Singleton

Engine/source/core/util/tSingleton.h

This is a simple thread safe singleton class based on the design of boost::singleton_default (see http://www.boost.org/).

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Classes:

SingletonCreator

smSingletonCreator 

Singleton()

T *

instance()

Detailed Description

This is a simple thread safe singleton class based on the design of boost::singleton_default (see http://www.boost.org/).

This singleton is guaranteed to be constructed before main() is called and destroyed after main() exits. It will also be created on demand if Singleton::instance() is called before main() begins.

This thread safety only works within the execution context of main(). Access to the singleton from multiple threads outside of main() is is not guaranteed to be thread safe.

To create a singleton you only need to access it once in your code:

Singleton::instance()->myFunction();

You do not need to derive from this class.

note:

Generally stay away from this class (!!) except if your class T has no meaningful constructor. Otherwise, it is very easy to make execution of global ctors ordering dependent.

SingletonCreator smSingletonCreator 

Singleton()

instance()