Update documentation and changelog

CHANGELOG.md

@@ -1,6 +1,11 @@
 # UNRELEASED
   - Changes from 5.16.0:
     - Bugfixes: fix deduplication of route steps when waypoints are used [#4909](https://github.com/Project-OSRM/osrm-backend/issues/4909)
+    - Tools:
+      - `osrm-routed` accepts a new property `--memory_file` to store memory in a file on disk.
+    - NodeJS:
+      - `OSRM` object accepts a new option `memory_file` that stores the memory in a file on disk.
+
 
 # 5.16.0
   - Changes from 5.15.2:
@@ -17,7 +22,6 @@
       - ADDED #4775: Exposes more information to the turn function, now being able to set turn weights with highway and access information of the turn as well as other roads at the intersection [#4775](https://github.com/Project-OSRM/osrm-backend/issues/4775)
       - FIXED #4763: Add support for non-numerical units in car profile for maxheight [#4763](https://github.com/Project-OSRM/osrm-backend/issues/4763)
       - ADDED #4872: Handling of `barrier=height_restrictor` nodes [#4872](https://github.com/Project-OSRM/osrm-backend/pull/4872)
-
 # 5.15.2
   - Changes from 5.15.1:
     - Features:

docs/nodejs/api.md

@@ -25,6 +25,7 @@ var osrm = new OSRM('network.osrm');
                Make sure you prepared the dataset with the correct toolchain.
     -   `options.shared_memory` **[Boolean](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean)?** Connects to the persistent shared memory datastore.
                This requires you to run `osrm-datastore` prior to creating an `OSRM` object.
+    -   `options.memory_file` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)?** Path to a file on disk to store the memory using mmap.
     -   `options.path` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)?** The path to the `.osrm` files. This is mutually exclusive with setting {options.shared_memory} to true.
     -   `options.max_locations_trip` **[Number](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number)?** Max. locations supported in trip query (default: unlimited).
     -   `options.max_locations_viaroute` **[Number](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number)?** Max. locations supported in viaroute query (default: unlimited).

src/nodejs/node_osrm.cpp

@@ -72,6 +72,7 @@ NAN_MODULE_INIT(Engine::Init)
  * @param {Boolean} [options.shared_memory] Connects to the persistent shared memory datastore.
  *        This requires you to run `osrm-datastore` prior to creating an `OSRM` object.
  * @param {String} [options.path] The path to the `.osrm` files. This is mutually exclusive with setting {options.shared_memory} to true.
+ * @param {String} [options.memory_file] Path to a file to store the memory using mmap.
  * @param {Number} [options.max_locations_trip] Max. locations supported in trip query (default: unlimited).
  * @param {Number} [options.max_locations_viaroute] Max. locations supported in viaroute query (default: unlimited).
  * @param {Number} [options.max_locations_distance_table] Max. locations supported in distance table query (default: unlimited).