granicus.if.org Git - icinga2/blob - lib/base/singleton.hpp

   1 /* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
   2
   3 #ifndef SINGLETON_H
   4 #define SINGLETON_H
   5
   6 #include "base/i2-base.hpp"
   7 #include <boost/thread/mutex.hpp>
   8
   9 namespace icinga
  10 {
  11
  12 /**
  13  * A singleton.
  14  *
  15  * @ingroup base
  16  */
  17 template<typename T>
  18 class Singleton
  19 {
  20 public:
  21         static T *GetInstance()
  22         {
  23                 static T instance;
  24                 return &instance;
  25         }
  26 };
  27
  28 }
  29
  30 #endif /* SINGLETON_H */