v0.2.54..v0.2.55 changeset Log.h

diff --git a/hoot-core/src/main/cpp/hoot/core/util/Log.h b/hoot-core/src/main/cpp/hoot/core/util/Log.h
index 7cacedf..c221115 100644
--- a/hoot-core/src/main/cpp/hoot/core/util/Log.h
+++ b/hoot-core/src/main/cpp/hoot/core/util/Log.h
@@ -22,7 +22,7 @@
  * This will properly maintain the copyright information. DigitalGlobe
  * copyrights will be updated automatically.
  *
- * @copyright Copyright (C) 2015, 2016, 2017, 2018, 2019 DigitalGlobe (http://www.digitalglobe.com/)
+ * @copyright Copyright (C) 2015, 2016, 2017, 2018, 2019, 2020 DigitalGlobe (http://www.digitalglobe.com/)
  */
 
 #ifndef LOG_H
@@ -98,16 +98,7 @@ public:
     Fatal = 5000
   };
 
-  static Log& getInstance()
-  {
-    if (_theInstance == NULL)
-    {
-      _theInstance.reset(new Log());
-      _theInstance->init();
-      _theInstance->setLevel(_theInstance->_level);
-    }
-    return *_theInstance;
-  }
+  static Log& getInstance();
 
   WarningLevel getLevel() const { return _level; }
 
@@ -145,14 +136,19 @@ public:
 
 private:
 
+  bool notFiltered(const std::string& prettyFunction);
+
   WarningLevel _level;
-  static std::shared_ptr<Log> _theInstance;
   static int _warnMessageLimit;
-  bool _classFilterInitialized = false;
+  bool _classFilterInitialized;
   QStringList _classFilter;
 
   Log();
-  bool notFiltered(const std::string& prettyFunction);
+  /** Default destructor */
+  ~Log() = default;
+  /** Delete copy constructor and assignment operator */
+  Log(const Log&) = delete;
+  Log& operator=(const Log&) = delete;
 };
 
 /**