevent potential
deadlock during Pool shutdown at (after) shared library unloading.
See https://github.com/osmcode/libosmium/pull/214
Requires libosmium 2.13.0
