map.osrm.properties.md

.osrm.properties

Contains Lua profile properties that affect run time queries.

List

tar -tvf nevada-latest.osrm.properties
-rw-rw-r-- 0/0               8 1970-01-01 00:00 osrm_fingerprint.meta
-rw-rw-r-- 0/0               8 1970-01-01 00:00 /common/properties.meta
-rw-rw-r-- 0/0            2344 1970-01-01 00:00 /common/properties

osrm_fingerprint.meta

• osrm_fingerprint.meta

/common/properties, /common/properties.meta

Layout

Implementation

The data stored in /common/properties is the struct ProfileProperties in C++ implementation.

• struct ProfileProperties's data values are come from Lua properties or default values if it doesn't present in Lua. But be aware that some details maybe special, e.g. u_turn_penality = lua.properties.u_turn_penality * 10, since they have different units(deci-seconds in struct ProfileProperties but seconds in Lua).
• Refer to Sol2ScriptingEnvironment::InitContext() for the loading process from Lua to struct ProfileProperties. Interaction Between C++ and Lua In OSRM has more explaination on this part.
• osrm::extractor::files::writeProfileProperties() is designed for write the struct ProfileProperties into file. It will call the osrm::storage::tar::detail::WriteFrom() at underlying which will write T to file by taking its address and sizeof directly.