[search] Cache localities from World on startup.

map/framework.cpp

@@ -510,6 +510,7 @@ Framework::Framework(FrameworkParams const & params)
 
   // Need to reload cities boundaries because maps in indexer were updated.
   GetSearchAPI().LoadCitiesBoundaries();
+  GetSearchAPI().CacheWorldLocalities();
 
   // Init storage with needed callback.
   m_storage.Init(

map/search_api.hpp

@@ -95,6 +95,8 @@ public:
 
   void OnViewportChanged(m2::RectD const & viewport);
 
+  void CacheWorldLocalities() { m_engine.CacheWorldLocalities(); }
+
   void LoadCitiesBoundaries() { m_engine.LoadCitiesBoundaries(); }
 
   // Search everywhere.

search/engine.cpp

@@ -112,6 +112,7 @@ Engine::Engine(DataSource & dataSource, CategoriesHolder const & categories,
   for (size_t i = 0; i < params.m_numThreads; ++i)
     m_threads.emplace_back(&Engine::MainLoop, this, ref(m_contexts[i]));
 
+  CacheWorldLocalities();
   LoadCitiesBoundaries();
   LoadCountriesTree();
 }
@@ -149,6 +150,12 @@ void Engine::ClearCaches()
   PostMessage(Message::TYPE_BROADCAST, [](Processor & processor) { processor.ClearCaches(); });
 }
 
+void Engine::CacheWorldLocalities()
+{
+  PostMessage(Message::TYPE_BROADCAST,
+              [](Processor & processor) { processor.CacheWorldLocalities(); });
+}
+
 void Engine::LoadCitiesBoundaries()
 {
   PostMessage(Message::TYPE_BROADCAST,

search/engine.hpp

@@ -102,6 +102,9 @@ public:
   // Posts request to clear caches to the queue.
   void ClearCaches();
 
+  // Posts requests to load and cache localities from World.mwm.
+  void CacheWorldLocalities();
+
   // Posts request to reload cities boundaries tables.
   void LoadCitiesBoundaries();
 

search/geocoder.cpp

@@ -622,6 +622,19 @@ void Geocoder::FillLocalityCandidates(BaseContext const & ctx, CBV const & filte
   scorer.GetTopLocalities(m_context->GetId(), ctx, filter, maxNumLocalities, preLocalities);
 }
 
+void Geocoder::CacheWorldLocalities()
+{
+  vector<shared_ptr<MwmInfo>> infos;
+  m_dataSource.GetMwmsInfo(infos);
+
+  MwmSet::MwmHandle handle = FindWorld(m_dataSource, infos);
+  if (handle.IsAlive())
+  {
+    auto context = make_unique<MwmContext>(move(handle));
+    UNUSED_VALUE(m_localitiesCache.Get(*context));
+  }
+}
+
 void Geocoder::FillLocalitiesTable(BaseContext const & ctx)
 {
   vector<Locality> preLocalities;

search/geocoder.hpp

@@ -121,6 +121,7 @@ public:
   // noticeable time.
   void Finish(bool cancelled);
 
+  void CacheWorldLocalities();
   void ClearCaches();
 
 private:

search/processor.cpp

@@ -312,6 +312,8 @@ m2::RectD const & Processor::GetViewport() const
   return m_viewport;
 }
 
+void Processor::CacheWorldLocalities() { m_geocoder.CacheWorldLocalities(); }
+
 void Processor::LoadCitiesBoundaries()
 {
   if (m_citiesBoundaries.Load())

search/processor.hpp

@@ -91,6 +91,7 @@ public:
   void InitEmitter(SearchParams const & searchParams);
 
   void ClearCaches();
+  void CacheWorldLocalities();
   void LoadCitiesBoundaries();
   void LoadCountriesTree();