Re: [Log4cpp-devel] Modifying log4cpp to support realtime systems

[S R. <kiw...@ma...>]

On Oct 26, 2009, at 13:09 , Konstantin Litvinenko wrote:

> On 26.10.2009 15:43, S Roderick wrote:
> [.........huge skip.........]
> Roderick, I understand all your wishes and can propose followed  
> solution:
>
> 1. We add ability to set up creator for categories in  
> HierarchyMaintainer
> 2. You write you own RTCategory that derived from log4cpp Category  
> and meet all your requirements -
> you hide from usage all functions that receive std::strings and  
> expose those that receive rt_strings.
> 3. To use log4cpp in usual manner user should setup default creator  
> as RTCategory creator and do
> following when obtaining reference on RTCategory:
>
> class foo
> {
>    public:
>      foo() :  
> logger_ 
> (static_cast<RTCategory&>(log4cpp::Category::getInstance("foo")))
>      {
>      }
>
>    private:
>      RTCategory& logger_;
> };
>
> Please, comment this.

This all sounds reasonable, but let me look at it some more.

> As for rt allocator in HierarchyMaintainer that is really hard and  
> likely impossible, because I
> don't know how to rewrite HierarchyMaintainer::_getInstance in a way  
> that it become rt. It uses
> std::string and I see no way how to avoid std::string creation...

Fair enough.

Thanks!
Stephen