Re: [boost] singlton library?

From: Pavol Droba (droba_at_[hidden])
Date: 2002-11-20 08:36:17

On Wed, Nov 20, 2002 at 01:42:47PM +0200, Yakov Bachmutsky wrote:
> Hi,
> 
> I've posted a proposal of a singleton library (among others) maybe a month
> ago and as far as I remember it was ignored so I post it again with its name
> as the subject, hoping this will help, and some explanations:
> 
> 1. I use singleton<class T> to have a singleton instance of a class in my
> apps.
> The obvious advantage in developement of large apps is that u don't have to
> remember the name of the 1 instance u create like g_myObj but only the
> class's name and thus always use it like this:
>   singleton<myclass> p->method();
> 
> 2. In addition I use a singleton manager to have all singleton objects
> started at app start:
>   singleton_manager::startup()
> 
> 3. to use that I "register" classes to use the singleton class and manager
> class using a macro:
>   REGISTER_SINGLETON(myclass)
> 
> 4. classes can inherit the singleton class to get more specific behaviour
> like two stage construction.
> Every such inhariting class must have its own registration macro.
> 
> 5. In addition to all the above I suggest few more little thingies to
> support other singleton patterns, mostly in the form of macroes. There's
> also an article on this topic:
> http://www.beginthread.com/Article/yakov/Singleton Techniques/

I have done singleton stuff in a way many times. Could you please post some
code examples. I'd like to have a look.

Regards,

Pavol