LOG: Add the flushLogSink utility method to help with the use of the log system

src/Lib/Log.hh

@@ -10,7 +10,10 @@
 #define VIVY_LOG_ERR(log)               VIVY_LOG_WITH_LEVEL(log, LogLevel::Error)
 #define VIVY_LOG_FATAL(log)             VIVY_LOG_WITH_LEVEL(log, LogLevel::Critical)
 
-#define VIVY_DCL_LOG_SINK(sink) std::shared_ptr<LogSink> sink{ LogSink::newSink() };
+#define VIVY_DCL_LOG_SINK(sink)                          \
+    std::shared_ptr<LogSink> sink{ LogSink::newSink() }; \
+    void flushLogSink() const noexcept { sink->flush(); }
+
 #define VIVY_DCL_LOG_DISPATCH(sink, name, dispatch) \
     std::shared_ptr<dispatch> name{ sink->newDispatcher<dispatch>() };
 

src/VivyApplication.cc

@@ -28,6 +28,8 @@ VivyApplication::setTheme(Theme theme) noexcept
         setStyleSheet(stylesheetStream.readAll());
         logInfo() << "Theme set using " << sheet;
     }
+
+    flushLogSink();
 }
 
 int
@@ -62,6 +64,7 @@ VivyApplication::exec() noexcept
     logInfo() << "Entering the main event loop";
 
     // Main loop
+    flushLogSink();
     return QApplication::exec();
 }