Optimized the differential scan step by using threads to check files

src/libs/database/impl/Session.cpp

@@ -23,6 +23,7 @@
 
 #include "core/ILogger.hpp"
 #include "core/ITraceLogger.hpp"
+
 #include "database/objects/Artist.hpp"
 #include "database/objects/ArtistInfo.hpp"
 #include "database/objects/Artwork.hpp"
@@ -367,17 +368,17 @@ namespace lms::db
         });
     }
 
-    std::size_t Session::getTotalFilesCount()
+    FileStats Session::getFileStats()
     {
-        std::size_t res{};
+        FileStats stats{};
 
-        res += db::Track::getCount(*this);
-        res += db::Image::getCount(*this);
-        res += db::TrackLyrics::getExternalLyricsCount(*this);
-        res += db::PlayListFile::getCount(*this);
-        res += db::ArtistInfo::getCount(*this);
+        stats.trackCount = db::Track::getCount(*this);
+        stats.artistInfoCount = db::ArtistInfo::getCount(*this);
+        stats.imageCount = db::Image::getCount(*this);
+        stats.trackLyricsCount = db::TrackLyrics::getExternalLyricsCount(*this);
+        stats.playListCount = db::PlayListFile::getCount(*this);
 
-        return res;
+        return stats;
     }
 
     void Session::retrieveEntriesToAnalyze(std::vector<std::string>& entryList)

src/libs/database/include/database/Session.hpp

@@ -27,6 +27,7 @@
 #include <vector>
 
 #include "database/Transaction.hpp"
+#include "database/Types.hpp"
 
 namespace lms::db
 {
@@ -52,8 +53,8 @@ namespace lms::db
         void retrieveEntriesToAnalyze(std::vector<std::string>& entryList);
         void analyzeEntry(const std::string& entry);
 
-        bool areAllTablesEmpty();         // need to acquire a read transaction
-        std::size_t getTotalFilesCount(); // need to acquire a read transaction
+        bool areAllTablesEmpty(); // need to acquire a read transaction
+        FileStats getFileStats(); // need to acquire a read transaction
 
         void prepareTablesIfNeeded(); // need to run only once at startup
         bool migrateSchemaIfNeeded(); // returns true if migration was performed

src/libs/database/include/database/Types.hpp

@@ -102,6 +102,17 @@ namespace lms::db
         }
     };
 
+    struct FileStats
+    {
+        std::size_t trackCount;
+        std::size_t imageCount;
+        std::size_t trackLyricsCount;
+        std::size_t playListCount;
+        std::size_t artistInfoCount;
+
+        std::size_t getTotalFileCount() const { return trackCount + imageCount + trackLyricsCount + playListCount + artistInfoCount; }
+    };
+
     struct YearRange
     {
         int begin{};