Re: [Cppcms-users] Plugins and templates

[Julian P. <ju...@wh...>]

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Am 20.08.2010 08:46, schrieb Artyom:
>>
>> Would it be possible to  register a view at runtime? 
>>
> 
> Not sure. It would required making views loading
> and unloading be thread safe 

At least for my case thread safety for loading and unloading views
wouldn't be a problem, because my plugins are loaded sequentially for my
Plugin registration class not being thread safe either.
And wouldn't a simple thread lock suffice to allow only one call to the
views_pool loading system at a time? I think boost features already some
implementations in its thread part, you could integrate that to booster
as well if it isn't integrated yet.

> and make the interaction
> with actual DLL quite complicated.

What about a solution that would employ another factory here, a factory
for the view classes. So I could simply create a factory instance for
each view I want to register from my DSO.
Then my plugin would issue a request of this form in its constructor:

cppcms::views_pool::static_instance().extend_view("skin","view
name",booster::shared_ptr<viewfactory>)

Where the viewfactory pointed to by the shared_ptr would generate
instances of
cppcms::view_pool::view_builder<skin::view_class,content::master>

So interaction should be simplified.

> However, I do not really like the views_pool implementation so it
> is likely to be updated and may be this feature including unloading views
> may be implemented
> 
> 
> You may open feature request in bug tracking system
> 

I'll do that later this day.

Julian
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