empty list of shmem regions if none found

Author: karenzshea

include/storage/shared_monitor.hpp

@@ -117,10 +117,12 @@ template <typename Data> struct SharedMonitor
 #endif
 
     static void remove() { bi::shared_memory_object::remove(Data::name); }
-    static bool exists() {
+    static bool exists()
+    {
         try
         {
-            bi::shared_memory_object shmem_open = bi::shared_memory_object(bi::open_only, Data::name, bi::read_only);
+            bi::shared_memory_object shmem_open =
+                bi::shared_memory_object(bi::open_only, Data::name, bi::read_only);
         }
         catch (const bi::interprocess_exception &exception)
         {

src/tools/store.cpp

@@ -27,9 +27,9 @@ void deleteRegion(const storage::SharedRegionRegister::ShmKey key)
 
 void listRegions()
 {
+    osrm::util::Log() << "name\tshm key\ttimestamp\tsize";
     if (!storage::SharedMonitor<storage::SharedRegionRegister>::exists())
     {
-        osrm::util::Log() << "No shared memory regions found. Try running osrm-datastore";
         return;
     }
     storage::SharedMonitor<storage::SharedRegionRegister> monitor;