Re: [pclasses-devel] plugin registry thoughts

[stephan b. <st...@s1...>]

On Saturday 22 January 2005 13:00, Christian Prochnow wrote:
> For this to work we have to add reference-counting to the Factories,
> which implies that we also need to track object destruction, and this
> is where it gets tricky.

No we don't - a factory has NO relationship to the object which created 
it (normally, anyway). It is theoretically possible for a factory to 
track the objects it creates, but doing so is inflexible and 
non-generic. If we destroy a factory that has NO effect on the objects 
it creates.

> I don't like the idea of having an implicit GC thread.

Another way to do it is run the cleanup every X times that 
Factory::create() is called.

> But wee also need some "plugin filesystem registry" which tells the P
> plugin loader which shared objects must be loaded for a particular
> class type that should be constructed.

Yeah, that's a whole different matter.

> We actually have two different problems:
> 1. Plugin registry (only load plugin-lib's that are really needed)
> 2. Factory reference counting (cleanup of unused factories)

i'll give it some thought. i don't see a way to do (1) without providing 
some sort of file to map classes to DLLs.

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