Simple C++ logger by using singleton pattern

Question

Due to the flooding examples of implementing logger using Singleton pattern, I have just written a simple C++ logger in the same approach for my program. However, since the famo

Answer 1

Use Meyers Singleton. If you are using using gcc at least initialization is thread-safe.

class Singleton{
   Singleton(){
    //This is threadsafe in gcc, no mutex required
   }
   static Singleton * instance(){
      static Singleton myinstance;
      return &myinstance;
   }
};

gcc guards static locals construction unless you disable with -fno-threadsafe-statics, I recently wrote about that here