Expose new --mmap switch (mmap_memory: true in NodeJS), and run test suite in this mode, as well as shared memory mode.

src/engine/engine_config.cpp

@@ -23,7 +23,9 @@ bool EngineConfig::IsValid() const
                               unlimited_or_more_than(max_results_nearest, 0) &&
                               max_alternatives >= 0;
 
-    return ((use_shared_memory && all_path_are_empty) || storage_config.IsValid()) && limits_valid;
+    return ((use_shared_memory && all_path_are_empty) || (use_mmap && storage_config.IsValid()) ||
+            storage_config.IsValid()) &&
+           limits_valid;
 }
 }
 }

src/tools/routed.cpp

@@ -119,7 +119,10 @@ inline unsigned generateServerProgramOptions(const int argc,
          "Load data from shared memory") //
         ("memory_file",
          value<boost::filesystem::path>(&config.memory_file),
-         "Store data in a memory mapped file rather than in process memory.") //
+         "DEPRECATED: Will behave the same as --mmap.")(
+            "mmap,m",
+            value<bool>(&config.use_mmap)->implicit_value(true)->default_value(false),
+            "Map datafiles directly, do not use any additional memory.") //
         ("dataset-name",
          value<std::string>(&config.dataset_name),
          "Name of the shared memory dataset to connect to.") //